source/blender/editors/space_view3d/view3d_edit.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2008 Blender Foundation.
  19  * All rights reserved.
  20  *
  21  *
  22  * Contributor(s): Blender Foundation
  23  *
  24  * ***** END GPL LICENSE BLOCK *****
  25  */
  26
  27 /** \file blender/editors/space_view3d/view3d_edit.c
  28  *  \ingroup spview3d
  29  */
  30
  31
  32 #include <string.h>
  33 #include <stdio.h>
  34 #include <math.h>
  35 #include <float.h>
  36
  37 #include "DNA_armature_types.h"
  38 #include "DNA_object_types.h"
  39 #include "DNA_scene_types.h"
  40 #include "DNA_camera_types.h"
  41 #include "DNA_lamp_types.h"
  42
  43 #include "MEM_guardedalloc.h"
  44
  45 #include "BLI_blenlib.h"
  46 #include "BLI_math.h"
  47 #include "BLI_rand.h"
  48 #include "BLI_utildefines.h"
  49
  50 #include "BKE_camera.h"
  51 #include "BKE_context.h"
  52 #include "BKE_image.h"
  53 #include "BKE_library.h"
  54 #include "BKE_object.h"
  55 #include "BKE_paint.h"
  56 #include "BKE_report.h"
  57 #include "BKE_scene.h"
  58 #include "BKE_screen.h"
  59 #include "BKE_action.h"
  60 #include "BKE_armature.h"
  61 #include "BKE_depsgraph.h" /* for ED_view3d_camera_lock_sync */
  62
  63
  64 #include "BIF_gl.h"
  65 #include "BIF_glutil.h"
  66
  67 #include "WM_api.h"
  68 #include "WM_types.h"
  69
  70 #include "RNA_access.h"
  71 #include "RNA_define.h"
  72
  73 #include "ED_armature.h"
  74 #include "ED_particle.h"
  75 #include "ED_screen.h"
  76 #include "ED_transform.h"
  77 #include "ED_mesh.h"
  78 #include "ED_view3d.h"
  79 #include "ED_sculpt.h"
  80
  81
  82 #include "PIL_time.h" /* smoothview */
  83
  84 #include "view3d_intern.h"  /* own include */
  85
  86 /* ********************** view3d_edit: view manipulations ********************* */
  87
  88 int ED_view3d_camera_lock_check(View3D *v3d, RegionView3D *rv3d)
  89 {
  90         return ((v3d->camera) &&
  91                 (v3d->camera->id.lib == NULL) &&
  92                 (v3d->flag2 & V3D_LOCK_CAMERA) &&
  93                 (rv3d->persp == RV3D_CAMOB));
  94 }
  95
  96 void ED_view3d_camera_lock_init(View3D *v3d, RegionView3D *rv3d)
  97 {
  98         if (ED_view3d_camera_lock_check(v3d, rv3d)) {
  99                 /* using a fallback dist is OK here since ED_view3d_from_object() compensates for it */
 100                 rv3d->dist = ED_view3d_offset_distance(v3d->camera->obmat, rv3d->ofs, VIEW3D_DIST_FALLBACK);
 101                 ED_view3d_from_object(v3d->camera, rv3d->ofs, rv3d->viewquat, &rv3d->dist, NULL);
 102         }
 103 }
 104
 105 /* return TRUE if the camera is moved */
 106 int ED_view3d_camera_lock_sync(View3D *v3d, RegionView3D *rv3d)
 107 {
 108         if (ED_view3d_camera_lock_check(v3d, rv3d)) {
 109                 ObjectTfmProtectedChannels obtfm;
 110                 Object *root_parent;
 111
 112                 if ((U.uiflag & USER_CAM_LOCK_NO_PARENT) == 0 && (root_parent = v3d->camera->parent)) {
 113                         Object *ob_update;
 114                         float view_mat[4][4];
 115                         float diff_mat[4][4];
 116                         float parent_mat[4][4];
 117
 118                         while (root_parent->parent) {
 119                                 root_parent = root_parent->parent;
 120                         }
 121
 122                         ED_view3d_to_m4(view_mat, rv3d->ofs, rv3d->viewquat, rv3d->dist);
 123
 124                         invert_m4_m4(v3d->camera->imat, v3d->camera->obmat);
 125                         mult_m4_m4m4(diff_mat, view_mat, v3d->camera->imat);
 126
 127                         mult_m4_m4m4(parent_mat, diff_mat, root_parent->obmat);
 128
 129                         BKE_object_tfm_protected_backup(root_parent, &obtfm);
 130                         BKE_object_apply_mat4(root_parent, parent_mat, TRUE, FALSE);
 131                         BKE_object_tfm_protected_restore(root_parent, &obtfm, root_parent->protectflag);
 132
 133                         ob_update = v3d->camera;
 134                         while (ob_update) {
 135                                 DAG_id_tag_update(&ob_update->id, OB_RECALC_OB);
 136                                 WM_main_add_notifier(NC_OBJECT | ND_TRANSFORM, ob_update);
 137                                 ob_update = ob_update->parent;
 138                         }
 139                 }
 140                 else {
 141                         BKE_object_tfm_protected_backup(v3d->camera, &obtfm);
 142                         ED_view3d_to_object(v3d->camera, rv3d->ofs, rv3d->viewquat, rv3d->dist);
 143                         BKE_object_tfm_protected_restore(v3d->camera, &obtfm, v3d->camera->protectflag);
 144
 145                         DAG_id_tag_update(&v3d->camera->id, OB_RECALC_OB);
 146                         WM_main_add_notifier(NC_OBJECT | ND_TRANSFORM, v3d->camera);
 147                 }
 148
 149                 return TRUE;
 150         }
 151         else {
 152                 return FALSE;
 153         }
 154 }
 155
 156
 157 /* ********************* box view support ***************** */
 158
 159 static void view3d_boxview_clip(ScrArea *sa)
 160 {
 161         ARegion *ar;
 162         BoundBox *bb = MEM_callocN(sizeof(BoundBox), "clipbb");
 163         float clip[6][4];
 164         float x1 = 0.0f, y1 = 0.0f, z1 = 0.0f, ofs[3] = {0.0f, 0.0f, 0.0f};
 165         int val;
 166
 167         /* create bounding box */
 168         for (ar = sa->regionbase.first; ar; ar = ar->next) {
 169                 if (ar->regiontype == RGN_TYPE_WINDOW) {
 170                         RegionView3D *rv3d = ar->regiondata;
 171
 172                         if (rv3d->viewlock & RV3D_BOXCLIP) {
 173                                 if (ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM)) {
 174                                         if (ar->winx > ar->winy) x1 = rv3d->dist;
 175                                         else x1 = ar->winx * rv3d->dist / ar->winy;
 176
 177                                         if (ar->winx > ar->winy) y1 = ar->winy * rv3d->dist / ar->winx;
 178                                         else y1 = rv3d->dist;
 179                                         copy_v2_v2(ofs, rv3d->ofs);
 180                                 }
 181                                 else if (ELEM(rv3d->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK)) {
 182                                         ofs[2] = rv3d->ofs[2];
 183
 184                                         if (ar->winx > ar->winy) z1 = ar->winy * rv3d->dist / ar->winx;
 185                                         else z1 = rv3d->dist;
 186                                 }
 187                         }
 188                 }
 189         }
 190
 191         for (val = 0; val < 8; val++) {
 192                 if (ELEM4(val, 0, 3, 4, 7))
 193                         bb->vec[val][0] = -x1 - ofs[0];
 194                 else
 195                         bb->vec[val][0] =  x1 - ofs[0];
 196
 197                 if (ELEM4(val, 0, 1, 4, 5))
 198                         bb->vec[val][1] = -y1 - ofs[1];
 199                 else
 200                         bb->vec[val][1] =  y1 - ofs[1];
 201
 202                 if (val > 3)
 203                         bb->vec[val][2] = -z1 - ofs[2];
 204                 else
 205                         bb->vec[val][2] =  z1 - ofs[2];
 206         }
 207
 208         /* normals for plane equations */
 209         normal_tri_v3(clip[0], bb->vec[0], bb->vec[1], bb->vec[4]);
 210         normal_tri_v3(clip[1], bb->vec[1], bb->vec[2], bb->vec[5]);
 211         normal_tri_v3(clip[2], bb->vec[2], bb->vec[3], bb->vec[6]);
 212         normal_tri_v3(clip[3], bb->vec[3], bb->vec[0], bb->vec[7]);
 213         normal_tri_v3(clip[4], bb->vec[4], bb->vec[5], bb->vec[6]);
 214         normal_tri_v3(clip[5], bb->vec[0], bb->vec[2], bb->vec[1]);
 215
 216         /* then plane equations */
 217         for (val = 0; val < 6; val++) {
 218                 clip[val][3] = -dot_v3v3(clip[val], bb->vec[val % 5]);
 219         }
 220
 221         /* create bounding box */
 222         for (ar = sa->regionbase.first; ar; ar = ar->next) {
 223                 if (ar->regiontype == RGN_TYPE_WINDOW) {
 224                         RegionView3D *rv3d = ar->regiondata;
 225
 226                         if (rv3d->viewlock & RV3D_BOXCLIP) {
 227                                 rv3d->rflag |= RV3D_CLIPPING;
 228                                 memcpy(rv3d->clip, clip, sizeof(clip));
 229                                 if (rv3d->clipbb) MEM_freeN(rv3d->clipbb);
 230                                 rv3d->clipbb = MEM_dupallocN(bb);
 231                         }
 232                 }
 233         }
 234         MEM_freeN(bb);
 235 }
 236
 237 /* sync center/zoom view of region to others, for view transforms */
 238 static void view3d_boxview_sync(ScrArea *sa, ARegion *ar)
 239 {
 240         ARegion *artest;
 241         RegionView3D *rv3d = ar->regiondata;
 242         short clip = 0;
 243
 244         for (artest = sa->regionbase.first; artest; artest = artest->next) {
 245                 if (artest != ar && artest->regiontype == RGN_TYPE_WINDOW) {
 246                         RegionView3D *rv3dtest = artest->regiondata;
 247
 248                         if (rv3dtest->viewlock) {
 249                                 rv3dtest->dist = rv3d->dist;
 250
 251                                 if (ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM) ) {
 252                                         if (ELEM(rv3dtest->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK))
 253                                                 rv3dtest->ofs[0] = rv3d->ofs[0];
 254                                         else if (ELEM(rv3dtest->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT))
 255                                                 rv3dtest->ofs[1] = rv3d->ofs[1];
 256                                 }
 257                                 else if (ELEM(rv3d->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK) ) {
 258                                         if (ELEM(rv3dtest->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM))
 259                                                 rv3dtest->ofs[0] = rv3d->ofs[0];
 260                                         else if (ELEM(rv3dtest->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT))
 261                                                 rv3dtest->ofs[2] = rv3d->ofs[2];
 262                                 }
 263                                 else if (ELEM(rv3d->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT) ) {
 264                                         if (ELEM(rv3dtest->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM))
 265                                                 rv3dtest->ofs[1] = rv3d->ofs[1];
 266                                         if (ELEM(rv3dtest->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK))
 267                                                 rv3dtest->ofs[2] = rv3d->ofs[2];
 268                                 }
 269
 270                                 clip |= rv3dtest->viewlock & RV3D_BOXCLIP;
 271
 272                                 ED_region_tag_redraw(artest);
 273                         }
 274                 }
 275         }
 276
 277         if (clip) {
 278                 view3d_boxview_clip(sa);
 279         }
 280 }
 281
 282 /* for home, center etc */
 283 void view3d_boxview_copy(ScrArea *sa, ARegion *ar)
 284 {
 285         ARegion *artest;
 286         RegionView3D *rv3d = ar->regiondata;
 287         short clip = 0;
 288
 289         for (artest = sa->regionbase.first; artest; artest = artest->next) {
 290                 if (artest != ar && artest->regiontype == RGN_TYPE_WINDOW) {
 291                         RegionView3D *rv3dtest = artest->regiondata;
 292
 293                         if (rv3dtest->viewlock) {
 294                                 rv3dtest->dist = rv3d->dist;
 295                                 copy_v3_v3(rv3dtest->ofs, rv3d->ofs);
 296                                 ED_region_tag_redraw(artest);
 297
 298                                 clip |= rv3dtest->viewlock & RV3D_BOXCLIP;
 299                         }
 300                 }
 301         }
 302
 303         if (clip) {
 304                 view3d_boxview_clip(sa);
 305         }
 306 }
 307
 308 /* 'clip' is used to know if our clip setting has changed */
 309 void ED_view3d_quadview_update(ScrArea *sa, ARegion *ar, short do_clip)
 310 {
 311         ARegion *ar_sync = NULL;
 312         RegionView3D *rv3d = ar->regiondata;
 313         short viewlock;
 314         /* this function copies flags from the first of the 3 other quadview
 315          * regions to the 2 other, so it assumes this is the region whose
 316          * properties are always being edited, weak */
 317         viewlock = rv3d->viewlock;
 318
 319         if ((viewlock & RV3D_LOCKED) == 0)
 320                 viewlock = 0;
 321         else if ((viewlock & RV3D_BOXVIEW) == 0) {
 322                 viewlock &= ~RV3D_BOXCLIP;
 323                 do_clip = TRUE;
 324         }
 325
 326         for (; ar; ar = ar->prev) {
 327                 if (ar->alignment == RGN_ALIGN_QSPLIT) {
 328                         rv3d = ar->regiondata;
 329                         rv3d->viewlock = viewlock;
 330
 331                         if (do_clip && (viewlock & RV3D_BOXCLIP) == 0) {
 332                                 rv3d->rflag &= ~RV3D_BOXCLIP;
 333                         }
 334
 335                         /* use ar_sync so we sync with one of the aligned views below
 336                          * else the view jumps on changing view settings like 'clip'
 337                          * since it copies from the perspective view */
 338                         ar_sync = ar;
 339                 }
 340         }
 341
 342         if (rv3d->viewlock & RV3D_BOXVIEW) {
 343                 view3d_boxview_copy(sa, ar_sync ? ar_sync : sa->regionbase.last);
 344         }
 345
 346         ED_area_tag_redraw(sa);
 347 }
 348
 349 /* ************************** init for view ops **********************************/
 350
 351 typedef struct ViewOpsData {
 352         ScrArea *sa;
 353         ARegion *ar;
 354         View3D *v3d;
 355         RegionView3D *rv3d;
 356
 357         /* needed for continuous zoom */
 358         wmTimer *timer;
 359         double timer_lastdraw;
 360
 361         float oldquat[4];
 362         float viewquat[4]; /* working copy of rv3d->viewquat */
 363         float trackvec[3];
 364         float mousevec[3]; /* dolly only */
 365         float reverse, dist0, camzoom0;
 366         float grid, far;
 367         short axis_snap; /* view rotate only */
 368
 369         /* use for orbit selection and auto-dist */
 370         float ofs[3], dyn_ofs[3];
 371         short use_dyn_ofs;
 372
 373         int origx, origy, oldx, oldy;
 374         int origkey; /* the key that triggered the operator */
 375
 376 } ViewOpsData;
 377
 378 #define TRACKBALLSIZE  (1.1)
 379
 380 static void calctrackballvec(const rcti *rect, int mx, int my, float vec[3])
 381 {
 382         float x, y, radius, d, z, t;
 383
 384         radius = TRACKBALLSIZE;
 385
 386         /* normalize x and y */
 387         x = BLI_rcti_cent_x(rect) - mx;
 388         x /= (float)(BLI_rcti_size_x(rect) / 4);
 389         y = BLI_rcti_cent_y(rect) - my;
 390         y /= (float)(BLI_rcti_size_y(rect) / 2);
 391
 392         d = sqrt(x * x + y * y);
 393         if (d < radius * (float)M_SQRT1_2) { /* Inside sphere */
 394                 z = sqrt(radius * radius - d * d);
 395         }
 396         else { /* On hyperbola */
 397                 t = radius / (float)M_SQRT2;
 398                 z = t * t / d;
 399         }
 400
 401         vec[0] = x;
 402         vec[1] = y;
 403         vec[2] = -z;     /* yah yah! */
 404 }
 405
 406
 407 static void viewops_data_create(bContext *C, wmOperator *op, wmEvent *event)
 408 {
 409         static float lastofs[3] = {0, 0, 0};
 410         RegionView3D *rv3d;
 411         ViewOpsData *vod = MEM_callocN(sizeof(ViewOpsData), "viewops data");
 412
 413         /* store data */
 414         op->customdata = vod;
 415         vod->sa = CTX_wm_area(C);
 416         vod->ar = CTX_wm_region(C);
 417         vod->v3d = vod->sa->spacedata.first;
 418         vod->rv3d = rv3d = vod->ar->regiondata;
 419
 420         /* set the view from the camera, if view locking is enabled.
 421          * we may want to make this optional but for now its needed always */
 422         ED_view3d_camera_lock_init(vod->v3d, vod->rv3d);
 423
 424         vod->dist0 = rv3d->dist;
 425         vod->camzoom0 = rv3d->camzoom;
 426         copy_qt_qt(vod->viewquat, rv3d->viewquat);
 427         copy_qt_qt(vod->oldquat, rv3d->viewquat);
 428         vod->origx = vod->oldx = event->x;
 429         vod->origy = vod->oldy = event->y;
 430         vod->origkey = event->type; /* the key that triggered the operator.  */
 431         vod->use_dyn_ofs = (U.uiflag & USER_ORBIT_SELECTION) ? 1 : 0;
 432         copy_v3_v3(vod->ofs, rv3d->ofs);
 433
 434         if (vod->use_dyn_ofs) {
 435                 Scene *scene = CTX_data_scene(C);
 436                 Object *ob = OBACT;
 437
 438                 if (ob && ob->mode & OB_MODE_ALL_PAINT) {
 439                         /* transformation is disabled for painting modes, which will make it
 440                          * so previous offset is used. This is annoying when you open file
 441                          * saved with active object in painting mode
 442                          */
 443                         copy_v3_v3(lastofs, ob->obmat[3]);
 444                 }
 445                 else {
 446                         /* If there's no selection, lastofs is unmodified and last value since static */
 447                         calculateTransformCenter(C, V3D_CENTROID, lastofs, NULL);
 448                 }
 449
 450                 negate_v3_v3(vod->dyn_ofs, lastofs);
 451         }
 452         else if (U.uiflag & USER_ZBUF_ORBIT) {
 453
 454                 view3d_operator_needs_opengl(C); /* needed for zbuf drawing */
 455
 456                 if ((vod->use_dyn_ofs = ED_view3d_autodist(CTX_data_scene(C), vod->ar, vod->v3d, event->mval, vod->dyn_ofs))) {
 457                         if (rv3d->is_persp) {
 458                                 float my_origin[3]; /* original G.vd->ofs */
 459                                 float my_pivot[3]; /* view */
 460                                 float dvec[3];
 461
 462                                 /* locals for dist correction */
 463                                 float mat[3][3];
 464                                 float upvec[3];
 465
 466                                 negate_v3_v3(my_origin, rv3d->ofs);             /* ofs is flipped */
 467
 468                                 /* Set the dist value to be the distance from this 3d point
 469                                  * this means youll always be able to zoom into it and panning wont go bad when dist was zero */
 470
 471                                 /* remove dist value */
 472                                 upvec[0] = upvec[1] = 0;
 473                                 upvec[2] = rv3d->dist;
 474                                 copy_m3_m4(mat, rv3d->viewinv);
 475
 476                                 mul_m3_v3(mat, upvec);
 477                                 sub_v3_v3v3(my_pivot, rv3d->ofs, upvec);
 478                                 negate_v3(my_pivot);                /* ofs is flipped */
 479
 480                                 /* find a new ofs value that is along the view axis (rather than the mouse location) */
 481                                 closest_to_line_v3(dvec, vod->dyn_ofs, my_pivot, my_origin);
 482                                 vod->dist0 = rv3d->dist = len_v3v3(my_pivot, dvec);
 483
 484                                 negate_v3_v3(rv3d->ofs, dvec);
 485                         }
 486                         negate_v3(vod->dyn_ofs);
 487                         copy_v3_v3(vod->ofs, rv3d->ofs);
 488                 }
 489         }
 490
 491         {
 492                 /* for dolly */
 493                 const float mval_f[2] = {(float)event->mval[0],
 494                                          (float)event->mval[1]};
 495                 ED_view3d_win_to_vector(vod->ar, mval_f, vod->mousevec);
 496         }
 497
 498         /* lookup, we don't pass on v3d to prevent confusement */
 499         vod->grid = vod->v3d->grid;
 500         vod->far = vod->v3d->far;
 501
 502         calctrackballvec(&vod->ar->winrct, event->x, event->y, vod->trackvec);
 503
 504         initgrabz(rv3d, -rv3d->ofs[0], -rv3d->ofs[1], -rv3d->ofs[2]);
 505
 506         vod->reverse = 1.0f;
 507         if (rv3d->persmat[2][1] < 0.0f)
 508                 vod->reverse = -1.0f;
 509
 510         rv3d->rflag |= RV3D_NAVIGATING;
 511 }
 512
 513 static void viewops_data_free(bContext *C, wmOperator *op)
 514 {
 515         ARegion *ar;
 516         Paint *p = paint_get_active_from_context(C);
 517
 518         if (op->customdata) {
 519                 ViewOpsData *vod = op->customdata;
 520                 ar = vod->ar;
 521                 vod->rv3d->rflag &= ~RV3D_NAVIGATING;
 522
 523                 if (vod->timer)
 524                         WM_event_remove_timer(CTX_wm_manager(C), vod->timer->win, vod->timer);
 525
 526                 MEM_freeN(vod);
 527                 op->customdata = NULL;
 528         }
 529         else {
 530                 ar = CTX_wm_region(C);
 531         }
 532
 533         if (p && (p->flags & PAINT_FAST_NAVIGATE))
 534                 ED_region_tag_redraw(ar);
 535 }
 536
 537 /* ************************** viewrotate **********************************/
 538
 539 #define COS45 0.7071068
 540 #define SIN45 COS45
 541
 542 #define NUM_SNAP_QUATS 39
 543
 544 static const float snapquats[NUM_SNAP_QUATS][5] = {
 545         /*{q0, q1, q3, q4, view}*/
 546         {COS45, -SIN45, 0.0,    0.0,   RV3D_VIEW_FRONT},
 547         {0.0,    0.0,  -SIN45, -SIN45, RV3D_VIEW_BACK},
 548         {1.0,    0.0,   0.0,    0.0,   RV3D_VIEW_TOP},
 549         {0.0,   -1.0,   0.0,    0.0,   RV3D_VIEW_BOTTOM},
 550         {0.5,   -0.5,  -0.5,   -0.5,   RV3D_VIEW_RIGHT},
 551         {0.5,   -0.5,   0.5,    0.5,   RV3D_VIEW_LEFT},
 552
 553         /* some more 45 deg snaps */
 554         { 0.6532815, -0.6532815, 0.2705981, 0.2705981, 0},
 555         { 0.9238795,  0.0,       0.0,       0.3826834, 0},
 556         { 0.0,       -0.9238795, 0.3826834, 0.0,       0},
 557         { 0.3535534, -0.8535534, 0.3535534, 0.1464466, 0},
 558         { 0.8535534, -0.3535534, 0.1464466, 0.3535534, 0},
 559         { 0.4999999, -0.4999999, 0.5,       0.5,       0},
 560         { 0.2705980, -0.6532815, 0.6532815, 0.2705980, 0},
 561         { 0.6532815, -0.2705980, 0.2705980, 0.6532815, 0},
 562         { 0.2705978, -0.2705980, 0.6532814, 0.6532814, 0},
 563         { 0.3826834,  0.0,       0.0,       0.9238794, 0},
 564         { 0.0,       -0.3826834, 0.9238794, 0.0,       0},
 565         { 0.1464466, -0.3535534, 0.8535534, 0.3535534, 0},
 566         { 0.3535534, -0.1464466, 0.3535534, 0.8535534, 0},
 567         { 0.0,        0.0,       0.9238794, 0.3826834, 0},
 568         {-0.0,        0.0,       0.3826834, 0.9238794, 0},
 569         {-0.2705980,  0.2705980, 0.6532813, 0.6532813, 0},
 570         {-0.3826834,  0.0,       0.0,       0.9238794, 0},
 571         { 0.0,        0.3826834, 0.9238794, 0.0,       0},
 572         {-0.1464466,  0.3535534, 0.8535533, 0.3535533, 0},
 573         {-0.3535534,  0.1464466, 0.3535533, 0.8535533, 0},
 574         {-0.4999999,  0.4999999, 0.4999999, 0.4999999, 0},
 575         {-0.2705980,  0.6532815, 0.6532814, 0.2705980, 0},
 576         {-0.6532815,  0.2705980, 0.2705980, 0.6532814, 0},
 577         {-0.6532813,  0.6532813, 0.2705979, 0.2705979, 0},
 578         {-0.9238793,  0.0,       0.0,       0.3826833, 0},
 579         { 0.0,        0.9238793, 0.3826833, 0.0,       0},
 580         {-0.3535533,  0.8535533, 0.3535533, 0.1464466, 0},
 581         {-0.8535533,  0.3535533, 0.1464466, 0.3535533, 0},
 582         {-0.3826833,  0.9238794, 0.0,       0.0,       0},
 583         {-0.9238794,  0.3826833, 0.0,       0.0,       0},
 584         {-COS45,      0.0,       0.0,       SIN45,     0},
 585         { COS45,      0.0,       0.0,       SIN45,     0},
 586         { 0.0,        0.0,       0.0,       1.0,       0}
 587 };
 588
 589 enum {
 590         VIEW_PASS = 0,
 591         VIEW_APPLY,
 592         VIEW_CONFIRM
 593 };
 594
 595 /* NOTE: these defines are saved in keymap files, do not change values but just add new ones */
 596 #define VIEW_MODAL_CONFIRM              1 /* used for all view operations */
 597 #define VIEWROT_MODAL_AXIS_SNAP_ENABLE  2
 598 #define VIEWROT_MODAL_AXIS_SNAP_DISABLE 3
 599 #define VIEWROT_MODAL_SWITCH_ZOOM       4
 600 #define VIEWROT_MODAL_SWITCH_MOVE       5
 601 #define VIEWROT_MODAL_SWITCH_ROTATE     6
 602
 603 /* called in transform_ops.c, on each regeneration of keymaps  */
 604 void viewrotate_modal_keymap(wmKeyConfig *keyconf)
 605 {
 606         static EnumPropertyItem modal_items[] = {
 607                 {VIEW_MODAL_CONFIRM,    "CONFIRM", 0, "Confirm", ""},
 608
 609                 {VIEWROT_MODAL_AXIS_SNAP_ENABLE,    "AXIS_SNAP_ENABLE", 0, "Enable Axis Snap", ""},
 610                 {VIEWROT_MODAL_AXIS_SNAP_DISABLE,   "AXIS_SNAP_DISABLE", 0, "Disable Axis Snap", ""},
 611
 612                 {VIEWROT_MODAL_SWITCH_ZOOM, "SWITCH_TO_ZOOM", 0, "Switch to Zoom"},
 613                 {VIEWROT_MODAL_SWITCH_MOVE, "SWITCH_TO_MOVE", 0, "Switch to Move"},
 614
 615                 {0, NULL, 0, NULL, NULL}
 616         };
 617
 618         wmKeyMap *keymap = WM_modalkeymap_get(keyconf, "View3D Rotate Modal");
 619
 620         /* this function is called for each spacetype, only needs to add map once */
 621         if (keymap && keymap->modal_items) return;
 622
 623         keymap = WM_modalkeymap_add(keyconf, "View3D Rotate Modal", modal_items);
 624
 625         /* items for modal map */
 626         WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, KM_ANY, 0, VIEW_MODAL_CONFIRM);
 627         WM_modalkeymap_add_item(keymap, ESCKEY, KM_PRESS, KM_ANY, 0, VIEW_MODAL_CONFIRM);
 628
 629         WM_modalkeymap_add_item(keymap, LEFTALTKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_AXIS_SNAP_ENABLE);
 630         WM_modalkeymap_add_item(keymap, LEFTALTKEY, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_AXIS_SNAP_DISABLE);
 631
 632         /* disabled mode switching for now, can re-implement better, later on */
 633 #if 0
 634         WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ZOOM);
 635         WM_modalkeymap_add_item(keymap, LEFTCTRLKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ZOOM);
 636         WM_modalkeymap_add_item(keymap, LEFTSHIFTKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_MOVE);
 637 #endif
 638
 639         /* assign map to operators */
 640         WM_modalkeymap_assign(keymap, "VIEW3D_OT_rotate");
 641
 642 }
 643
 644 static void viewrotate_apply(ViewOpsData *vod, int x, int y)
 645 {
 646         RegionView3D *rv3d = vod->rv3d;
 647
 648         rv3d->view = RV3D_VIEW_USER; /* need to reset everytime because of view snapping */
 649
 650         if (U.flag & USER_TRACKBALL) {
 651                 float phi, si, q1[4], dvec[3], newvec[3];
 652
 653                 calctrackballvec(&vod->ar->winrct, x, y, newvec);
 654
 655                 sub_v3_v3v3(dvec, newvec, vod->trackvec);
 656
 657                 si = len_v3(dvec);
 658                 si /= (float)(2.0 * TRACKBALLSIZE);
 659
 660                 cross_v3_v3v3(q1 + 1, vod->trackvec, newvec);
 661                 normalize_v3(q1 + 1);
 662
 663                 /* Allow for rotation beyond the interval [-pi, pi] */
 664                 while (si > 1.0f)
 665                         si -= 2.0f;
 666
 667                 /* This relation is used instead of
 668                  * - phi = asin(si) so that the angle
 669                  * - of rotation is linearly proportional
 670                  * - to the distance that the mouse is
 671                  * - dragged. */
 672                 phi = si * (float)(M_PI / 2.0);
 673
 674                 q1[0] = cos(phi);
 675                 mul_v3_fl(q1 + 1, sin(phi));
 676                 mul_qt_qtqt(vod->viewquat, q1, vod->oldquat);
 677
 678                 if (vod->use_dyn_ofs) {
 679                         /* compute the post multiplication quat, to rotate the offset correctly */
 680                         conjugate_qt_qt(q1, vod->oldquat);
 681                         mul_qt_qtqt(q1, q1, vod->viewquat);
 682
 683                         conjugate_qt(q1); /* conj == inv for unit quat */
 684                         copy_v3_v3(rv3d->ofs, vod->ofs);
 685                         sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
 686                         mul_qt_v3(q1, rv3d->ofs);
 687                         add_v3_v3(rv3d->ofs, vod->dyn_ofs);
 688                 }
 689         }
 690         else {
 691                 /* New turntable view code by John Aughey */
 692                 float q1[4];
 693                 float m[3][3];
 694                 float m_inv[3][3];
 695                 const float zvec_global[3] = {0.0f, 0.0f, 1.0f};
 696                 float xaxis[3];
 697
 698                 /* Sensitivity will control how fast the viewport rotates.  0.007 was
 699                  * obtained experimentally by looking at viewport rotation sensitivities
 700                  * on other modeling programs. */
 701                 /* Perhaps this should be a configurable user parameter. */
 702                 const float sensitivity = 0.007f;
 703
 704                 /* Get the 3x3 matrix and its inverse from the quaternion */
 705                 quat_to_mat3(m, vod->viewquat);
 706                 invert_m3_m3(m_inv, m);
 707
 708                 /* avoid gimble lock */
 709 #if 1
 710                 if (len_squared_v3v3(zvec_global, m_inv[2]) > 0.001f) {
 711                         float fac;
 712                         cross_v3_v3v3(xaxis, zvec_global, m_inv[2]);
 713                         if (dot_v3v3(xaxis, m_inv[0]) < 0) {
 714                                 negate_v3(xaxis);
 715                         }
 716                         fac = angle_normalized_v3v3(zvec_global, m_inv[2]) / (float)M_PI;
 717                         fac = fabsf(fac - 0.5f) * 2;
 718                         fac = fac * fac;
 719                         interp_v3_v3v3(xaxis, xaxis, m_inv[0], fac);
 720                 }
 721                 else {
 722                         copy_v3_v3(xaxis, m_inv[0]);
 723                 }
 724 #else
 725                 copy_v3_v3(xaxis, m_inv[0]);
 726 #endif
 727
 728                 /* Determine the direction of the x vector (for rotating up and down) */
 729                 /* This can likely be computed directly from the quaternion. */
 730
 731                 /* Perform the up/down rotation */
 732                 axis_angle_to_quat(q1, xaxis, sensitivity * -(y - vod->oldy));
 733                 mul_qt_qtqt(vod->viewquat, vod->viewquat, q1);
 734
 735                 if (vod->use_dyn_ofs) {
 736                         conjugate_qt(q1); /* conj == inv for unit quat */
 737                         sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
 738                         mul_qt_v3(q1, rv3d->ofs);
 739                         add_v3_v3(rv3d->ofs, vod->dyn_ofs);
 740                 }
 741
 742                 /* Perform the orbital rotation */
 743                 axis_angle_to_quat(q1, zvec_global, sensitivity * vod->reverse * (x - vod->oldx));
 744                 mul_qt_qtqt(vod->viewquat, vod->viewquat, q1);
 745
 746                 if (vod->use_dyn_ofs) {
 747                         conjugate_qt(q1);
 748                         sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
 749                         mul_qt_v3(q1, rv3d->ofs);
 750                         add_v3_v3(rv3d->ofs, vod->dyn_ofs);
 751                 }
 752         }
 753
 754         /* check for view snap */
 755         if (vod->axis_snap) {
 756                 int i;
 757                 float viewquat_inv[4];
 758                 float zaxis[3] = {0, 0, 1};
 759                 invert_qt_qt(viewquat_inv, vod->viewquat);
 760
 761                 mul_qt_v3(viewquat_inv, zaxis);
 762
 763                 for (i = 0; i < NUM_SNAP_QUATS; i++) {
 764
 765                         float view = (int)snapquats[i][4];
 766                         float viewquat_inv_test[4];
 767                         float zaxis_test[3] = {0, 0, 1};
 768
 769                         invert_qt_qt(viewquat_inv_test, snapquats[i]);
 770                         mul_qt_v3(viewquat_inv_test, zaxis_test);
 771
 772                         if (angle_v3v3(zaxis_test, zaxis) < DEG2RADF(45 / 3)) {
 773                                 /* find the best roll */
 774                                 float quat_roll[4], quat_final[4], quat_best[4];
 775                                 float viewquat_align[4]; /* viewquat aligned to zaxis_test */
 776                                 float viewquat_align_inv[4]; /* viewquat aligned to zaxis_test */
 777                                 float best_angle = FLT_MAX;
 778                                 int j;
 779
 780                                 /* viewquat_align is the original viewquat aligned to the snapped axis
 781                                  * for testing roll */
 782                                 rotation_between_vecs_to_quat(viewquat_align, zaxis_test, zaxis);
 783                                 normalize_qt(viewquat_align);
 784                                 mul_qt_qtqt(viewquat_align, vod->viewquat, viewquat_align);
 785                                 normalize_qt(viewquat_align);
 786                                 invert_qt_qt(viewquat_align_inv, viewquat_align);
 787
 788                                 /* find best roll */
 789                                 for (j = 0; j < 8; j++) {
 790                                         float angle;
 791                                         float xaxis1[3] = {1, 0, 0};
 792                                         float xaxis2[3] = {1, 0, 0};
 793                                         float quat_final_inv[4];
 794
 795                                         axis_angle_to_quat(quat_roll, zaxis_test, (float)j * DEG2RADF(45.0f));
 796                                         normalize_qt(quat_roll);
 797
 798                                         mul_qt_qtqt(quat_final, snapquats[i], quat_roll);
 799                                         normalize_qt(quat_final);
 800
 801                                         /* compare 2 vector angles to find the least roll */
 802                                         invert_qt_qt(quat_final_inv, quat_final);
 803                                         mul_qt_v3(viewquat_align_inv, xaxis1);
 804                                         mul_qt_v3(quat_final_inv, xaxis2);
 805                                         angle = angle_v3v3(xaxis1, xaxis2);
 806
 807                                         if (angle <= best_angle) {
 808                                                 best_angle = angle;
 809                                                 copy_qt_qt(quat_best, quat_final);
 810                                                 if (j) view = 0;  /* view grid assumes certain up axis */
 811                                         }
 812                                 }
 813
 814                                 copy_qt_qt(vod->viewquat, quat_best);
 815                                 rv3d->view = view; /* if we snap to a rolled camera the grid is invalid */
 816
 817                                 break;
 818                         }
 819                 }
 820         }
 821         vod->oldx = x;
 822         vod->oldy = y;
 823
 824         /* avoid precision loss over time */
 825         normalize_qt(vod->viewquat);
 826
 827         /* use a working copy so view rotation locking doesnt overwrite the locked
 828          * rotation back into the view we calculate with */
 829         copy_qt_qt(rv3d->viewquat, vod->viewquat);
 830
 831         ED_view3d_camera_lock_sync(vod->v3d, rv3d);
 832
 833         ED_region_tag_redraw(vod->ar);
 834 }
 835
 836 static int viewrotate_modal(bContext *C, wmOperator *op, wmEvent *event)
 837 {
 838         ViewOpsData *vod = op->customdata;
 839         short event_code = VIEW_PASS;
 840
 841         /* execute the events */
 842         if (event->type == MOUSEMOVE) {
 843                 event_code = VIEW_APPLY;
 844         }
 845         else if (event->type == EVT_MODAL_MAP) {
 846                 switch (event->val) {
 847                         case VIEW_MODAL_CONFIRM:
 848                                 event_code = VIEW_CONFIRM;
 849                                 break;
 850                         case VIEWROT_MODAL_AXIS_SNAP_ENABLE:
 851                                 vod->axis_snap = TRUE;
 852                                 event_code = VIEW_APPLY;
 853                                 break;
 854                         case VIEWROT_MODAL_AXIS_SNAP_DISABLE:
 855                                 vod->axis_snap = FALSE;
 856                                 event_code = VIEW_APPLY;
 857                                 break;
 858                         case VIEWROT_MODAL_SWITCH_ZOOM:
 859                                 WM_operator_name_call(C, "VIEW3D_OT_zoom", WM_OP_INVOKE_DEFAULT, NULL);
 860                                 event_code = VIEW_CONFIRM;
 861                                 break;
 862                         case VIEWROT_MODAL_SWITCH_MOVE:
 863                                 WM_operator_name_call(C, "VIEW3D_OT_move", WM_OP_INVOKE_DEFAULT, NULL);
 864                                 event_code = VIEW_CONFIRM;
 865                                 break;
 866                 }
 867         }
 868         else if (event->type == vod->origkey && event->val == KM_RELEASE) {
 869                 event_code = VIEW_CONFIRM;
 870         }
 871
 872         if (event_code == VIEW_APPLY) {
 873                 viewrotate_apply(vod, event->x, event->y);
 874         }
 875         else if (event_code == VIEW_CONFIRM) {
 876                 ED_view3d_depth_tag_update(vod->rv3d);
 877                 viewops_data_free(C, op);
 878
 879                 return OPERATOR_FINISHED;
 880         }
 881
 882         return OPERATOR_RUNNING_MODAL;
 883 }
 884
 885 static int viewrotate_invoke(bContext *C, wmOperator *op, wmEvent *event)
 886 {
 887         ViewOpsData *vod;
 888         RegionView3D *rv3d;
 889
 890         /* makes op->customdata */
 891         viewops_data_create(C, op, event);
 892         vod = op->customdata;
 893         rv3d = vod->rv3d;
 894
 895         if (rv3d->viewlock) { /* poll should check but in some cases fails, see poll func for details */
 896                 viewops_data_free(C, op);
 897                 return OPERATOR_PASS_THROUGH;
 898         }
 899
 900         /* switch from camera view when: */
 901         if (rv3d->persp != RV3D_PERSP) {
 902
 903                 if (U.uiflag & USER_AUTOPERSP) {
 904                         if (!ED_view3d_camera_lock_check(vod->v3d, vod->rv3d)) {
 905                                 rv3d->persp = RV3D_PERSP;
 906                         }
 907                 }
 908                 else if (rv3d->persp == RV3D_CAMOB) {
 909
 910                         /* changed since 2.4x, use the camera view */
 911                         if (vod->v3d->camera) {
 912                                 rv3d->dist = ED_view3d_offset_distance(vod->v3d->camera->obmat, rv3d->ofs, VIEW3D_DIST_FALLBACK);
 913                                 ED_view3d_from_object(vod->v3d->camera, rv3d->ofs, rv3d->viewquat, &rv3d->dist, NULL);
 914                         }
 915
 916                         if (!ED_view3d_camera_lock_check(vod->v3d, vod->rv3d)) {
 917                                 rv3d->persp = rv3d->lpersp;
 918                         }
 919                 }
 920                 ED_region_tag_redraw(vod->ar);
 921         }
 922
 923         if (event->type == MOUSEPAN) {
 924                 /* Rotate direction we keep always same */
 925                 if (U.uiflag2 & USER_TRACKPAD_NATURAL)
 926                         viewrotate_apply(vod, 2 * event->x - event->prevx, 2 * event->y - event->prevy);
 927                 else
 928                         viewrotate_apply(vod, event->prevx, event->prevy);
 929
 930                 ED_view3d_depth_tag_update(rv3d);
 931
 932                 viewops_data_free(C, op);
 933
 934                 return OPERATOR_FINISHED;
 935         }
 936         else if (event->type == MOUSEROTATE) {
 937                 /* MOUSEROTATE performs orbital rotation, so y axis delta is set to 0 */
 938                 viewrotate_apply(vod, event->prevx, event->y);
 939                 ED_view3d_depth_tag_update(rv3d);
 940
 941                 viewops_data_free(C, op);
 942
 943                 return OPERATOR_FINISHED;
 944         }
 945         else {
 946                 /* add temp handler */
 947                 WM_event_add_modal_handler(C, op);
 948
 949                 return OPERATOR_RUNNING_MODAL;
 950         }
 951 }
 952
 953 /* test for unlocked camera view in quad view */
 954 static int view3d_camera_user_poll(bContext *C)
 955 {
 956         View3D *v3d;
 957         ARegion *ar;
 958
 959         if (ED_view3d_context_user_region(C, &v3d, &ar)) {
 960                 RegionView3D *rv3d = ar->regiondata;
 961                 if (rv3d->persp == RV3D_CAMOB) {
 962                         return 1;
 963                 }
 964         }
 965
 966         return 0;
 967 }
 968
 969 static int viewrotate_cancel(bContext *C, wmOperator *op)
 970 {
 971         viewops_data_free(C, op);
 972
 973         return OPERATOR_CANCELLED;
 974 }
 975
 976 void VIEW3D_OT_rotate(wmOperatorType *ot)
 977 {
 978         /* identifiers */
 979         ot->name = "Rotate View";
 980         ot->description = "Rotate the view";
 981         ot->idname = "VIEW3D_OT_rotate";
 982
 983         /* api callbacks */
 984         ot->invoke = viewrotate_invoke;
 985         ot->modal = viewrotate_modal;
 986         ot->poll = ED_operator_region_view3d_active;
 987         ot->cancel = viewrotate_cancel;
 988
 989         /* flags */
 990         ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_POINTER;
 991 }
 992
 993 /* NDOF utility functions
 994  * (should these functions live in this file?)
 995  */
 996 float ndof_to_axis_angle(struct wmNDOFMotionData *ndof, float axis[3])
 997 {
 998         return ndof->dt * normalize_v3_v3(axis, ndof->rvec);
 999 }
1000
1001 void ndof_to_quat(struct wmNDOFMotionData *ndof, float q[4])
1002 {
1003         float axis[3];
1004         float angle;
1005
1006         angle = ndof_to_axis_angle(ndof, axis);
1007         axis_angle_to_quat(q, axis, angle);
1008 }
1009
1010 /* -- "orbit" navigation (trackball/turntable)
1011  * -- zooming
1012  * -- panning in rotationally-locked views
1013  */
1014 static int ndof_orbit_invoke(bContext *C, wmOperator *op, wmEvent *event)
1015 {
1016
1017         if (event->type != NDOF_MOTION)
1018                 return OPERATOR_CANCELLED;
1019         else {
1020                 View3D *v3d = CTX_wm_view3d(C);
1021                 ViewOpsData *vod;
1022                 RegionView3D *rv3d = CTX_wm_region_view3d(C);
1023                 wmNDOFMotionData *ndof = (wmNDOFMotionData *) event->customdata;
1024
1025                 ED_view3d_camera_lock_init(v3d, rv3d);
1026
1027                 viewops_data_create(C, op, event);
1028                 vod = op->customdata;
1029
1030                 rv3d->rot_angle = 0.f; /* off by default, until changed later this function */
1031
1032                 if (ndof->progress != P_FINISHING) {
1033                         const float dt = ndof->dt;
1034
1035                         /* tune these until everything feels right */
1036                         const float rot_sensitivity = 1.f;
1037 #if 0
1038                         const float zoom_sensitivity = 1.f;
1039 #endif
1040                         const float pan_sensitivity = 1.f;
1041                         const int has_rotation = rv3d->viewlock != RV3D_LOCKED && !is_zero_v3(ndof->rvec);
1042
1043                         float view_inv[4];
1044                         invert_qt_qt(view_inv, rv3d->viewquat);
1045
1046                         /* #define DEBUG_NDOF_MOTION */
1047                         #ifdef DEBUG_NDOF_MOTION
1048                         printf("ndof: T=(%.2f,%.2f,%.2f) R=(%.2f,%.2f,%.2f) dt=%.3f delivered to 3D view\n",
1049                                ndof->tx, ndof->ty, ndof->tz, ndof->rx, ndof->ry, ndof->rz, ndof->dt);
1050                         #endif
1051
1052                         if (rv3d->viewlock == RV3D_LOCKED) {
1053                                 /* rotation not allowed -- explore panning options instead */
1054                                 float pan_vec[3] = {ndof->tx, ndof->ty, 0.0f};
1055                                 mul_v3_fl(pan_vec, pan_sensitivity * rv3d->dist * dt);
1056
1057                                 /* transform motion from view to world coordinates */
1058                                 invert_qt_qt(view_inv, rv3d->viewquat);
1059                                 mul_qt_v3(view_inv, pan_vec);
1060
1061                                 /* move center of view opposite of hand motion (this is camera mode, not object mode) */
1062                                 sub_v3_v3(rv3d->ofs, pan_vec);
1063                         }
1064
1065                         if (has_rotation) {
1066
1067                                 rv3d->view = RV3D_VIEW_USER;
1068
1069                                 if (U.ndof_flag & NDOF_TURNTABLE) {
1070
1071                                         /* turntable view code by John Aughey, adapted for 3D mouse by [mce] */
1072                                         float angle, rot[4];
1073                                         float xvec[3] = {1, 0, 0};
1074
1075                                         /* Determine the direction of the x vector (for rotating up and down) */
1076                                         mul_qt_v3(view_inv, xvec);
1077
1078                                         /* Perform the up/down rotation */
1079                                         angle = rot_sensitivity * dt * ndof->rx;
1080                                         if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1081                                                 angle = -angle;
1082                                         rot[0] = cos(angle);
1083                                         mul_v3_v3fl(rot + 1, xvec, sin(angle));
1084                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1085
1086                                         /* Perform the orbital rotation */
1087                                         angle = rot_sensitivity * dt * ndof->ry;
1088                                         if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1089                                                 angle = -angle;
1090
1091                                         /* update the onscreen doo-dad */
1092                                         rv3d->rot_angle = angle;
1093                                         rv3d->rot_axis[0] = 0;
1094                                         rv3d->rot_axis[1] = 0;
1095                                         rv3d->rot_axis[2] = 1;
1096
1097                                         rot[0] = cos(angle);
1098                                         rot[1] = rot[2] = 0.0;
1099                                         rot[3] = sin(angle);
1100                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1101
1102                                 }
1103                                 else {
1104                                         float rot[4];
1105                                         float axis[3];
1106                                         float angle = rot_sensitivity * ndof_to_axis_angle(ndof, axis);
1107
1108                                         if (U.ndof_flag & NDOF_ROLL_INVERT_AXIS)
1109                                                 axis[2] = -axis[2];
1110
1111                                         if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1112                                                 axis[0] = -axis[0];
1113
1114                                         if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1115                                                 axis[1] = -axis[1];
1116
1117
1118                                         /* transform rotation axis from view to world coordinates */
1119                                         mul_qt_v3(view_inv, axis);
1120
1121                                         /* update the onscreen doo-dad */
1122                                         rv3d->rot_angle = angle;
1123                                         copy_v3_v3(rv3d->rot_axis, axis);
1124
1125                                         axis_angle_to_quat(rot, axis, angle);
1126
1127                                         /* apply rotation */
1128                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1129
1130                                 }
1131
1132                                 /* rotate around custom center */
1133                                 if (vod && vod->use_dyn_ofs) {
1134                                         float q1[4];
1135
1136                                         /* compute the post multiplication quat, to rotate the offset correctly */
1137                                         conjugate_qt_qt(q1, vod->oldquat);
1138                                         mul_qt_qtqt(q1, q1, rv3d->viewquat);
1139
1140                                         conjugate_qt(q1); /* conj == inv for unit quat */
1141                                         copy_v3_v3(rv3d->ofs, vod->ofs);
1142                                         sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
1143                                         mul_qt_v3(q1, rv3d->ofs);
1144                                         add_v3_v3(rv3d->ofs, vod->dyn_ofs);
1145                                 }
1146                         }
1147                 }
1148
1149                 viewops_data_free(C, op);
1150
1151                 ED_view3d_camera_lock_sync(v3d, rv3d);
1152
1153                 ED_region_tag_redraw(CTX_wm_region(C));
1154
1155                 return OPERATOR_FINISHED;
1156         }
1157 }
1158
1159 void VIEW3D_OT_ndof_orbit(struct wmOperatorType *ot)
1160 {
1161         /* identifiers */
1162         ot->name = "NDOF Orbit View";
1163         ot->description = "Explore every angle of an object using the 3D mouse";
1164         ot->idname = "VIEW3D_OT_ndof_orbit";
1165
1166         /* api callbacks */
1167         ot->invoke = ndof_orbit_invoke;
1168         ot->poll = ED_operator_view3d_active;
1169
1170         /* flags */
1171         ot->flag = 0;
1172 }
1173
1174
1175 static int ndof_orbit_zoom_invoke(bContext *C, wmOperator *op, wmEvent *event)
1176 {
1177
1178         if (event->type != NDOF_MOTION)
1179                 return OPERATOR_CANCELLED;
1180         else {
1181                 ViewOpsData *vod;
1182                 View3D *v3d = CTX_wm_view3d(C);
1183                 RegionView3D *rv3d = CTX_wm_region_view3d(C);
1184                 wmNDOFMotionData *ndof = (wmNDOFMotionData *) event->customdata;
1185
1186                 ED_view3d_camera_lock_init(v3d, rv3d);
1187
1188                 rv3d->rot_angle = 0.f; /* off by default, until changed later this function */
1189
1190                 viewops_data_create(C, op, event);
1191                 vod = op->customdata;
1192
1193                 if (ndof->progress != P_FINISHING) {
1194                         const float dt = ndof->dt;
1195
1196                         /* tune these until everything feels right */
1197                         const float rot_sensitivity = 1.f;
1198
1199                         const float zoom_sensitivity = 1.f;
1200
1201                         const float pan_sensitivity = 1.f;
1202                         const int has_rotation = rv3d->viewlock != RV3D_LOCKED && !is_zero_v3(ndof->rvec);
1203
1204                         float view_inv[4];
1205                         invert_qt_qt(view_inv, rv3d->viewquat);
1206
1207                         /* #define DEBUG_NDOF_MOTION */
1208                         #ifdef DEBUG_NDOF_MOTION
1209                         printf("ndof: T=(%.2f,%.2f,%.2f) R=(%.2f,%.2f,%.2f) dt=%.3f delivered to 3D view\n",
1210                                ndof->tx, ndof->ty, ndof->tz, ndof->rx, ndof->ry, ndof->rz, ndof->dt);
1211                         #endif
1212
1213                         if (ndof->tz) {
1214                                 /* Zoom!
1215                                  * velocity should be proportional to the linear velocity attained by rotational motion of same strength
1216                                  * [got that?]
1217                                  * proportional to arclength = radius * angle
1218                                  */
1219                                 float zoom_distance = zoom_sensitivity * rv3d->dist * dt * ndof->tz;
1220
1221                                 if (U.ndof_flag & NDOF_ZOOM_INVERT)
1222                                         zoom_distance = -zoom_distance;
1223
1224                                 rv3d->dist += zoom_distance;
1225                         }
1226
1227                         if (rv3d->viewlock == RV3D_LOCKED) {
1228                                 /* rotation not allowed -- explore panning options instead */
1229                                 float pan_vec[3] = {ndof->tx, ndof->ty, 0.0f};
1230                                 mul_v3_fl(pan_vec, pan_sensitivity * rv3d->dist * dt);
1231
1232                                 /* transform motion from view to world coordinates */
1233                                 invert_qt_qt(view_inv, rv3d->viewquat);
1234                                 mul_qt_v3(view_inv, pan_vec);
1235
1236                                 /* move center of view opposite of hand motion (this is camera mode, not object mode) */
1237                                 sub_v3_v3(rv3d->ofs, pan_vec);
1238                         }
1239
1240                         if (has_rotation) {
1241
1242                                 rv3d->view = RV3D_VIEW_USER;
1243
1244                                 if (U.ndof_flag & NDOF_TURNTABLE) {
1245
1246                                         /* turntable view code by John Aughey, adapted for 3D mouse by [mce] */
1247                                         float angle, rot[4];
1248                                         float xvec[3] = {1, 0, 0};
1249
1250                                         /* Determine the direction of the x vector (for rotating up and down) */
1251                                         mul_qt_v3(view_inv, xvec);
1252
1253                                         /* Perform the up/down rotation */
1254                                         angle = rot_sensitivity * dt * ndof->rx;
1255                                         if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1256                                                 angle = -angle;
1257                                         rot[0] = cos(angle);
1258                                         mul_v3_v3fl(rot + 1, xvec, sin(angle));
1259                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1260
1261                                         /* Perform the orbital rotation */
1262                                         angle = rot_sensitivity * dt * ndof->ry;
1263                                         if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1264                                                 angle = -angle;
1265
1266                                         /* update the onscreen doo-dad */
1267                                         rv3d->rot_angle = angle;
1268                                         rv3d->rot_axis[0] = 0;
1269                                         rv3d->rot_axis[1] = 0;
1270                                         rv3d->rot_axis[2] = 1;
1271
1272                                         rot[0] = cos(angle);
1273                                         rot[1] = rot[2] = 0.0;
1274                                         rot[3] = sin(angle);
1275                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1276
1277                                 }
1278                                 else {
1279                                         float rot[4];
1280                                         float axis[3];
1281                                         float angle = rot_sensitivity * ndof_to_axis_angle(ndof, axis);
1282
1283                                         if (U.ndof_flag & NDOF_ROLL_INVERT_AXIS)
1284                                                 axis[2] = -axis[2];
1285
1286                                         if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1287                                                 axis[0] = -axis[0];
1288
1289                                         if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1290                                                 axis[1] = -axis[1];
1291
1292
1293                                         /* transform rotation axis from view to world coordinates */
1294                                         mul_qt_v3(view_inv, axis);
1295
1296                                         /* update the onscreen doo-dad */
1297                                         rv3d->rot_angle = angle;
1298                                         copy_v3_v3(rv3d->rot_axis, axis);
1299
1300                                         axis_angle_to_quat(rot, axis, angle);
1301
1302                                         /* apply rotation */
1303                                         mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1304
1305                                 }
1306
1307                                 /* rotate around custom center */
1308                                 if (vod && vod->use_dyn_ofs) {
1309                                         float q1[4];
1310
1311                                         /* compute the post multiplication quat, to rotate the offset correctly */
1312                                         conjugate_qt_qt(q1, vod->oldquat);
1313                                         mul_qt_qtqt(q1, q1, rv3d->viewquat);
1314
1315                                         conjugate_qt(q1); /* conj == inv for unit quat */
1316                                         copy_v3_v3(rv3d->ofs, vod->ofs);
1317                                         sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
1318                                         mul_qt_v3(q1, rv3d->ofs);
1319                                         add_v3_v3(rv3d->ofs, vod->dyn_ofs);
1320                                 }
1321                         }
1322                 }
1323
1324                 viewops_data_free(C, op);
1325
1326                 ED_view3d_camera_lock_sync(v3d, rv3d);
1327
1328                 ED_region_tag_redraw(CTX_wm_region(C));
1329
1330                 return OPERATOR_FINISHED;
1331         }
1332 }
1333
1334 void VIEW3D_OT_ndof_orbit_zoom(struct wmOperatorType *ot)
1335 {
1336         /* identifiers */
1337         ot->name = "NDOF Orbit View with Zoom";
1338         ot->description = "Explore every angle of an object using the 3D mouse";
1339         ot->idname = "VIEW3D_OT_ndof_orbit_zoom";
1340
1341         /* api callbacks */
1342         ot->invoke = ndof_orbit_zoom_invoke;
1343         ot->poll = ED_operator_view3d_active;
1344
1345         /* flags */
1346         ot->flag = 0;
1347 }
1348
1349 /* -- "pan" navigation
1350  * -- zoom or dolly?
1351  */
1352 static int ndof_pan_invoke(bContext *C, wmOperator *UNUSED(op), wmEvent *event)
1353 {
1354         if (event->type != NDOF_MOTION)
1355                 return OPERATOR_CANCELLED;
1356         else {
1357                 View3D *v3d = CTX_wm_view3d(C);
1358                 RegionView3D *rv3d = CTX_wm_region_view3d(C);
1359                 wmNDOFMotionData *ndof = (wmNDOFMotionData *) event->customdata;
1360
1361                 ED_view3d_camera_lock_init(v3d, rv3d);
1362
1363                 rv3d->rot_angle = 0.f; /* we're panning here! so erase any leftover rotation from other operators */
1364
1365                 if (ndof->progress != P_FINISHING) {
1366                         const float dt = ndof->dt;
1367                         float view_inv[4];
1368 #if 0 /* ------------------------------------------- zoom with Z */
1369                         /* tune these until everything feels right */
1370                         const float zoom_sensitivity = 1.f;
1371                         const float pan_sensitivity = 1.f;
1372
1373                         float pan_vec[3] = {
1374                                 ndof->tx, ndof->ty, 0
1375                         };
1376
1377                         /* "zoom in" or "translate"? depends on zoom mode in user settings? */
1378                         if (ndof->tz) {
1379                                 float zoom_distance = zoom_sensitivity * rv3d->dist * dt * ndof->tz;
1380                                 rv3d->dist += zoom_distance;
1381                         }
1382
1383                         mul_v3_fl(pan_vec, pan_sensitivity * rv3d->dist * dt);
1384 #else /* ------------------------------------------------------- dolly with Z */
1385                         float speed = rv3d->dist; /* uses distance from pivot to define dolly */
1386
1387                         /* tune these until everything feels right */
1388                         const float forward_sensitivity = 1.f;
1389                         const float vertical_sensitivity = 0.4f;
1390                         const float lateral_sensitivity = 0.6f;
1391
1392                         float pan_vec[3];
1393
1394                         if (U.ndof_flag & NDOF_PANX_INVERT_AXIS)
1395                                 pan_vec[0] = -lateral_sensitivity * ndof->tvec[0];
1396                         else
1397                                 pan_vec[0] = lateral_sensitivity * ndof->tvec[0];
1398
1399                         if (U.ndof_flag & NDOF_PANZ_INVERT_AXIS)
1400                                 pan_vec[1] = -vertical_sensitivity * ndof->tvec[1];
1401                         else
1402                                 pan_vec[1] = vertical_sensitivity * ndof->tvec[1];
1403
1404                         if (U.ndof_flag & NDOF_PANY_INVERT_AXIS)
1405                                 pan_vec[2] = -forward_sensitivity * ndof->tvec[2];
1406                         else
1407                                 pan_vec[2] = forward_sensitivity * ndof->tvec[2];
1408
1409                         mul_v3_fl(pan_vec, speed * dt);
1410 #endif
1411                         /* transform motion from view to world coordinates */
1412                         invert_qt_qt(view_inv, rv3d->viewquat);
1413                         mul_qt_v3(view_inv, pan_vec);
1414
1415                         /* move center of view opposite of hand motion (this is camera mode, not object mode) */
1416                         sub_v3_v3(rv3d->ofs, pan_vec);
1417                 }
1418
1419                 ED_view3d_camera_lock_sync(v3d, rv3d);
1420
1421                 ED_region_tag_redraw(CTX_wm_region(C));
1422
1423                 return OPERATOR_FINISHED;
1424         }
1425 }
1426
1427 void VIEW3D_OT_ndof_pan(struct wmOperatorType *ot)
1428 {
1429         /* identifiers */
1430         ot->name = "NDOF Pan View";
1431         ot->description = "Position your viewpoint with the 3D mouse";
1432         ot->idname = "VIEW3D_OT_ndof_pan";
1433
1434         /* api callbacks */
1435         ot->invoke = ndof_pan_invoke;
1436         ot->poll = ED_operator_view3d_active;
1437
1438         /* flags */
1439         ot->flag = 0;
1440 }
1441
1442
1443 /*
1444  * this is basically just the pan only code + the rotate only code crammed into one function that does both
1445  */
1446 static int ndof_all_invoke(bContext *C, wmOperator *op, wmEvent *event)
1447 {
1448         if (event->type != NDOF_MOTION) {
1449                 return OPERATOR_CANCELLED;
1450         }
1451         else {
1452
1453                 ViewOpsData *vod;
1454                 RegionView3D *rv3d;
1455
1456                 View3D *v3d = CTX_wm_view3d(C);
1457                 wmNDOFMotionData *ndof = (wmNDOFMotionData *) event->customdata;
1458
1459                 viewops_data_create(C, op, event);
1460                 vod = op->customdata;
1461                 rv3d = vod->rv3d;
1462
1463                 ED_view3d_camera_lock_init(v3d, rv3d);
1464
1465                 if (ndof->progress != P_FINISHING) {
1466
1467                         const float dt = ndof->dt;
1468                         float view_inv[4];
1469
1470                         float speed = rv3d->dist; /* uses distance from pivot to define dolly */
1471
1472                         /* tune these until everything feels right */
1473                         const float forward_sensitivity = 1.f;
1474                         const float vertical_sensitivity = 0.4f;
1475                         const float lateral_sensitivity = 0.6f;
1476                         float pan_vec[3];
1477                         const float rot_sensitivity = 1.f;
1478
1479                         /* inverse view */
1480                         invert_qt_qt(view_inv, rv3d->viewquat);
1481
1482                         if (U.ndof_flag & NDOF_PANX_INVERT_AXIS)
1483                                 pan_vec[0] = -lateral_sensitivity * ndof->tvec[0];
1484                         else
1485                                 pan_vec[0] = lateral_sensitivity * ndof->tvec[0];
1486
1487                         if (U.ndof_flag & NDOF_PANZ_INVERT_AXIS)
1488                                 pan_vec[1] = -vertical_sensitivity * ndof->tvec[1];
1489                         else
1490                                 pan_vec[1] = vertical_sensitivity * ndof->tvec[1];
1491
1492                         if (U.ndof_flag & NDOF_PANY_INVERT_AXIS)
1493                                 pan_vec[2] = -forward_sensitivity * ndof->tvec[2];
1494                         else
1495                                 pan_vec[2] = forward_sensitivity * ndof->tvec[2];
1496
1497                         mul_v3_fl(pan_vec, speed * dt);
1498
1499                         /* transform motion from view to world coordinates */
1500                         mul_qt_v3(view_inv, pan_vec);
1501
1502                         /* move center of view opposite of hand motion (this is camera mode, not object mode) */
1503                         sub_v3_v3(rv3d->ofs, pan_vec);
1504
1505                         if (U.ndof_flag & NDOF_TURNTABLE) {
1506                                 /* turntable view code by John Aughey, adapted for 3D mouse by [mce] */
1507                                 float angle, rot[4];
1508                                 float xvec[3] = {1, 0, 0};
1509
1510                                 /* Determine the direction of the x vector (for rotating up and down) */
1511                                 mul_qt_v3(view_inv, xvec);
1512
1513                                 /* Perform the up/down rotation */
1514                                 angle = rot_sensitivity * dt * ndof->rx;
1515                                 if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1516                                         angle = -angle;
1517                                 rot[0] = cos(angle);
1518                                 mul_v3_v3fl(rot + 1, xvec, sin(angle));
1519                                 mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1520
1521                                 /* Perform the orbital rotation */
1522                                 angle = rot_sensitivity * dt * ndof->ry;
1523                                 if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1524                                         angle = -angle;
1525
1526                                 /* update the onscreen doo-dad */
1527                                 rv3d->rot_angle = angle;
1528                                 rv3d->rot_axis[0] = 0;
1529                                 rv3d->rot_axis[1] = 0;
1530                                 rv3d->rot_axis[2] = 1;
1531
1532                                 rot[0] = cos(angle);
1533                                 rot[1] = rot[2] = 0.0;
1534                                 rot[3] = sin(angle);
1535                                 mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1536
1537                         }
1538                         else {
1539
1540                                 float rot[4];
1541                                 float axis[3];
1542                                 float angle = rot_sensitivity * ndof_to_axis_angle(ndof, axis);
1543
1544                                 if (U.ndof_flag & NDOF_ROLL_INVERT_AXIS)
1545                                         axis[2] = -axis[2];
1546
1547                                 if (U.ndof_flag & NDOF_TILT_INVERT_AXIS)
1548                                         axis[0] = -axis[0];
1549
1550                                 if (U.ndof_flag & NDOF_ROTATE_INVERT_AXIS)
1551                                         axis[1] = -axis[1];
1552
1553                                 /* transform rotation axis from view to world coordinates */
1554                                 mul_qt_v3(view_inv, axis);
1555
1556                                 /* update the onscreen doo-dad */
1557                                 rv3d->rot_angle = angle;
1558                                 copy_v3_v3(rv3d->rot_axis, axis);
1559
1560                                 axis_angle_to_quat(rot, axis, angle);
1561
1562                                 /* apply rotation */
1563                                 mul_qt_qtqt(rv3d->viewquat, rv3d->viewquat, rot);
1564
1565                         }
1566
1567                         /* rotate around custom center */
1568                         if (vod->use_dyn_ofs) {
1569                                 float q1[4];
1570
1571                                 /* compute the post multiplication quat, to rotate the offset correctly */
1572                                 conjugate_qt_qt(q1, vod->oldquat);
1573                                 mul_qt_qtqt(q1, q1, rv3d->viewquat);
1574
1575                                 conjugate_qt(q1); /* conj == inv for unit quat */
1576                                 copy_v3_v3(rv3d->ofs, vod->ofs);
1577                                 sub_v3_v3(rv3d->ofs, vod->dyn_ofs);
1578                                 mul_qt_v3(q1, rv3d->ofs);
1579                                 add_v3_v3(rv3d->ofs, vod->dyn_ofs);
1580                         }
1581
1582                 }
1583
1584                 viewops_data_free(C, op);
1585
1586                 ED_view3d_camera_lock_sync(v3d, rv3d);
1587
1588                 ED_region_tag_redraw(CTX_wm_region(C));
1589
1590                 return OPERATOR_FINISHED;
1591         }
1592 }
1593
1594 void VIEW3D_OT_ndof_all(struct wmOperatorType *ot)
1595 {
1596         /* identifiers */
1597         ot->name = "NDOF Move View";
1598         ot->description = "Position your viewpoint with the 3D mouse";
1599         ot->idname = "VIEW3D_OT_ndof_all";
1600
1601         /* api callbacks */
1602         ot->invoke = ndof_all_invoke;
1603         ot->poll = ED_operator_view3d_active;
1604
1605         /* flags */
1606         ot->flag = 0;
1607 }
1608
1609 /* ************************ viewmove ******************************** */
1610
1611
1612 /* NOTE: these defines are saved in keymap files, do not change values but just add new ones */
1613
1614 /* called in transform_ops.c, on each regeneration of keymaps  */
1615 void viewmove_modal_keymap(wmKeyConfig *keyconf)
1616 {
1617         static EnumPropertyItem modal_items[] = {
1618                 {VIEW_MODAL_CONFIRM,    "CONFIRM", 0, "Confirm", ""},
1619
1620                 {VIEWROT_MODAL_SWITCH_ZOOM, "SWITCH_TO_ZOOM", 0, "Switch to Zoom"},
1621                 {VIEWROT_MODAL_SWITCH_ROTATE, "SWITCH_TO_ROTATE", 0, "Switch to Rotate"},
1622
1623                 {0, NULL, 0, NULL, NULL}
1624         };
1625
1626         wmKeyMap *keymap = WM_modalkeymap_get(keyconf, "View3D Move Modal");
1627
1628         /* this function is called for each spacetype, only needs to add map once */
1629         if (keymap && keymap->modal_items) return;
1630
1631         keymap = WM_modalkeymap_add(keyconf, "View3D Move Modal", modal_items);
1632
1633         /* items for modal map */
1634         WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, KM_ANY, 0, VIEW_MODAL_CONFIRM);
1635         WM_modalkeymap_add_item(keymap, ESCKEY, KM_PRESS, KM_ANY, 0, VIEW_MODAL_CONFIRM);
1636
1637         /* disabled mode switching for now, can re-implement better, later on */
1638 #if 0
1639         WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ZOOM);
1640         WM_modalkeymap_add_item(keymap, LEFTCTRLKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ZOOM);
1641         WM_modalkeymap_add_item(keymap, LEFTSHIFTKEY, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE);
1642 #endif
1643
1644         /* assign map to operators */
1645         WM_modalkeymap_assign(keymap, "VIEW3D_OT_move");
1646 }
1647
1648
1649 static void viewmove_apply(ViewOpsData *vod, int x, int y)
1650 {
1651         if ((vod->rv3d->persp == RV3D_CAMOB) && !ED_view3d_camera_lock_check(vod->v3d, vod->rv3d)) {
1652                 const float zoomfac = BKE_screen_view3d_zoom_to_fac((float)vod->rv3d->camzoom) * 2.0f;
1653                 vod->rv3d->camdx += (vod->oldx - x) / (vod->ar->winx * zoomfac);
1654                 vod->rv3d->camdy += (vod->oldy - y) / (vod->ar->winy * zoomfac);
1655                 CLAMP(vod->rv3d->camdx, -1.0f, 1.0f);
1656                 CLAMP(vod->rv3d->camdy, -1.0f, 1.0f);
1657         }
1658         else {
1659                 float dvec[3];
1660                 float mval_f[2];
1661
1662                 mval_f[0] = x - vod->oldx;
1663                 mval_f[1] = y - vod->oldy;
1664                 ED_view3d_win_to_delta(vod->ar, mval_f, dvec);
1665
1666                 add_v3_v3(vod->rv3d->ofs, dvec);
1667
1668                 if (vod->rv3d->viewlock & RV3D_BOXVIEW)
1669                         view3d_boxview_sync(vod->sa, vod->ar);
1670         }
1671
1672         vod->oldx = x;
1673         vod->oldy = y;
1674
1675         ED_view3d_camera_lock_sync(vod->v3d, vod->rv3d);
1676
1677         ED_region_tag_redraw(vod->ar);
1678 }
1679
1680
1681 static int viewmove_modal(bContext *C, wmOperator *op, wmEvent *event)
1682 {
1683
1684         ViewOpsData *vod = op->customdata;
1685         short event_code = VIEW_PASS;
1686
1687         /* execute the events */
1688         if (event->type == MOUSEMOVE) {
1689                 event_code = VIEW_APPLY;
1690         }
1691         else if (event->type == EVT_MODAL_MAP) {
1692                 switch (event->val) {
1693                         case VIEW_MODAL_CONFIRM:
1694                                 event_code = VIEW_CONFIRM;
1695                                 break;
1696                         case VIEWROT_MODAL_SWITCH_ZOOM:
1697                                 WM_operator_name_call(C, "VIEW3D_OT_zoom", WM_OP_INVOKE_DEFAULT, NULL);
1698                                 event_code = VIEW_CONFIRM;
1699                                 break;
1700                         case VIEWROT_MODAL_SWITCH_ROTATE:
1701                                 WM_operator_name_call(C, "VIEW3D_OT_rotate", WM_OP_INVOKE_DEFAULT, NULL);
1702                                 event_code = VIEW_CONFIRM;
1703                                 break;
1704                 }
1705         }
1706         else if (event->type == vod->origkey && event->val == KM_RELEASE) {
1707                 event_code = VIEW_CONFIRM;
1708         }
1709
1710         if (event_code == VIEW_APPLY) {
1711                 viewmove_apply(vod, event->x, event->y);
1712         }
1713         else if (event_code == VIEW_CONFIRM) {
1714                 ED_view3d_depth_tag_update(vod->rv3d);
1715
1716                 viewops_data_free(C, op);
1717
1718                 return OPERATOR_FINISHED;
1719         }
1720
1721         return OPERATOR_RUNNING_MODAL;
1722 }
1723
1724 static int viewmove_invoke(bContext *C, wmOperator *op, wmEvent *event)
1725 {
1726         ViewOpsData *vod;
1727
1728         /* makes op->customdata */
1729         viewops_data_create(C, op, event);
1730         vod = op->customdata;
1731
1732         if (event->type == MOUSEPAN) {
1733                 /* invert it, trackpad scroll follows same principle as 2d windows this way */
1734                 viewmove_apply(vod, 2 * event->x - event->prevx, 2 * event->y - event->prevy);
1735                 ED_view3d_depth_tag_update(vod->rv3d);
1736
1737                 viewops_data_free(C, op);
1738
1739                 return OPERATOR_FINISHED;
1740         }
1741         else {
1742                 /* add temp handler */
1743                 WM_event_add_modal_handler(C, op);
1744
1745                 return OPERATOR_RUNNING_MODAL;
1746         }
1747 }
1748
1749 static int viewmove_cancel(bContext *C, wmOperator *op)
1750 {
1751         viewops_data_free(C, op);
1752
1753         return OPERATOR_CANCELLED;
1754 }
1755
1756 void VIEW3D_OT_move(wmOperatorType *ot)
1757 {
1758
1759         /* identifiers */
1760         ot->name = "Move View";
1761         ot->description = "Move the view";
1762         ot->idname = "VIEW3D_OT_move";
1763
1764         /* api callbacks */
1765         ot->invoke = viewmove_invoke;
1766         ot->modal = viewmove_modal;
1767         ot->poll = ED_operator_view3d_active;
1768         ot->cancel = viewmove_cancel;
1769
1770         /* flags */
1771         ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_POINTER;
1772 }
1773
1774 /* ************************ viewzoom ******************************** */
1775
1776 /* viewdolly_modal_keymap has an exact copy of this, apply fixes to both */
1777 /* called in transform_ops.c, on each regeneration of keymaps  */
1778 void viewzoom_modal_keymap(wmKeyConfig *keyconf)
1779 {
1780         static EnumPropertyItem modal_items[] = {
1781                 {VIEW_MODAL_CONFIRM,    "CONFIRM", 0, "Confirm", ""},
1782
1783                 {VIEWROT_MODAL_SWITCH_ROTATE, "SWITCH_TO_ROTATE", 0, "Switch to Rotate"},
1784                 {VIEWROT_MODAL_SWITCH_MOVE, "SWITCH_TO_MOVE", 0, "Switch to Move"},
1785
1786                 {0, NULL, 0, NULL, NULL}
1787         };
1788
1789         wmKeyMap *keymap = WM_modalkeymap_get(keyconf, "View3D Zoom Modal");
1790
1791         /* this function is called for each spacetype, only needs to add map once */
1792         if (keymap && keymap->modal_items) return;
1793
1794         keymap = WM_modalkeymap_add(keyconf, "View3D Zoom Modal", modal_items);
1795
1796         /* items for modal map */
1797         WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, KM_ANY, 0, VIEW_MODAL_CONFIRM);
1798         WM_modalkeymap_add_item(keymap, ESCKEY, KM_PRESS, KM_ANY, 0, VIEW_MODAL_CONFIRM);
1799
1800         /* disabled mode switching for now, can re-implement better, later on */
1801 #if 0
1802         WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE);
1803         WM_modalkeymap_add_item(keymap, LEFTCTRLKEY, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE);
1804         WM_modalkeymap_add_item(keymap, LEFTSHIFTKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_MOVE);
1805 #endif
1806
1807         /* assign map to operators */
1808         WM_modalkeymap_assign(keymap, "VIEW3D_OT_zoom");
1809 }
1810
1811 static void view_zoom_mouseloc(ARegion *ar, float dfac, int mx, int my)
1812 {
1813         RegionView3D *rv3d = ar->regiondata;
1814
1815         if (U.uiflag & USER_ZOOM_TO_MOUSEPOS) {
1816                 float dvec[3];
1817                 float tvec[3];
1818                 float tpos[3];
1819                 float mval_f[2];
1820                 float new_dist;
1821
1822                 negate_v3_v3(tpos, rv3d->ofs);
1823
1824                 /* Project cursor position into 3D space */
1825                 initgrabz(rv3d, tpos[0], tpos[1], tpos[2]);
1826
1827                 mval_f[0] = (float)(((mx - ar->winrct.xmin) * 2) - ar->winx) / 2.0f;
1828                 mval_f[1] = (float)(((my - ar->winrct.ymin) * 2) - ar->winy) / 2.0f;
1829                 ED_view3d_win_to_delta(ar, mval_f, dvec);
1830
1831                 /* Calculate view target position for dolly */
1832                 add_v3_v3v3(tvec, tpos, dvec);
1833                 negate_v3(tvec);
1834
1835                 /* Offset to target position and dolly */
1836                 new_dist = rv3d->dist * dfac;
1837
1838                 copy_v3_v3(rv3d->ofs, tvec);
1839                 rv3d->dist = new_dist;
1840
1841                 /* Calculate final offset */
1842                 madd_v3_v3v3fl(rv3d->ofs, tvec, dvec, dfac);
1843         }
1844         else {
1845                 rv3d->dist *= dfac;
1846         }
1847 }
1848
1849
1850 static void viewzoom_apply(ViewOpsData *vod, const int x, const int y, const short viewzoom, const short zoom_invert)
1851 {
1852         float zfac = 1.0;
1853         short use_cam_zoom;
1854
1855         use_cam_zoom = (vod->rv3d->persp == RV3D_CAMOB) && !(vod->rv3d->is_persp && ED_view3d_camera_lock_check(vod->v3d, vod->rv3d));
1856
1857         if (use_cam_zoom) {
1858                 float delta;
1859                 delta = (x - vod->origx + y - vod->origy) / 10.0f;
1860                 vod->rv3d->camzoom = vod->camzoom0 + (zoom_invert ? -delta : delta);
1861
1862                 CLAMP(vod->rv3d->camzoom, RV3D_CAMZOOM_MIN, RV3D_CAMZOOM_MAX);
1863         }
1864
1865         if (viewzoom == USER_ZOOM_CONT) {
1866                 double time = PIL_check_seconds_timer();
1867                 float time_step = (float)(time - vod->timer_lastdraw);
1868                 float fac;
1869
1870                 if (U.uiflag & USER_ZOOM_HORIZ) {
1871                         fac = (float)(vod->origx - x);
1872                 }
1873                 else {
1874                         fac = (float)(vod->origy - y);
1875                 }
1876
1877                 if (zoom_invert) {
1878                         fac = -fac;
1879                 }
1880
1881                 /* oldstyle zoom */
1882                 zfac = 1.0f + ((fac / 20.0f) * time_step);
1883                 vod->timer_lastdraw = time;
1884         }
1885         else if (viewzoom == USER_ZOOM_SCALE) {
1886                 int ctr[2], len1, len2;
1887                 /* method which zooms based on how far you move the mouse */
1888
1889                 ctr[0] = BLI_rcti_cent_x(&vod->ar->winrct);
1890                 ctr[1] = BLI_rcti_cent_y(&vod->ar->winrct);
1891
1892                 len1 = (int)sqrt((ctr[0] - x) * (ctr[0] - x) + (ctr[1] - y) * (ctr[1] - y)) + 5;
1893                 len2 = (int)sqrt((ctr[0] - vod->origx) * (ctr[0] - vod->origx) + (ctr[1] - vod->origy) * (ctr[1] - vod->origy)) + 5;
1894
1895                 zfac = vod->dist0 * ((float)len2 / len1) / vod->rv3d->dist;
1896         }
1897         else {  /* USER_ZOOM_DOLLY */
1898                 float len1, len2;
1899
1900                 if (U.uiflag & USER_ZOOM_HORIZ) {
1901                         len1 = (vod->ar->winrct.xmax - x) + 5;
1902                         len2 = (vod->ar->winrct.xmax - vod->origx) + 5;
1903                 }
1904                 else {
1905                         len1 = (vod->ar->winrct.ymax - y) + 5;
1906                         len2 = (vod->ar->winrct.ymax - vod->origy) + 5;
1907                 }
1908                 if (zoom_invert) {
1909                         SWAP(float, len1, len2);
1910                 }
1911
1912                 if (use_cam_zoom) {
1913                         /* zfac is ignored in this case, see below */
1914 #if 0
1915                         zfac = vod->camzoom0 * (2.0f * ((len1 / len2) - 1.0f) + 1.0f) / vod->rv3d->camzoom;
1916 #endif
1917                 }
1918                 else {
1919                         zfac = vod->dist0 * (2.0f * ((len1 / len2) - 1.0f) + 1.0f) / vod->rv3d->dist;
1920                 }
1921         }
1922
1923         if (!use_cam_zoom) {
1924                 if (zfac != 1.0f && zfac * vod->rv3d->dist > 0.001f * vod->grid &&
1925                     zfac * vod->rv3d->dist < 10.0f * vod->far)
1926                 {
1927                         view_zoom_mouseloc(vod->ar, zfac, vod->oldx, vod->oldy);
1928                 }
1929         }
1930
1931         /* these limits were in old code too */
1932         if (vod->rv3d->dist < 0.001f * vod->grid) vod->rv3d->dist = 0.001f * vod->grid;
1933         if (vod->rv3d->dist > 10.0f * vod->far) vod->rv3d->dist = 10.0f * vod->far;
1934
1935         if (vod->rv3d->viewlock & RV3D_BOXVIEW)
1936                 view3d_boxview_sync(vod->sa, vod->ar);
1937
1938         ED_view3d_camera_lock_sync(vod->v3d, vod->rv3d);
1939
1940         ED_region_tag_redraw(vod->ar);
1941 }
1942
1943
1944 static int viewzoom_modal(bContext *C, wmOperator *op, wmEvent *event)
1945 {
1946         ViewOpsData *vod = op->customdata;
1947         short event_code = VIEW_PASS;
1948
1949         /* execute the events */
1950         if (event->type == TIMER && event->customdata == vod->timer) {
1951                 /* continuous zoom */
1952                 event_code = VIEW_APPLY;
1953         }
1954         else if (event->type == MOUSEMOVE) {
1955                 event_code = VIEW_APPLY;
1956         }
1957         else if (event->type == EVT_MODAL_MAP) {
1958                 switch (event->val) {
1959                         case VIEW_MODAL_CONFIRM:
1960                                 event_code = VIEW_CONFIRM;
1961                                 break;
1962                         case VIEWROT_MODAL_SWITCH_MOVE:
1963                                 WM_operator_name_call(C, "VIEW3D_OT_move", WM_OP_INVOKE_DEFAULT, NULL);
1964                                 event_code = VIEW_CONFIRM;
1965                                 break;
1966                         case VIEWROT_MODAL_SWITCH_ROTATE:
1967                                 WM_operator_name_call(C, "VIEW3D_OT_rotate", WM_OP_INVOKE_DEFAULT, NULL);
1968                                 event_code = VIEW_CONFIRM;
1969                                 break;
1970                 }
1971         }
1972         else if (event->type == vod->origkey && event->val == KM_RELEASE) {
1973                 event_code = VIEW_CONFIRM;
1974         }
1975
1976         if (event_code == VIEW_APPLY) {
1977                 viewzoom_apply(vod, event->x, event->y, U.viewzoom, (U.uiflag & USER_ZOOM_INVERT) != 0);
1978         }
1979         else if (event_code == VIEW_CONFIRM) {
1980                 ED_view3d_depth_tag_update(vod->rv3d);
1981                 viewops_data_free(C, op);
1982
1983                 return OPERATOR_FINISHED;
1984         }
1985
1986         return OPERATOR_RUNNING_MODAL;
1987 }
1988
1989 static int viewzoom_exec(bContext *C, wmOperator *op)
1990 {
1991         View3D *v3d;
1992         RegionView3D *rv3d;
1993         ScrArea *sa;
1994         ARegion *ar;
1995         short use_cam_zoom;
1996
1997         int delta = RNA_int_get(op->ptr, "delta");
1998         int mx, my;
1999
2000         if (op->customdata) {
2001                 ViewOpsData *vod = op->customdata;
2002
2003                 sa = vod->sa;
2004                 ar = vod->ar;
2005         }
2006         else {
2007                 sa = CTX_wm_area(C);
2008                 ar = CTX_wm_region(C);
2009         }
2010
2011         v3d = sa->spacedata.first;
2012         rv3d = ar->regiondata;
2013
2014         mx = RNA_struct_property_is_set(op->ptr, "mx") ? RNA_int_get(op->ptr, "mx") : ar->winx / 2;
2015         my = RNA_struct_property_is_set(op->ptr, "my") ? RNA_int_get(op->ptr, "my") : ar->winy / 2;
2016
2017         use_cam_zoom = (rv3d->persp == RV3D_CAMOB) && !(rv3d->is_persp && ED_view3d_camera_lock_check(v3d, rv3d));
2018
2019         if (delta < 0) {
2020                 /* this min and max is also in viewmove() */
2021                 if (use_cam_zoom) {
2022                         rv3d->camzoom -= 10.0f;
2023                         if (rv3d->camzoom < RV3D_CAMZOOM_MIN) rv3d->camzoom = RV3D_CAMZOOM_MIN;
2024                 }
2025                 else if (rv3d->dist < 10.0f * v3d->far) {
2026                         view_zoom_mouseloc(ar, 1.2f, mx, my);
2027                 }
2028         }
2029         else {
2030                 if (use_cam_zoom) {
2031                         rv3d->camzoom += 10.0f;
2032                         if (rv3d->camzoom > RV3D_CAMZOOM_MAX) rv3d->camzoom = RV3D_CAMZOOM_MAX;
2033                 }
2034                 else if (rv3d->dist > 0.001f * v3d->grid) {
2035                         view_zoom_mouseloc(ar, 0.83333f, mx, my);
2036                 }
2037         }
2038
2039         if (rv3d->viewlock & RV3D_BOXVIEW)
2040                 view3d_boxview_sync(sa, ar);
2041
2042         ED_view3d_depth_tag_update(rv3d);
2043
2044         ED_view3d_camera_lock_sync(v3d, rv3d);
2045
2046         ED_region_tag_redraw(ar);
2047
2048         viewops_data_free(C, op);
2049
2050         return OPERATOR_FINISHED;
2051 }
2052
2053 /* this is an exact copy of viewzoom_modal_keymap */
2054 /* called in transform_ops.c, on each regeneration of keymaps  */
2055 void viewdolly_modal_keymap(wmKeyConfig *keyconf)
2056 {
2057         static EnumPropertyItem modal_items[] = {
2058                 {VIEW_MODAL_CONFIRM,    "CONFIRM", 0, "Confirm", ""},
2059
2060                 {VIEWROT_MODAL_SWITCH_ROTATE, "SWITCH_TO_ROTATE", 0, "Switch to Rotate"},
2061                 {VIEWROT_MODAL_SWITCH_MOVE, "SWITCH_TO_MOVE", 0, "Switch to Move"},
2062
2063                 {0, NULL, 0, NULL, NULL}
2064         };
2065
2066         wmKeyMap *keymap = WM_modalkeymap_get(keyconf, "View3D Dolly Modal");
2067
2068         /* this function is called for each spacetype, only needs to add map once */
2069         if (keymap && keymap->modal_items) return;
2070
2071         keymap = WM_modalkeymap_add(keyconf, "View3D Dolly Modal", modal_items);
2072
2073         /* items for modal map */
2074         WM_modalkeymap_add_item(keymap, MIDDLEMOUSE, KM_RELEASE, KM_ANY, 0, VIEW_MODAL_CONFIRM);
2075         WM_modalkeymap_add_item(keymap, ESCKEY, KM_PRESS, KM_ANY, 0, VIEW_MODAL_CONFIRM);
2076
2077         /* disabled mode switching for now, can re-implement better, later on */
2078 #if 0
2079         WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE);
2080         WM_modalkeymap_add_item(keymap, LEFTCTRLKEY, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE);
2081         WM_modalkeymap_add_item(keymap, LEFTSHIFTKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_MOVE);
2082 #endif
2083
2084         /* assign map to operators */
2085         WM_modalkeymap_assign(keymap, "VIEW3D_OT_dolly");
2086 }
2087
2088 /* viewdolly_invoke() copied this function, changes here may apply there */
2089 static int viewzoom_invoke(bContext *C, wmOperator *op, wmEvent *event)
2090 {
2091         ViewOpsData *vod;
2092
2093         /* makes op->customdata */
2094         viewops_data_create(C, op, event);
2095         vod = op->customdata;
2096
2097         /* if one or the other zoom position aren't set, set from event */
2098         if (!RNA_struct_property_is_set(op->ptr, "mx") || !RNA_struct_property_is_set(op->ptr, "my")) {
2099                 RNA_int_set(op->ptr, "mx", event->x);
2100                 RNA_int_set(op->ptr, "my", event->y);
2101         }
2102
2103         if (RNA_struct_property_is_set(op->ptr, "delta")) {
2104                 viewzoom_exec(C, op);
2105         }
2106         else {
2107                 if (event->type == MOUSEZOOM || event->type == MOUSEPAN) {
2108
2109                         if (U.uiflag & USER_ZOOM_HORIZ) {
2110                                 vod->origx = vod->oldx = event->x;
2111                                 viewzoom_apply(vod, event->prevx, event->prevy, USER_ZOOM_DOLLY, (U.uiflag & USER_ZOOM_INVERT) != 0);
2112                         }
2113                         else {
2114                                 /* Set y move = x move as MOUSEZOOM uses only x axis to pass magnification value */
2115                                 vod->origy = vod->oldy = vod->origy + event->x - event->prevx;
2116                                 viewzoom_apply(vod, event->prevx, event->prevy, USER_ZOOM_DOLLY, (U.uiflag & USER_ZOOM_INVERT) != 0);
2117                         }
2118                         ED_view3d_depth_tag_update(vod->rv3d);
2119
2120                         viewops_data_free(C, op);
2121                         return OPERATOR_FINISHED;
2122                 }
2123                 else {
2124                         if (U.viewzoom == USER_ZOOM_CONT) {
2125                                 /* needs a timer to continue redrawing */
2126                                 vod->timer = WM_event_add_timer(CTX_wm_manager(C), CTX_wm_window(C), TIMER, 0.01f);
2127                                 vod->timer_lastdraw = PIL_check_seconds_timer();
2128                         }
2129
2130                         /* add temp handler */
2131                         WM_event_add_modal_handler(C, op);
2132
2133                         return OPERATOR_RUNNING_MODAL;
2134                 }
2135         }
2136         return OPERATOR_FINISHED;
2137 }
2138
2139 static int viewzoom_cancel(bContext *C, wmOperator *op)
2140 {
2141         viewops_data_free(C, op);
2142
2143         return OPERATOR_CANCELLED;
2144 }
2145
2146 void VIEW3D_OT_zoom(wmOperatorType *ot)
2147 {
2148         /* identifiers */
2149         ot->name = "Zoom View";
2150         ot->description = "Zoom in/out in the view";
2151         ot->idname = "VIEW3D_OT_zoom";
2152
2153         /* api callbacks */
2154         ot->invoke = viewzoom_invoke;
2155         ot->exec = viewzoom_exec;
2156         ot->modal = viewzoom_modal;
2157         ot->poll = ED_operator_region_view3d_active;
2158         ot->cancel = viewzoom_cancel;
2159
2160         /* flags */
2161         ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_POINTER;
2162
2163         RNA_def_int(ot->srna, "delta", 0, INT_MIN, INT_MAX, "Delta", "", INT_MIN, INT_MAX);
2164         RNA_def_int(ot->srna, "mx", 0, 0, INT_MAX, "Zoom Position X", "", 0, INT_MAX);
2165         RNA_def_int(ot->srna, "my", 0, 0, INT_MAX, "Zoom Position Y", "", 0, INT_MAX);
2166 }
2167
2168
2169 /* ************************ viewdolly ******************************** */
2170 static void view_dolly_mouseloc(ARegion *ar, float orig_ofs[3], float dvec[3], float dfac)
2171 {
2172         RegionView3D *rv3d = ar->regiondata;
2173         madd_v3_v3v3fl(rv3d->ofs, orig_ofs, dvec, -(1.0f - dfac));
2174 }
2175
2176 static void viewdolly_apply(ViewOpsData *vod, int x, int y, const short zoom_invert)
2177 {
2178         float zfac = 1.0;
2179
2180         {
2181                 float len1, len2;
2182
2183                 if (U.uiflag & USER_ZOOM_HORIZ) {
2184                         len1 = (vod->ar->winrct.xmax - x) + 5;
2185                         len2 = (vod->ar->winrct.xmax - vod->origx) + 5;
2186                 }
2187                 else {
2188                         len1 = (vod->ar->winrct.ymax - y) + 5;
2189                         len2 = (vod->ar->winrct.ymax - vod->origy) + 5;
2190                 }
2191                 if (zoom_invert)
2192                         SWAP(float, len1, len2);
2193
2194                 zfac =  1.0f + ((len1 - len2) * 0.01f * vod->rv3d->dist);
2195         }
2196
2197         if (zfac != 1.0f)
2198                 view_dolly_mouseloc(vod->ar, vod->ofs, vod->mousevec, zfac);
2199
2200         if (vod->rv3d->viewlock & RV3D_BOXVIEW)
2201                 view3d_boxview_sync(vod->sa, vod->ar);
2202
2203         ED_view3d_camera_lock_sync(vod->v3d, vod->rv3d);
2204
2205         ED_region_tag_redraw(vod->ar);
2206 }
2207
2208
2209 static int viewdolly_modal(bContext *C, wmOperator *op, wmEvent *event)
2210 {
2211         ViewOpsData *vod = op->customdata;
2212         short event_code = VIEW_PASS;
2213
2214         /* execute the events */
2215         if (event->type == MOUSEMOVE) {
2216                 event_code = VIEW_APPLY;
2217         }
2218         else if (event->type == EVT_MODAL_MAP) {
2219                 switch (event->val) {
2220                         case VIEW_MODAL_CONFIRM:
2221                                 event_code = VIEW_CONFIRM;
2222                                 break;
2223                         case VIEWROT_MODAL_SWITCH_MOVE:
2224                                 WM_operator_name_call(C, "VIEW3D_OT_move", WM_OP_INVOKE_DEFAULT, NULL);
2225                                 event_code = VIEW_CONFIRM;
2226                                 break;
2227                         case VIEWROT_MODAL_SWITCH_ROTATE:
2228                                 WM_operator_name_call(C, "VIEW3D_OT_rotate", WM_OP_INVOKE_DEFAULT, NULL);
2229                                 event_code = VIEW_CONFIRM;
2230                                 break;
2231                 }
2232         }
2233         else if (event->type == vod->origkey && event->val == KM_RELEASE) {
2234                 event_code = VIEW_CONFIRM;
2235         }
2236
2237         if (event_code == VIEW_APPLY) {
2238                 viewdolly_apply(vod, event->x, event->y, (U.uiflag & USER_ZOOM_INVERT) != 0);
2239         }
2240         else if (event_code == VIEW_CONFIRM) {
2241                 ED_view3d_depth_tag_update(vod->rv3d);
2242                 viewops_data_free(C, op);
2243
2244                 return OPERATOR_FINISHED;
2245         }
2246
2247         return OPERATOR_RUNNING_MODAL;
2248 }
2249
2250 static int viewdolly_exec(bContext *C, wmOperator *op)
2251 {
2252         /* View3D *v3d; */
2253         RegionView3D *rv3d;
2254         ScrArea *sa;
2255         ARegion *ar;
2256         float mousevec[3];
2257
2258         int delta = RNA_int_get(op->ptr, "delta");
2259
2260         if (op->customdata) {
2261                 ViewOpsData *vod = op->customdata;
2262
2263                 sa = vod->sa;
2264                 ar = vod->ar;
2265                 copy_v3_v3(mousevec, vod->mousevec);
2266         }
2267         else {
2268                 sa = CTX_wm_area(C);
2269                 ar = CTX_wm_region(C);
2270                 negate_v3_v3(mousevec, ((RegionView3D *)ar->regiondata)->viewinv[2]);
2271                 normalize_v3(mousevec);
2272         }
2273
2274         /* v3d = sa->spacedata.first; */ /* UNUSED */
2275         rv3d = ar->regiondata;
2276
2277         /* overwrite the mouse vector with the view direction (zoom into the center) */
2278         if ((U.uiflag & USER_ZOOM_TO_MOUSEPOS) == 0) {
2279                 normalize_v3_v3(mousevec, rv3d->viewinv[2]);
2280         }
2281
2282         if (delta < 0) {
2283                 view_dolly_mouseloc(ar, rv3d->ofs, mousevec, 1.2f);
2284         }
2285         else {
2286                 view_dolly_mouseloc(ar, rv3d->ofs, mousevec, 0.83333f);
2287         }
2288
2289         if (rv3d->viewlock & RV3D_BOXVIEW)
2290                 view3d_boxview_sync(sa, ar);
2291
2292         ED_view3d_depth_tag_update(rv3d);
2293         ED_region_tag_redraw(ar);
2294
2295         viewops_data_free(C, op);
2296
2297         return OPERATOR_FINISHED;
2298 }
2299
2300 /* copied from viewzoom_invoke(), changes here may apply there */
2301 static int viewdolly_invoke(bContext *C, wmOperator *op, wmEvent *event)
2302 {
2303         ViewOpsData *vod;
2304
2305         /* makes op->customdata */
2306         viewops_data_create(C, op, event);
2307         vod = op->customdata;
2308
2309         /* if one or the other zoom position aren't set, set from event */
2310         if (!RNA_struct_property_is_set(op->ptr, "mx") || !RNA_struct_property_is_set(op->ptr, "my")) {
2311                 RNA_int_set(op->ptr, "mx", event->x);
2312                 RNA_int_set(op->ptr, "my", event->y);
2313         }
2314
2315         if (RNA_struct_property_is_set(op->ptr, "delta")) {
2316                 viewdolly_exec(C, op);
2317         }
2318         else {
2319                 /* overwrite the mouse vector with the view direction (zoom into the center) */
2320                 if ((U.uiflag & USER_ZOOM_TO_MOUSEPOS) == 0) {
2321                         negate_v3_v3(vod->mousevec, vod->rv3d->viewinv[2]);
2322                         normalize_v3(vod->mousevec);
2323                 }
2324
2325                 if (event->type == MOUSEZOOM) {
2326                         /* Bypass Zoom invert flag for track pads (pass FALSE always) */
2327
2328                         if (U.uiflag & USER_ZOOM_HORIZ) {
2329                                 vod->origx = vod->oldx = event->x;
2330                                 viewdolly_apply(vod, event->prevx, event->prevy, (U.uiflag & USER_ZOOM_INVERT) == 0);
2331                         }
2332                         else {
2333
2334                                 /* Set y move = x move as MOUSEZOOM uses only x axis to pass magnification value */
2335                                 vod->origy = vod->oldy = vod->origy + event->x - event->prevx;
2336                                 viewdolly_apply(vod, event->prevx, event->prevy, (U.uiflag & USER_ZOOM_INVERT) == 0);
2337                         }
2338                         ED_view3d_depth_tag_update(vod->rv3d);
2339
2340                         viewops_data_free(C, op);
2341                         return OPERATOR_FINISHED;
2342                 }
2343                 else {
2344                         /* add temp handler */
2345                         WM_event_add_modal_handler(C, op);
2346
2347                         return OPERATOR_RUNNING_MODAL;
2348                 }
2349         }
2350         return OPERATOR_FINISHED;
2351 }
2352
2353 /* like ED_operator_region_view3d_active but check its not in ortho view */
2354 static int viewdolly_poll(bContext *C)
2355 {
2356         RegionView3D *rv3d = CTX_wm_region_view3d(C);
2357
2358         if (rv3d) {
2359                 if (rv3d->persp == RV3D_PERSP) {
2360                         return 1;
2361                 }
2362                 else {
2363                         View3D *v3d = CTX_wm_view3d(C);
2364                         if (ED_view3d_camera_lock_check(v3d, rv3d)) {
2365                                 return 1;
2366                         }
2367                 }
2368         }
2369         return 0;
2370 }
2371
2372 static int viewdolly_cancel(bContext *C, wmOperator *op)
2373 {
2374         viewops_data_free(C, op);
2375
2376         return OPERATOR_CANCELLED;
2377 }
2378
2379 void VIEW3D_OT_dolly(wmOperatorType *ot)
2380 {
2381         /* identifiers */
2382         ot->name = "Dolly View";
2383         ot->description = "Dolly in/out in the view";
2384         ot->idname = "VIEW3D_OT_dolly";
2385
2386         /* api callbacks */
2387         ot->invoke = viewdolly_invoke;
2388         ot->exec = viewdolly_exec;
2389         ot->modal = viewdolly_modal;
2390         ot->poll = viewdolly_poll;
2391         ot->cancel = viewdolly_cancel;
2392
2393         /* flags */
2394         ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_POINTER;
2395
2396         RNA_def_int(ot->srna, "delta", 0, INT_MIN, INT_MAX, "Delta", "", INT_MIN, INT_MAX);
2397         RNA_def_int(ot->srna, "mx", 0, 0, INT_MAX, "Zoom Position X", "", 0, INT_MAX);
2398         RNA_def_int(ot->srna, "my", 0, 0, INT_MAX, "Zoom Position Y", "", 0, INT_MAX);
2399 }
2400
2401 static void view3d_from_minmax(bContext *C, View3D *v3d, ARegion *ar,
2402                                           const float min[3], const float max[3],
2403                                           int ok_dist)
2404 {
2405         RegionView3D *rv3d = ar->regiondata;
2406         float afm[3];
2407         float size;
2408
2409         /* SMOOTHVIEW */
2410         float new_ofs[3];
2411         float new_dist;
2412
2413         sub_v3_v3v3(afm, max, min);
2414         size = max_fff(afm[0], afm[1], afm[2]);
2415
2416         if (ok_dist) {
2417                 /* fix up zoom distance if needed */
2418
2419                 if (rv3d->is_persp) {
2420                         float lens, sensor_size;
2421                         /* offset the view based on the lens */
2422                         if (rv3d->persp == RV3D_CAMOB && ED_view3d_camera_lock_check(v3d, rv3d)) {
2423                                 CameraParams params;
2424                                 BKE_camera_params_init(&params);
2425                                 BKE_camera_params_from_object(&params, v3d->camera);
2426
2427                                 lens = params.lens;
2428                                 sensor_size = BKE_camera_sensor_size(params.sensor_fit, params.sensor_x, params.sensor_y);
2429                         }
2430                         else {
2431                                 lens = v3d->lens;
2432                                 sensor_size = DEFAULT_SENSOR_WIDTH;
2433                         }
2434                         size = ED_view3d_radius_to_persp_dist(focallength_to_fov(lens, sensor_size), size / 2.0f) * VIEW3D_MARGIN;
2435
2436                         /* do not zoom closer than the near clipping plane */
2437                         size = max_ff(size, v3d->near * 1.5f);
2438                 }
2439                 else { /* ortho */
2440                         if (size < 0.0001f) {
2441                                 /* bounding box was a single point so do not zoom */
2442                                 ok_dist = 0;
2443                         }
2444                         else {
2445                                 /* adjust zoom so it looks nicer */
2446                                 size = ED_view3d_radius_to_ortho_dist(v3d->lens, size / 2.0f) * VIEW3D_MARGIN;
2447                         }
2448                 }
2449         }
2450
2451         mid_v3_v3v3(new_ofs, min, max);
2452         negate_v3(new_ofs);
2453
2454         new_dist = size;
2455
2456         /* correction for window aspect ratio */
2457         if (ar->winy > 2 && ar->winx > 2) {
2458                 size = (float)ar->winx / (float)ar->winy;
2459                 if (size < 1.0f) size = 1.0f / size;
2460                 new_dist *= size;
2461         }
2462
2463         if (rv3d->persp == RV3D_CAMOB && !ED_view3d_camera_lock_check(v3d, rv3d)) {
2464                 rv3d->persp = RV3D_PERSP;
2465                 view3d_smooth_view(C, v3d, ar, v3d->camera, NULL, new_ofs, NULL, ok_dist ? &new_dist : NULL, NULL);
2466         }
2467         else {
2468                 view3d_smooth_view(C, v3d, ar, NULL, NULL, new_ofs, NULL, ok_dist ? &new_dist : NULL, NULL);
2469         }
2470
2471         /* smooth view does viewlock RV3D_BOXVIEW copy */
2472 }
2473
2474 /* same as view3d_from_minmax but for all regions (except cameras) */
2475 static void view3d_from_minmax_multi(bContext *C, View3D *v3d,
2476                                      const float min[3], const float max[3],
2477                                      const int ok_dist)
2478 {
2479         ScrArea *sa = CTX_wm_area(C);
2480         ARegion *ar;
2481         for (ar = sa->regionbase.first; ar; ar = ar->next) {
2482                 if (ar->regiontype == RGN_TYPE_WINDOW) {
2483                         RegionView3D *rv3d = ar->regiondata;
2484                         /* when using all regions, don't jump out of camera view,
2485                          * but _do_ allow locked cameras to be moved */
2486                         if ((rv3d->persp != RV3D_CAMOB) || ED_view3d_camera_lock_check(v3d, rv3d)) {
2487                                 view3d_from_minmax(C, v3d, ar, min, max, ok_dist);
2488                         }
2489                 }
2490         }
2491 }
2492
2493 static int view3d_all_exec(bContext *C, wmOperator *op) /* was view3d_home() in 2.4x */
2494 {
2495         ARegion *ar = CTX_wm_region(C);
2496         View3D *v3d = CTX_wm_view3d(C);
2497         Scene *scene = CTX_data_scene(C);
2498         Base *base;
2499         float *curs;
2500         const short use_all_regions = RNA_boolean_get(op->ptr, "use_all_regions");
2501         const short skip_camera = (ED_view3d_camera_lock_check(v3d, ar->regiondata) ||
2502                                    /* any one of the regions may be locked */
2503                                    (use_all_regions && v3d->flag2 & V3D_LOCK_CAMERA));
2504         int center = RNA_boolean_get(op->ptr, "center");
2505
2506         float min[3], max[3];
2507         int ok = 1, onedone = FALSE;
2508
2509         if (center) {
2510                 /* in 2.4x this also move the cursor to (0, 0, 0) (with shift+c). */
2511                 curs = give_cursor(scene, v3d);
2512                 zero_v3(min);
2513                 zero_v3(max);
2514                 zero_v3(curs);
2515         }
2516         else {
2517                 INIT_MINMAX(min, max);
2518         }
2519
2520         for (base = scene->base.first; base; base = base->next) {
2521                 if (BASE_VISIBLE(v3d, base)) {
2522                         onedone = TRUE;
2523
2524                         if (skip_camera && base->object == v3d->camera) {
2525                                 continue;
2526                         }
2527
2528                         BKE_object_minmax(base->object, min, max, FALSE);
2529                 }
2530         }
2531         if (!onedone) {
2532                 ED_region_tag_redraw(ar);
2533                 /* TODO - should this be cancel?
2534                  * I think no, because we always move the cursor, with or without
2535                  * object, but in this case there is no change in the scene,
2536                  * only the cursor so I choice a ED_region_tag like
2537                  * view3d_smooth_view do for the center_cursor.
2538                  * See bug #22640
2539                  */
2540                 return OPERATOR_FINISHED;
2541         }
2542
2543         if (ok == 0) {
2544                 return OPERATOR_FINISHED;
2545         }
2546
2547         if (use_all_regions) {
2548                 view3d_from_minmax_multi(C, v3d, min, max, TRUE);
2549         }
2550         else {
2551                 view3d_from_minmax(C, v3d, ar, min, max, TRUE);
2552         }
2553
2554         return OPERATOR_FINISHED;
2555 }
2556
2557
2558 void VIEW3D_OT_view_all(wmOperatorType *ot)
2559 {
2560         PropertyRNA *prop;
2561
2562         /* identifiers */
2563         ot->name = "View All";
2564         ot->description = "View all objects in scene";
2565         ot->idname = "VIEW3D_OT_view_all";
2566
2567         /* api callbacks */
2568         ot->exec = view3d_all_exec;
2569         ot->poll = ED_operator_region_view3d_active;
2570
2571         /* flags */
2572         ot->flag = 0;
2573
2574         prop = RNA_def_boolean(ot->srna, "use_all_regions", 0, "All Regions", "View selected for all regions");
2575         RNA_def_property_flag(prop, PROP_SKIP_SAVE);
2576         RNA_def_boolean(ot->srna, "center", 0, "Center", "");
2577 }
2578
2579 /* like a localview without local!, was centerview() in 2.4x */
2580 static int viewselected_exec(bContext *C, wmOperator *op)
2581 {
2582         ARegion *ar = CTX_wm_region(C);
2583         View3D *v3d = CTX_wm_view3d(C);
2584         Scene *scene = CTX_data_scene(C);
2585         Object *ob = OBACT;
2586         Object *obedit = CTX_data_edit_object(C);
2587         float min[3], max[3];
2588         int ok = 0, ok_dist = 1;
2589         const short use_all_regions = RNA_boolean_get(op->ptr, "use_all_regions");
2590         const short skip_camera = (ED_view3d_camera_lock_check(v3d, ar->regiondata) ||
2591                                    /* any one of the regions may be locked */
2592                                    (use_all_regions && v3d->flag2 & V3D_LOCK_CAMERA));
2593
2594         INIT_MINMAX(min, max);
2595
2596         if (ob && (ob->mode & OB_MODE_WEIGHT_PAINT)) {
2597                 /* hard-coded exception, we look for the one selected armature */
2598                 /* this is weak code this way, we should make a generic active/selection callback interface once... */
2599                 Base *base;
2600                 for (base = scene->base.first; base; base = base->next) {
2601                         if (TESTBASELIB(v3d, base)) {
2602                                 if (base->object->type == OB_ARMATURE)
2603                                         if (base->object->mode & OB_MODE_POSE)
2604                                                 break;
2605                         }
2606                 }
2607                 if (base)
2608                         ob = base->object;
2609         }
2610
2611
2612         if (obedit) {
2613                 ok = ED_view3d_minmax_verts(obedit, min, max);    /* only selected */
2614         }
2615         else if (ob && (ob->mode & OB_MODE_POSE)) {
2616                 if (ob->pose) {
2617                         bArmature *arm = ob->data;
2618                         bPoseChannel *pchan;
2619                         float vec[3];
2620
2621                         for (pchan = ob->pose->chanbase.first; pchan; pchan = pchan->next) {
2622                                 if (pchan->bone->flag & BONE_SELECTED) {
2623                                         if (pchan->bone->layer & arm->layer) {
2624                                                 bPoseChannel *pchan_tx = pchan->custom_tx ? pchan->custom_tx : pchan;
2625                                                 ok = 1;
2626                                                 mul_v3_m4v3(vec, ob->obmat, pchan_tx->pose_head);
2627                                                 minmax_v3v3_v3(min, max, vec);
2628                                                 mul_v3_m4v3(vec, ob->obmat, pchan_tx->pose_tail);
2629                                                 minmax_v3v3_v3(min, max, vec);
2630                                         }
2631                                 }
2632                         }
2633                 }
2634         }
2635         else if (paint_facesel_test(ob)) {
2636                 ok = paintface_minmax(ob, min, max);
2637         }
2638         else if (ob && (ob->mode & OB_MODE_PARTICLE_EDIT)) {
2639                 ok = PE_minmax(scene, min, max);
2640         }
2641         else if (ob && (ob->mode & OB_MODE_SCULPT)) {
2642                 ok = ED_sculpt_minmax(C, min, max);
2643                 ok_dist = 0; /* don't zoom */
2644         }
2645         else {
2646                 Base *base;
2647                 for (base = FIRSTBASE; base; base = base->next) {
2648                         if (TESTBASE(v3d, base)) {
2649
2650                                 if (skip_camera && base->object == v3d->camera) {
2651                                         continue;
2652                                 }
2653
2654                                 /* account for duplis */
2655                                 if (BKE_object_minmax_dupli(scene, base->object, min, max, FALSE) == 0)
2656                                         BKE_object_minmax(base->object, min, max, FALSE);  /* use if duplis not found */
2657
2658                                 ok = 1;
2659                         }
2660                 }
2661         }
2662
2663         if (ok == 0) {
2664                 return OPERATOR_FINISHED;
2665         }
2666
2667         if (use_all_regions) {
2668                 view3d_from_minmax_multi(C, v3d, min, max, ok_dist);
2669         }
2670         else {
2671                 view3d_from_minmax(C, v3d, ar, min, max, ok_dist);
2672         }
2673
2674 // XXX  BIF_view3d_previewrender_signal(curarea, PR_DBASE|PR_DISPRECT);
2675
2676         return OPERATOR_FINISHED;
2677 }
2678
2679 void VIEW3D_OT_view_selected(wmOperatorType *ot)
2680 {
2681         PropertyRNA *prop;
2682
2683         /* identifiers */
2684         ot->name = "View Selected";
2685         ot->description = "Move the view to the selection center";
2686         ot->idname = "VIEW3D_OT_view_selected";
2687
2688         /* api callbacks */
2689         ot->exec = viewselected_exec;
2690         ot->poll = ED_operator_region_view3d_active;
2691
2692         /* flags */
2693         ot->flag = 0;
2694
2695         /* rna later */
2696         prop = RNA_def_boolean(ot->srna, "use_all_regions", 0, "All Regions", "View selected for all regions");
2697         RNA_def_property_flag(prop, PROP_SKIP_SAVE);
2698 }
2699
2700 static int view_lock_clear_exec(bContext *C, wmOperator *UNUSED(op))
2701 {
2702         View3D *v3d = CTX_wm_view3d(C);
2703
2704         if (v3d) {
2705                 ED_view3D_lock_clear(v3d);
2706
2707                 WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, v3d);
2708
2709                 return OPERATOR_FINISHED;
2710         }
2711         else {
2712                 return OPERATOR_CANCELLED;
2713         }
2714 }
2715
2716 void VIEW3D_OT_view_lock_clear(wmOperatorType *ot)
2717 {
2718
2719         /* identifiers */
2720         ot->name = "View Lock Clear";
2721         ot->description = "Clear all view locking";
2722         ot->idname = "VIEW3D_OT_view_lock_clear";
2723
2724         /* api callbacks */
2725         ot->exec = view_lock_clear_exec;
2726         ot->poll = ED_operator_region_view3d_active;
2727
2728         /* flags */
2729         ot->flag = 0;
2730 }
2731
2732 static int view_lock_to_active_exec(bContext *C, wmOperator *UNUSED(op))
2733 {
2734         View3D *v3d = CTX_wm_view3d(C);
2735         Object *obact = CTX_data_active_object(C);
2736
2737         if (v3d) {
2738
2739                 ED_view3D_lock_clear(v3d);
2740
2741                 v3d->ob_centre = obact; /* can be NULL */
2742
2743                 if (obact && obact->type == OB_ARMATURE) {
2744                         if (obact->mode & OB_MODE_POSE) {
2745                                 bPoseChannel *pcham_act = BKE_pose_channel_active(obact);
2746                                 if (pcham_act) {
2747                                         BLI_strncpy(v3d->ob_centre_bone, pcham_act->name, sizeof(v3d->ob_centre_bone));
2748                                 }
2749                         }
2750                         else {
2751                                 EditBone *ebone_act = ((bArmature *)obact->data)->act_edbone;
2752                                 if (ebone_act) {
2753                                         BLI_strncpy(v3d->ob_centre_bone, ebone_act->name, sizeof(v3d->ob_centre_bone));
2754                                 }
2755                         }
2756                 }
2757
2758                 WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, v3d);
2759
2760                 return OPERATOR_FINISHED;
2761         }
2762         else {
2763                 return OPERATOR_CANCELLED;
2764         }
2765 }
2766
2767 void VIEW3D_OT_view_lock_to_active(wmOperatorType *ot)
2768 {
2769
2770         /* identifiers */
2771         ot->name = "View Lock to Active";
2772         ot->description = "Lock the view to the active object/bone";
2773         ot->idname = "VIEW3D_OT_view_lock_to_active";
2774
2775         /* api callbacks */
2776         ot->exec = view_lock_to_active_exec;
2777         ot->poll = ED_operator_region_view3d_active;
2778
2779         /* flags */
2780         ot->flag = 0;
2781 }
2782
2783 static int viewcenter_cursor_exec(bContext *C, wmOperator *UNUSED(op))
2784 {
2785         View3D *v3d = CTX_wm_view3d(C);
2786         RegionView3D *rv3d = CTX_wm_region_view3d(C);
2787         Scene *scene = CTX_data_scene(C);
2788
2789         if (rv3d) {
2790                 ARegion *ar = CTX_wm_region(C);
2791
2792                 /* non camera center */
2793                 float new_ofs[3];
2794                 negate_v3_v3(new_ofs, give_cursor(scene, v3d));
2795                 view3d_smooth_view(C, v3d, ar, NULL, NULL, new_ofs, NULL, NULL, NULL);
2796
2797                 /* smooth view does viewlock RV3D_BOXVIEW copy */
2798         }
2799
2800         return OPERATOR_FINISHED;
2801 }
2802
2803 void VIEW3D_OT_view_center_cursor(wmOperatorType *ot)
2804 {
2805         /* identifiers */
2806         ot->name = "Center View to Cursor";
2807         ot->description = "Center the view so that the cursor is in the middle of the view";
2808         ot->idname = "VIEW3D_OT_view_center_cursor";
2809
2810         /* api callbacks */
2811         ot->exec = viewcenter_cursor_exec;
2812         ot->poll = ED_operator_view3d_active;
2813
2814         /* flags */
2815         ot->flag = 0;
2816 }
2817
2818 static int view3d_center_camera_exec(bContext *C, wmOperator *UNUSED(op)) /* was view3d_home() in 2.4x */
2819 {
2820         Scene *scene = CTX_data_scene(C);
2821         float xfac, yfac;
2822         float size[2];
2823
2824         View3D *v3d;
2825         ARegion *ar;
2826         RegionView3D *rv3d;
2827
2828         /* no NULL check is needed, poll checks */
2829         ED_view3d_context_user_region(C, &v3d, &ar);
2830         rv3d = ar->regiondata;
2831
2832         rv3d->camdx = rv3d->camdy = 0.0f;
2833
2834         ED_view3d_calc_camera_border_size(scene, ar, v3d, rv3d, size);
2835
2836         /* 4px is just a little room from the edge of the area */
2837         xfac = (float)ar->winx / (float)(size[0] + 4);
2838         yfac = (float)ar->winy / (float)(size[1] + 4);
2839
2840         rv3d->camzoom = BKE_screen_view3d_zoom_from_fac(min_ff(xfac, yfac));
2841         CLAMP(rv3d->camzoom, RV3D_CAMZOOM_MIN, RV3D_CAMZOOM_MAX);
2842
2843         WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, CTX_wm_view3d(C));
2844
2845         return OPERATOR_FINISHED;
2846 }
2847
2848 void VIEW3D_OT_view_center_camera(wmOperatorType *ot)
2849 {
2850         /* identifiers */
2851         ot->name = "View Camera Center";
2852         ot->description = "Center the camera view";
2853         ot->idname = "VIEW3D_OT_view_center_camera";
2854
2855         /* api callbacks */
2856         ot->exec = view3d_center_camera_exec;
2857         ot->poll = view3d_camera_user_poll;
2858
2859         /* flags */
2860         ot->flag = 0;
2861 }
2862
2863 /* ********************* Set render border operator ****************** */
2864
2865 static int render_border_exec(bContext *C, wmOperator *op)
2866 {
2867         View3D *v3d = CTX_wm_view3d(C);
2868         ARegion *ar = CTX_wm_region(C);
2869         RegionView3D *rv3d = ED_view3d_context_rv3d(C);
2870
2871         Scene *scene = CTX_data_scene(C);
2872
2873         rcti rect;
2874         rctf vb, border;
2875
2876         int camera_only = RNA_boolean_get(op->ptr, "camera_only");
2877
2878         if (camera_only && rv3d->persp != RV3D_CAMOB)
2879                 return OPERATOR_PASS_THROUGH;
2880
2881         /* get border select values using rna */
2882         WM_operator_properties_border_to_rcti(op, &rect);
2883
2884         /* calculate range */
2885
2886         if (rv3d->persp == RV3D_CAMOB) {
2887                 ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &vb, FALSE);
2888         }
2889         else {
2890                 vb.xmin = 0;
2891                 vb.ymin = 0;
2892                 vb.xmax = ar->winx;
2893                 vb.ymax = ar->winy;
2894         }
2895
2896         border.xmin = ((float)rect.xmin - vb.xmin) / BLI_rctf_size_x(&vb);
2897         border.ymin = ((float)rect.ymin - vb.ymin) / BLI_rctf_size_y(&vb);
2898         border.xmax = ((float)rect.xmax - vb.xmin) / BLI_rctf_size_x(&vb);
2899         border.ymax = ((float)rect.ymax - vb.ymin) / BLI_rctf_size_y(&vb);
2900
2901         /* actually set border */
2902         CLAMP(border.xmin, 0.0f, 1.0f);
2903         CLAMP(border.ymin, 0.0f, 1.0f);
2904         CLAMP(border.xmax, 0.0f, 1.0f);
2905         CLAMP(border.ymax, 0.0f, 1.0f);
2906
2907         if (rv3d->persp == RV3D_CAMOB) {
2908                 scene->r.border = border;
2909
2910                 WM_event_add_notifier(C, NC_SCENE | ND_RENDER_OPTIONS, NULL);
2911         }
2912         else {
2913                 v3d->render_border = border;
2914
2915                 WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, NULL);
2916         }
2917
2918         /* drawing a border surrounding the entire camera view switches off border rendering
2919          * or the border covers no pixels */
2920         if ((border.xmin <= 0.0f && border.xmax >= 1.0f &&
2921              border.ymin <= 0.0f && border.ymax >= 1.0f) ||
2922             (border.xmin == border.xmax || border.ymin == border.ymax))
2923         {
2924                 if (rv3d->persp == RV3D_CAMOB)
2925                         scene->r.mode &= ~R_BORDER;
2926                 else
2927                         v3d->flag2 &= ~V3D_RENDER_BORDER;
2928         }
2929         else {
2930                 if (rv3d->persp == RV3D_CAMOB)
2931                         scene->r.mode |= R_BORDER;
2932                 else
2933                         v3d->flag2 |= V3D_RENDER_BORDER;
2934         }
2935
2936         return OPERATOR_FINISHED;
2937
2938 }
2939
2940 void VIEW3D_OT_render_border(wmOperatorType *ot)
2941 {
2942         /* identifiers */
2943         ot->name = "Set Render Border";
2944         ot->description = "Set the boundaries of the border render and enable border render";
2945         ot->idname = "VIEW3D_OT_render_border";
2946
2947         /* api callbacks */
2948         ot->invoke = WM_border_select_invoke;
2949         ot->exec = render_border_exec;
2950         ot->modal = WM_border_select_modal;
2951         ot->cancel = WM_border_select_cancel;
2952
2953         ot->poll = ED_operator_view3d_active;
2954
2955         /* flags */
2956         ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
2957
2958         /* rna */
2959         WM_operator_properties_border(ot);
2960
2961         RNA_def_boolean(ot->srna, "camera_only", 0, "Camera Only", "Set render border for camera view and final render only");
2962 }
2963
2964 /* ********************* Clear render border operator ****************** */
2965
2966 static int clear_render_border_exec(bContext *C, wmOperator *UNUSED(op))
2967 {
2968         View3D *v3d = CTX_wm_view3d(C);
2969         RegionView3D *rv3d = ED_view3d_context_rv3d(C);
2970
2971         Scene *scene = CTX_data_scene(C);
2972         rctf *border = NULL;
2973
2974         if (rv3d->persp == RV3D_CAMOB) {
2975                 scene->r.mode &= ~R_BORDER;
2976                 border = &scene->r.border;
2977
2978                 WM_event_add_notifier(C, NC_SCENE | ND_RENDER_OPTIONS, NULL);
2979         }
2980         else {
2981                 v3d->flag2 &= ~V3D_RENDER_BORDER;
2982                 border = &v3d->render_border;
2983
2984                 WM_event_add_notifier(C, NC_SPACE | ND_SPACE_VIEW3D, NULL);
2985         }
2986
2987         border->xmin = 0.0f;
2988         border->ymin = 0.0f;
2989         border->xmax = 1.0f;
2990         border->ymax = 1.0f;
2991
2992         return OPERATOR_FINISHED;
2993
2994 }
2995
2996 void VIEW3D_OT_clear_render_border(wmOperatorType *ot)
2997 {
2998         /* identifiers */
2999         ot->name = "Clear Render Border";
3000         ot->description = "Clear the boundaries of the border render and disable border render";
3001         ot->idname = "VIEW3D_OT_clear_render_border";
3002
3003         /* api callbacks */
3004         ot->exec = clear_render_border_exec;
3005         ot->poll = ED_operator_view3d_active;
3006
3007         /* flags */
3008         ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
3009 }
3010
3011 /* ********************* Border Zoom operator ****************** */
3012
3013 static int view3d_zoom_border_exec(bContext *C, wmOperator *op)
3014 {
3015         ARegion *ar = CTX_wm_region(C);
3016         View3D *v3d = CTX_wm_view3d(C);
3017         RegionView3D *rv3d = CTX_wm_region_view3d(C);
3018         Scene *scene = CTX_data_scene(C);
3019         int gesture_mode;
3020
3021         /* Zooms in on a border drawn by the user */
3022         rcti rect;
3023         float dvec[3], vb[2], xscale, yscale;
3024         float dist_range_min;
3025
3026         /* SMOOTHVIEW */
3027         float new_dist;
3028         float new_ofs[3];
3029
3030         /* ZBuffer depth vars */
3031         bglMats mats;
3032         float depth_close = FLT_MAX;
3033         double cent[2],  p[3];
3034
3035         /* note; otherwise opengl won't work */
3036         view3d_operator_needs_opengl(C);
3037
3038         /* get border select values using rna */
3039         WM_operator_properties_border_to_rcti(op, &rect);
3040
3041         /* check if zooming in/out view */
3042         gesture_mode = RNA_int_get(op->ptr, "gesture_mode");
3043
3044         /* Get Z Depths, needed for perspective, nice for ortho */
3045         bgl_get_mats(&mats);
3046         draw_depth(scene, ar, v3d, NULL);
3047
3048         {
3049                 /* avoid allocating the whole depth buffer */
3050                 ViewDepths depth_temp = {0};
3051
3052                 /* avoid view3d_update_depths() for speed. */
3053                 view3d_update_depths_rect(ar, &depth_temp, &rect);
3054
3055                 /* find the closest Z pixel */
3056                 depth_close = view3d_depth_near(&depth_temp);
3057
3058                 MEM_freeN(depth_temp.depths);
3059         }
3060
3061         cent[0] = (((double)rect.xmin) + ((double)rect.xmax)) / 2;
3062         cent[1] = (((double)rect.ymin) + ((double)rect.ymax)) / 2;
3063
3064         if (rv3d->is_persp) {
3065                 double p_corner[3];
3066
3067                 /* no depths to use, we cant do anything! */
3068                 if (depth_close == FLT_MAX) {