Merge branch 'master' into blender2.8
[blender.git] / source / blender / editors / transform / transform_generics.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) 2001-2002 by NaN Holding BV.
19  * All rights reserved.
20  *
21  * The Original Code is: all of this file.
22  *
23  * Contributor(s): none yet.
24  *
25  * ***** END GPL LICENSE BLOCK *****
26  */
27
28 /** \file blender/editors/transform/transform_generics.c
29  *  \ingroup edtransform
30  */
31
32 #include <string.h>
33 #include <math.h>
34
35 #include "MEM_guardedalloc.h"
36
37 #include "BLI_sys_types.h" /* for intptr_t support */
38
39 #include "DNA_anim_types.h"
40 #include "DNA_armature_types.h"
41 #include "DNA_brush_types.h"
42 #include "DNA_gpencil_types.h"
43 #include "DNA_lattice_types.h"
44 #include "DNA_screen_types.h"
45 #include "DNA_sequence_types.h"
46 #include "DNA_space_types.h"
47 #include "DNA_scene_types.h"
48 #include "DNA_object_types.h"
49 #include "DNA_mesh_types.h"
50 #include "DNA_view3d_types.h"
51 #include "DNA_modifier_types.h"
52 #include "DNA_movieclip_types.h"
53 #include "DNA_mask_types.h"
54 #include "DNA_meta_types.h"
55
56 #include "BLI_math.h"
57 #include "BLI_blenlib.h"
58 #include "BLI_rand.h"
59 #include "BLI_utildefines.h"
60
61 #include "BLT_translation.h"
62
63 #include "RNA_access.h"
64
65 #include "BIF_gl.h"
66 #include "BIF_glutil.h"
67
68 #include "BIK_api.h"
69
70 #include "BKE_animsys.h"
71 #include "BKE_action.h"
72 #include "BKE_armature.h"
73 #include "BKE_curve.h"
74 #include "BKE_depsgraph.h"
75 #include "BKE_fcurve.h"
76 #include "BKE_lattice.h"
77 #include "BKE_library.h"
78 #include "BKE_nla.h"
79 #include "BKE_context.h"
80 #include "BKE_paint.h"
81 #include "BKE_sequencer.h"
82 #include "BKE_editmesh.h"
83 #include "BKE_tracking.h"
84 #include "BKE_mask.h"
85 #include "BKE_utildefines.h"
86
87 #include "ED_anim_api.h"
88 #include "ED_armature.h"
89 #include "ED_image.h"
90 #include "ED_keyframing.h"
91 #include "ED_markers.h"
92 #include "ED_mesh.h"
93 #include "ED_object.h"
94 #include "ED_screen_types.h"
95 #include "ED_space_api.h"
96 #include "ED_uvedit.h"
97 #include "ED_view3d.h"
98 #include "ED_curve.h" /* for curve_editnurbs */
99 #include "ED_clip.h"
100 #include "ED_screen.h"
101
102 #include "WM_types.h"
103 #include "WM_api.h"
104
105 #include "UI_resources.h"
106 #include "UI_view2d.h"
107
108 #include "transform.h"
109
110 /* ************************** Functions *************************** */
111
112 void getViewVector(TransInfo *t, float coord[3], float vec[3])
113 {
114         if (t->persp != RV3D_ORTHO) {
115                 sub_v3_v3v3(vec, coord, t->viewinv[3]);
116         }
117         else {
118                 copy_v3_v3(vec, t->viewinv[2]);
119         }
120         normalize_v3(vec);
121 }
122
123 /* ************************** GENERICS **************************** */
124
125
126 static void clipMirrorModifier(TransInfo *t, Object *ob)
127 {
128         ModifierData *md = ob->modifiers.first;
129         float tolerance[3] = {0.0f, 0.0f, 0.0f};
130         int axis = 0;
131         
132         for (; md; md = md->next) {
133                 if ((md->type == eModifierType_Mirror) && (md->mode & eModifierMode_Realtime)) {
134                         MirrorModifierData *mmd = (MirrorModifierData *) md;
135                         
136                         if (mmd->flag & MOD_MIR_CLIPPING) {
137                                 axis = 0;
138                                 if (mmd->flag & MOD_MIR_AXIS_X) {
139                                         axis |= 1;
140                                         tolerance[0] = mmd->tolerance;
141                                 }
142                                 if (mmd->flag & MOD_MIR_AXIS_Y) {
143                                         axis |= 2;
144                                         tolerance[1] = mmd->tolerance;
145                                 }
146                                 if (mmd->flag & MOD_MIR_AXIS_Z) {
147                                         axis |= 4;
148                                         tolerance[2] = mmd->tolerance;
149                                 }
150                                 if (axis) {
151                                         float mtx[4][4], imtx[4][4];
152                                         int i;
153                                         TransData *td = t->data;
154                                         
155                                         if (mmd->mirror_ob) {
156                                                 float obinv[4][4];
157                                                 
158                                                 invert_m4_m4(obinv, mmd->mirror_ob->obmat);
159                                                 mul_m4_m4m4(mtx, obinv, ob->obmat);
160                                                 invert_m4_m4(imtx, mtx);
161                                         }
162                                         
163                                         for (i = 0; i < t->total; i++, td++) {
164                                                 int clip;
165                                                 float loc[3], iloc[3];
166                                                 
167                                                 if (td->flag & TD_NOACTION)
168                                                         break;
169                                                 if (td->loc == NULL)
170                                                         break;
171                                                 
172                                                 if (td->flag & TD_SKIP)
173                                                         continue;
174                                                 
175                                                 copy_v3_v3(loc,  td->loc);
176                                                 copy_v3_v3(iloc, td->iloc);
177                                                 
178                                                 if (mmd->mirror_ob) {
179                                                         mul_m4_v3(mtx, loc);
180                                                         mul_m4_v3(mtx, iloc);
181                                                 }
182                                                 
183                                                 clip = 0;
184                                                 if (axis & 1) {
185                                                         if (fabsf(iloc[0]) <= tolerance[0] ||
186                                                             loc[0] * iloc[0] < 0.0f)
187                                                         {
188                                                                 loc[0] = 0.0f;
189                                                                 clip = 1;
190                                                         }
191                                                 }
192                                                 
193                                                 if (axis & 2) {
194                                                         if (fabsf(iloc[1]) <= tolerance[1] ||
195                                                             loc[1] * iloc[1] < 0.0f)
196                                                         {
197                                                                 loc[1] = 0.0f;
198                                                                 clip = 1;
199                                                         }
200                                                 }
201                                                 if (axis & 4) {
202                                                         if (fabsf(iloc[2]) <= tolerance[2] ||
203                                                             loc[2] * iloc[2] < 0.0f)
204                                                         {
205                                                                 loc[2] = 0.0f;
206                                                                 clip = 1;
207                                                         }
208                                                 }
209                                                 if (clip) {
210                                                         if (mmd->mirror_ob) {
211                                                                 mul_m4_v3(imtx, loc);
212                                                         }
213                                                         copy_v3_v3(td->loc, loc);
214                                                 }
215                                         }
216                                 }
217                                 
218                         }
219                 }
220         }
221 }
222
223 /* assumes obedit set to mesh object */
224 static void editbmesh_apply_to_mirror(TransInfo *t)
225 {
226         TransData *td = t->data;
227         BMVert *eve;
228         int i;
229         
230         for (i = 0; i < t->total; i++, td++) {
231                 if (td->flag & TD_NOACTION)
232                         break;
233                 if (td->loc == NULL)
234                         break;
235                 if (td->flag & TD_SKIP)
236                         continue;
237                 
238                 eve = td->extra;
239                 if (eve) {
240                         eve->co[0] = -td->loc[0];
241                         eve->co[1] = td->loc[1];
242                         eve->co[2] = td->loc[2];
243                 }
244                 
245                 if (td->flag & TD_MIRROR_EDGE) {
246                         td->loc[0] = 0;
247                 }
248         }
249 }
250
251 /* for the realtime animation recording feature, handle overlapping data */
252 static void animrecord_check_state(Scene *scene, ID *id, wmTimer *animtimer)
253 {
254         ScreenAnimData *sad = (animtimer) ? animtimer->customdata : NULL;
255         
256         /* sanity checks */
257         if (ELEM(NULL, scene, id, sad))
258                 return;
259         
260         /* check if we need a new strip if:
261          *  - if animtimer is running
262          *      - we're not only keying for available channels
263          *      - the option to add new actions for each round is not enabled
264          */
265         if (IS_AUTOKEY_FLAG(scene, INSERTAVAIL) == 0 && (scene->toolsettings->autokey_flag & ANIMRECORD_FLAG_WITHNLA)) {
266                 /* if playback has just looped around, we need to add a new NLA track+strip to allow a clean pass to occur */
267                 if ((sad) && (sad->flag & ANIMPLAY_FLAG_JUMPED)) {
268                         AnimData *adt = BKE_animdata_from_id(id);
269                         
270                         /* perform push-down manually with some differences 
271                          * NOTE: BKE_nla_action_pushdown() sync warning...
272                          */
273                         if ((adt->action) && !(adt->flag & ADT_NLA_EDIT_ON)) {
274                                 float astart, aend;
275                                 
276                                 /* only push down if action is more than 1-2 frames long */
277                                 calc_action_range(adt->action, &astart, &aend, 1);
278                                 if (aend > astart + 2.0f) {
279                                         NlaStrip *strip = add_nlastrip_to_stack(adt, adt->action);
280                                         
281                                         /* clear reference to action now that we've pushed it onto the stack */
282                                         id_us_min(&adt->action->id);
283                                         adt->action = NULL;
284                                         
285                                         /* adjust blending + extend so that they will behave correctly */
286                                         strip->extendmode = NLASTRIP_EXTEND_NOTHING;
287                                         strip->flag &= ~(NLASTRIP_FLAG_AUTO_BLENDS | NLASTRIP_FLAG_SELECT | NLASTRIP_FLAG_ACTIVE);
288                                         
289                                         /* also, adjust the AnimData's action extend mode to be on 
290                                          * 'nothing' so that previous result still play 
291                                          */
292                                         adt->act_extendmode = NLASTRIP_EXTEND_NOTHING;
293                                 }
294                         }
295                 }
296         }
297 }
298
299 static bool fcu_test_selected(FCurve *fcu)
300 {
301         BezTriple *bezt = fcu->bezt;
302         unsigned int i;
303
304         if (bezt == NULL) /* ignore baked */
305                 return 0;
306
307         for (i = 0; i < fcu->totvert; i++, bezt++) {
308                 if (BEZT_ISSEL_ANY(bezt)) return 1;
309         }
310
311         return 0;
312 }
313
314 /* helper for recalcData() - for Action Editor transforms */
315 static void recalcData_actedit(TransInfo *t)
316 {
317         Scene *scene = t->scene;
318         SpaceAction *saction = (SpaceAction *)t->sa->spacedata.first;
319         
320         bAnimContext ac = {NULL};
321         ListBase anim_data = {NULL, NULL};
322         bAnimListElem *ale;
323         int filter;
324         
325         /* initialize relevant anim-context 'context' data from TransInfo data */
326         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
327         ac.scene = t->scene;
328         ac.obact = OBACT;
329         ac.sa = t->sa;
330         ac.ar = t->ar;
331         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
332         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
333         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
334         
335         ANIM_animdata_context_getdata(&ac);
336         
337         /* perform flush */
338         if (ELEM(ac.datatype, ANIMCONT_GPENCIL, ANIMCONT_MASK)) {
339                 /* flush transform values back to actual coordinates */
340                 flushTransIntFrameActionData(t);
341         }
342         else {
343                 /* get animdata blocks visible in editor, assuming that these will be the ones where things changed */
344                 filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_ANIMDATA);
345                 ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
346                 
347                 /* just tag these animdata-blocks to recalc, assuming that some data there changed 
348                  * BUT only do this if realtime updates are enabled
349                  */
350                 if ((saction->flag & SACTION_NOREALTIMEUPDATES) == 0) {
351                         for (ale = anim_data.first; ale; ale = ale->next) {
352                                 /* set refresh tags for objects using this animation */
353                                 ANIM_list_elem_update(t->scene, ale);
354                         }
355                 }
356                 
357                 /* now free temp channels */
358                 ANIM_animdata_freelist(&anim_data);
359         }
360 }
361 /* helper for recalcData() - for Graph Editor transforms */
362 static void recalcData_graphedit(TransInfo *t)
363 {
364         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
365         Scene *scene;
366         
367         ListBase anim_data = {NULL, NULL};
368         bAnimContext ac = {NULL};
369         int filter;
370         
371         bAnimListElem *ale;
372         int dosort = 0;
373
374         /* initialize relevant anim-context 'context' data from TransInfo data */
375         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
376         scene = ac.scene = t->scene;
377         ac.obact = OBACT;
378         ac.sa = t->sa;
379         ac.ar = t->ar;
380         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
381         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
382         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
383         
384         ANIM_animdata_context_getdata(&ac);
385         
386         /* do the flush first */
387         flushTransGraphData(t);
388         
389         /* get curves to check if a re-sort is needed */
390         filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_FOREDIT | ANIMFILTER_CURVE_VISIBLE);
391         ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
392         
393         /* now test if there is a need to re-sort */
394         for (ale = anim_data.first; ale; ale = ale->next) {
395                 FCurve *fcu = (FCurve *)ale->key_data;
396                 
397                 /* ignore FC-Curves without any selected verts */
398                 if (!fcu_test_selected(fcu))
399                         continue;
400
401                 /* watch it: if the time is wrong: do not correct handles yet */
402                 if (test_time_fcurve(fcu))
403                         dosort++;
404                 else
405                         calchandles_fcurve(fcu);
406                 
407                 /* set refresh tags for objects using this animation,
408                  * BUT only if realtime updates are enabled  
409                  */
410                 if ((sipo->flag & SIPO_NOREALTIMEUPDATES) == 0)
411                         ANIM_list_elem_update(t->scene, ale);
412         }
413         
414         /* do resort and other updates? */
415         if (dosort) remake_graph_transdata(t, &anim_data);
416         
417         /* now free temp channels */
418         ANIM_animdata_freelist(&anim_data);
419 }
420
421 /* helper for recalcData() - for NLA Editor transforms */
422 static void recalcData_nla(TransInfo *t)
423 {
424         TransDataNla *tdn = t->custom.type.data;
425         SpaceNla *snla = (SpaceNla *)t->sa->spacedata.first;
426         Scene *scene = t->scene;
427         double secf = FPS;
428         int i;
429         
430         /* for each strip we've got, perform some additional validation of the values that got set before
431          * using RNA to set the value (which does some special operations when setting these values to make
432          * sure that everything works ok)
433          */
434         for (i = 0; i < t->total; i++, tdn++) {
435                 NlaStrip *strip = tdn->strip;
436                 PointerRNA strip_ptr;
437                 short pExceeded, nExceeded, iter;
438                 int delta_y1, delta_y2;
439                 
440                 /* if this tdn has no handles, that means it is just a dummy that should be skipped */
441                 if (tdn->handle == 0)
442                         continue;
443                 
444                 /* set refresh tags for objects using this animation,
445                  * BUT only if realtime updates are enabled  
446                  */
447                 if ((snla->flag & SNLA_NOREALTIMEUPDATES) == 0)
448                         ANIM_id_update(t->scene, tdn->id);
449                 
450                 /* if canceling transform, just write the values without validating, then move on */
451                 if (t->state == TRANS_CANCEL) {
452                         /* clear the values by directly overwriting the originals, but also need to restore
453                          * endpoints of neighboring transition-strips
454                          */
455                         
456                         /* start */
457                         strip->start = tdn->h1[0];
458                         
459                         if ((strip->prev) && (strip->prev->type == NLASTRIP_TYPE_TRANSITION))
460                                 strip->prev->end = tdn->h1[0];
461                         
462                         /* end */
463                         strip->end = tdn->h2[0];
464                         
465                         if ((strip->next) && (strip->next->type == NLASTRIP_TYPE_TRANSITION))
466                                 strip->next->start = tdn->h2[0];
467                         
468                         /* flush transforms to child strips (since this should be a meta) */
469                         BKE_nlameta_flush_transforms(strip);
470                         
471                         /* restore to original track (if needed) */
472                         if (tdn->oldTrack != tdn->nlt) {
473                                 /* just append to end of list for now, since strips get sorted in special_aftertrans_update() */
474                                 BLI_remlink(&tdn->nlt->strips, strip);
475                                 BLI_addtail(&tdn->oldTrack->strips, strip);
476                         }
477                         
478                         continue;
479                 }
480                 
481                 /* firstly, check if the proposed transform locations would overlap with any neighboring strips
482                  * (barring transitions) which are absolute barriers since they are not being moved
483                  *
484                  * this is done as a iterative procedure (done 5 times max for now)
485                  */
486                 for (iter = 0; iter < 5; iter++) {
487                         pExceeded = ((strip->prev) && (strip->prev->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h1[0] < strip->prev->end));
488                         nExceeded = ((strip->next) && (strip->next->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h2[0] > strip->next->start));
489                         
490                         if ((pExceeded && nExceeded) || (iter == 4)) {
491                                 /* both endpoints exceeded (or iteration ping-pong'd meaning that we need a compromise)
492                                  *      - simply crop strip to fit within the bounds of the strips bounding it
493                                  *      - if there were no neighbors, clear the transforms (make it default to the strip's current values)
494                                  */
495                                 if (strip->prev && strip->next) {
496                                         tdn->h1[0] = strip->prev->end;
497                                         tdn->h2[0] = strip->next->start;
498                                 }
499                                 else {
500                                         tdn->h1[0] = strip->start;
501                                         tdn->h2[0] = strip->end;
502                                 }
503                         }
504                         else if (nExceeded) {
505                                 /* move backwards */
506                                 float offset = tdn->h2[0] - strip->next->start;
507                                 
508                                 tdn->h1[0] -= offset;
509                                 tdn->h2[0] -= offset;
510                         }
511                         else if (pExceeded) {
512                                 /* more forwards */
513                                 float offset = strip->prev->end - tdn->h1[0];
514                                 
515                                 tdn->h1[0] += offset;
516                                 tdn->h2[0] += offset;
517                         }
518                         else /* all is fine and well */
519                                 break;
520                 }
521                 
522                 /* handle auto-snapping
523                  * NOTE: only do this when transform is still running, or we can't restore
524                  */
525                 if (t->state != TRANS_CANCEL) {
526                         switch (snla->autosnap) {
527                                 case SACTSNAP_FRAME: /* snap to nearest frame */
528                                 case SACTSNAP_STEP: /* frame step - this is basically the same, since we don't have any remapping going on */
529                                 {
530                                         tdn->h1[0] = floorf(tdn->h1[0] + 0.5f);
531                                         tdn->h2[0] = floorf(tdn->h2[0] + 0.5f);
532                                         break;
533                                 }
534                                 
535                                 case SACTSNAP_SECOND: /* snap to nearest second */
536                                 case SACTSNAP_TSTEP: /* second step - this is basically the same, since we don't have any remapping going on */
537                                 {
538                                         /* This case behaves differently from the rest, since lengths of strips
539                                          * may not be multiples of a second. If we just naively resize adjust
540                                          * the handles, things may not work correctly. Instead, we only snap
541                                          * the first handle, and move the other to fit.
542                                          *
543                                          * FIXME: we do run into problems here when user attempts to negatively
544                                          *        scale the strip, as it then just compresses down and refuses
545                                          *        to expand out the other end.
546                                          */
547                                         float h1_new = (float)(floor(((double)tdn->h1[0] / secf) + 0.5) * secf);
548                                         float delta  = h1_new - tdn->h1[0];
549                                         
550                                         tdn->h1[0] = h1_new;
551                                         tdn->h2[0] += delta;
552                                         break;
553                                 }
554                                 
555                                 case SACTSNAP_MARKER: /* snap to nearest marker */
556                                 {
557                                         tdn->h1[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h1[0]);
558                                         tdn->h2[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h2[0]);
559                                         break;
560                                 }
561                         }
562                 }
563                 
564                 /* Use RNA to write the values to ensure that constraints on these are obeyed
565                  * (e.g. for transition strips, the values are taken from the neighbours)
566                  * 
567                  * NOTE: we write these twice to avoid truncation errors which can arise when
568                  * moving the strips a large distance using numeric input [#33852] 
569                  */
570                 RNA_pointer_create(NULL, &RNA_NlaStrip, strip, &strip_ptr);
571                 
572                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
573                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
574                 
575                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
576                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
577                 
578                 /* flush transforms to child strips (since this should be a meta) */
579                 BKE_nlameta_flush_transforms(strip);
580                 
581                 
582                 /* now, check if we need to try and move track
583                  *      - we need to calculate both, as only one may have been altered by transform if only 1 handle moved
584                  */
585                 delta_y1 = ((int)tdn->h1[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
586                 delta_y2 = ((int)tdn->h2[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
587                 
588                 if (delta_y1 || delta_y2) {
589                         NlaTrack *track;
590                         int delta = (delta_y2) ? delta_y2 : delta_y1;
591                         int n;
592                         
593                         /* move in the requested direction, checking at each layer if there's space for strip to pass through,
594                          * stopping on the last track available or that we're able to fit in
595                          */
596                         if (delta > 0) {
597                                 for (track = tdn->nlt->next, n = 0; (track) && (n < delta); track = track->next, n++) {
598                                         /* check if space in this track for the strip */
599                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
600                                                 /* move strip to this track */
601                                                 BLI_remlink(&tdn->nlt->strips, strip);
602                                                 BKE_nlatrack_add_strip(track, strip);
603                                                 
604                                                 tdn->nlt = track;
605                                                 tdn->trackIndex++;
606                                         }
607                                         else /* can't move any further */
608                                                 break;
609                                 }
610                         }
611                         else {
612                                 /* make delta 'positive' before using it, since we now know to go backwards */
613                                 delta = -delta;
614                                 
615                                 for (track = tdn->nlt->prev, n = 0; (track) && (n < delta); track = track->prev, n++) {
616                                         /* check if space in this track for the strip */
617                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
618                                                 /* move strip to this track */
619                                                 BLI_remlink(&tdn->nlt->strips, strip);
620                                                 BKE_nlatrack_add_strip(track, strip);
621                                                 
622                                                 tdn->nlt = track;
623                                                 tdn->trackIndex--;
624                                         }
625                                         else /* can't move any further */
626                                                 break;
627                                 }
628                         }
629                 }
630         }
631 }
632
633 static void recalcData_mask_common(TransInfo *t)
634 {
635         Mask *mask = CTX_data_edit_mask(t->context);
636
637         flushTransMasking(t);
638
639         DAG_id_tag_update(&mask->id, 0);
640 }
641
642 /* helper for recalcData() - for Image Editor transforms */
643 static void recalcData_image(TransInfo *t)
644 {
645         if (t->options & CTX_MASK) {
646                 recalcData_mask_common(t);
647         }
648         else if (t->options & CTX_PAINT_CURVE) {
649                 flushTransPaintCurve(t);
650         }
651         else if (t->obedit && t->obedit->type == OB_MESH) {
652                 SpaceImage *sima = t->sa->spacedata.first;
653                 
654                 flushTransUVs(t);
655                 if (sima->flag & SI_LIVE_UNWRAP)
656                         ED_uvedit_live_unwrap_re_solve();
657                 
658                 DAG_id_tag_update(t->obedit->data, 0);
659         }
660 }
661
662 /* helper for recalcData() - for Movie Clip transforms */
663 static void recalcData_spaceclip(TransInfo *t)
664 {
665         SpaceClip *sc = t->sa->spacedata.first;
666
667         if (ED_space_clip_check_show_trackedit(sc)) {
668                 MovieClip *clip = ED_space_clip_get_clip(sc);
669                 ListBase *tracksbase = BKE_tracking_get_active_tracks(&clip->tracking);
670                 MovieTrackingTrack *track;
671                 int framenr = ED_space_clip_get_clip_frame_number(sc);
672
673                 flushTransTracking(t);
674
675                 track = tracksbase->first;
676                 while (track) {
677                         if (TRACK_VIEW_SELECTED(sc, track) && (track->flag & TRACK_LOCKED) == 0) {
678                                 MovieTrackingMarker *marker = BKE_tracking_marker_get(track, framenr);
679
680                                 if (t->mode == TFM_TRANSLATION) {
681                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
682                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
683                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
684                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_POS);
685                                 }
686                                 else if (t->mode == TFM_RESIZE) {
687                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
688                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_DIM);
689                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
690                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_DIM);
691                                 }
692                                 else if (t->mode == TFM_ROTATION) {
693                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
694                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
695                                 }
696                         }
697
698                         track = track->next;
699                 }
700
701                 DAG_id_tag_update(&clip->id, 0);
702         }
703         else if (t->options & CTX_MASK) {
704                 recalcData_mask_common(t);
705         }
706 }
707
708 /* helper for recalcData() - for object transforms, typically in the 3D view */
709 static void recalcData_objects(TransInfo *t)
710 {
711         if (t->obedit) {
712                 if (ELEM(t->obedit->type, OB_CURVE, OB_SURF)) {
713                         Curve *cu = t->obedit->data;
714                         ListBase *nurbs = BKE_curve_editNurbs_get(cu);
715                         Nurb *nu = nurbs->first;
716                         
717                         if (t->state != TRANS_CANCEL) {
718                                 clipMirrorModifier(t, t->obedit);
719                                 applyProject(t);
720                         }
721                         
722                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
723                                 
724                         if (t->state == TRANS_CANCEL) {
725                                 while (nu) {
726                                         BKE_nurb_handles_calc(nu); /* Cant do testhandlesNurb here, it messes up the h1 and h2 flags */
727                                         nu = nu->next;
728                                 }
729                         }
730                         else {
731                                 /* Normal updating */
732                                 while (nu) {
733                                         BKE_nurb_test2D(nu);
734                                         BKE_nurb_handles_calc(nu);
735                                         nu = nu->next;
736                                 }
737                         }
738                 }
739                 else if (t->obedit->type == OB_LATTICE) {
740                         Lattice *la = t->obedit->data;
741                         
742                         if (t->state != TRANS_CANCEL) {
743                                 applyProject(t);
744                         }
745                         
746                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
747                         
748                         if (la->editlatt->latt->flag & LT_OUTSIDE) outside_lattice(la->editlatt->latt);
749                 }
750                 else if (t->obedit->type == OB_MESH) {
751                         BMEditMesh *em = BKE_editmesh_from_object(t->obedit);
752                         /* mirror modifier clipping? */
753                         if (t->state != TRANS_CANCEL) {
754                                 /* apply clipping after so we never project past the clip plane [#25423] */
755                                 applyProject(t);
756                                 clipMirrorModifier(t, t->obedit);
757                         }
758                         if ((t->options & CTX_NO_MIRROR) == 0 && (t->flag & T_MIRROR))
759                                 editbmesh_apply_to_mirror(t);
760
761                         if (t->mode == TFM_EDGE_SLIDE) {
762                                 projectEdgeSlideData(t, false);
763                         }
764                         else if (t->mode == TFM_VERT_SLIDE) {
765                                 projectVertSlideData(t, false);
766                         }
767
768                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
769                         
770                         EDBM_mesh_normals_update(em);
771                         BKE_editmesh_tessface_calc(em);
772                 }
773                 else if (t->obedit->type == OB_ARMATURE) { /* no recalc flag, does pose */
774                         bArmature *arm = t->obedit->data;
775                         ListBase *edbo = arm->edbo;
776                         EditBone *ebo, *ebo_parent;
777                         TransData *td = t->data;
778                         int i;
779                         
780                         if (t->state != TRANS_CANCEL) {
781                                 applyProject(t);
782                         }
783                         
784                         /* Ensure all bones are correctly adjusted */
785                         for (ebo = edbo->first; ebo; ebo = ebo->next) {
786                                 ebo_parent = (ebo->flag & BONE_CONNECTED) ? ebo->parent : NULL;
787                                 
788                                 if (ebo_parent) {
789                                         /* If this bone has a parent tip that has been moved */
790                                         if (ebo_parent->flag & BONE_TIPSEL) {
791                                                 copy_v3_v3(ebo->head, ebo_parent->tail);
792                                                 if (t->mode == TFM_BONE_ENVELOPE) ebo->rad_head = ebo_parent->rad_tail;
793                                         }
794                                         /* If this bone has a parent tip that has NOT been moved */
795                                         else {
796                                                 copy_v3_v3(ebo_parent->tail, ebo->head);
797                                                 if (t->mode == TFM_BONE_ENVELOPE) ebo_parent->rad_tail = ebo->rad_head;
798                                         }
799                                 }
800                                 
801                                 /* on extrude bones, oldlength==0.0f, so we scale radius of points */
802                                 ebo->length = len_v3v3(ebo->head, ebo->tail);
803                                 if (ebo->oldlength == 0.0f) {
804                                         ebo->rad_head = 0.25f * ebo->length;
805                                         ebo->rad_tail = 0.10f * ebo->length;
806                                         ebo->dist = 0.25f * ebo->length;
807                                         if (ebo->parent) {
808                                                 if (ebo->rad_head > ebo->parent->rad_tail)
809                                                         ebo->rad_head = ebo->parent->rad_tail;
810                                         }
811                                 }
812                                 else if (t->mode != TFM_BONE_ENVELOPE) {
813                                         /* if bones change length, lets do that for the deform distance as well */
814                                         ebo->dist *= ebo->length / ebo->oldlength;
815                                         ebo->rad_head *= ebo->length / ebo->oldlength;
816                                         ebo->rad_tail *= ebo->length / ebo->oldlength;
817                                         ebo->oldlength = ebo->length;
818
819                                         if (ebo_parent) {
820                                                 ebo_parent->rad_tail = ebo->rad_head;
821                                         }
822                                 }
823                         }
824                         
825                         if (!ELEM(t->mode, TFM_BONE_ROLL, TFM_BONE_ENVELOPE, TFM_BONE_ENVELOPE_DIST, TFM_BONESIZE)) {
826                                 /* fix roll */
827                                 for (i = 0; i < t->total; i++, td++) {
828                                         if (td->extra) {
829                                                 float vec[3], up_axis[3];
830                                                 float qrot[4];
831                                                 float roll;
832                                                 
833                                                 ebo = td->extra;
834
835                                                 if (t->state == TRANS_CANCEL) {
836                                                         /* restore roll */
837                                                         ebo->roll = td->ival;
838                                                 }
839                                                 else {
840                                                         copy_v3_v3(up_axis, td->axismtx[2]);
841
842                                                         sub_v3_v3v3(vec, ebo->tail, ebo->head);
843                                                         normalize_v3(vec);
844                                                         rotation_between_vecs_to_quat(qrot, td->axismtx[1], vec);
845                                                         mul_qt_v3(qrot, up_axis);
846
847                                                         /* roll has a tendency to flip in certain orientations - [#34283], [#33974] */
848                                                         roll = ED_rollBoneToVector(ebo, up_axis, false);
849                                                         ebo->roll = angle_compat_rad(roll, td->ival);
850                                                 }
851                                         }
852                                 }
853                         }
854                         
855                         if (arm->flag & ARM_MIRROR_EDIT) {
856                                 if (t->state != TRANS_CANCEL)
857                                         transform_armature_mirror_update(t->obedit);
858                                 else
859                                         restoreBones(t);
860                         }
861                 }
862                 else {
863                         if (t->state != TRANS_CANCEL) {
864                                 applyProject(t);
865                         }
866                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
867                 }
868         }
869         else if ((t->flag & T_POSE) && t->poseobj) {
870                 Object *ob = t->poseobj;
871                 bArmature *arm = ob->data;
872                 
873                 /* if animtimer is running, and the object already has animation data,
874                  * check if the auto-record feature means that we should record 'samples'
875                  * (i.e. uneditable animation values)
876                  *
877                  * context is needed for keying set poll() functions.
878                  */
879                 // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
880                 if ((t->animtimer) && (t->context) && IS_AUTOKEY_ON(t->scene)) {
881                         int targetless_ik = (t->flag & T_AUTOIK); // XXX this currently doesn't work, since flags aren't set yet!
882                         
883                         animrecord_check_state(t->scene, &ob->id, t->animtimer);
884                         autokeyframe_pose_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode, targetless_ik);
885                 }
886                 
887                 /* old optimize trick... this enforces to bypass the depgraph */
888                 if (!(arm->flag & ARM_DELAYDEFORM)) {
889                         DAG_id_tag_update(&ob->id, OB_RECALC_DATA);  /* sets recalc flags */
890                         /* transformation of pose may affect IK tree, make sure it is rebuilt */
891                         BIK_clear_data(ob->pose);
892                 }
893                 else
894                         BKE_pose_where_is(t->scene, ob);
895         }
896         else {
897                 int i;
898                 
899                 if (t->state != TRANS_CANCEL) {
900                         applyProject(t);
901                 }
902                 
903                 for (i = 0; i < t->total; i++) {
904                         TransData *td = t->data + i;
905                         Object *ob = td->ob;
906                         
907                         if (td->flag & TD_NOACTION)
908                                 break;
909                         
910                         if (td->flag & TD_SKIP)
911                                 continue;
912                         
913                         /* if animtimer is running, and the object already has animation data,
914                          * check if the auto-record feature means that we should record 'samples'
915                          * (i.e. uneditable animation values)
916                          */
917                         // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
918                         if ((t->animtimer) && IS_AUTOKEY_ON(t->scene)) {
919                                 animrecord_check_state(t->scene, &ob->id, t->animtimer);
920                                 autokeyframe_ob_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode);
921                         }
922                         
923                         /* sets recalc flags fully, instead of flushing existing ones 
924                          * otherwise proxies don't function correctly
925                          */
926                         DAG_id_tag_update(&ob->id, OB_RECALC_OB);
927
928                         if (t->flag & T_TEXTURE)
929                                 DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
930                 }
931         }
932 }
933
934 /* helper for recalcData() - for sequencer transforms */
935 static void recalcData_sequencer(TransInfo *t)
936 {
937         TransData *td;
938         int a;
939         Sequence *seq_prev = NULL;
940
941         for (a = 0, td = t->data; a < t->total; a++, td++) {
942                 TransDataSeq *tdsq = (TransDataSeq *) td->extra;
943                 Sequence *seq = tdsq->seq;
944
945                 if (seq != seq_prev) {
946                         if (BKE_sequence_tx_fullupdate_test(seq)) {
947                                 /* A few effect strip types need a complete recache on transform. */
948                                 BKE_sequence_invalidate_cache(t->scene, seq);
949                         }
950                         else {
951                                 BKE_sequence_invalidate_dependent(t->scene, seq);
952                         }
953                 }
954
955                 seq_prev = seq;
956         }
957
958         BKE_sequencer_preprocessed_cache_cleanup();
959
960         flushTransSeq(t);
961 }
962
963 /* force recalculation of triangles during transformation */
964 static void recalcData_gpencil_strokes(TransInfo *t)
965  {
966         TransData *td = t->data;
967         for (int i = 0; i < t->total; i++, td++) {
968                 bGPDstroke *gps = td->extra;
969                 gps->flag |= GP_STROKE_RECALC_CACHES;
970         }
971 }
972
973 /* called for updating while transform acts, once per redraw */
974 void recalcData(TransInfo *t)
975 {
976         /* if tests must match createTransData for correct updates */
977         if (t->options & CTX_TEXTURE) {
978                 recalcData_objects(t);
979         }
980         else if (t->options & CTX_EDGE) {
981                 recalcData_objects(t);
982         }
983         else if (t->options & CTX_PAINT_CURVE) {
984                 flushTransPaintCurve(t);
985         }
986         else if (t->options & CTX_GPENCIL_STROKES) {
987                 /* set recalc triangle cache flag */
988                 recalcData_gpencil_strokes(t);
989         }
990         else if (t->spacetype == SPACE_IMAGE) {
991                 recalcData_image(t);
992         }
993         else if (t->spacetype == SPACE_ACTION) {
994                 recalcData_actedit(t);
995         }
996         else if (t->spacetype == SPACE_NLA) {
997                 recalcData_nla(t);
998         }
999         else if (t->spacetype == SPACE_SEQ) {
1000                 recalcData_sequencer(t);
1001         }
1002         else if (t->spacetype == SPACE_IPO) {
1003                 recalcData_graphedit(t);
1004         }
1005         else if (t->spacetype == SPACE_NODE) {
1006                 flushTransNodes(t);
1007         }
1008         else if (t->spacetype == SPACE_CLIP) {
1009                 recalcData_spaceclip(t);
1010         }
1011         else {
1012                 recalcData_objects(t);
1013         }
1014 }
1015
1016 void drawLine(TransInfo *t, const float center[3], const float dir[3], char axis, short options)
1017 {
1018         float v1[3], v2[3], v3[3];
1019         unsigned char col[3], col2[3];
1020
1021         if (t->spacetype == SPACE_VIEW3D) {
1022                 View3D *v3d = t->view;
1023                 
1024                 glPushMatrix();
1025                 
1026                 //if (t->obedit) glLoadMatrixf(t->obedit->obmat);       // sets opengl viewing
1027                 
1028                 
1029                 copy_v3_v3(v3, dir);
1030                 mul_v3_fl(v3, v3d->far);
1031                 
1032                 sub_v3_v3v3(v2, center, v3);
1033                 add_v3_v3v3(v1, center, v3);
1034                 
1035                 if (options & DRAWLIGHT) {
1036                         col[0] = col[1] = col[2] = 220;
1037                 }
1038                 else {
1039                         UI_GetThemeColor3ubv(TH_GRID, col);
1040                 }
1041                 UI_make_axis_color(col, col2, axis);
1042                 glColor3ubv(col2);
1043                 
1044                 setlinestyle(0);
1045                 glBegin(GL_LINES);
1046                 glVertex3fv(v1);
1047                 glVertex3fv(v2);
1048                 glEnd();
1049                 
1050                 glPopMatrix();
1051         }
1052 }
1053
1054 /**
1055  * Free data before switching to another mode.
1056  */
1057 void resetTransModal(TransInfo *t)
1058 {
1059         if (t->mode == TFM_EDGE_SLIDE) {
1060                 freeEdgeSlideVerts(t, &t->custom.mode);
1061         }
1062         else if (t->mode == TFM_VERT_SLIDE) {
1063                 freeVertSlideVerts(t, &t->custom.mode);
1064         }
1065 }
1066
1067 void resetTransRestrictions(TransInfo *t)
1068 {
1069         t->flag &= ~T_ALL_RESTRICTIONS;
1070 }
1071
1072 static int initTransInfo_edit_pet_to_flag(const int proportional)
1073 {
1074         switch (proportional) {
1075                 case PROP_EDIT_ON:
1076                         return T_PROP_EDIT;
1077                 case PROP_EDIT_CONNECTED:
1078                         return T_PROP_EDIT | T_PROP_CONNECTED;
1079                 case PROP_EDIT_PROJECTED:
1080                         return T_PROP_EDIT | T_PROP_PROJECTED;
1081                 default:
1082                         return 0;
1083         }
1084 }
1085
1086 /**
1087  * Setup internal data, mouse, vectors
1088  *
1089  * \note \a op and \a event can be NULL
1090  *
1091  * \see #saveTransform does the reverse.
1092  */
1093 void initTransInfo(bContext *C, TransInfo *t, wmOperator *op, const wmEvent *event)
1094 {
1095         Scene *sce = CTX_data_scene(C);
1096         ToolSettings *ts = CTX_data_tool_settings(C);
1097         ARegion *ar = CTX_wm_region(C);
1098         ScrArea *sa = CTX_wm_area(C);
1099         Object *obedit = CTX_data_edit_object(C);
1100         Object *ob = CTX_data_active_object(C);
1101         bGPdata *gpd = CTX_data_gpencil_data(C);
1102         PropertyRNA *prop;
1103         
1104         t->scene = sce;
1105         t->sa = sa;
1106         t->ar = ar;
1107         t->obedit = obedit;
1108         t->settings = ts;
1109         t->reports = op ? op->reports : NULL;
1110
1111         if (obedit) {
1112                 copy_m3_m4(t->obedit_mat, obedit->obmat);
1113                 normalize_m3(t->obedit_mat);
1114         }
1115
1116         t->data = NULL;
1117         t->ext = NULL;
1118         
1119         t->helpline = HLP_NONE;
1120         
1121         t->flag = 0;
1122         
1123         t->redraw = TREDRAW_HARD;  /* redraw first time */
1124         
1125         if (event) {
1126                 t->mouse.imval[0] = event->mval[0];
1127                 t->mouse.imval[1] = event->mval[1];
1128         }
1129         else {
1130                 t->mouse.imval[0] = 0;
1131                 t->mouse.imval[1] = 0;
1132         }
1133         
1134         t->con.imval[0] = t->mouse.imval[0];
1135         t->con.imval[1] = t->mouse.imval[1];
1136         
1137         t->mval[0] = t->mouse.imval[0];
1138         t->mval[1] = t->mouse.imval[1];
1139         
1140         t->transform        = NULL;
1141         t->handleEvent      = NULL;
1142         
1143         t->total            = 0;
1144         
1145         t->val = 0.0f;
1146
1147         zero_v3(t->vec);
1148         zero_v3(t->center);
1149         zero_v3(t->center_global);
1150
1151         unit_m3(t->mat);
1152         
1153         /* if there's an event, we're modal */
1154         if (event) {
1155                 t->flag |= T_MODAL;
1156         }
1157
1158         /* Crease needs edge flag */
1159         if (ELEM(t->mode, TFM_CREASE, TFM_BWEIGHT)) {
1160                 t->options |= CTX_EDGE;
1161         }
1162
1163         t->remove_on_cancel = false;
1164
1165         if (op && (prop = RNA_struct_find_property(op->ptr, "remove_on_cancel")) && RNA_property_is_set(op->ptr, prop)) {
1166                 if (RNA_property_boolean_get(op->ptr, prop)) {
1167                         t->remove_on_cancel = true;
1168                 }
1169         }
1170         
1171         /* GPencil editing context */
1172         if ((gpd) && (gpd->flag & GP_DATA_STROKE_EDITMODE)) {
1173                 t->options |= CTX_GPENCIL_STROKES;
1174         }
1175
1176         /* Assign the space type, some exceptions for running in different mode */
1177         if (sa == NULL) {
1178                 /* background mode */
1179                 t->spacetype = SPACE_EMPTY;
1180         }
1181         else if ((ar == NULL) && (sa->spacetype == SPACE_VIEW3D)) {
1182                 /* running in the text editor */
1183                 t->spacetype = SPACE_EMPTY;
1184         }
1185         else {
1186                 /* normal operation */
1187                 t->spacetype = sa->spacetype;
1188         }
1189
1190         /* handle T_ALT_TRANSFORM initialization, we may use for different operators */
1191         if (op) {
1192                 const char *prop_id = NULL;
1193                 if (t->mode == TFM_SHRINKFATTEN) {
1194                         prop_id = "use_even_offset";
1195                 }
1196
1197                 if (prop_id && (prop = RNA_struct_find_property(op->ptr, prop_id)) &&
1198                     RNA_property_is_set(op->ptr, prop))
1199                 {
1200                         BKE_BIT_TEST_SET(t->flag, RNA_property_boolean_get(op->ptr, prop), T_ALT_TRANSFORM);
1201                 }
1202         }
1203
1204         if (t->spacetype == SPACE_VIEW3D) {
1205                 View3D *v3d = sa->spacedata.first;
1206                 bScreen *animscreen = ED_screen_animation_playing(CTX_wm_manager(C));
1207                 
1208                 t->view = v3d;
1209                 t->animtimer = (animscreen) ? animscreen->animtimer : NULL;
1210                 
1211                 /* turn manipulator off during transform */
1212                 // FIXME: but don't do this when USING the manipulator...
1213                 if (t->flag & T_MODAL) {
1214                         t->twtype = v3d->twtype;
1215                         v3d->twtype = 0;
1216                 }
1217
1218                 if (v3d->flag & V3D_ALIGN) t->flag |= T_V3D_ALIGN;
1219                 t->around = v3d->around;
1220                 
1221                 /* bend always uses the cursor */
1222                 if (t->mode == TFM_BEND) {
1223                         t->around = V3D_AROUND_CURSOR;
1224                 }
1225
1226                 t->current_orientation = v3d->twmode;
1227
1228                 /* exceptional case */
1229                 if (t->around == V3D_AROUND_LOCAL_ORIGINS) {
1230                         if (ELEM(t->mode, TFM_ROTATION, TFM_RESIZE, TFM_TRACKBALL)) {
1231                                 const bool use_island = transdata_check_local_islands(t, t->around);
1232
1233                                 if (obedit && !use_island) {
1234                                         t->options |= CTX_NO_PET;
1235                                 }
1236                         }
1237                 }
1238
1239                 if (ob && ob->mode & OB_MODE_ALL_PAINT) {
1240                         Paint *p = BKE_paint_get_active_from_context(C);
1241                         if (p && p->brush && (p->brush->flag & BRUSH_CURVE)) {
1242                                 t->options |= CTX_PAINT_CURVE;
1243                         }
1244                 }
1245
1246                 /* initialize UV transform from */
1247                 if (op && ((prop = RNA_struct_find_property(op->ptr, "correct_uv")))) {
1248                         if (RNA_property_is_set(op->ptr, prop)) {
1249                                 if (RNA_property_boolean_get(op->ptr, prop)) {
1250                                         t->settings->uvcalc_flag |= UVCALC_TRANSFORM_CORRECT;
1251                                 }
1252                                 else {
1253                                         t->settings->uvcalc_flag &= ~UVCALC_TRANSFORM_CORRECT;
1254                                 }
1255                         }
1256                         else {
1257                                 RNA_property_boolean_set(op->ptr, prop, (t->settings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) != 0);
1258                         }
1259                 }
1260
1261         }
1262         else if (t->spacetype == SPACE_IMAGE) {
1263                 SpaceImage *sima = sa->spacedata.first;
1264                 // XXX for now, get View2D from the active region
1265                 t->view = &ar->v2d;
1266                 t->around = sima->around;
1267
1268                 if (ED_space_image_show_uvedit(sima, t->obedit)) {
1269                         /* UV transform */
1270                 }
1271                 else if (sima->mode == SI_MODE_MASK) {
1272                         t->options |= CTX_MASK;
1273                 }
1274                 else if (sima->mode == SI_MODE_PAINT) {
1275                         Paint *p = &sce->toolsettings->imapaint.paint;
1276                         if (p->brush && (p->brush->flag & BRUSH_CURVE)) {
1277                                 t->options |= CTX_PAINT_CURVE;
1278                         }
1279                 }
1280                 /* image not in uv edit, nor in mask mode, can happen for some tools */
1281         }
1282         else if (t->spacetype == SPACE_NODE) {
1283                 // XXX for now, get View2D from the active region
1284                 t->view = &ar->v2d;
1285                 t->around = V3D_AROUND_CENTER_BOUNDS;
1286         }
1287         else if (t->spacetype == SPACE_IPO) {
1288                 SpaceIpo *sipo = sa->spacedata.first;
1289                 t->view = &ar->v2d;
1290                 t->around = sipo->around;
1291         }
1292         else if (t->spacetype == SPACE_CLIP) {
1293                 SpaceClip *sclip = sa->spacedata.first;
1294                 t->view = &ar->v2d;
1295                 t->around = sclip->around;
1296
1297                 if (ED_space_clip_check_show_trackedit(sclip))
1298                         t->options |= CTX_MOVIECLIP;
1299                 else if (ED_space_clip_check_show_maskedit(sclip))
1300                         t->options |= CTX_MASK;
1301         }
1302         else {
1303                 if (ar) {
1304                         // XXX for now, get View2D  from the active region
1305                         t->view = &ar->v2d;
1306                         // XXX for now, the center point is the midpoint of the data
1307                 }
1308                 else {
1309                         t->view = NULL;
1310                 }
1311                 t->around = V3D_AROUND_CENTER_BOUNDS;
1312         }
1313
1314         if (op && ((prop = RNA_struct_find_property(op->ptr, "constraint_orientation")) &&
1315                    RNA_property_is_set(op->ptr, prop)))
1316         {
1317                 t->current_orientation = RNA_property_enum_get(op->ptr, prop);
1318
1319                 if (t->current_orientation >= V3D_MANIP_CUSTOM + BIF_countTransformOrientation(C)) {
1320                         t->current_orientation = V3D_MANIP_GLOBAL;
1321                 }
1322         }
1323         
1324         if (op && ((prop = RNA_struct_find_property(op->ptr, "release_confirm")) &&
1325                    RNA_property_is_set(op->ptr, prop)))
1326         {
1327                 if (RNA_property_boolean_get(op->ptr, prop)) {
1328                         t->flag |= T_RELEASE_CONFIRM;
1329                 }
1330         }
1331         else {
1332                 if (U.flag & USER_RELEASECONFIRM) {
1333                         t->flag |= T_RELEASE_CONFIRM;
1334                 }
1335         }
1336
1337         if (op && ((prop = RNA_struct_find_property(op->ptr, "mirror")) &&
1338                    RNA_property_is_set(op->ptr, prop)))
1339         {
1340                 if (RNA_property_boolean_get(op->ptr, prop)) {
1341                         t->flag |= T_MIRROR;
1342                         t->mirror = 1;
1343                 }
1344         }
1345         // Need stuff to take it from edit mesh or whatnot here
1346         else if (t->spacetype == SPACE_VIEW3D) {
1347                 if (t->obedit && t->obedit->type == OB_MESH && (((Mesh *)t->obedit->data)->editflag & ME_EDIT_MIRROR_X)) {
1348                         t->flag |= T_MIRROR;
1349                         t->mirror = 1;
1350                 }
1351         }
1352         
1353         /* setting PET flag only if property exist in operator. Otherwise, assume it's not supported */
1354         if (op && (prop = RNA_struct_find_property(op->ptr, "proportional"))) {
1355                 if (RNA_property_is_set(op->ptr, prop)) {
1356                         t->flag |= initTransInfo_edit_pet_to_flag(RNA_property_enum_get(op->ptr, prop));
1357                 }
1358                 else {
1359                         /* use settings from scene only if modal */
1360                         if (t->flag & T_MODAL) {
1361                                 if ((t->options & CTX_NO_PET) == 0) {
1362                                         if (t->spacetype == SPACE_IPO) {
1363                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_fcurve);
1364                                         }
1365                                         else if (t->spacetype == SPACE_ACTION) {
1366                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_action);
1367                                         }
1368                                         else if (t->obedit) {
1369                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1370                                         }
1371                                         else if (t->options & CTX_GPENCIL_STROKES) {
1372                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1373                                         }
1374                                         else if (t->options & CTX_MASK) {
1375                                                 if (ts->proportional_mask) {
1376                                                         t->flag |= T_PROP_EDIT;
1377
1378                                                         if (ts->proportional == PROP_EDIT_CONNECTED) {
1379                                                                 t->flag |= T_PROP_CONNECTED;
1380                                                         }
1381                                                 }
1382                                         }
1383                                         else if (t->obedit == NULL && ts->proportional_objects) {
1384                                                 t->flag |= T_PROP_EDIT;
1385                                         }
1386                                 }
1387                         }
1388                 }
1389                 
1390                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_size")) &&
1391                            RNA_property_is_set(op->ptr, prop)))
1392                 {
1393                         t->prop_size = RNA_property_float_get(op->ptr, prop);
1394                 }
1395                 else {
1396                         t->prop_size = ts->proportional_size;
1397                 }
1398                 
1399                 
1400                 /* TRANSFORM_FIX_ME rna restrictions */
1401                 if (t->prop_size <= 0.00001f) {
1402                         printf("Proportional size (%f) under 0.00001, resetting to 1!\n", t->prop_size);
1403                         t->prop_size = 1.0f;
1404                 }
1405                 
1406                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_edit_falloff")) &&
1407                            RNA_property_is_set(op->ptr, prop)))
1408                 {
1409                         t->prop_mode = RNA_property_enum_get(op->ptr, prop);
1410                 }
1411                 else {
1412                         t->prop_mode = ts->prop_mode;
1413                 }
1414         }
1415         else { /* add not pet option to context when not available */
1416                 t->options |= CTX_NO_PET;
1417         }
1418         
1419         // Mirror is not supported with PET, turn it off.
1420 #if 0
1421         if (t->flag & T_PROP_EDIT) {
1422                 t->flag &= ~T_MIRROR;
1423         }
1424 #endif
1425
1426         setTransformViewAspect(t, t->aspect);
1427         setTransformViewMatrices(t);
1428         initNumInput(&t->num);
1429 }
1430
1431 /* Here I would suggest only TransInfo related issues, like free data & reset vars. Not redraws */
1432 void postTrans(bContext *C, TransInfo *t)
1433 {
1434         TransData *td;
1435         
1436         if (t->draw_handle_view)
1437                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_view);
1438         if (t->draw_handle_apply)
1439                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_apply);
1440         if (t->draw_handle_pixel)
1441                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_pixel);
1442         if (t->draw_handle_cursor)
1443                 WM_paint_cursor_end(CTX_wm_manager(C), t->draw_handle_cursor);
1444
1445         /* Free all custom-data */
1446         {
1447                 TransCustomData *custom_data = &t->custom.first_elem;
1448                 for (int i = 0; i < TRANS_CUSTOM_DATA_ELEM_MAX; i++, custom_data++) {
1449                         if (custom_data->free_cb) {
1450                                 /* Can take over freeing t->data and data2d etc... */
1451                                 custom_data->free_cb(t, custom_data);
1452                                 BLI_assert(custom_data->data == NULL);
1453                         }
1454                         else if ((custom_data->data != NULL) && custom_data->use_free) {
1455                                 MEM_freeN(custom_data->data);
1456                                 custom_data->data = NULL;
1457                         }
1458                 }
1459         }
1460
1461         /* postTrans can be called when nothing is selected, so data is NULL already */
1462         if (t->data) {
1463                 
1464                 /* free data malloced per trans-data */
1465                 if ((t->obedit && ELEM(t->obedit->type, OB_CURVE, OB_SURF)) ||
1466                     (t->spacetype == SPACE_IPO))
1467                 {
1468                         int a;
1469                         for (a = 0, td = t->data; a < t->total; a++, td++) {
1470                                 if (td->flag & TD_BEZTRIPLE) {
1471                                         MEM_freeN(td->hdata);
1472                                 }
1473                         }
1474                 }
1475                 MEM_freeN(t->data);
1476         }
1477         
1478         BLI_freelistN(&t->tsnap.points);
1479
1480         if (t->ext) MEM_freeN(t->ext);
1481         if (t->data2d) {
1482                 MEM_freeN(t->data2d);
1483                 t->data2d = NULL;
1484         }
1485         
1486         if (t->spacetype == SPACE_IMAGE) {
1487                 if (t->options & (CTX_MASK | CTX_PAINT_CURVE)) {
1488                         /* pass */
1489                 }
1490                 else {
1491                         SpaceImage *sima = t->sa->spacedata.first;
1492                         if (sima->flag & SI_LIVE_UNWRAP)
1493                                 ED_uvedit_live_unwrap_end(t->state == TRANS_CANCEL);
1494                 }
1495         }
1496         else if (t->spacetype == SPACE_VIEW3D) {
1497                 View3D *v3d = t->sa->spacedata.first;
1498                 /* restore manipulator */
1499                 if (t->flag & T_MODAL) {
1500                         v3d->twtype = t->twtype;
1501                 }
1502         }
1503         
1504         if (t->mouse.data) {
1505                 MEM_freeN(t->mouse.data);
1506         }
1507
1508         freeSnapping(t);
1509 }
1510
1511 void applyTransObjects(TransInfo *t)
1512 {
1513         TransData *td;
1514         
1515         for (td = t->data; td < t->data + t->total; td++) {
1516                 copy_v3_v3(td->iloc, td->loc);
1517                 if (td->ext->rot) {
1518                         copy_v3_v3(td->ext->irot, td->ext->rot);
1519                 }
1520                 if (td->ext->size) {
1521                         copy_v3_v3(td->ext->isize, td->ext->size);
1522                 }
1523         }
1524         recalcData(t);
1525 }
1526
1527 static void restoreElement(TransData *td)
1528 {
1529         /* TransData for crease has no loc */
1530         if (td->loc) {
1531                 copy_v3_v3(td->loc, td->iloc);
1532         }
1533         if (td->val) {
1534                 *td->val = td->ival;
1535         }
1536
1537         if (td->ext && (td->flag & TD_NO_EXT) == 0) {
1538                 if (td->ext->rot) {
1539                         copy_v3_v3(td->ext->rot, td->ext->irot);
1540                 }
1541                 if (td->ext->rotAngle) {
1542                         *td->ext->rotAngle = td->ext->irotAngle;
1543                 }
1544                 if (td->ext->rotAxis) {
1545                         copy_v3_v3(td->ext->rotAxis, td->ext->irotAxis);
1546                 }
1547                 /* XXX, drotAngle & drotAxis not used yet */
1548                 if (td->ext->size) {
1549                         copy_v3_v3(td->ext->size, td->ext->isize);
1550                 }
1551                 if (td->ext->quat) {
1552                         copy_qt_qt(td->ext->quat, td->ext->iquat);
1553                 }
1554         }
1555         
1556         if (td->flag & TD_BEZTRIPLE) {
1557                 *(td->hdata->h1) = td->hdata->ih1;
1558                 *(td->hdata->h2) = td->hdata->ih2;
1559         }
1560 }
1561
1562 void restoreTransObjects(TransInfo *t)
1563 {
1564         TransData *td;
1565         TransData2D *td2d;
1566
1567         for (td = t->data; td < t->data + t->total; td++) {
1568                 restoreElement(td);
1569         }
1570         
1571         for (td2d = t->data2d; t->data2d && td2d < t->data2d + t->total; td2d++) {
1572                 if (td2d->h1) {
1573                         td2d->h1[0] = td2d->ih1[0];
1574                         td2d->h1[1] = td2d->ih1[1];
1575                 }
1576                 if (td2d->h2) {
1577                         td2d->h2[0] = td2d->ih2[0];
1578                         td2d->h2[1] = td2d->ih2[1];
1579                 }
1580         }
1581
1582         unit_m3(t->mat);
1583         
1584         recalcData(t);
1585 }
1586
1587 void calculateCenter2D(TransInfo *t)
1588 {
1589         BLI_assert(!is_zero_v3(t->aspect));
1590
1591         if (t->flag & (T_EDIT | T_POSE)) {
1592                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1593                 float vec[3];
1594                 
1595                 copy_v3_v3(vec, t->center);
1596                 mul_m4_v3(ob->obmat, vec);
1597                 projectFloatView(t, vec, t->center2d);
1598         }
1599         else {
1600                 projectFloatView(t, t->center, t->center2d);
1601         }
1602 }
1603
1604 void calculateCenterGlobal(
1605         TransInfo *t, const float center_local[3],
1606         float r_center_global[3])
1607 {
1608         /* setting constraint center */
1609         /* note, init functions may over-ride t->center */
1610         if (t->flag & (T_EDIT | T_POSE)) {
1611                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1612                 mul_v3_m4v3(r_center_global, ob->obmat, center_local);
1613         }
1614         else {
1615                 copy_v3_v3(r_center_global, center_local);
1616         }
1617 }
1618
1619 void calculateCenterCursor(TransInfo *t, float r_center[3])
1620 {
1621         const float *cursor;
1622         
1623         cursor = ED_view3d_cursor3d_get(t->scene, t->view);
1624         copy_v3_v3(r_center, cursor);
1625         
1626         /* If edit or pose mode, move cursor in local space */
1627         if (t->flag & (T_EDIT | T_POSE)) {
1628                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1629                 float mat[3][3], imat[3][3];
1630                 
1631                 sub_v3_v3v3(r_center, r_center, ob->obmat[3]);
1632                 copy_m3_m4(mat, ob->obmat);
1633                 invert_m3_m3(imat, mat);
1634                 mul_m3_v3(imat, r_center);
1635         }
1636         else if (t->options & CTX_PAINT_CURVE) {
1637                 if (ED_view3d_project_float_global(t->ar, cursor, r_center, V3D_PROJ_TEST_NOP) != V3D_PROJ_RET_OK) {
1638                         r_center[0] = t->ar->winx / 2.0f;
1639                         r_center[1] = t->ar->winy / 2.0f;
1640                 }
1641                 r_center[2] = 0.0f;
1642         }
1643 }
1644
1645 void calculateCenterCursor2D(TransInfo *t, float r_center[2])
1646 {
1647         const float *cursor = NULL;
1648         
1649         if (t->spacetype == SPACE_IMAGE) {
1650                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1651                 cursor = sima->cursor;
1652         }
1653         else if (t->spacetype == SPACE_CLIP) {
1654                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1655                 cursor = space_clip->cursor;
1656         }
1657
1658         if (cursor) {
1659                 if (t->options & CTX_MASK) {
1660                         float co[2];
1661
1662                         if (t->spacetype == SPACE_IMAGE) {
1663                                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1664                                 BKE_mask_coord_from_image(sima->image, &sima->iuser, co, cursor);
1665                         }
1666                         else if (t->spacetype == SPACE_CLIP) {
1667                                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1668                                 BKE_mask_coord_from_movieclip(space_clip->clip, &space_clip->user, co, cursor);
1669                         }
1670                         else {
1671                                 BLI_assert(!"Shall not happen");
1672                         }
1673
1674                         r_center[0] = co[0] * t->aspect[0];
1675                         r_center[1] = co[1] * t->aspect[1];
1676                 }
1677                 else if (t->options & CTX_PAINT_CURVE) {
1678                         if (t->spacetype == SPACE_IMAGE) {
1679                                 r_center[0] = UI_view2d_view_to_region_x(&t->ar->v2d, cursor[0]);
1680                                 r_center[1] = UI_view2d_view_to_region_y(&t->ar->v2d, cursor[1]);
1681                         }
1682                 }
1683                 else {
1684                         r_center[0] = cursor[0] * t->aspect[0];
1685                         r_center[1] = cursor[1] * t->aspect[1];
1686                 }
1687         }
1688 }
1689
1690 void calculateCenterCursorGraph2D(TransInfo *t, float r_center[2])
1691 {
1692         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
1693         Scene *scene = t->scene;
1694         
1695         /* cursor is combination of current frame, and graph-editor cursor value */
1696         if (sipo->mode == SIPO_MODE_DRIVERS) {
1697                 r_center[0] = sipo->cursorTime;
1698                 r_center[1] = sipo->cursorVal;
1699         }
1700         else {
1701                 r_center[0] = (float)(scene->r.cfra);
1702                 r_center[1] = sipo->cursorVal;
1703         }
1704 }
1705
1706 void calculateCenterMedian(TransInfo *t, float r_center[3])
1707 {
1708         float partial[3] = {0.0f, 0.0f, 0.0f};
1709         int total = 0;
1710         int i;
1711         
1712         for (i = 0; i < t->total; i++) {
1713                 if (t->data[i].flag & TD_SELECTED) {
1714                         if (!(t->data[i].flag & TD_NOCENTER)) {
1715                                 add_v3_v3(partial, t->data[i].center);
1716                                 total++;
1717                         }
1718                 }
1719         }
1720         if (total) {
1721                 mul_v3_fl(partial, 1.0f / (float)total);
1722         }
1723         copy_v3_v3(r_center, partial);
1724 }
1725
1726 void calculateCenterBound(TransInfo *t, float r_center[3])
1727 {
1728         float max[3];
1729         float min[3];
1730         int i;
1731         for (i = 0; i < t->total; i++) {
1732                 if (i) {
1733                         if (t->data[i].flag & TD_SELECTED) {
1734                                 if (!(t->data[i].flag & TD_NOCENTER))
1735                                         minmax_v3v3_v3(min, max, t->data[i].center);
1736                         }
1737                 }
1738                 else {
1739                         copy_v3_v3(max, t->data[i].center);
1740                         copy_v3_v3(min, t->data[i].center);
1741                 }
1742         }
1743         mid_v3_v3v3(r_center, min, max);
1744 }
1745
1746 /**
1747  * \param select_only only get active center from data being transformed.
1748  */
1749 bool calculateCenterActive(TransInfo *t, bool select_only, float r_center[3])
1750 {
1751         bool ok = false;
1752
1753         if (t->obedit) {
1754                 if (ED_object_editmode_calc_active_center(t->obedit, select_only, r_center)) {
1755                         ok = true;
1756                 }
1757         }
1758         else if (t->flag & T_POSE) {
1759                 Scene *scene = t->scene;
1760                 Object *ob = OBACT;
1761                 if (ob) {
1762                         bPoseChannel *pchan = BKE_pose_channel_active(ob);
1763                         if (pchan && (!select_only || (pchan->bone->flag & BONE_SELECTED))) {
1764                                 copy_v3_v3(r_center, pchan->pose_head);
1765                                 ok = true;
1766                         }
1767                 }
1768         }
1769         else if (t->options & CTX_PAINT_CURVE) {
1770                 Paint *p = BKE_paint_get_active(t->scene);
1771                 Brush *br = p->brush;
1772                 PaintCurve *pc = br->paint_curve;
1773                 copy_v3_v3(r_center, pc->points[pc->add_index - 1].bez.vec[1]);
1774                 r_center[2] = 0.0f;
1775                 ok = true;
1776         }
1777         else {
1778                 /* object mode */
1779                 Scene *scene = t->scene;
1780                 Object *ob = OBACT;
1781                 if (ob && (!select_only || (ob->flag & SELECT))) {
1782                         copy_v3_v3(r_center, ob->obmat[3]);
1783                         ok = true;
1784                 }
1785         }
1786
1787         return ok;
1788 }
1789
1790 static void calculateCenter_FromAround(TransInfo *t, int around, float r_center[3])
1791 {
1792         switch (around) {
1793                 case V3D_AROUND_CENTER_BOUNDS:
1794                         calculateCenterBound(t, r_center);
1795                         break;
1796                 case V3D_AROUND_CENTER_MEAN:
1797                         calculateCenterMedian(t, r_center);
1798                         break;
1799                 case V3D_AROUND_CURSOR:
1800                         if (ELEM(t->spacetype, SPACE_IMAGE, SPACE_CLIP))
1801                                 calculateCenterCursor2D(t, r_center);
1802                         else if (t->spacetype == SPACE_IPO)
1803                                 calculateCenterCursorGraph2D(t, r_center);
1804                         else
1805                                 calculateCenterCursor(t, r_center);
1806                         break;
1807                 case V3D_AROUND_LOCAL_ORIGINS:
1808                         /* Individual element center uses median center for helpline and such */
1809                         calculateCenterMedian(t, r_center);
1810                         break;
1811                 case V3D_AROUND_ACTIVE:
1812                 {
1813                         if (calculateCenterActive(t, false, r_center)) {
1814                                 /* pass */
1815                         }
1816                         else {
1817                                 /* fallback */
1818                                 calculateCenterMedian(t, r_center);
1819                         }
1820                         break;
1821                 }
1822         }
1823 }
1824
1825 void calculateCenter(TransInfo *t)
1826 {
1827         calculateCenter_FromAround(t, t->around, t->center);
1828         calculateCenterGlobal(t, t->center, t->center_global);
1829
1830         /* avoid calculating again */
1831         {
1832                 TransCenterData *cd = &t->center_cache[t->around];
1833                 copy_v3_v3(cd->local, t->center);
1834                 copy_v3_v3(cd->global, t->center_global);
1835                 cd->is_set = true;
1836         }
1837
1838         calculateCenter2D(t);
1839
1840         /* for panning from cameraview */
1841         if (t->flag & T_OBJECT) {
1842                 if (t->spacetype == SPACE_VIEW3D && t->ar && t->ar->regiontype == RGN_TYPE_WINDOW) {
1843                         
1844                         if (t->flag & T_CAMERA) {
1845                                 float axis[3];
1846                                 /* persinv is nasty, use viewinv instead, always right */
1847                                 copy_v3_v3(axis, t->viewinv[2]);
1848                                 normalize_v3(axis);
1849                                 
1850                                 /* 6.0 = 6 grid units */
1851                                 axis[0] = t->center[0] - 6.0f * axis[0];
1852                                 axis[1] = t->center[1] - 6.0f * axis[1];
1853                                 axis[2] = t->center[2] - 6.0f * axis[2];
1854                                 
1855                                 projectFloatView(t, axis, t->center2d);
1856                                 
1857                                 /* rotate only needs correct 2d center, grab needs ED_view3d_calc_zfac() value */
1858                                 if (t->mode == TFM_TRANSLATION) {
1859                                         copy_v3_v3(t->center, axis);
1860                                         copy_v3_v3(t->center_global, t->center);
1861                                 }
1862                         }
1863                 }
1864         }
1865         
1866         if (t->spacetype == SPACE_VIEW3D) {
1867                 /* ED_view3d_calc_zfac() defines a factor for perspective depth correction, used in ED_view3d_win_to_delta() */
1868                 float vec[3];
1869                 if (t->flag & (T_EDIT | T_POSE)) {
1870                         Object *ob = t->obedit ? t->obedit : t->poseobj;
1871                         mul_v3_m4v3(vec, ob->obmat, t->center);
1872                 }
1873                 else {
1874                         copy_v3_v3(vec, t->center);
1875                 }
1876
1877                 /* zfac is only used convertViewVec only in cases operator was invoked in RGN_TYPE_WINDOW
1878                  * and never used in other cases.
1879                  *
1880                  * We need special case here as well, since ED_view3d_calc_zfac will crash when called
1881                  * for a region different from RGN_TYPE_WINDOW.
1882                  */
1883                 if (t->ar->regiontype == RGN_TYPE_WINDOW) {
1884                         t->zfac = ED_view3d_calc_zfac(t->ar->regiondata, vec, NULL);
1885                 }
1886                 else {
1887                         t->zfac = 0.0f;
1888                 }
1889         }
1890 }
1891
1892 BLI_STATIC_ASSERT(ARRAY_SIZE(((TransInfo *)NULL)->center_cache) == (V3D_AROUND_ACTIVE + 1), "test size");
1893
1894 /**
1895  * Lazy initialize transform center data, when we need to access center values from other types.
1896  */
1897 const TransCenterData *transformCenter_from_type(TransInfo *t, int around)
1898 {
1899         BLI_assert(around <= V3D_AROUND_ACTIVE);
1900         TransCenterData *cd = &t->center_cache[around];
1901         if (cd->is_set == false) {
1902                 calculateCenter_FromAround(t, around, cd->local);
1903                 calculateCenterGlobal(t, cd->local, cd->global);
1904                 cd->is_set = true;
1905         }
1906         return cd;
1907 }
1908
1909 void calculatePropRatio(TransInfo *t)
1910 {
1911         TransData *td = t->data;
1912         int i;
1913         float dist;
1914         const bool connected = (t->flag & T_PROP_CONNECTED) != 0;
1915
1916         t->proptext[0] = '\0';
1917
1918         if (t->flag & T_PROP_EDIT) {
1919                 const char *pet_id = NULL;
1920                 for (i = 0; i < t->total; i++, td++) {
1921                         if (td->flag & TD_SELECTED) {
1922                                 td->factor = 1.0f;
1923                         }
1924                         else if (t->flag & T_MIRROR && td->loc[0] * t->mirror < -0.00001f) {
1925                                 td->flag |= TD_SKIP;
1926                                 td->factor = 0.0f;
1927                                 restoreElement(td);
1928                         }
1929                         else if ((connected && (td->flag & TD_NOTCONNECTED || td->dist > t->prop_size)) ||
1930                                  (connected == 0 && td->rdist > t->prop_size))
1931                         {
1932                                 /*
1933                                  * The elements are sorted according to their dist member in the array,
1934                                  * that means we can stop when it finds one element outside of the propsize.
1935                                  * do not set 'td->flag |= TD_NOACTION', the prop circle is being changed.
1936                                  */
1937                                 
1938                                 td->factor = 0.0f;
1939                                 restoreElement(td);
1940                         }
1941                         else {
1942                                 /* Use rdist for falloff calculations, it is the real distance */
1943                                 td->flag &= ~TD_NOACTION;
1944                                 
1945                                 if (connected)
1946                                         dist = (t->prop_size - td->dist) / t->prop_size;
1947                                 else
1948                                         dist = (t->prop_size - td->rdist) / t->prop_size;
1949
1950                                 /*
1951                                  * Clamp to positive numbers.
1952                                  * Certain corner cases with connectivity and individual centers
1953                                  * can give values of rdist larger than propsize.
1954                                  */
1955                                 if (dist < 0.0f)
1956                                         dist = 0.0f;
1957                                 
1958                                 switch (t->prop_mode) {
1959                                         case PROP_SHARP:
1960                                                 td->factor = dist * dist;
1961                                                 break;
1962                                         case PROP_SMOOTH:
1963                                                 td->factor = 3.0f * dist * dist - 2.0f * dist * dist * dist;
1964                                                 break;
1965                                         case PROP_ROOT:
1966                                                 td->factor = sqrtf(dist);
1967                                                 break;
1968                                         case PROP_LIN:
1969                                                 td->factor = dist;
1970                                                 break;
1971                                         case PROP_CONST:
1972                                                 td->factor = 1.0f;
1973                                                 break;
1974                                         case PROP_SPHERE:
1975                                                 td->factor = sqrtf(2 * dist - dist * dist);
1976                                                 break;
1977                                         case PROP_RANDOM:
1978                                                 td->factor = BLI_frand() * dist;
1979                                                 break;
1980                                         case PROP_INVSQUARE:
1981                                                 td->factor = dist * (2.0f - dist);
1982                                                 break;
1983                                         default:
1984                                                 td->factor = 1;
1985                                                 break;
1986                                 }
1987                         }
1988                 }
1989                 switch (t->prop_mode) {
1990                         case PROP_SHARP:
1991                                 pet_id = N_("(Sharp)");
1992                                 break;
1993                         case PROP_SMOOTH:
1994                                 pet_id = N_("(Smooth)");
1995                                 break;
1996                         case PROP_ROOT:
1997                                 pet_id = N_("(Root)");
1998                                 break;
1999                         case PROP_LIN:
2000                                 pet_id = N_("(Linear)");
2001                                 break;
2002                         case PROP_CONST:
2003                                 pet_id = N_("(Constant)");
2004                                 break;
2005                         case PROP_SPHERE:
2006                                 pet_id = N_("(Sphere)");
2007                                 break;
2008                         case PROP_RANDOM:
2009                                 pet_id = N_("(Random)");
2010                                 break;
2011                         case PROP_INVSQUARE:
2012                                 pet_id = N_("(InvSquare)");
2013                                 break;
2014                         default:
2015                                 break;
2016                 }
2017
2018                 if (pet_id) {
2019                         BLI_strncpy(t->proptext, IFACE_(pet_id), sizeof(t->proptext));
2020                 }
2021         }
2022         else {
2023                 for (i = 0; i < t->total; i++, td++) {
2024                         td->factor = 1.0;
2025                 }
2026         }
2027 }
2028
2029 /**
2030  * Rotate an element, low level code, ignore protected channels.
2031  * (use for objects or pose-bones)
2032  * Similar to #ElementRotation.
2033  */
2034 void transform_data_ext_rotate(TransData *td, float mat[3][3], bool use_drot)
2035 {
2036         float totmat[3][3];
2037         float smat[3][3];
2038         float fmat[3][3];
2039         float obmat[3][3];
2040
2041         float dmat[3][3];  /* delta rotation */
2042         float dmat_inv[3][3];
2043
2044         mul_m3_m3m3(totmat, mat, td->mtx);
2045         mul_m3_m3m3(smat, td->smtx, mat);
2046
2047         /* logic from BKE_object_rot_to_mat3 */
2048         if (use_drot) {
2049                 if (td->ext->rotOrder > 0) {
2050                         eulO_to_mat3(dmat, td->ext->drot, td->ext->rotOrder);
2051                 }
2052                 else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2053 #if 0
2054                         axis_angle_to_mat3(dmat, td->ext->drotAxis, td->ext->drotAngle);
2055 #else
2056                         unit_m3(dmat);
2057 #endif
2058                 }
2059                 else {
2060                         float tquat[4];
2061                         normalize_qt_qt(tquat, td->ext->dquat);
2062                         quat_to_mat3(dmat, tquat);
2063                 }
2064
2065                 invert_m3_m3(dmat_inv, dmat);
2066         }
2067
2068
2069         if (td->ext->rotOrder == ROT_MODE_QUAT) {
2070                 float quat[4];
2071
2072                 /* calculate the total rotatation */
2073                 quat_to_mat3(obmat, td->ext->iquat);
2074                 if (use_drot) {
2075                         mul_m3_m3m3(obmat, dmat, obmat);
2076                 }
2077
2078                 /* mat = transform, obmat = object rotation */
2079                 mul_m3_m3m3(fmat, smat, obmat);
2080
2081                 if (use_drot) {
2082                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2083                 }
2084
2085                 mat3_to_quat(quat, fmat);
2086
2087                 /* apply */
2088                 copy_qt_qt(td->ext->quat, quat);
2089         }
2090         else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2091                 float axis[3], angle;
2092
2093                 /* calculate the total rotatation */
2094                 axis_angle_to_mat3(obmat, td->ext->irotAxis, td->ext->irotAngle);
2095                 if (use_drot) {
2096                         mul_m3_m3m3(obmat, dmat, obmat);
2097                 }
2098
2099                 /* mat = transform, obmat = object rotation */
2100                 mul_m3_m3m3(fmat, smat, obmat);
2101
2102                 if (use_drot) {
2103                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2104                 }
2105
2106                 mat3_to_axis_angle(axis, &angle, fmat);
2107
2108                 /* apply */
2109                 copy_v3_v3(td->ext->rotAxis, axis);
2110                 *td->ext->rotAngle = angle;
2111         }
2112         else {
2113                 float eul[3];
2114
2115                 /* calculate the total rotatation */
2116                 eulO_to_mat3(obmat, td->ext->irot, td->ext->rotOrder);
2117                 if (use_drot) {
2118                         mul_m3_m3m3(obmat, dmat, obmat);
2119                 }
2120
2121                 /* mat = transform, obmat = object rotation */
2122                 mul_m3_m3m3(fmat, smat, obmat);
2123
2124                 if (use_drot) {
2125                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2126                 }
2127
2128                 mat3_to_compatible_eulO(eul, td->ext->rot, td->ext->rotOrder, fmat);
2129
2130                 /* apply */
2131                 copy_v3_v3(td->ext->rot, eul);
2132         }
2133 }
2134