source/blender/editors/space_view3d/view3d_view.c

   1 /**
   2  * $Id:
   3  *
   4  * ***** BEGIN GPL LICENSE BLOCK *****
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  *
  20  * The Original Code is Copyright (C) 2008 Blender Foundation.
  21  * All rights reserved.
  22  *
  23  *
  24  * Contributor(s): Blender Foundation
  25  *
  26  * ***** END GPL LICENSE BLOCK *****
  27  */
  28
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <math.h>
  32 #include <float.h>
  33
  34 #include "DNA_action_types.h"
  35 #include "DNA_armature_types.h"
  36 #include "DNA_camera_types.h"
  37 #include "DNA_lamp_types.h"
  38 #include "DNA_object_types.h"
  39 #include "DNA_space_types.h"
  40 #include "DNA_scene_types.h"
  41 #include "DNA_screen_types.h"
  42 #include "DNA_userdef_types.h"
  43 #include "DNA_view3d_types.h"
  44 #include "DNA_world_types.h"
  45
  46 #include "MEM_guardedalloc.h"
  47
  48 #include "BLI_arithb.h"
  49 #include "BLI_blenlib.h"
  50 #include "BLI_editVert.h"
  51 #include "BLI_rand.h"
  52
  53 #include "BKE_anim.h"
  54 #include "BKE_action.h"
  55 #include "BKE_context.h"
  56 #include "BKE_object.h"
  57 #include "BKE_global.h"
  58 #include "BKE_main.h"
  59 #include "BKE_scene.h"
  60 #include "BKE_screen.h"
  61 #include "BKE_utildefines.h"
  62
  63 #include "RE_pipeline.h"        // make_stars
  64
  65 #include "BIF_gl.h"
  66
  67 #include "WM_api.h"
  68 #include "WM_types.h"
  69
  70 #include "ED_mesh.h"
  71 #include "ED_screen.h"
  72 #include "ED_view3d.h"
  73
  74 #include "UI_interface.h"
  75 #include "UI_resources.h"
  76 #include "UI_view2d.h"
  77
  78 #include "PIL_time.h" /* smoothview */
  79
  80 #include "view3d_intern.h"      // own include
  81
  82 #define BL_NEAR_CLIP 0.001
  83
  84
  85
  86 /* use this call when executing an operator,
  87    event system doesn't set for each event the
  88    opengl drawing context */
  89 void view3d_operator_needs_opengl(const bContext *C)
  90 {
  91         ARegion *ar= CTX_wm_region(C);
  92
  93         /* for debugging purpose, context should always be OK */
  94         if(ar->regiontype!=RGN_TYPE_WINDOW)
  95                 printf("view3d_operator_needs_opengl error, wrong region\n");
  96         else {
  97                 RegionView3D *rv3d= ar->regiondata;
  98
  99                 wmSubWindowSet(CTX_wm_window(C), ar->swinid);
 100                 glMatrixMode(GL_PROJECTION);
 101                 wmLoadMatrix(rv3d->winmat);
 102                 glMatrixMode(GL_MODELVIEW);
 103                 wmLoadMatrix(rv3d->viewmat);
 104         }
 105 }
 106
 107 float *give_cursor(Scene *scene, View3D *v3d)
 108 {
 109         if(v3d && v3d->localview) return v3d->cursor;
 110         else return scene->cursor;
 111 }
 112
 113
 114 /* Gets the lens and clipping values from a camera of lamp type object */
 115 static void object_lens_clip_settings(Object *ob, float *lens, float *clipsta, float *clipend)
 116 {
 117         if (!ob) return;
 118
 119         if(ob->type==OB_LAMP ) {
 120                 Lamp *la = ob->data;
 121                 if (lens) {
 122                         float x1, fac;
 123                         fac= cos( M_PI*la->spotsize/360.0);
 124                         x1= saacos(fac);
 125                         *lens= 16.0*fac/sin(x1);
 126                 }
 127                 if (clipsta)    *clipsta= la->clipsta;
 128                 if (clipend)    *clipend= la->clipend;
 129         }
 130         else if(ob->type==OB_CAMERA) {
 131                 Camera *cam= ob->data;
 132                 if (lens)               *lens= cam->lens;
 133                 if (clipsta)    *clipsta= cam->clipsta;
 134                 if (clipend)    *clipend= cam->clipend;
 135         }
 136         else {
 137                 if (lens)               *lens= 35.0f;
 138         }
 139 }
 140
 141
 142 /* Gets the view trasnformation from a camera
 143 * currently dosnt take camzoom into account
 144 *
 145 * The dist is not modified for this function, if NULL its assimed zero
 146 * */
 147 static void view_settings_from_ob(Object *ob, float *ofs, float *quat, float *dist, float *lens)
 148 {
 149         float bmat[4][4];
 150         float imat[4][4];
 151         float tmat[3][3];
 152
 153         if (!ob) return;
 154
 155         /* Offset */
 156         if (ofs) {
 157                 VECCOPY(ofs, ob->obmat[3]);
 158                 VecMulf(ofs, -1.0f); /*flip the vector*/
 159         }
 160
 161         /* Quat */
 162         if (quat) {
 163                 Mat4CpyMat4(bmat, ob->obmat);
 164                 Mat4Ortho(bmat);
 165                 Mat4Invert(imat, bmat);
 166                 Mat3CpyMat4(tmat, imat);
 167                 Mat3ToQuat(tmat, quat);
 168         }
 169
 170         if (dist) {
 171                 float vec[3];
 172                 Mat3CpyMat4(tmat, ob->obmat);
 173
 174                 vec[0]= vec[1] = 0.0;
 175                 vec[2]= -(*dist);
 176                 Mat3MulVecfl(tmat, vec);
 177                 VecSubf(ofs, ofs, vec);
 178         }
 179
 180         /* Lens */
 181         if (lens)
 182                 object_lens_clip_settings(ob, lens, NULL, NULL);
 183 }
 184
 185
 186 /* ****************** smooth view operator ****************** */
 187
 188 struct SmoothViewStore {
 189         float orig_dist, new_dist;
 190         float orig_lens, new_lens;
 191         float orig_quat[4], new_quat[4];
 192         float orig_ofs[3], new_ofs[3];
 193
 194         int to_camera, orig_view;
 195
 196         double time_allowed;
 197 };
 198
 199 /* will start timer if appropriate */
 200 /* the arguments are the desired situation */
 201 void smooth_view(bContext *C, Object *oldcamera, Object *camera, float *ofs, float *quat, float *dist, float *lens)
 202 {
 203         View3D *v3d = CTX_wm_view3d(C);
 204         RegionView3D *rv3d= CTX_wm_region_view3d(C);
 205         struct SmoothViewStore sms;
 206
 207         /* initialize sms */
 208         VECCOPY(sms.new_ofs, rv3d->ofs);
 209         QUATCOPY(sms.new_quat, rv3d->viewquat);
 210         sms.new_dist= rv3d->dist;
 211         sms.new_lens= v3d->lens;
 212         sms.to_camera= 0;
 213
 214         /* store the options we want to end with */
 215         if(ofs) VECCOPY(sms.new_ofs, ofs);
 216         if(quat) QUATCOPY(sms.new_quat, quat);
 217         if(dist) sms.new_dist= *dist;
 218         if(lens) sms.new_lens= *lens;
 219
 220         if (camera) {
 221                 view_settings_from_ob(camera, sms.new_ofs, sms.new_quat, &sms.new_dist, &sms.new_lens);
 222                 sms.to_camera= 1; /* restore view3d values in end */
 223         }
 224
 225         if (C && U.smooth_viewtx) {
 226                 int changed = 0; /* zero means no difference */
 227
 228                 if (sms.new_dist != rv3d->dist)
 229                         changed = 1;
 230                 if (sms.new_lens != v3d->lens)
 231                         changed = 1;
 232
 233                 if ((sms.new_ofs[0]!=rv3d->ofs[0]) ||
 234                         (sms.new_ofs[1]!=rv3d->ofs[1]) ||
 235                         (sms.new_ofs[2]!=rv3d->ofs[2]) )
 236                         changed = 1;
 237
 238                 if ((sms.new_quat[0]!=rv3d->viewquat[0]) ||
 239                         (sms.new_quat[1]!=rv3d->viewquat[1]) ||
 240                         (sms.new_quat[2]!=rv3d->viewquat[2]) ||
 241                         (sms.new_quat[3]!=rv3d->viewquat[3]) )
 242                         changed = 1;
 243
 244                 /* The new view is different from the old one
 245                         * so animate the view */
 246                 if (changed) {
 247
 248                         sms.time_allowed= (double)U.smooth_viewtx / 1000.0;
 249
 250                         /* if this is view rotation only
 251                                 * we can decrease the time allowed by
 252                                 * the angle between quats
 253                                 * this means small rotations wont lag */
 254                         if (quat && !ofs && !dist) {
 255                                 float vec1[3], vec2[3];
 256
 257                                 VECCOPY(vec1, sms.new_quat);
 258                                 VECCOPY(vec2, sms.orig_quat);
 259                                 Normalize(vec1);
 260                                 Normalize(vec2);
 261                                 /* scale the time allowed by the rotation */
 262                                 sms.time_allowed *= NormalizedVecAngle2(vec1, vec2)/(M_PI/2);
 263                         }
 264
 265                         /* original values */
 266                         if (oldcamera) {
 267                                 sms.orig_dist= rv3d->dist; // below function does weird stuff with it...
 268                                 view_settings_from_ob(oldcamera, sms.orig_ofs, sms.orig_quat, &sms.orig_dist, &sms.orig_lens);
 269                         }
 270                         else {
 271                                 VECCOPY(sms.orig_ofs, rv3d->ofs);
 272                                 QUATCOPY(sms.orig_quat, rv3d->viewquat);
 273                                 sms.orig_dist= rv3d->dist;
 274                                 sms.orig_lens= v3d->lens;
 275                         }
 276                         /* grid draw as floor */
 277                         sms.orig_view= rv3d->view;
 278                         rv3d->view= 0;
 279
 280                         /* ensure it shows correct */
 281                         if(sms.to_camera) rv3d->persp= V3D_PERSP;
 282
 283                         /* keep track of running timer! */
 284                         if(rv3d->sms==NULL)
 285                                 rv3d->sms= MEM_mallocN(sizeof(struct SmoothViewStore), "smoothview v3d");
 286                         *rv3d->sms= sms;
 287                         if(rv3d->smooth_timer)
 288                                 WM_event_remove_window_timer(CTX_wm_window(C), rv3d->smooth_timer);
 289                         /* TIMER1 is hardcoded in keymap */
 290                         rv3d->smooth_timer= WM_event_add_window_timer(CTX_wm_window(C), TIMER1, 1.0/30.0);      /* max 30 frs/sec */
 291
 292                         return;
 293                 }
 294         }
 295
 296         /* if we get here nothing happens */
 297         if(sms.to_camera==0) {
 298                 VECCOPY(rv3d->ofs, sms.new_ofs);
 299                 QUATCOPY(rv3d->viewquat, sms.new_quat);
 300                 rv3d->dist = sms.new_dist;
 301                 v3d->lens = sms.new_lens;
 302         }
 303         ED_region_tag_redraw(CTX_wm_region(C));
 304 }
 305
 306 /* only meant for timer usage */
 307 static int view3d_smoothview_invoke(bContext *C, wmOperator *op, wmEvent *event)
 308 {
 309         View3D *v3d = CTX_wm_view3d(C);
 310         RegionView3D *rv3d= CTX_wm_region_view3d(C);
 311         struct SmoothViewStore *sms= rv3d->sms;
 312         double step, step_inv;
 313
 314         /* escape if not our timer */
 315         if(rv3d->smooth_timer==NULL || rv3d->smooth_timer!=event->customdata)
 316                 return OPERATOR_PASS_THROUGH;
 317
 318         step =  (rv3d->smooth_timer->duration)/sms->time_allowed;
 319
 320         /* end timer */
 321         if(step >= 1.0f) {
 322
 323                 /* if we went to camera, store the original */
 324                 if(sms->to_camera) {
 325                         rv3d->persp= V3D_CAMOB;
 326                         VECCOPY(rv3d->ofs, sms->orig_ofs);
 327                         QUATCOPY(rv3d->viewquat, sms->orig_quat);
 328                         rv3d->dist = sms->orig_dist;
 329                         v3d->lens = sms->orig_lens;
 330                 }
 331                 else {
 332                         VECCOPY(rv3d->ofs, sms->new_ofs);
 333                         QUATCOPY(rv3d->viewquat, sms->new_quat);
 334                         rv3d->dist = sms->new_dist;
 335                         v3d->lens = sms->new_lens;
 336                 }
 337                 rv3d->view= sms->orig_view;
 338
 339                 MEM_freeN(rv3d->sms);
 340                 rv3d->sms= NULL;
 341
 342                 WM_event_remove_window_timer(CTX_wm_window(C), rv3d->smooth_timer);
 343                 rv3d->smooth_timer= NULL;
 344         }
 345         else {
 346                 int i;
 347
 348                 /* ease in/out */
 349                 if (step < 0.5) step = (float)pow(step*2, 2)/2;
 350                 else                    step = (float)1-(pow(2*(1-step),2)/2);
 351
 352                 step_inv = 1.0-step;
 353
 354                 for (i=0; i<3; i++)
 355                         rv3d->ofs[i] = sms->new_ofs[i]*step + sms->orig_ofs[i]*step_inv;
 356
 357                 QuatInterpol(rv3d->viewquat, sms->orig_quat, sms->new_quat, step);
 358
 359                 rv3d->dist = sms->new_dist*step + sms->orig_dist*step_inv;
 360                 v3d->lens = sms->new_lens*step + sms->orig_lens*step_inv;
 361         }
 362
 363         ED_region_tag_redraw(CTX_wm_region(C));
 364
 365         return OPERATOR_FINISHED;
 366 }
 367
 368 void VIEW3D_OT_smoothview(wmOperatorType *ot)
 369 {
 370
 371         /* identifiers */
 372         ot->name= "Smooth View";
 373         ot->idname= "VIEW3D_OT_smoothview";
 374
 375         /* api callbacks */
 376         ot->invoke= view3d_smoothview_invoke;
 377
 378         ot->poll= ED_operator_view3d_active;
 379 }
 380
 381 static int view3d_setcameratoview_exec(bContext *C, wmOperator *op)
 382 {
 383         View3D *v3d = CTX_wm_view3d(C);
 384         RegionView3D *rv3d= CTX_wm_region_view3d(C);
 385         Object *ob;
 386         float dvec[3];
 387
 388         ob= v3d->camera;
 389         dvec[0]= rv3d->dist*rv3d->viewinv[2][0];
 390         dvec[1]= rv3d->dist*rv3d->viewinv[2][1];
 391         dvec[2]= rv3d->dist*rv3d->viewinv[2][2];
 392
 393         VECCOPY(ob->loc, dvec);
 394         VecSubf(ob->loc, ob->loc, v3d->ofs);
 395         rv3d->viewquat[0]= -rv3d->viewquat[0];
 396
 397         QuatToEul(rv3d->viewquat, ob->rot);
 398         rv3d->viewquat[0]= -rv3d->viewquat[0];
 399
 400         ob->recalc= OB_RECALC_OB;
 401
 402         WM_event_add_notifier(C, NC_OBJECT|ND_TRANSFORM, CTX_data_scene(C));
 403
 404         return OPERATOR_FINISHED;
 405
 406 }
 407
 408 void VIEW3D_OT_setcameratoview(wmOperatorType *ot)
 409 {
 410
 411         /* identifiers */
 412         ot->name= "Align Camera To View";
 413         ot->idname= "VIEW3D_OT_set_camera_to_view";
 414
 415         /* api callbacks */
 416         ot->exec= view3d_setcameratoview_exec;
 417         ot->poll= ED_operator_view3d_active;
 418 }
 419
 420 /* ********************************** */
 421
 422 /* create intersection coordinates in view Z direction at mouse coordinates */
 423 void viewline(ARegion *ar, View3D *v3d, short mval[2], float ray_start[3], float ray_end[3])
 424 {
 425         RegionView3D *rv3d= ar->regiondata;
 426         float vec[4];
 427
 428         if(rv3d->persp != V3D_ORTHO){
 429                 vec[0]= 2.0f * mval[0] / ar->winx - 1;
 430                 vec[1]= 2.0f * mval[1] / ar->winy - 1;
 431                 vec[2]= -1.0f;
 432                 vec[3]= 1.0f;
 433
 434                 Mat4MulVec4fl(rv3d->persinv, vec);
 435                 VecMulf(vec, 1.0f / vec[3]);
 436
 437                 VECCOPY(ray_start, rv3d->viewinv[3]);
 438                 VECSUB(vec, vec, ray_start);
 439                 Normalize(vec);
 440
 441                 VECADDFAC(ray_start, rv3d->viewinv[3], vec, v3d->near);
 442                 VECADDFAC(ray_end, rv3d->viewinv[3], vec, v3d->far);
 443         }
 444         else {
 445                 vec[0] = 2.0f * mval[0] / ar->winx - 1;
 446                 vec[1] = 2.0f * mval[1] / ar->winy - 1;
 447                 vec[2] = 0.0f;
 448                 vec[3] = 1.0f;
 449
 450                 Mat4MulVec4fl(rv3d->persinv, vec);
 451
 452                 VECADDFAC(ray_start, vec, rv3d->viewinv[2],  1000.0f);
 453                 VECADDFAC(ray_end, vec, rv3d->viewinv[2], -1000.0f);
 454         }
 455 }
 456
 457 /* create intersection ray in view Z direction at mouse coordinates */
 458 void viewray(ARegion *ar, View3D *v3d, short mval[2], float ray_start[3], float ray_normal[3])
 459 {
 460         float ray_end[3];
 461
 462         viewline(ar, v3d, mval, ray_start, ray_end);
 463         VecSubf(ray_normal, ray_end, ray_start);
 464         Normalize(ray_normal);
 465 }
 466
 467
 468 void initgrabz(RegionView3D *rv3d, float x, float y, float z)
 469 {
 470         if(rv3d==NULL) return;
 471         rv3d->zfac= rv3d->persmat[0][3]*x+ rv3d->persmat[1][3]*y+ rv3d->persmat[2][3]*z+ rv3d->persmat[3][3];
 472
 473         /* if x,y,z is exactly the viewport offset, zfac is 0 and we don't want that
 474                 * (accounting for near zero values)
 475                 * */
 476         if (rv3d->zfac < 1.e-6f && rv3d->zfac > -1.e-6f) rv3d->zfac = 1.0f;
 477
 478         /* Negative zfac means x, y, z was behind the camera (in perspective).
 479                 * This gives flipped directions, so revert back to ok default case.
 480         */
 481         if (rv3d->zfac < 0.0f) rv3d->zfac = 1.0f;
 482 }
 483
 484 void window_to_3d(ARegion *ar, float *vec, short mx, short my)
 485 {
 486         RegionView3D *rv3d= ar->regiondata;
 487
 488         /* always call initgrabz */
 489         float dx, dy;
 490
 491         dx= 2.0f*mx*rv3d->zfac/ar->winx;
 492         dy= 2.0f*my*rv3d->zfac/ar->winy;
 493
 494         vec[0]= (rv3d->persinv[0][0]*dx + rv3d->persinv[1][0]*dy);
 495         vec[1]= (rv3d->persinv[0][1]*dx + rv3d->persinv[1][1]*dy);
 496         vec[2]= (rv3d->persinv[0][2]*dx + rv3d->persinv[1][2]*dy);
 497 }
 498
 499 float read_cached_depth(ViewContext *vc, int x, int y)
 500 {
 501         ViewDepths *vd = vc->rv3d->depths;
 502
 503         y -= vc->ar->winrct.ymin;
 504
 505         if(vd && vd->depths && x > 0 && y > 0 && x < vd->w && y < vd->h)
 506                 return vd->depths[y * vd->w + x];
 507         else
 508                 return 1;
 509 }
 510
 511 void request_depth_update(ViewContext *vc)
 512 {
 513         if(vc->rv3d->depths)
 514                 vc->rv3d->depths->damaged= 1;
 515 }
 516
 517 void view3d_get_object_project_mat(RegionView3D *rv3d, Object *ob, float pmat[4][4], float vmat[4][4])
 518 {
 519         Mat4MulMat4(vmat, ob->obmat, rv3d->viewmat);
 520         Mat4MulMat4(pmat, vmat, rv3d->winmat);
 521         Mat4CpyMat4(vmat, ob->obmat);
 522 }
 523
 524 /* projectmat brings it to window coords, wmat to rotated world space */
 525 void view3d_project_short_clip(ARegion *ar, float *vec, short *adr, float projmat[4][4], float wmat[4][4])
 526 {
 527         RegionView3D *rv3d= ar->regiondata;
 528         float fx, fy, vec4[4];
 529
 530         adr[0]= IS_CLIPPED;
 531
 532         /* clipplanes in eye space */
 533         if(rv3d->rflag & RV3D_CLIPPING) {
 534                 VECCOPY(vec4, vec);
 535                 Mat4MulVecfl(wmat, vec4);
 536                 if(view3d_test_clipping(rv3d, vec4))
 537                         return;
 538         }
 539
 540         VECCOPY(vec4, vec);
 541         vec4[3]= 1.0;
 542
 543         Mat4MulVec4fl(projmat, vec4);
 544
 545         /* clipplanes in window space */
 546         if( vec4[3]>BL_NEAR_CLIP ) {    /* 0.001 is the NEAR clipping cutoff for picking */
 547                 fx= (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 548
 549                 if( fx>0 && fx<ar->winx) {
 550
 551                         fy= (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 552
 553                         if(fy>0.0 && fy< (float)ar->winy) {
 554                                 adr[0]= (short)floor(fx);
 555                                 adr[1]= (short)floor(fy);
 556                         }
 557                 }
 558         }
 559 }
 560
 561 void view3d_project_short_noclip(ARegion *ar, float *vec, short *adr, float mat[4][4])
 562 {
 563         float fx, fy, vec4[4];
 564
 565         adr[0]= IS_CLIPPED;
 566
 567         VECCOPY(vec4, vec);
 568         vec4[3]= 1.0;
 569
 570         Mat4MulVec4fl(mat, vec4);
 571
 572         if( vec4[3]>BL_NEAR_CLIP ) {    /* 0.001 is the NEAR clipping cutoff for picking */
 573                 fx= (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 574
 575                 if( fx>-32700 && fx<32700) {
 576
 577                         fy= (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 578
 579                         if(fy>-32700.0 && fy<32700.0) {
 580                                 adr[0]= (short)floor(fx);
 581                                 adr[1]= (short)floor(fy);
 582                         }
 583                 }
 584         }
 585 }
 586
 587 void view3d_project_float(ARegion *ar, float *vec, float *adr, float mat[4][4])
 588 {
 589         float vec4[4];
 590
 591         adr[0]= IS_CLIPPED;
 592         VECCOPY(vec4, vec);
 593         vec4[3]= 1.0;
 594
 595         Mat4MulVec4fl(mat, vec4);
 596
 597         if( vec4[3]>FLT_EPSILON ) {
 598                 adr[0] = (float)(ar->winx/2.0f)+(ar->winx/2.0f)*vec4[0]/vec4[3];
 599                 adr[1] = (float)(ar->winy/2.0f)+(ar->winy/2.0f)*vec4[1]/vec4[3];
 600         } else {
 601                 adr[0] = adr[1] = 0.0f;
 602         }
 603 }
 604
 605 int boundbox_clip(RegionView3D *rv3d, float obmat[][4], BoundBox *bb)
 606 {
 607         /* return 1: draw */
 608
 609         float mat[4][4];
 610         float vec[4], min, max;
 611         int a, flag= -1, fl;
 612
 613         if(bb==NULL) return 1;
 614         if(bb->flag & OB_BB_DISABLED) return 1;
 615
 616         Mat4MulMat4(mat, obmat, rv3d->persmat);
 617
 618         for(a=0; a<8; a++) {
 619                 VECCOPY(vec, bb->vec[a]);
 620                 vec[3]= 1.0;
 621                 Mat4MulVec4fl(mat, vec);
 622                 max= vec[3];
 623                 min= -vec[3];
 624
 625                 fl= 0;
 626                 if(vec[0] < min) fl+= 1;
 627                 if(vec[0] > max) fl+= 2;
 628                 if(vec[1] < min) fl+= 4;
 629                 if(vec[1] > max) fl+= 8;
 630                 if(vec[2] < min) fl+= 16;
 631                 if(vec[2] > max) fl+= 32;
 632
 633                 flag &= fl;
 634                 if(flag==0) return 1;
 635         }
 636
 637         return 0;
 638 }
 639
 640 void project_short(ARegion *ar, float *vec, short *adr) /* clips */
 641 {
 642         RegionView3D *rv3d= ar->regiondata;
 643         float fx, fy, vec4[4];
 644
 645         adr[0]= IS_CLIPPED;
 646
 647         if(rv3d->rflag & RV3D_CLIPPING) {
 648                 if(view3d_test_clipping(rv3d, vec))
 649                         return;
 650         }
 651
 652         VECCOPY(vec4, vec);
 653         vec4[3]= 1.0;
 654         Mat4MulVec4fl(rv3d->persmat, vec4);
 655
 656         if( vec4[3]>BL_NEAR_CLIP ) {    /* 0.001 is the NEAR clipping cutoff for picking */
 657                 fx= (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 658
 659                 if( fx>0 && fx<ar->winx) {
 660
 661                         fy= (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 662
 663                         if(fy>0.0 && fy< (float)ar->winy) {
 664                                 adr[0]= (short)floor(fx);
 665                                 adr[1]= (short)floor(fy);
 666                         }
 667                 }
 668         }
 669 }
 670
 671 void project_int(ARegion *ar, float *vec, int *adr)
 672 {
 673         RegionView3D *rv3d= ar->regiondata;
 674         float fx, fy, vec4[4];
 675
 676         adr[0]= (int)2140000000.0f;
 677         VECCOPY(vec4, vec);
 678         vec4[3]= 1.0;
 679
 680         Mat4MulVec4fl(rv3d->persmat, vec4);
 681
 682         if( vec4[3]>BL_NEAR_CLIP ) {    /* 0.001 is the NEAR clipping cutoff for picking */
 683                 fx= (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 684
 685                 if( fx>-2140000000.0f && fx<2140000000.0f) {
 686                         fy= (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 687
 688                         if(fy>-2140000000.0f && fy<2140000000.0f) {
 689                                 adr[0]= (int)floor(fx);
 690                                 adr[1]= (int)floor(fy);
 691                         }
 692                 }
 693         }
 694 }
 695
 696 void project_int_noclip(ARegion *ar, float *vec, int *adr)
 697 {
 698         RegionView3D *rv3d= ar->regiondata;
 699         float fx, fy, vec4[4];
 700
 701         VECCOPY(vec4, vec);
 702         vec4[3]= 1.0;
 703
 704         Mat4MulVec4fl(rv3d->persmat, vec4);
 705
 706         if( fabs(vec4[3]) > BL_NEAR_CLIP ) {
 707                 fx = (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 708                 fy = (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 709
 710                 adr[0] = (int)floor(fx);
 711                 adr[1] = (int)floor(fy);
 712         }
 713         else
 714         {
 715                 adr[0] = ar->winx / 2;
 716                 adr[1] = ar->winy / 2;
 717         }
 718 }
 719
 720 void project_short_noclip(ARegion *ar, float *vec, short *adr)
 721 {
 722         RegionView3D *rv3d= ar->regiondata;
 723         float fx, fy, vec4[4];
 724
 725         adr[0]= IS_CLIPPED;
 726         VECCOPY(vec4, vec);
 727         vec4[3]= 1.0;
 728
 729         Mat4MulVec4fl(rv3d->persmat, vec4);
 730
 731         if( vec4[3]>BL_NEAR_CLIP ) {    /* 0.001 is the NEAR clipping cutoff for picking */
 732                 fx= (ar->winx/2)*(1 + vec4[0]/vec4[3]);
 733
 734                 if( fx>-32700 && fx<32700) {
 735
 736                         fy= (ar->winy/2)*(1 + vec4[1]/vec4[3]);
 737
 738                         if(fy>-32700.0 && fy<32700.0) {
 739                                 adr[0]= (short)floor(fx);
 740                                 adr[1]= (short)floor(fy);
 741                         }
 742                 }
 743         }
 744 }
 745
 746 void project_float(ARegion *ar, float *vec, float *adr)
 747 {
 748         RegionView3D *rv3d= ar->regiondata;
 749         float vec4[4];
 750
 751         adr[0]= IS_CLIPPED;
 752         VECCOPY(vec4, vec);
 753         vec4[3]= 1.0;
 754
 755         Mat4MulVec4fl(rv3d->persmat, vec4);
 756
 757         if( vec4[3]>BL_NEAR_CLIP ) {
 758                 adr[0] = (float)(ar->winx/2.0)+(ar->winx/2.0)*vec4[0]/vec4[3];
 759                 adr[1] = (float)(ar->winy/2.0)+(ar->winy/2.0)*vec4[1]/vec4[3];
 760         }
 761 }
 762
 763 void project_float_noclip(ARegion *ar, float *vec, float *adr)
 764 {
 765         RegionView3D *rv3d= ar->regiondata;
 766         float vec4[4];
 767
 768         VECCOPY(vec4, vec);
 769         vec4[3]= 1.0;
 770
 771         Mat4MulVec4fl(rv3d->persmat, vec4);
 772
 773         if( fabs(vec4[3]) > BL_NEAR_CLIP ) {
 774                 adr[0] = (float)(ar->winx/2.0)+(ar->winx/2.0)*vec4[0]/vec4[3];
 775                 adr[1] = (float)(ar->winy/2.0)+(ar->winy/2.0)*vec4[1]/vec4[3];
 776         }
 777         else
 778         {
 779                 adr[0] = ar->winx / 2.0f;
 780                 adr[1] = ar->winy / 2.0f;
 781         }
 782 }
 783
 784
 785
 786 /* also exposed in previewrender.c */
 787 int get_view3d_viewplane(View3D *v3d, RegionView3D *rv3d, int winxi, int winyi, rctf *viewplane, float *clipsta, float *clipend, float *pixsize)
 788 {
 789         Camera *cam=NULL;
 790         float lens, fac, x1, y1, x2, y2;
 791         float winx= (float)winxi, winy= (float)winyi;
 792         int orth= 0;
 793
 794         lens= v3d->lens;
 795
 796         *clipsta= v3d->near;
 797         *clipend= v3d->far;
 798
 799         if(rv3d->persp==V3D_CAMOB) {
 800                 if(v3d->camera) {
 801                         if(v3d->camera->type==OB_LAMP ) {
 802                                 Lamp *la;
 803
 804                                 la= v3d->camera->data;
 805                                 fac= cos( M_PI*la->spotsize/360.0);
 806
 807                                 x1= saacos(fac);
 808                                 lens= 16.0*fac/sin(x1);
 809
 810                                 *clipsta= la->clipsta;
 811                                 *clipend= la->clipend;
 812                         }
 813                         else if(v3d->camera->type==OB_CAMERA) {
 814                                 cam= v3d->camera->data;
 815                                 lens= cam->lens;
 816                                 *clipsta= cam->clipsta;
 817                                 *clipend= cam->clipend;
 818                         }
 819                 }
 820         }
 821
 822         if(rv3d->persp==V3D_ORTHO) {
 823                 if(winx>winy) x1= -rv3d->dist;
 824                 else x1= -winx*rv3d->dist/winy;
 825                 x2= -x1;
 826
 827                 if(winx>winy) y1= -winy*rv3d->dist/winx;
 828                 else y1= -rv3d->dist;
 829                 y2= -y1;
 830
 831                 *clipend *= 0.5;        // otherwise too extreme low zbuffer quality
 832                 *clipsta= - *clipend;
 833                 orth= 1;
 834         }
 835         else {
 836                 /* fac for zoom, also used for camdx */
 837                 if(rv3d->persp==V3D_CAMOB) {
 838                         fac= (1.41421+( (float)rv3d->camzoom )/50.0);
 839                         fac*= fac;
 840                 }
 841                 else fac= 2.0;
 842
 843                 /* viewplane size depends... */
 844                 if(cam && cam->type==CAM_ORTHO) {
 845                         /* ortho_scale == 1 means exact 1 to 1 mapping */
 846                         float dfac= 2.0*cam->ortho_scale/fac;
 847
 848                         if(winx>winy) x1= -dfac;
 849                         else x1= -winx*dfac/winy;
 850                         x2= -x1;
 851
 852                         if(winx>winy) y1= -winy*dfac/winx;
 853                         else y1= -dfac;
 854                         y2= -y1;
 855                         orth= 1;
 856                 }
 857                 else {
 858                         float dfac;
 859
 860                         if(winx>winy) dfac= 64.0/(fac*winx*lens);
 861                         else dfac= 64.0/(fac*winy*lens);
 862
 863                         x1= - *clipsta * winx*dfac;
 864                         x2= -x1;
 865                         y1= - *clipsta * winy*dfac;
 866                         y2= -y1;
 867                         orth= 0;
 868                 }
 869                 /* cam view offset */
 870                 if(cam) {
 871                         float dx= 0.5*fac*rv3d->camdx*(x2-x1);
 872                         float dy= 0.5*fac*rv3d->camdy*(y2-y1);
 873                         x1+= dx;
 874                         x2+= dx;
 875                         y1+= dy;
 876                         y2+= dy;
 877                 }
 878         }
 879
 880         if(pixsize) {
 881                 float viewfac;
 882
 883                 if(orth) {
 884                         viewfac= (winx >= winy)? winx: winy;
 885                         *pixsize= 1.0f/viewfac;
 886                 }
 887                 else {
 888                         viewfac= (((winx >= winy)? winx: winy)*lens)/32.0;
 889                         *pixsize= *clipsta/viewfac;
 890                 }
 891         }
 892
 893         viewplane->xmin= x1;
 894         viewplane->ymin= y1;
 895         viewplane->xmax= x2;
 896         viewplane->ymax= y2;
 897
 898         return orth;
 899 }
 900
 901
 902 /* important to not set windows active in here, can be renderwin for example */
 903 void setwinmatrixview3d(ARegion *ar, View3D *v3d, rctf *rect)           /* rect: for picking */
 904 {
 905         RegionView3D *rv3d= ar->regiondata;
 906         rctf viewplane;
 907         float clipsta, clipend, x1, y1, x2, y2;
 908         int orth;
 909
 910         orth= get_view3d_viewplane(v3d, rv3d, ar->winx, ar->winy, &viewplane, &clipsta, &clipend, NULL);
 911         //      printf("%d %d %f %f %f %f %f %f\n", winx, winy, viewplane.xmin, viewplane.ymin, viewplane.xmax, viewplane.ymax, clipsta, clipend);
 912         x1= viewplane.xmin;
 913         y1= viewplane.ymin;
 914         x2= viewplane.xmax;
 915         y2= viewplane.ymax;
 916
 917         if(rect) {              /* picking */
 918                 rect->xmin/= (float)ar->winx;
 919                 rect->xmin= x1+rect->xmin*(x2-x1);
 920                 rect->ymin/= (float)ar->winy;
 921                 rect->ymin= y1+rect->ymin*(y2-y1);
 922                 rect->xmax/= (float)ar->winx;
 923                 rect->xmax= x1+rect->xmax*(x2-x1);
 924                 rect->ymax/= (float)ar->winy;
 925                 rect->ymax= y1+rect->ymax*(y2-y1);
 926
 927                 if(orth) wmOrtho(rect->xmin, rect->xmax, rect->ymin, rect->ymax, -clipend, clipend);
 928                 else wmFrustum(rect->xmin, rect->xmax, rect->ymin, rect->ymax, clipsta, clipend);
 929
 930         }
 931         else {
 932                 if(orth) wmOrtho(x1, x2, y1, y2, clipsta, clipend);
 933                 else wmFrustum(x1, x2, y1, y2, clipsta, clipend);
 934         }
 935
 936         /* not sure what this was for? (ton) */
 937         glMatrixMode(GL_PROJECTION);
 938         wmGetMatrix(rv3d->winmat);
 939         glMatrixMode(GL_MODELVIEW);
 940 }
 941
 942
 943 static void obmat_to_viewmat(View3D *v3d, RegionView3D *rv3d, Object *ob, short smooth)
 944 {
 945         float bmat[4][4];
 946         float tmat[3][3];
 947
 948         rv3d->view= 0; /* dont show the grid */
 949
 950         Mat4CpyMat4(bmat, ob->obmat);
 951         Mat4Ortho(bmat);
 952         Mat4Invert(rv3d->viewmat, bmat);
 953
 954         /* view quat calculation, needed for add object */
 955         Mat3CpyMat4(tmat, rv3d->viewmat);
 956         if (smooth) {
 957                 float new_quat[4];
 958                 if (rv3d->persp==V3D_CAMOB && v3d->camera) {
 959                         /* were from a camera view */
 960
 961                         float orig_ofs[3];
 962                         float orig_dist= rv3d->dist;
 963                         float orig_lens= v3d->lens;
 964                         VECCOPY(orig_ofs, rv3d->ofs);
 965
 966                         /* Switch from camera view */
 967                         Mat3ToQuat(tmat, new_quat);
 968
 969                         rv3d->persp=V3D_PERSP;
 970                         rv3d->dist= 0.0;
 971
 972                         view_settings_from_ob(v3d->camera, rv3d->ofs, NULL, NULL, &v3d->lens);
 973                         smooth_view(NULL, NULL, NULL, orig_ofs, new_quat, &orig_dist, &orig_lens); // XXX
 974
 975                         rv3d->persp=V3D_CAMOB; /* just to be polite, not needed */
 976
 977                 } else {
 978                         Mat3ToQuat(tmat, new_quat);
 979                         smooth_view(NULL, NULL, NULL, NULL, new_quat, NULL, NULL); // XXX
 980                 }
 981         } else {
 982                 Mat3ToQuat(tmat, rv3d->viewquat);
 983         }
 984 }
 985
 986 /* dont set windows active in in here, is used by renderwin too */
 987 void setviewmatrixview3d(Scene *scene, View3D *v3d, RegionView3D *rv3d)
 988 {
 989         if(rv3d->persp==V3D_CAMOB) {        /* obs/camera */
 990                 if(v3d->camera) {
 991                         where_is_object(scene, v3d->camera);
 992                         obmat_to_viewmat(v3d, rv3d, v3d->camera, 0);
 993                 }
 994                 else {
 995                         QuatToMat4(rv3d->viewquat, rv3d->viewmat);
 996                         rv3d->viewmat[3][2]-= rv3d->dist;
 997                 }
 998         }
 999         else {
1000
1001                 QuatToMat4(rv3d->viewquat, rv3d->viewmat);
1002                 if(rv3d->persp==V3D_PERSP) rv3d->viewmat[3][2]-= rv3d->dist;
1003                 if(v3d->ob_centre) {
1004                         Object *ob= v3d->ob_centre;
1005                         float vec[3];
1006
1007                         VECCOPY(vec, ob->obmat[3]);
1008                         if(ob->type==OB_ARMATURE && v3d->ob_centre_bone[0]) {
1009                                 bPoseChannel *pchan= get_pose_channel(ob->pose, v3d->ob_centre_bone);
1010                                 if(pchan) {
1011                                         VECCOPY(vec, pchan->pose_mat[3]);
1012                                         Mat4MulVecfl(ob->obmat, vec);
1013                                 }
1014                         }
1015                         i_translate(-vec[0], -vec[1], -vec[2], rv3d->viewmat);
1016                 }
1017                 else i_translate(rv3d->ofs[0], rv3d->ofs[1], rv3d->ofs[2], rv3d->viewmat);
1018         }
1019 }
1020
1021 /* IGLuint-> GLuint*/
1022 /* Warning: be sure to account for a negative return value
1023 *   This is an error, "Too many objects in select buffer"
1024 *   and no action should be taken (can crash blender) if this happens
1025 */
1026 short view3d_opengl_select(ViewContext *vc, unsigned int *buffer, unsigned int bufsize, rcti *input)
1027 {
1028         Scene *scene= vc->scene;
1029         View3D *v3d= vc->v3d;
1030         ARegion *ar= vc->ar;
1031         rctf rect;
1032         short code, hits;
1033
1034         G.f |= G_PICKSEL;
1035
1036         /* case not a border select */
1037         if(input->xmin==input->xmax) {
1038                 rect.xmin= input->xmin-12;      // seems to be default value for bones only now
1039                 rect.xmax= input->xmin+12;
1040                 rect.ymin= input->ymin-12;
1041                 rect.ymax= input->xmin+12;
1042         }
1043         else {
1044                 rect.xmin= input->xmin;
1045                 rect.xmax= input->xmax;
1046                 rect.ymin= input->ymin;
1047                 rect.ymax= input->ymax;
1048         }
1049
1050         setwinmatrixview3d(ar, v3d, &rect);
1051         Mat4MulMat4(vc->rv3d->persmat, vc->rv3d->viewmat, vc->rv3d->winmat);
1052
1053         if(v3d->drawtype > OB_WIRE) {
1054                 v3d->zbuf= TRUE;
1055                 glEnable(GL_DEPTH_TEST);
1056         }
1057
1058         if(vc->rv3d->rflag & RV3D_CLIPPING)
1059                 view3d_set_clipping(vc->rv3d);
1060
1061         glSelectBuffer( bufsize, (GLuint *)buffer);
1062         glRenderMode(GL_SELECT);
1063         glInitNames();  /* these two calls whatfor? It doesnt work otherwise */
1064         glPushName(-1);
1065         code= 1;
1066
1067         if(vc->obedit && vc->obedit->type==OB_MBALL) {
1068                 draw_object(scene, ar, v3d, BASACT, DRAW_PICKING|DRAW_CONSTCOLOR);
1069         }
1070         else if ((vc->obedit && vc->obedit->type==OB_ARMATURE)) {
1071                 draw_object(scene, ar, v3d, BASACT, DRAW_PICKING|DRAW_CONSTCOLOR);
1072         }
1073         else {
1074                 Base *base;
1075
1076                 v3d->xray= TRUE;        // otherwise it postpones drawing
1077                 for(base= scene->base.first; base; base= base->next) {
1078                         if(base->lay & v3d->lay) {
1079
1080                                 if (base->object->restrictflag & OB_RESTRICT_SELECT)
1081                                         base->selcol= 0;
1082                                 else {
1083                                         base->selcol= code;
1084                                         glLoadName(code);
1085                                         draw_object(scene, ar, v3d, base, DRAW_PICKING|DRAW_CONSTCOLOR);
1086
1087                                         /* we draw group-duplicators for selection too */
1088                                         if((base->object->transflag & OB_DUPLI) && base->object->dup_group) {
1089                                                 ListBase *lb;
1090                                                 DupliObject *dob;
1091                                                 Base tbase;
1092
1093                                                 tbase.flag= OB_FROMDUPLI;
1094                                                 lb= object_duplilist(scene, base->object);
1095
1096                                                 for(dob= lb->first; dob; dob= dob->next) {
1097                                                         tbase.object= dob->ob;
1098                                                         Mat4CpyMat4(dob->ob->obmat, dob->mat);
1099
1100                                                         draw_object(scene, ar, v3d, &tbase, DRAW_PICKING|DRAW_CONSTCOLOR);
1101
1102                                                         Mat4CpyMat4(dob->ob->obmat, dob->omat);
1103                                                 }
1104                                                 free_object_duplilist(lb);
1105                                         }
1106                                         code++;
1107                                 }
1108                         }
1109                 }
1110                 v3d->xray= FALSE;       // restore
1111         }
1112
1113         glPopName();    /* see above (pushname) */
1114         hits= glRenderMode(GL_RENDER);
1115
1116         G.f &= ~G_PICKSEL;
1117         setwinmatrixview3d(ar, v3d, NULL);
1118         Mat4MulMat4(vc->rv3d->persmat, vc->rv3d->viewmat, vc->rv3d->winmat);
1119
1120         if(v3d->drawtype > OB_WIRE) {
1121                 v3d->zbuf= 0;
1122                 glDisable(GL_DEPTH_TEST);
1123         }
1124 // XXX  persp(PERSP_WIN);
1125
1126         if(vc->rv3d->rflag & RV3D_CLIPPING)
1127                 view3d_clr_clipping();
1128
1129         if(hits<0) printf("Too many objects in select buffer\n");       // XXX make error message
1130
1131         return hits;
1132 }
1133
1134 // XXX solve: localview on region level? no.... layers are area, so all regions in area have to be set
1135 static unsigned int free_localbit(void)
1136 {
1137         unsigned int lay;
1138         ScrArea *sa;
1139         bScreen *sc;
1140
1141         lay= 0;
1142
1143         /* sometimes we loose a localview: when an area is closed */
1144         /* check all areas: which localviews are in use? */
1145         for(sc= G.main->screen.first; sc; sc= sc->id.next) {
1146                 for(sa= sc->areabase.first; sa; sa= sa->next) {
1147                         SpaceLink *sl= sa->spacedata.first;
1148                         for(; sl; sl= sl->next) {
1149                                 if(sl->spacetype==SPACE_VIEW3D) {
1150                                         View3D *v3d= (View3D*) sl;
1151                                         lay |= v3d->lay;
1152                                 }
1153                         }
1154                 }
1155         }
1156
1157         if( (lay & 0x01000000)==0) return 0x01000000;
1158         if( (lay & 0x02000000)==0) return 0x02000000;
1159         if( (lay & 0x04000000)==0) return 0x04000000;
1160         if( (lay & 0x08000000)==0) return 0x08000000;
1161         if( (lay & 0x10000000)==0) return 0x10000000;
1162         if( (lay & 0x20000000)==0) return 0x20000000;
1163         if( (lay & 0x40000000)==0) return 0x40000000;
1164         if( (lay & 0x80000000)==0) return 0x80000000;
1165
1166         return 0;
1167 }
1168
1169
1170 void initlocalview(Scene *scene, ARegion *ar, View3D *v3d)
1171 {
1172         RegionView3D *rv3d= ar->regiondata;
1173         Base *base;
1174         float size = 0.0, min[3], max[3], afm[3];
1175         unsigned int locallay;
1176         int ok=0;
1177
1178         if(v3d->localvd) return;
1179
1180         INIT_MINMAX(min, max);
1181
1182         locallay= free_localbit();
1183
1184         if(locallay==0) {
1185                 printf("Sorry,  no more than 8 localviews\n");  // XXX error
1186                 ok= 0;
1187         }
1188         else {
1189                 if(scene->obedit) {
1190                         minmax_object(scene->obedit, min, max);
1191
1192                         ok= 1;
1193
1194                         BASACT->lay |= locallay;
1195                         scene->obedit->lay= BASACT->lay;
1196                 }
1197                 else {
1198                         base= FIRSTBASE;
1199                         while(base) {
1200                                 if(TESTBASE(v3d, base))  {
1201                                         minmax_object(base->object, min, max);
1202                                         base->lay |= locallay;
1203                                         base->object->lay= base->lay;
1204                                         ok= 1;
1205                                 }
1206                                 base= base->next;
1207                         }
1208                 }
1209
1210                 afm[0]= (max[0]-min[0]);
1211                 afm[1]= (max[1]-min[1]);
1212                 afm[2]= (max[2]-min[2]);
1213                 size= 0.7*MAX3(afm[0], afm[1], afm[2]);
1214                 if(size<=0.01) size= 0.01;
1215         }
1216
1217         if(ok) {
1218                 v3d->localvd= MEM_mallocN(sizeof(View3D), "localview");
1219                 memcpy(v3d->localvd, v3d, sizeof(View3D));
1220
1221                 rv3d->ofs[0]= -(min[0]+max[0])/2.0;
1222                 rv3d->ofs[1]= -(min[1]+max[1])/2.0;
1223                 rv3d->ofs[2]= -(min[2]+max[2])/2.0;
1224
1225                 rv3d->dist= size;
1226
1227                 // correction for window aspect ratio
1228                 if(ar->winy>2 && ar->winx>2) {
1229                         size= (float)ar->winx/(float)ar->winy;
1230                         if(size<1.0) size= 1.0/size;
1231                         rv3d->dist*= size;
1232                 }
1233
1234                 if (rv3d->persp==V3D_CAMOB) rv3d->persp= V3D_PERSP;
1235                 if (v3d->near> 0.1) v3d->near= 0.1;
1236
1237                 v3d->cursor[0]= -rv3d->ofs[0];
1238                 v3d->cursor[1]= -rv3d->ofs[1];
1239                 v3d->cursor[2]= -rv3d->ofs[2];
1240
1241                 v3d->lay= locallay;
1242
1243 // XXX          countall();
1244 // XXX          scrarea_queue_winredraw(curarea);
1245         }
1246         else {
1247                 /* clear flags */
1248                 base= FIRSTBASE;
1249                 while(base) {
1250                         if( base->lay & locallay ) {
1251                                 base->lay-= locallay;
1252                                 if(base->lay==0) base->lay= v3d->layact;
1253                                 if(base->object != scene->obedit) base->flag |= SELECT;
1254                                 base->object->lay= base->lay;
1255                         }
1256                         base= base->next;
1257                 }
1258 // XXX          scrarea_queue_headredraw(curarea);
1259
1260                 v3d->localview= 0;
1261         }
1262 // XXX  BIF_view3d_previewrender_signal(curarea, PR_DBASE|PR_DISPRECT);
1263 }
1264
1265 void restore_localviewdata(View3D *vd)
1266 {
1267         if(vd->localvd==0) return;
1268
1269         VECCOPY(vd->ofs, vd->localvd->ofs);
1270         vd->near= vd->localvd->near;
1271         vd->far= vd->localvd->far;
1272         vd->lay= vd->localvd->lay;
1273         vd->layact= vd->localvd->layact;
1274         vd->drawtype= vd->localvd->drawtype;
1275         vd->camera= vd->localvd->camera;
1276
1277 }
1278
1279 void endlocalview(Scene *scene, ScrArea *sa)
1280 {
1281         View3D *v3d;
1282         struct Base *base;
1283         unsigned int locallay;
1284
1285         if(sa->spacetype!=SPACE_VIEW3D) return;
1286         v3d= sa->spacedata.first;
1287
1288         if(v3d->localvd) {
1289
1290                 locallay= v3d->lay & 0xFF000000;
1291
1292                 restore_localviewdata(v3d);
1293
1294                 MEM_freeN(v3d->localvd);
1295                 v3d->localvd= 0;
1296                 v3d->localview= 0;
1297
1298                 /* for when in other window the layers have changed */
1299                 if(v3d->scenelock) v3d->lay= scene->lay;
1300
1301                 base= FIRSTBASE;
1302                 while(base) {
1303                         if( base->lay & locallay ) {
1304                                 base->lay-= locallay;
1305                                 if(base->lay==0) base->lay= v3d->layact;
1306                                 if(base->object != scene->obedit) {
1307                                         base->flag |= SELECT;
1308                                         base->object->flag |= SELECT;
1309                                 }
1310                                 base->object->lay= base->lay;
1311                         }
1312                         base= base->next;
1313                 }
1314
1315 // XXX          countall();
1316 // XXX          allqueue(REDRAWVIEW3D, 0);      /* because of select */
1317 // XXX          allqueue(REDRAWOOPS, 0);        /* because of select */
1318 // XXX          BIF_view3d_previewrender_signal(curarea, PR_DBASE|PR_DISPRECT);
1319         }
1320 }
1321
1322 void view3d_align_axis_to_vector(View3D *v3d, RegionView3D *rv3d, int axisidx, float vec[3])
1323 {
1324         float alignaxis[3] = {0.0, 0.0, 0.0};
1325         float norm[3], axis[3], angle, new_quat[4];
1326
1327         if(axisidx > 0) alignaxis[axisidx-1]= 1.0;
1328         else alignaxis[-axisidx-1]= -1.0;
1329
1330         VECCOPY(norm, vec);
1331         Normalize(norm);
1332
1333         angle= (float)acos(Inpf(alignaxis, norm));
1334         Crossf(axis, alignaxis, norm);
1335         VecRotToQuat(axis, -angle, new_quat);
1336
1337         rv3d->view= 0;
1338
1339         if (rv3d->persp==V3D_CAMOB && v3d->camera) {
1340                 /* switch out of camera view */
1341                 float orig_ofs[3];
1342                 float orig_dist= rv3d->dist;
1343                 float orig_lens= v3d->lens;
1344
1345                 VECCOPY(orig_ofs, rv3d->ofs);
1346                 rv3d->persp= V3D_PERSP;
1347                 rv3d->dist= 0.0;
1348                 view_settings_from_ob(v3d->camera, rv3d->ofs, NULL, NULL, &v3d->lens);
1349                 smooth_view(NULL, NULL, NULL, orig_ofs, new_quat, &orig_dist, &orig_lens); // XXX
1350         } else {
1351                 if (rv3d->persp==V3D_CAMOB) rv3d->persp= V3D_PERSP; /* switch out of camera mode */
1352                 smooth_view(NULL, NULL, NULL, NULL, new_quat, NULL, NULL); // XXX
1353         }
1354 }
1355