Cleanup: use normalize_v#_length
[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_particle.h"
95 #include "ED_screen_types.h"
96 #include "ED_space_api.h"
97 #include "ED_uvedit.h"
98 #include "ED_view3d.h"
99 #include "ED_curve.h" /* for curve_editnurbs */
100 #include "ED_clip.h"
101 #include "ED_screen.h"
102
103 #include "WM_types.h"
104 #include "WM_api.h"
105
106 #include "UI_resources.h"
107 #include "UI_view2d.h"
108
109 #include "transform.h"
110
111 /* ************************** Functions *************************** */
112
113 void getViewVector(TransInfo *t, float coord[3], float vec[3])
114 {
115         if (t->persp != RV3D_ORTHO) {
116                 sub_v3_v3v3(vec, coord, t->viewinv[3]);
117         }
118         else {
119                 copy_v3_v3(vec, t->viewinv[2]);
120         }
121         normalize_v3(vec);
122 }
123
124 /* ************************** GENERICS **************************** */
125
126
127 static void clipMirrorModifier(TransInfo *t, Object *ob)
128 {
129         ModifierData *md = ob->modifiers.first;
130         float tolerance[3] = {0.0f, 0.0f, 0.0f};
131         int axis = 0;
132         
133         for (; md; md = md->next) {
134                 if ((md->type == eModifierType_Mirror) && (md->mode & eModifierMode_Realtime)) {
135                         MirrorModifierData *mmd = (MirrorModifierData *) md;
136                         
137                         if (mmd->flag & MOD_MIR_CLIPPING) {
138                                 axis = 0;
139                                 if (mmd->flag & MOD_MIR_AXIS_X) {
140                                         axis |= 1;
141                                         tolerance[0] = mmd->tolerance;
142                                 }
143                                 if (mmd->flag & MOD_MIR_AXIS_Y) {
144                                         axis |= 2;
145                                         tolerance[1] = mmd->tolerance;
146                                 }
147                                 if (mmd->flag & MOD_MIR_AXIS_Z) {
148                                         axis |= 4;
149                                         tolerance[2] = mmd->tolerance;
150                                 }
151                                 if (axis) {
152                                         float mtx[4][4], imtx[4][4];
153                                         int i;
154                                         TransData *td = t->data;
155                                         
156                                         if (mmd->mirror_ob) {
157                                                 float obinv[4][4];
158                                                 
159                                                 invert_m4_m4(obinv, mmd->mirror_ob->obmat);
160                                                 mul_m4_m4m4(mtx, obinv, ob->obmat);
161                                                 invert_m4_m4(imtx, mtx);
162                                         }
163                                         
164                                         for (i = 0; i < t->total; i++, td++) {
165                                                 int clip;
166                                                 float loc[3], iloc[3];
167                                                 
168                                                 if (td->flag & TD_NOACTION)
169                                                         break;
170                                                 if (td->loc == NULL)
171                                                         break;
172                                                 
173                                                 if (td->flag & TD_SKIP)
174                                                         continue;
175                                                 
176                                                 copy_v3_v3(loc,  td->loc);
177                                                 copy_v3_v3(iloc, td->iloc);
178                                                 
179                                                 if (mmd->mirror_ob) {
180                                                         mul_m4_v3(mtx, loc);
181                                                         mul_m4_v3(mtx, iloc);
182                                                 }
183                                                 
184                                                 clip = 0;
185                                                 if (axis & 1) {
186                                                         if (fabsf(iloc[0]) <= tolerance[0] ||
187                                                             loc[0] * iloc[0] < 0.0f)
188                                                         {
189                                                                 loc[0] = 0.0f;
190                                                                 clip = 1;
191                                                         }
192                                                 }
193                                                 
194                                                 if (axis & 2) {
195                                                         if (fabsf(iloc[1]) <= tolerance[1] ||
196                                                             loc[1] * iloc[1] < 0.0f)
197                                                         {
198                                                                 loc[1] = 0.0f;
199                                                                 clip = 1;
200                                                         }
201                                                 }
202                                                 if (axis & 4) {
203                                                         if (fabsf(iloc[2]) <= tolerance[2] ||
204                                                             loc[2] * iloc[2] < 0.0f)
205                                                         {
206                                                                 loc[2] = 0.0f;
207                                                                 clip = 1;
208                                                         }
209                                                 }
210                                                 if (clip) {
211                                                         if (mmd->mirror_ob) {
212                                                                 mul_m4_v3(imtx, loc);
213                                                         }
214                                                         copy_v3_v3(td->loc, loc);
215                                                 }
216                                         }
217                                 }
218                                 
219                         }
220                 }
221         }
222 }
223
224 /* assumes obedit set to mesh object */
225 static void editbmesh_apply_to_mirror(TransInfo *t)
226 {
227         TransData *td = t->data;
228         BMVert *eve;
229         int i;
230         
231         for (i = 0; i < t->total; i++, td++) {
232                 if (td->flag & TD_NOACTION)
233                         break;
234                 if (td->loc == NULL)
235                         break;
236                 if (td->flag & TD_SKIP)
237                         continue;
238                 
239                 eve = td->extra;
240                 if (eve) {
241                         eve->co[0] = -td->loc[0];
242                         eve->co[1] = td->loc[1];
243                         eve->co[2] = td->loc[2];
244                 }
245                 
246                 if (td->flag & TD_MIRROR_EDGE) {
247                         td->loc[0] = 0;
248                 }
249         }
250 }
251
252 /* for the realtime animation recording feature, handle overlapping data */
253 static void animrecord_check_state(Scene *scene, ID *id, wmTimer *animtimer)
254 {
255         ScreenAnimData *sad = (animtimer) ? animtimer->customdata : NULL;
256         
257         /* sanity checks */
258         if (ELEM(NULL, scene, id, sad))
259                 return;
260         
261         /* check if we need a new strip if:
262          *  - if animtimer is running
263          *      - we're not only keying for available channels
264          *      - the option to add new actions for each round is not enabled
265          */
266         if (IS_AUTOKEY_FLAG(scene, INSERTAVAIL) == 0 && (scene->toolsettings->autokey_flag & ANIMRECORD_FLAG_WITHNLA)) {
267                 /* if playback has just looped around, we need to add a new NLA track+strip to allow a clean pass to occur */
268                 if ((sad) && (sad->flag & ANIMPLAY_FLAG_JUMPED)) {
269                         AnimData *adt = BKE_animdata_from_id(id);
270                         
271                         /* perform push-down manually with some differences 
272                          * NOTE: BKE_nla_action_pushdown() sync warning...
273                          */
274                         if ((adt->action) && !(adt->flag & ADT_NLA_EDIT_ON)) {
275                                 float astart, aend;
276                                 
277                                 /* only push down if action is more than 1-2 frames long */
278                                 calc_action_range(adt->action, &astart, &aend, 1);
279                                 if (aend > astart + 2.0f) {
280                                         NlaStrip *strip = add_nlastrip_to_stack(adt, adt->action);
281                                         
282                                         /* clear reference to action now that we've pushed it onto the stack */
283                                         id_us_min(&adt->action->id);
284                                         adt->action = NULL;
285                                         
286                                         /* adjust blending + extend so that they will behave correctly */
287                                         strip->extendmode = NLASTRIP_EXTEND_NOTHING;
288                                         strip->flag &= ~(NLASTRIP_FLAG_AUTO_BLENDS | NLASTRIP_FLAG_SELECT | NLASTRIP_FLAG_ACTIVE);
289                                         
290                                         /* also, adjust the AnimData's action extend mode to be on 
291                                          * 'nothing' so that previous result still play 
292                                          */
293                                         adt->act_extendmode = NLASTRIP_EXTEND_NOTHING;
294                                 }
295                         }
296                 }
297         }
298 }
299
300 static bool fcu_test_selected(FCurve *fcu)
301 {
302         BezTriple *bezt = fcu->bezt;
303         unsigned int i;
304
305         if (bezt == NULL) /* ignore baked */
306                 return 0;
307
308         for (i = 0; i < fcu->totvert; i++, bezt++) {
309                 if (BEZT_ISSEL_ANY(bezt)) return 1;
310         }
311
312         return 0;
313 }
314
315 /* helper for recalcData() - for Action Editor transforms */
316 static void recalcData_actedit(TransInfo *t)
317 {
318         Scene *scene = t->scene;
319         SpaceAction *saction = (SpaceAction *)t->sa->spacedata.first;
320         
321         bAnimContext ac = {NULL};
322         ListBase anim_data = {NULL, NULL};
323         bAnimListElem *ale;
324         int filter;
325         
326         /* initialize relevant anim-context 'context' data from TransInfo data */
327         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
328         ac.scene = t->scene;
329         ac.obact = OBACT;
330         ac.sa = t->sa;
331         ac.ar = t->ar;
332         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
333         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
334         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
335         
336         ANIM_animdata_context_getdata(&ac);
337         
338         /* perform flush */
339         if (ELEM(ac.datatype, ANIMCONT_GPENCIL, ANIMCONT_MASK)) {
340                 /* flush transform values back to actual coordinates */
341                 flushTransIntFrameActionData(t);
342         }
343         else {
344                 /* get animdata blocks visible in editor, assuming that these will be the ones where things changed */
345                 filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_ANIMDATA);
346                 ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
347                 
348                 /* just tag these animdata-blocks to recalc, assuming that some data there changed 
349                  * BUT only do this if realtime updates are enabled
350                  */
351                 if ((saction->flag & SACTION_NOREALTIMEUPDATES) == 0) {
352                         for (ale = anim_data.first; ale; ale = ale->next) {
353                                 /* set refresh tags for objects using this animation */
354                                 ANIM_list_elem_update(t->scene, ale);
355                         }
356                 }
357                 
358                 /* now free temp channels */
359                 ANIM_animdata_freelist(&anim_data);
360         }
361 }
362 /* helper for recalcData() - for Graph Editor transforms */
363 static void recalcData_graphedit(TransInfo *t)
364 {
365         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
366         Scene *scene;
367         
368         ListBase anim_data = {NULL, NULL};
369         bAnimContext ac = {NULL};
370         int filter;
371         
372         bAnimListElem *ale;
373         int dosort = 0;
374
375         /* initialize relevant anim-context 'context' data from TransInfo data */
376         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
377         scene = ac.scene = t->scene;
378         ac.obact = OBACT;
379         ac.sa = t->sa;
380         ac.ar = t->ar;
381         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
382         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
383         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
384         
385         ANIM_animdata_context_getdata(&ac);
386         
387         /* do the flush first */
388         flushTransGraphData(t);
389         
390         /* get curves to check if a re-sort is needed */
391         filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_FOREDIT | ANIMFILTER_CURVE_VISIBLE);
392         ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
393         
394         /* now test if there is a need to re-sort */
395         for (ale = anim_data.first; ale; ale = ale->next) {
396                 FCurve *fcu = (FCurve *)ale->key_data;
397                 
398                 /* ignore FC-Curves without any selected verts */
399                 if (!fcu_test_selected(fcu))
400                         continue;
401
402                 /* watch it: if the time is wrong: do not correct handles yet */
403                 if (test_time_fcurve(fcu))
404                         dosort++;
405                 else
406                         calchandles_fcurve(fcu);
407                 
408                 /* set refresh tags for objects using this animation,
409                  * BUT only if realtime updates are enabled  
410                  */
411                 if ((sipo->flag & SIPO_NOREALTIMEUPDATES) == 0)
412                         ANIM_list_elem_update(t->scene, ale);
413         }
414         
415         /* do resort and other updates? */
416         if (dosort) remake_graph_transdata(t, &anim_data);
417         
418         /* now free temp channels */
419         ANIM_animdata_freelist(&anim_data);
420 }
421
422 /* helper for recalcData() - for NLA Editor transforms */
423 static void recalcData_nla(TransInfo *t)
424 {
425         TransDataNla *tdn = t->custom.type.data;
426         SpaceNla *snla = (SpaceNla *)t->sa->spacedata.first;
427         Scene *scene = t->scene;
428         double secf = FPS;
429         int i;
430         
431         /* for each strip we've got, perform some additional validation of the values that got set before
432          * using RNA to set the value (which does some special operations when setting these values to make
433          * sure that everything works ok)
434          */
435         for (i = 0; i < t->total; i++, tdn++) {
436                 NlaStrip *strip = tdn->strip;
437                 PointerRNA strip_ptr;
438                 short pExceeded, nExceeded, iter;
439                 int delta_y1, delta_y2;
440                 
441                 /* if this tdn has no handles, that means it is just a dummy that should be skipped */
442                 if (tdn->handle == 0)
443                         continue;
444                 
445                 /* set refresh tags for objects using this animation,
446                  * BUT only if realtime updates are enabled  
447                  */
448                 if ((snla->flag & SNLA_NOREALTIMEUPDATES) == 0)
449                         ANIM_id_update(t->scene, tdn->id);
450                 
451                 /* if canceling transform, just write the values without validating, then move on */
452                 if (t->state == TRANS_CANCEL) {
453                         /* clear the values by directly overwriting the originals, but also need to restore
454                          * endpoints of neighboring transition-strips
455                          */
456                         
457                         /* start */
458                         strip->start = tdn->h1[0];
459                         
460                         if ((strip->prev) && (strip->prev->type == NLASTRIP_TYPE_TRANSITION))
461                                 strip->prev->end = tdn->h1[0];
462                         
463                         /* end */
464                         strip->end = tdn->h2[0];
465                         
466                         if ((strip->next) && (strip->next->type == NLASTRIP_TYPE_TRANSITION))
467                                 strip->next->start = tdn->h2[0];
468                         
469                         /* flush transforms to child strips (since this should be a meta) */
470                         BKE_nlameta_flush_transforms(strip);
471                         
472                         /* restore to original track (if needed) */
473                         if (tdn->oldTrack != tdn->nlt) {
474                                 /* just append to end of list for now, since strips get sorted in special_aftertrans_update() */
475                                 BLI_remlink(&tdn->nlt->strips, strip);
476                                 BLI_addtail(&tdn->oldTrack->strips, strip);
477                         }
478                         
479                         continue;
480                 }
481                 
482                 /* firstly, check if the proposed transform locations would overlap with any neighboring strips
483                  * (barring transitions) which are absolute barriers since they are not being moved
484                  *
485                  * this is done as a iterative procedure (done 5 times max for now)
486                  */
487                 for (iter = 0; iter < 5; iter++) {
488                         pExceeded = ((strip->prev) && (strip->prev->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h1[0] < strip->prev->end));
489                         nExceeded = ((strip->next) && (strip->next->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h2[0] > strip->next->start));
490                         
491                         if ((pExceeded && nExceeded) || (iter == 4)) {
492                                 /* both endpoints exceeded (or iteration ping-pong'd meaning that we need a compromise)
493                                  *      - simply crop strip to fit within the bounds of the strips bounding it
494                                  *      - if there were no neighbors, clear the transforms (make it default to the strip's current values)
495                                  */
496                                 if (strip->prev && strip->next) {
497                                         tdn->h1[0] = strip->prev->end;
498                                         tdn->h2[0] = strip->next->start;
499                                 }
500                                 else {
501                                         tdn->h1[0] = strip->start;
502                                         tdn->h2[0] = strip->end;
503                                 }
504                         }
505                         else if (nExceeded) {
506                                 /* move backwards */
507                                 float offset = tdn->h2[0] - strip->next->start;
508                                 
509                                 tdn->h1[0] -= offset;
510                                 tdn->h2[0] -= offset;
511                         }
512                         else if (pExceeded) {
513                                 /* more forwards */
514                                 float offset = strip->prev->end - tdn->h1[0];
515                                 
516                                 tdn->h1[0] += offset;
517                                 tdn->h2[0] += offset;
518                         }
519                         else /* all is fine and well */
520                                 break;
521                 }
522                 
523                 /* handle auto-snapping
524                  * NOTE: only do this when transform is still running, or we can't restore
525                  */
526                 if (t->state != TRANS_CANCEL) {
527                         switch (snla->autosnap) {
528                                 case SACTSNAP_FRAME: /* snap to nearest frame */
529                                 case SACTSNAP_STEP: /* frame step - this is basically the same, since we don't have any remapping going on */
530                                 {
531                                         tdn->h1[0] = floorf(tdn->h1[0] + 0.5f);
532                                         tdn->h2[0] = floorf(tdn->h2[0] + 0.5f);
533                                         break;
534                                 }
535                                 
536                                 case SACTSNAP_SECOND: /* snap to nearest second */
537                                 case SACTSNAP_TSTEP: /* second step - this is basically the same, since we don't have any remapping going on */
538                                 {
539                                         /* This case behaves differently from the rest, since lengths of strips
540                                          * may not be multiples of a second. If we just naively resize adjust
541                                          * the handles, things may not work correctly. Instead, we only snap
542                                          * the first handle, and move the other to fit.
543                                          *
544                                          * FIXME: we do run into problems here when user attempts to negatively
545                                          *        scale the strip, as it then just compresses down and refuses
546                                          *        to expand out the other end.
547                                          */
548                                         float h1_new = (float)(floor(((double)tdn->h1[0] / secf) + 0.5) * secf);
549                                         float delta  = h1_new - tdn->h1[0];
550                                         
551                                         tdn->h1[0] = h1_new;
552                                         tdn->h2[0] += delta;
553                                         break;
554                                 }
555                                 
556                                 case SACTSNAP_MARKER: /* snap to nearest marker */
557                                 {
558                                         tdn->h1[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h1[0]);
559                                         tdn->h2[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h2[0]);
560                                         break;
561                                 }
562                         }
563                 }
564                 
565                 /* Use RNA to write the values to ensure that constraints on these are obeyed
566                  * (e.g. for transition strips, the values are taken from the neighbors)
567                  * 
568                  * NOTE: we write these twice to avoid truncation errors which can arise when
569                  * moving the strips a large distance using numeric input [#33852] 
570                  */
571                 RNA_pointer_create(NULL, &RNA_NlaStrip, strip, &strip_ptr);
572                 
573                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
574                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
575                 
576                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
577                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
578                 
579                 /* flush transforms to child strips (since this should be a meta) */
580                 BKE_nlameta_flush_transforms(strip);
581                 
582                 
583                 /* now, check if we need to try and move track
584                  *      - we need to calculate both, as only one may have been altered by transform if only 1 handle moved
585                  */
586                 delta_y1 = ((int)tdn->h1[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
587                 delta_y2 = ((int)tdn->h2[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
588                 
589                 if (delta_y1 || delta_y2) {
590                         NlaTrack *track;
591                         int delta = (delta_y2) ? delta_y2 : delta_y1;
592                         int n;
593                         
594                         /* move in the requested direction, checking at each layer if there's space for strip to pass through,
595                          * stopping on the last track available or that we're able to fit in
596                          */
597                         if (delta > 0) {
598                                 for (track = tdn->nlt->next, n = 0; (track) && (n < delta); track = track->next, n++) {
599                                         /* check if space in this track for the strip */
600                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
601                                                 /* move strip to this track */
602                                                 BLI_remlink(&tdn->nlt->strips, strip);
603                                                 BKE_nlatrack_add_strip(track, strip);
604                                                 
605                                                 tdn->nlt = track;
606                                                 tdn->trackIndex++;
607                                         }
608                                         else /* can't move any further */
609                                                 break;
610                                 }
611                         }
612                         else {
613                                 /* make delta 'positive' before using it, since we now know to go backwards */
614                                 delta = -delta;
615                                 
616                                 for (track = tdn->nlt->prev, n = 0; (track) && (n < delta); track = track->prev, n++) {
617                                         /* check if space in this track for the strip */
618                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
619                                                 /* move strip to this track */
620                                                 BLI_remlink(&tdn->nlt->strips, strip);
621                                                 BKE_nlatrack_add_strip(track, strip);
622                                                 
623                                                 tdn->nlt = track;
624                                                 tdn->trackIndex--;
625                                         }
626                                         else /* can't move any further */
627                                                 break;
628                                 }
629                         }
630                 }
631         }
632 }
633
634 static void recalcData_mask_common(TransInfo *t)
635 {
636         Mask *mask = CTX_data_edit_mask(t->context);
637
638         flushTransMasking(t);
639
640         DAG_id_tag_update(&mask->id, 0);
641 }
642
643 /* helper for recalcData() - for Image Editor transforms */
644 static void recalcData_image(TransInfo *t)
645 {
646         if (t->options & CTX_MASK) {
647                 recalcData_mask_common(t);
648         }
649         else if (t->options & CTX_PAINT_CURVE) {
650                 flushTransPaintCurve(t);
651         }
652         else if (t->obedit && t->obedit->type == OB_MESH) {
653                 SpaceImage *sima = t->sa->spacedata.first;
654                 
655                 flushTransUVs(t);
656                 if (sima->flag & SI_LIVE_UNWRAP)
657                         ED_uvedit_live_unwrap_re_solve();
658                 
659                 DAG_id_tag_update(t->obedit->data, 0);
660         }
661 }
662
663 /* helper for recalcData() - for Movie Clip transforms */
664 static void recalcData_spaceclip(TransInfo *t)
665 {
666         SpaceClip *sc = t->sa->spacedata.first;
667
668         if (ED_space_clip_check_show_trackedit(sc)) {
669                 MovieClip *clip = ED_space_clip_get_clip(sc);
670                 ListBase *tracksbase = BKE_tracking_get_active_tracks(&clip->tracking);
671                 MovieTrackingTrack *track;
672                 int framenr = ED_space_clip_get_clip_frame_number(sc);
673
674                 flushTransTracking(t);
675
676                 track = tracksbase->first;
677                 while (track) {
678                         if (TRACK_VIEW_SELECTED(sc, track) && (track->flag & TRACK_LOCKED) == 0) {
679                                 MovieTrackingMarker *marker = BKE_tracking_marker_get(track, framenr);
680
681                                 if (t->mode == TFM_TRANSLATION) {
682                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
683                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
684                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
685                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_POS);
686                                 }
687                                 else if (t->mode == TFM_RESIZE) {
688                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
689                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_DIM);
690                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
691                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_DIM);
692                                 }
693                                 else if (t->mode == TFM_ROTATION) {
694                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
695                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
696                                 }
697                         }
698
699                         track = track->next;
700                 }
701
702                 DAG_id_tag_update(&clip->id, 0);
703         }
704         else if (t->options & CTX_MASK) {
705                 recalcData_mask_common(t);
706         }
707 }
708
709 /* helper for recalcData() - for object transforms, typically in the 3D view */
710 static void recalcData_objects(TransInfo *t)
711 {
712         Base *base = t->scene->basact;
713
714         if (t->obedit) {
715                 if (ELEM(t->obedit->type, OB_CURVE, OB_SURF)) {
716                         Curve *cu = t->obedit->data;
717                         ListBase *nurbs = BKE_curve_editNurbs_get(cu);
718                         Nurb *nu = nurbs->first;
719                         
720                         if (t->state != TRANS_CANCEL) {
721                                 clipMirrorModifier(t, t->obedit);
722                                 applyProject(t);
723                         }
724                         
725                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
726                                 
727                         if (t->state == TRANS_CANCEL) {
728                                 while (nu) {
729                                         BKE_nurb_handles_calc(nu); /* Cant do testhandlesNurb here, it messes up the h1 and h2 flags */
730                                         nu = nu->next;
731                                 }
732                         }
733                         else {
734                                 /* Normal updating */
735                                 while (nu) {
736                                         BKE_nurb_test2D(nu);
737                                         BKE_nurb_handles_calc(nu);
738                                         nu = nu->next;
739                                 }
740                         }
741                 }
742                 else if (t->obedit->type == OB_LATTICE) {
743                         Lattice *la = t->obedit->data;
744                         
745                         if (t->state != TRANS_CANCEL) {
746                                 applyProject(t);
747                         }
748                         
749                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
750                         
751                         if (la->editlatt->latt->flag & LT_OUTSIDE) outside_lattice(la->editlatt->latt);
752                 }
753                 else if (t->obedit->type == OB_MESH) {
754                         BMEditMesh *em = BKE_editmesh_from_object(t->obedit);
755                         /* mirror modifier clipping? */
756                         if (t->state != TRANS_CANCEL) {
757                                 /* apply clipping after so we never project past the clip plane [#25423] */
758                                 applyProject(t);
759                                 clipMirrorModifier(t, t->obedit);
760                         }
761                         if ((t->options & CTX_NO_MIRROR) == 0 && (t->flag & T_MIRROR))
762                                 editbmesh_apply_to_mirror(t);
763
764                         if (t->mode == TFM_EDGE_SLIDE) {
765                                 projectEdgeSlideData(t, false);
766                         }
767                         else if (t->mode == TFM_VERT_SLIDE) {
768                                 projectVertSlideData(t, false);
769                         }
770
771                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
772                         
773                         EDBM_mesh_normals_update(em);
774                         BKE_editmesh_tessface_calc(em);
775                 }
776                 else if (t->obedit->type == OB_ARMATURE) { /* no recalc flag, does pose */
777                         bArmature *arm = t->obedit->data;
778                         ListBase *edbo = arm->edbo;
779                         EditBone *ebo, *ebo_parent;
780                         TransData *td = t->data;
781                         int i;
782                         
783                         if (t->state != TRANS_CANCEL) {
784                                 applyProject(t);
785                         }
786                         
787                         /* Ensure all bones are correctly adjusted */
788                         for (ebo = edbo->first; ebo; ebo = ebo->next) {
789                                 ebo_parent = (ebo->flag & BONE_CONNECTED) ? ebo->parent : NULL;
790                                 
791                                 if (ebo_parent) {
792                                         /* If this bone has a parent tip that has been moved */
793                                         if (ebo_parent->flag & BONE_TIPSEL) {
794                                                 copy_v3_v3(ebo->head, ebo_parent->tail);
795                                                 if (t->mode == TFM_BONE_ENVELOPE) ebo->rad_head = ebo_parent->rad_tail;
796                                         }
797                                         /* If this bone has a parent tip that has NOT been moved */
798                                         else {
799                                                 copy_v3_v3(ebo_parent->tail, ebo->head);
800                                                 if (t->mode == TFM_BONE_ENVELOPE) ebo_parent->rad_tail = ebo->rad_head;
801                                         }
802                                 }
803                                 
804                                 /* on extrude bones, oldlength==0.0f, so we scale radius of points */
805                                 ebo->length = len_v3v3(ebo->head, ebo->tail);
806                                 if (ebo->oldlength == 0.0f) {
807                                         ebo->rad_head = 0.25f * ebo->length;
808                                         ebo->rad_tail = 0.10f * ebo->length;
809                                         ebo->dist = 0.25f * ebo->length;
810                                         if (ebo->parent) {
811                                                 if (ebo->rad_head > ebo->parent->rad_tail)
812                                                         ebo->rad_head = ebo->parent->rad_tail;
813                                         }
814                                 }
815                                 else if (t->mode != TFM_BONE_ENVELOPE) {
816                                         /* if bones change length, lets do that for the deform distance as well */
817                                         ebo->dist *= ebo->length / ebo->oldlength;
818                                         ebo->rad_head *= ebo->length / ebo->oldlength;
819                                         ebo->rad_tail *= ebo->length / ebo->oldlength;
820                                         ebo->oldlength = ebo->length;
821
822                                         if (ebo_parent) {
823                                                 ebo_parent->rad_tail = ebo->rad_head;
824                                         }
825                                 }
826                         }
827                         
828                         if (!ELEM(t->mode, TFM_BONE_ROLL, TFM_BONE_ENVELOPE, TFM_BONE_ENVELOPE_DIST, TFM_BONESIZE)) {
829                                 /* fix roll */
830                                 for (i = 0; i < t->total; i++, td++) {
831                                         if (td->extra) {
832                                                 float vec[3], up_axis[3];
833                                                 float qrot[4];
834                                                 float roll;
835                                                 
836                                                 ebo = td->extra;
837
838                                                 if (t->state == TRANS_CANCEL) {
839                                                         /* restore roll */
840                                                         ebo->roll = td->ival;
841                                                 }
842                                                 else {
843                                                         copy_v3_v3(up_axis, td->axismtx[2]);
844
845                                                         sub_v3_v3v3(vec, ebo->tail, ebo->head);
846                                                         normalize_v3(vec);
847                                                         rotation_between_vecs_to_quat(qrot, td->axismtx[1], vec);
848                                                         mul_qt_v3(qrot, up_axis);
849
850                                                         /* roll has a tendency to flip in certain orientations - [#34283], [#33974] */
851                                                         roll = ED_rollBoneToVector(ebo, up_axis, false);
852                                                         ebo->roll = angle_compat_rad(roll, td->ival);
853                                                 }
854                                         }
855                                 }
856                         }
857                         
858                         if (arm->flag & ARM_MIRROR_EDIT) {
859                                 if (t->state != TRANS_CANCEL)
860                                         transform_armature_mirror_update(t->obedit);
861                                 else
862                                         restoreBones(t);
863                         }
864                 }
865                 else {
866                         if (t->state != TRANS_CANCEL) {
867                                 applyProject(t);
868                         }
869                         DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
870                 }
871         }
872         else if ((t->flag & T_POSE) && t->poseobj) {
873                 Object *ob = t->poseobj;
874                 bArmature *arm = ob->data;
875                 
876                 /* if animtimer is running, and the object already has animation data,
877                  * check if the auto-record feature means that we should record 'samples'
878                  * (i.e. uneditable animation values)
879                  *
880                  * context is needed for keying set poll() functions.
881                  */
882                 // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
883                 if ((t->animtimer) && (t->context) && IS_AUTOKEY_ON(t->scene)) {
884                         int targetless_ik = (t->flag & T_AUTOIK); // XXX this currently doesn't work, since flags aren't set yet!
885                         
886                         animrecord_check_state(t->scene, &ob->id, t->animtimer);
887                         autokeyframe_pose_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode, targetless_ik);
888                 }
889                 
890                 /* old optimize trick... this enforces to bypass the depgraph */
891                 if (!(arm->flag & ARM_DELAYDEFORM)) {
892                         DAG_id_tag_update(&ob->id, OB_RECALC_DATA);  /* sets recalc flags */
893                         /* transformation of pose may affect IK tree, make sure it is rebuilt */
894                         BIK_clear_data(ob->pose);
895                 }
896                 else
897                         BKE_pose_where_is(t->scene, ob);
898         }
899         else if (base && (base->object->mode & OB_MODE_PARTICLE_EDIT) && PE_get_current(t->scene, base->object)) {
900                 if (t->state != TRANS_CANCEL) {
901                         applyProject(t);
902                 }
903                 flushTransParticles(t);
904         }
905         else {
906                 int i;
907                 
908                 if (t->state != TRANS_CANCEL) {
909                         applyProject(t);
910                 }
911                 
912                 for (i = 0; i < t->total; i++) {
913                         TransData *td = t->data + i;
914                         Object *ob = td->ob;
915                         
916                         if (td->flag & TD_NOACTION)
917                                 break;
918                         
919                         if (td->flag & TD_SKIP)
920                                 continue;
921                         
922                         /* if animtimer is running, and the object already has animation data,
923                          * check if the auto-record feature means that we should record 'samples'
924                          * (i.e. uneditable animation values)
925                          */
926                         // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
927                         if ((t->animtimer) && IS_AUTOKEY_ON(t->scene)) {
928                                 animrecord_check_state(t->scene, &ob->id, t->animtimer);
929                                 autokeyframe_ob_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode);
930                         }
931                         
932                         /* sets recalc flags fully, instead of flushing existing ones 
933                          * otherwise proxies don't function correctly
934                          */
935                         DAG_id_tag_update(&ob->id, OB_RECALC_OB);
936
937                         if (t->flag & T_TEXTURE)
938                                 DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
939                 }
940         }
941 }
942
943 /* helper for recalcData() - for sequencer transforms */
944 static void recalcData_sequencer(TransInfo *t)
945 {
946         TransData *td;
947         int a;
948         Sequence *seq_prev = NULL;
949
950         for (a = 0, td = t->data; a < t->total; a++, td++) {
951                 TransDataSeq *tdsq = (TransDataSeq *) td->extra;
952                 Sequence *seq = tdsq->seq;
953
954                 if (seq != seq_prev) {
955                         if (BKE_sequence_tx_fullupdate_test(seq)) {
956                                 /* A few effect strip types need a complete recache on transform. */
957                                 BKE_sequence_invalidate_cache(t->scene, seq);
958                         }
959                         else {
960                                 BKE_sequence_invalidate_dependent(t->scene, seq);
961                         }
962                 }
963
964                 seq_prev = seq;
965         }
966
967         BKE_sequencer_preprocessed_cache_cleanup();
968
969         flushTransSeq(t);
970 }
971
972 /* force recalculation of triangles during transformation */
973 static void recalcData_gpencil_strokes(TransInfo *t)
974  {
975         TransData *td = t->data;
976         for (int i = 0; i < t->total; i++, td++) {
977                 bGPDstroke *gps = td->extra;
978                 gps->flag |= GP_STROKE_RECALC_CACHES;
979         }
980 }
981
982 /* called for updating while transform acts, once per redraw */
983 void recalcData(TransInfo *t)
984 {
985         /* if tests must match createTransData for correct updates */
986         if (t->options & CTX_TEXTURE) {
987                 recalcData_objects(t);
988         }
989         else if (t->options & CTX_EDGE) {
990                 recalcData_objects(t);
991         }
992         else if (t->options & CTX_PAINT_CURVE) {
993                 flushTransPaintCurve(t);
994         }
995         else if (t->options & CTX_GPENCIL_STROKES) {
996                 /* set recalc triangle cache flag */
997                 recalcData_gpencil_strokes(t);
998         }
999         else if (t->spacetype == SPACE_IMAGE) {
1000                 recalcData_image(t);
1001         }
1002         else if (t->spacetype == SPACE_ACTION) {
1003                 recalcData_actedit(t);
1004         }
1005         else if (t->spacetype == SPACE_NLA) {
1006                 recalcData_nla(t);
1007         }
1008         else if (t->spacetype == SPACE_SEQ) {
1009                 recalcData_sequencer(t);
1010         }
1011         else if (t->spacetype == SPACE_IPO) {
1012                 recalcData_graphedit(t);
1013         }
1014         else if (t->spacetype == SPACE_NODE) {
1015                 flushTransNodes(t);
1016         }
1017         else if (t->spacetype == SPACE_CLIP) {
1018                 recalcData_spaceclip(t);
1019         }
1020         else {
1021                 recalcData_objects(t);
1022         }
1023 }
1024
1025 void drawLine(TransInfo *t, const float center[3], const float dir[3], char axis, short options)
1026 {
1027         float v1[3], v2[3], v3[3];
1028         unsigned char col[3], col2[3];
1029
1030         if (t->spacetype == SPACE_VIEW3D) {
1031                 View3D *v3d = t->view;
1032                 
1033                 glPushMatrix();
1034                 
1035                 //if (t->obedit) glLoadMatrixf(t->obedit->obmat);       // sets opengl viewing
1036                 
1037                 
1038                 copy_v3_v3(v3, dir);
1039                 mul_v3_fl(v3, v3d->far);
1040                 
1041                 sub_v3_v3v3(v2, center, v3);
1042                 add_v3_v3v3(v1, center, v3);
1043                 
1044                 if (options & DRAWLIGHT) {
1045                         col[0] = col[1] = col[2] = 220;
1046                 }
1047                 else {
1048                         UI_GetThemeColor3ubv(TH_GRID, col);
1049                 }
1050                 UI_make_axis_color(col, col2, axis);
1051                 glColor3ubv(col2);
1052                 
1053                 setlinestyle(0);
1054                 glBegin(GL_LINES);
1055                 glVertex3fv(v1);
1056                 glVertex3fv(v2);
1057                 glEnd();
1058                 
1059                 glPopMatrix();
1060         }
1061 }
1062
1063 /**
1064  * Free data before switching to another mode.
1065  */
1066 void resetTransModal(TransInfo *t)
1067 {
1068         if (t->mode == TFM_EDGE_SLIDE) {
1069                 freeEdgeSlideVerts(t, &t->custom.mode);
1070         }
1071         else if (t->mode == TFM_VERT_SLIDE) {
1072                 freeVertSlideVerts(t, &t->custom.mode);
1073         }
1074 }
1075
1076 void resetTransRestrictions(TransInfo *t)
1077 {
1078         t->flag &= ~T_ALL_RESTRICTIONS;
1079 }
1080
1081 static int initTransInfo_edit_pet_to_flag(const int proportional)
1082 {
1083         switch (proportional) {
1084                 case PROP_EDIT_ON:
1085                         return T_PROP_EDIT;
1086                 case PROP_EDIT_CONNECTED:
1087                         return T_PROP_EDIT | T_PROP_CONNECTED;
1088                 case PROP_EDIT_PROJECTED:
1089                         return T_PROP_EDIT | T_PROP_PROJECTED;
1090                 default:
1091                         return 0;
1092         }
1093 }
1094
1095 /**
1096  * Setup internal data, mouse, vectors
1097  *
1098  * \note \a op and \a event can be NULL
1099  *
1100  * \see #saveTransform does the reverse.
1101  */
1102 void initTransInfo(bContext *C, TransInfo *t, wmOperator *op, const wmEvent *event)
1103 {
1104         Scene *sce = CTX_data_scene(C);
1105         ToolSettings *ts = CTX_data_tool_settings(C);
1106         ARegion *ar = CTX_wm_region(C);
1107         ScrArea *sa = CTX_wm_area(C);
1108         Object *obedit = CTX_data_edit_object(C);
1109         Object *ob = CTX_data_active_object(C);
1110         bGPdata *gpd = CTX_data_gpencil_data(C);
1111         PropertyRNA *prop;
1112         
1113         t->scene = sce;
1114         t->sa = sa;
1115         t->ar = ar;
1116         t->obedit = obedit;
1117         t->settings = ts;
1118         t->reports = op ? op->reports : NULL;
1119
1120         if (obedit) {
1121                 copy_m3_m4(t->obedit_mat, obedit->obmat);
1122                 normalize_m3(t->obedit_mat);
1123         }
1124
1125         t->data = NULL;
1126         t->ext = NULL;
1127         
1128         t->helpline = HLP_NONE;
1129         
1130         t->flag = 0;
1131         
1132         t->redraw = TREDRAW_HARD;  /* redraw first time */
1133         
1134         if (event) {
1135                 t->mouse.imval[0] = event->mval[0];
1136                 t->mouse.imval[1] = event->mval[1];
1137         }
1138         else {
1139                 t->mouse.imval[0] = 0;
1140                 t->mouse.imval[1] = 0;
1141         }
1142         
1143         t->con.imval[0] = t->mouse.imval[0];
1144         t->con.imval[1] = t->mouse.imval[1];
1145         
1146         t->mval[0] = t->mouse.imval[0];
1147         t->mval[1] = t->mouse.imval[1];
1148         
1149         t->transform        = NULL;
1150         t->handleEvent      = NULL;
1151         
1152         t->total            = 0;
1153         
1154         t->val = 0.0f;
1155
1156         zero_v3(t->vec);
1157         zero_v3(t->center);
1158         zero_v3(t->center_global);
1159
1160         unit_m3(t->mat);
1161         
1162         /* if there's an event, we're modal */
1163         if (event) {
1164                 t->flag |= T_MODAL;
1165         }
1166
1167         /* Crease needs edge flag */
1168         if (ELEM(t->mode, TFM_CREASE, TFM_BWEIGHT)) {
1169                 t->options |= CTX_EDGE;
1170         }
1171
1172         t->remove_on_cancel = false;
1173
1174         if (op && (prop = RNA_struct_find_property(op->ptr, "remove_on_cancel")) && RNA_property_is_set(op->ptr, prop)) {
1175                 if (RNA_property_boolean_get(op->ptr, prop)) {
1176                         t->remove_on_cancel = true;
1177                 }
1178         }
1179         
1180         /* GPencil editing context */
1181         if ((gpd) && (gpd->flag & GP_DATA_STROKE_EDITMODE)) {
1182                 t->options |= CTX_GPENCIL_STROKES;
1183         }
1184
1185         /* Assign the space type, some exceptions for running in different mode */
1186         if (sa == NULL) {
1187                 /* background mode */
1188                 t->spacetype = SPACE_EMPTY;
1189         }
1190         else if ((ar == NULL) && (sa->spacetype == SPACE_VIEW3D)) {
1191                 /* running in the text editor */
1192                 t->spacetype = SPACE_EMPTY;
1193         }
1194         else {
1195                 /* normal operation */
1196                 t->spacetype = sa->spacetype;
1197         }
1198
1199         /* handle T_ALT_TRANSFORM initialization, we may use for different operators */
1200         if (op) {
1201                 const char *prop_id = NULL;
1202                 if (t->mode == TFM_SHRINKFATTEN) {
1203                         prop_id = "use_even_offset";
1204                 }
1205
1206                 if (prop_id && (prop = RNA_struct_find_property(op->ptr, prop_id)) &&
1207                     RNA_property_is_set(op->ptr, prop))
1208                 {
1209                         BKE_BIT_TEST_SET(t->flag, RNA_property_boolean_get(op->ptr, prop), T_ALT_TRANSFORM);
1210                 }
1211         }
1212
1213         if (t->spacetype == SPACE_VIEW3D) {
1214                 View3D *v3d = sa->spacedata.first;
1215                 bScreen *animscreen = ED_screen_animation_playing(CTX_wm_manager(C));
1216                 
1217                 t->view = v3d;
1218                 t->animtimer = (animscreen) ? animscreen->animtimer : NULL;
1219                 
1220                 /* turn manipulator off during transform */
1221                 // FIXME: but don't do this when USING the manipulator...
1222                 if (t->flag & T_MODAL) {
1223                         t->twtype = v3d->twtype;
1224                         v3d->twtype = 0;
1225                 }
1226
1227                 if (v3d->flag & V3D_ALIGN) t->flag |= T_V3D_ALIGN;
1228                 t->around = v3d->around;
1229                 
1230                 /* bend always uses the cursor */
1231                 if (t->mode == TFM_BEND) {
1232                         t->around = V3D_AROUND_CURSOR;
1233                 }
1234
1235                 t->current_orientation = v3d->twmode;
1236
1237                 /* exceptional case */
1238                 if (t->around == V3D_AROUND_LOCAL_ORIGINS) {
1239                         if (ELEM(t->mode, TFM_ROTATION, TFM_RESIZE, TFM_TRACKBALL)) {
1240                                 const bool use_island = transdata_check_local_islands(t, t->around);
1241
1242                                 if (obedit && !use_island) {
1243                                         t->options |= CTX_NO_PET;
1244                                 }
1245                         }
1246                 }
1247
1248                 if (ob && ob->mode & OB_MODE_ALL_PAINT) {
1249                         Paint *p = BKE_paint_get_active_from_context(C);
1250                         if (p && p->brush && (p->brush->flag & BRUSH_CURVE)) {
1251                                 t->options |= CTX_PAINT_CURVE;
1252                         }
1253                 }
1254
1255                 /* initialize UV transform from */
1256                 if (op && ((prop = RNA_struct_find_property(op->ptr, "correct_uv")))) {
1257                         if (RNA_property_is_set(op->ptr, prop)) {
1258                                 if (RNA_property_boolean_get(op->ptr, prop)) {
1259                                         t->settings->uvcalc_flag |= UVCALC_TRANSFORM_CORRECT;
1260                                 }
1261                                 else {
1262                                         t->settings->uvcalc_flag &= ~UVCALC_TRANSFORM_CORRECT;
1263                                 }
1264                         }
1265                         else {
1266                                 RNA_property_boolean_set(op->ptr, prop, (t->settings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) != 0);
1267                         }
1268                 }
1269
1270         }
1271         else if (t->spacetype == SPACE_IMAGE) {
1272                 SpaceImage *sima = sa->spacedata.first;
1273                 // XXX for now, get View2D from the active region
1274                 t->view = &ar->v2d;
1275                 t->around = sima->around;
1276
1277                 if (ED_space_image_show_uvedit(sima, t->obedit)) {
1278                         /* UV transform */
1279                 }
1280                 else if (sima->mode == SI_MODE_MASK) {
1281                         t->options |= CTX_MASK;
1282                 }
1283                 else if (sima->mode == SI_MODE_PAINT) {
1284                         Paint *p = &sce->toolsettings->imapaint.paint;
1285                         if (p->brush && (p->brush->flag & BRUSH_CURVE)) {
1286                                 t->options |= CTX_PAINT_CURVE;
1287                         }
1288                 }
1289                 /* image not in uv edit, nor in mask mode, can happen for some tools */
1290         }
1291         else if (t->spacetype == SPACE_NODE) {
1292                 // XXX for now, get View2D from the active region
1293                 t->view = &ar->v2d;
1294                 t->around = V3D_AROUND_CENTER_BOUNDS;
1295         }
1296         else if (t->spacetype == SPACE_IPO) {
1297                 SpaceIpo *sipo = sa->spacedata.first;
1298                 t->view = &ar->v2d;
1299                 t->around = sipo->around;
1300         }
1301         else if (t->spacetype == SPACE_CLIP) {
1302                 SpaceClip *sclip = sa->spacedata.first;
1303                 t->view = &ar->v2d;
1304                 t->around = sclip->around;
1305
1306                 if (ED_space_clip_check_show_trackedit(sclip))
1307                         t->options |= CTX_MOVIECLIP;
1308                 else if (ED_space_clip_check_show_maskedit(sclip))
1309                         t->options |= CTX_MASK;
1310         }
1311         else {
1312                 if (ar) {
1313                         // XXX for now, get View2D  from the active region
1314                         t->view = &ar->v2d;
1315                         // XXX for now, the center point is the midpoint of the data
1316                 }
1317                 else {
1318                         t->view = NULL;
1319                 }
1320                 t->around = V3D_AROUND_CENTER_BOUNDS;
1321         }
1322
1323         if (op && ((prop = RNA_struct_find_property(op->ptr, "constraint_orientation")) &&
1324                    RNA_property_is_set(op->ptr, prop)))
1325         {
1326                 t->current_orientation = RNA_property_enum_get(op->ptr, prop);
1327
1328                 if (t->current_orientation >= V3D_MANIP_CUSTOM + BIF_countTransformOrientation(C)) {
1329                         t->current_orientation = V3D_MANIP_GLOBAL;
1330                 }
1331         }
1332         
1333         if (op && ((prop = RNA_struct_find_property(op->ptr, "release_confirm")) &&
1334                    RNA_property_is_set(op->ptr, prop)))
1335         {
1336                 if (RNA_property_boolean_get(op->ptr, prop)) {
1337                         t->flag |= T_RELEASE_CONFIRM;
1338                 }
1339         }
1340         else {
1341                 if (U.flag & USER_RELEASECONFIRM) {
1342                         t->flag |= T_RELEASE_CONFIRM;
1343                 }
1344         }
1345
1346         if (op && ((prop = RNA_struct_find_property(op->ptr, "mirror")) &&
1347                    RNA_property_is_set(op->ptr, prop)))
1348         {
1349                 if (RNA_property_boolean_get(op->ptr, prop)) {
1350                         t->flag |= T_MIRROR;
1351                         t->mirror = 1;
1352                 }
1353         }
1354         // Need stuff to take it from edit mesh or whatnot here
1355         else if (t->spacetype == SPACE_VIEW3D) {
1356                 if (t->obedit && t->obedit->type == OB_MESH && (((Mesh *)t->obedit->data)->editflag & ME_EDIT_MIRROR_X)) {
1357                         t->flag |= T_MIRROR;
1358                         t->mirror = 1;
1359                 }
1360         }
1361         
1362         /* setting PET flag only if property exist in operator. Otherwise, assume it's not supported */
1363         if (op && (prop = RNA_struct_find_property(op->ptr, "proportional"))) {
1364                 if (RNA_property_is_set(op->ptr, prop)) {
1365                         t->flag |= initTransInfo_edit_pet_to_flag(RNA_property_enum_get(op->ptr, prop));
1366                 }
1367                 else {
1368                         /* use settings from scene only if modal */
1369                         if (t->flag & T_MODAL) {
1370                                 if ((t->options & CTX_NO_PET) == 0) {
1371                                         if (t->spacetype == SPACE_IPO) {
1372                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_fcurve);
1373                                         }
1374                                         else if (t->spacetype == SPACE_ACTION) {
1375                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_action);
1376                                         }
1377                                         else if (t->obedit) {
1378                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1379                                         }
1380                                         else if (t->options & CTX_GPENCIL_STROKES) {
1381                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1382                                         }
1383                                         else if (t->options & CTX_MASK) {
1384                                                 if (ts->proportional_mask) {
1385                                                         t->flag |= T_PROP_EDIT;
1386
1387                                                         if (ts->proportional == PROP_EDIT_CONNECTED) {
1388                                                                 t->flag |= T_PROP_CONNECTED;
1389                                                         }
1390                                                 }
1391                                         }
1392                                         else if (t->obedit == NULL && ts->proportional_objects) {
1393                                                 t->flag |= T_PROP_EDIT;
1394                                         }
1395                                 }
1396                         }
1397                 }
1398                 
1399                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_size")) &&
1400                            RNA_property_is_set(op->ptr, prop)))
1401                 {
1402                         t->prop_size = RNA_property_float_get(op->ptr, prop);
1403                 }
1404                 else {
1405                         t->prop_size = ts->proportional_size;
1406                 }
1407                 
1408                 
1409                 /* TRANSFORM_FIX_ME rna restrictions */
1410                 if (t->prop_size <= 0.00001f) {
1411                         printf("Proportional size (%f) under 0.00001, resetting to 1!\n", t->prop_size);
1412                         t->prop_size = 1.0f;
1413                 }
1414                 
1415                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_edit_falloff")) &&
1416                            RNA_property_is_set(op->ptr, prop)))
1417                 {
1418                         t->prop_mode = RNA_property_enum_get(op->ptr, prop);
1419                 }
1420                 else {
1421                         t->prop_mode = ts->prop_mode;
1422                 }
1423         }
1424         else { /* add not pet option to context when not available */
1425                 t->options |= CTX_NO_PET;
1426         }
1427         
1428         // Mirror is not supported with PET, turn it off.
1429 #if 0
1430         if (t->flag & T_PROP_EDIT) {
1431                 t->flag &= ~T_MIRROR;
1432         }
1433 #endif
1434
1435         setTransformViewAspect(t, t->aspect);
1436         setTransformViewMatrices(t);
1437         initNumInput(&t->num);
1438 }
1439
1440 /* Here I would suggest only TransInfo related issues, like free data & reset vars. Not redraws */
1441 void postTrans(bContext *C, TransInfo *t)
1442 {
1443         TransData *td;
1444         
1445         if (t->draw_handle_view)
1446                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_view);
1447         if (t->draw_handle_apply)
1448                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_apply);
1449         if (t->draw_handle_pixel)
1450                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_pixel);
1451         if (t->draw_handle_cursor)
1452                 WM_paint_cursor_end(CTX_wm_manager(C), t->draw_handle_cursor);
1453
1454         /* Free all custom-data */
1455         {
1456                 TransCustomData *custom_data = &t->custom.first_elem;
1457                 for (int i = 0; i < TRANS_CUSTOM_DATA_ELEM_MAX; i++, custom_data++) {
1458                         if (custom_data->free_cb) {
1459                                 /* Can take over freeing t->data and data2d etc... */
1460                                 custom_data->free_cb(t, custom_data);
1461                                 BLI_assert(custom_data->data == NULL);
1462                         }
1463                         else if ((custom_data->data != NULL) && custom_data->use_free) {
1464                                 MEM_freeN(custom_data->data);
1465                                 custom_data->data = NULL;
1466                         }
1467                 }
1468         }
1469
1470         /* postTrans can be called when nothing is selected, so data is NULL already */
1471         if (t->data) {
1472                 
1473                 /* free data malloced per trans-data */
1474                 if ((t->obedit && ELEM(t->obedit->type, OB_CURVE, OB_SURF)) ||
1475                     (t->spacetype == SPACE_IPO))
1476                 {
1477                         int a;
1478                         for (a = 0, td = t->data; a < t->total; a++, td++) {
1479                                 if (td->flag & TD_BEZTRIPLE) {
1480                                         MEM_freeN(td->hdata);
1481                                 }
1482                         }
1483                 }
1484                 MEM_freeN(t->data);
1485         }
1486         
1487         BLI_freelistN(&t->tsnap.points);
1488
1489         if (t->ext) MEM_freeN(t->ext);
1490         if (t->data2d) {
1491                 MEM_freeN(t->data2d);
1492                 t->data2d = NULL;
1493         }
1494         
1495         if (t->spacetype == SPACE_IMAGE) {
1496                 if (t->options & (CTX_MASK | CTX_PAINT_CURVE)) {
1497                         /* pass */
1498                 }
1499                 else {
1500                         SpaceImage *sima = t->sa->spacedata.first;
1501                         if (sima->flag & SI_LIVE_UNWRAP)
1502                                 ED_uvedit_live_unwrap_end(t->state == TRANS_CANCEL);
1503                 }
1504         }
1505         else if (t->spacetype == SPACE_VIEW3D) {
1506                 View3D *v3d = t->sa->spacedata.first;
1507                 /* restore manipulator */
1508                 if (t->flag & T_MODAL) {
1509                         v3d->twtype = t->twtype;
1510                 }
1511         }
1512         
1513         if (t->mouse.data) {
1514                 MEM_freeN(t->mouse.data);
1515         }
1516
1517         freeSnapping(t);
1518 }
1519
1520 void applyTransObjects(TransInfo *t)
1521 {
1522         TransData *td;
1523         
1524         for (td = t->data; td < t->data + t->total; td++) {
1525                 copy_v3_v3(td->iloc, td->loc);
1526                 if (td->ext->rot) {
1527                         copy_v3_v3(td->ext->irot, td->ext->rot);
1528                 }
1529                 if (td->ext->size) {
1530                         copy_v3_v3(td->ext->isize, td->ext->size);
1531                 }
1532         }
1533         recalcData(t);
1534 }
1535
1536 static void restoreElement(TransData *td)
1537 {
1538         /* TransData for crease has no loc */
1539         if (td->loc) {
1540                 copy_v3_v3(td->loc, td->iloc);
1541         }
1542         if (td->val) {
1543                 *td->val = td->ival;
1544         }
1545
1546         if (td->ext && (td->flag & TD_NO_EXT) == 0) {
1547                 if (td->ext->rot) {
1548                         copy_v3_v3(td->ext->rot, td->ext->irot);
1549                 }
1550                 if (td->ext->rotAngle) {
1551                         *td->ext->rotAngle = td->ext->irotAngle;
1552                 }
1553                 if (td->ext->rotAxis) {
1554                         copy_v3_v3(td->ext->rotAxis, td->ext->irotAxis);
1555                 }
1556                 /* XXX, drotAngle & drotAxis not used yet */
1557                 if (td->ext->size) {
1558                         copy_v3_v3(td->ext->size, td->ext->isize);
1559                 }
1560                 if (td->ext->quat) {
1561                         copy_qt_qt(td->ext->quat, td->ext->iquat);
1562                 }
1563         }
1564         
1565         if (td->flag & TD_BEZTRIPLE) {
1566                 *(td->hdata->h1) = td->hdata->ih1;
1567                 *(td->hdata->h2) = td->hdata->ih2;
1568         }
1569 }
1570
1571 void restoreTransObjects(TransInfo *t)
1572 {
1573         TransData *td;
1574         TransData2D *td2d;
1575
1576         for (td = t->data; td < t->data + t->total; td++) {
1577                 restoreElement(td);
1578         }
1579         
1580         for (td2d = t->data2d; t->data2d && td2d < t->data2d + t->total; td2d++) {
1581                 if (td2d->h1) {
1582                         td2d->h1[0] = td2d->ih1[0];
1583                         td2d->h1[1] = td2d->ih1[1];
1584                 }
1585                 if (td2d->h2) {
1586                         td2d->h2[0] = td2d->ih2[0];
1587                         td2d->h2[1] = td2d->ih2[1];
1588                 }
1589         }
1590
1591         unit_m3(t->mat);
1592         
1593         recalcData(t);
1594 }
1595
1596 void calculateCenter2D(TransInfo *t)
1597 {
1598         BLI_assert(!is_zero_v3(t->aspect));
1599
1600         if (t->flag & (T_EDIT | T_POSE)) {
1601                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1602                 float vec[3];
1603                 
1604                 copy_v3_v3(vec, t->center);
1605                 mul_m4_v3(ob->obmat, vec);
1606                 projectFloatView(t, vec, t->center2d);
1607         }
1608         else {
1609                 projectFloatView(t, t->center, t->center2d);
1610         }
1611 }
1612
1613 void calculateCenterGlobal(
1614         TransInfo *t, const float center_local[3],
1615         float r_center_global[3])
1616 {
1617         /* setting constraint center */
1618         /* note, init functions may over-ride t->center */
1619         if (t->flag & (T_EDIT | T_POSE)) {
1620                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1621                 mul_v3_m4v3(r_center_global, ob->obmat, center_local);
1622         }
1623         else {
1624                 copy_v3_v3(r_center_global, center_local);
1625         }
1626 }
1627
1628 void calculateCenterCursor(TransInfo *t, float r_center[3])
1629 {
1630         const float *cursor;
1631         
1632         cursor = ED_view3d_cursor3d_get(t->scene, t->view);
1633         copy_v3_v3(r_center, cursor);
1634         
1635         /* If edit or pose mode, move cursor in local space */
1636         if (t->flag & (T_EDIT | T_POSE)) {
1637                 Object *ob = t->obedit ? t->obedit : t->poseobj;
1638                 float mat[3][3], imat[3][3];
1639                 
1640                 sub_v3_v3v3(r_center, r_center, ob->obmat[3]);
1641                 copy_m3_m4(mat, ob->obmat);
1642                 invert_m3_m3(imat, mat);
1643                 mul_m3_v3(imat, r_center);
1644         }
1645         else if (t->options & CTX_PAINT_CURVE) {
1646                 if (ED_view3d_project_float_global(t->ar, cursor, r_center, V3D_PROJ_TEST_NOP) != V3D_PROJ_RET_OK) {
1647                         r_center[0] = t->ar->winx / 2.0f;
1648                         r_center[1] = t->ar->winy / 2.0f;
1649                 }
1650                 r_center[2] = 0.0f;
1651         }
1652 }
1653
1654 void calculateCenterCursor2D(TransInfo *t, float r_center[2])
1655 {
1656         const float *cursor = NULL;
1657         
1658         if (t->spacetype == SPACE_IMAGE) {
1659                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1660                 cursor = sima->cursor;
1661         }
1662         else if (t->spacetype == SPACE_CLIP) {
1663                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1664                 cursor = space_clip->cursor;
1665         }
1666
1667         if (cursor) {
1668                 if (t->options & CTX_MASK) {
1669                         float co[2];
1670
1671                         if (t->spacetype == SPACE_IMAGE) {
1672                                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1673                                 BKE_mask_coord_from_image(sima->image, &sima->iuser, co, cursor);
1674                         }
1675                         else if (t->spacetype == SPACE_CLIP) {
1676                                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1677                                 BKE_mask_coord_from_movieclip(space_clip->clip, &space_clip->user, co, cursor);
1678                         }
1679                         else {
1680                                 BLI_assert(!"Shall not happen");
1681                         }
1682
1683                         r_center[0] = co[0] * t->aspect[0];
1684                         r_center[1] = co[1] * t->aspect[1];
1685                 }
1686                 else if (t->options & CTX_PAINT_CURVE) {
1687                         if (t->spacetype == SPACE_IMAGE) {
1688                                 r_center[0] = UI_view2d_view_to_region_x(&t->ar->v2d, cursor[0]);
1689                                 r_center[1] = UI_view2d_view_to_region_y(&t->ar->v2d, cursor[1]);
1690                         }
1691                 }
1692                 else {
1693                         r_center[0] = cursor[0] * t->aspect[0];
1694                         r_center[1] = cursor[1] * t->aspect[1];
1695                 }
1696         }
1697 }
1698
1699 void calculateCenterCursorGraph2D(TransInfo *t, float r_center[2])
1700 {
1701         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
1702         Scene *scene = t->scene;
1703         
1704         /* cursor is combination of current frame, and graph-editor cursor value */
1705         if (sipo->mode == SIPO_MODE_DRIVERS) {
1706                 r_center[0] = sipo->cursorTime;
1707                 r_center[1] = sipo->cursorVal;
1708         }
1709         else {
1710                 r_center[0] = (float)(scene->r.cfra);
1711                 r_center[1] = sipo->cursorVal;
1712         }
1713 }
1714
1715 void calculateCenterMedian(TransInfo *t, float r_center[3])
1716 {
1717         float partial[3] = {0.0f, 0.0f, 0.0f};
1718         int total = 0;
1719         int i;
1720         
1721         for (i = 0; i < t->total; i++) {
1722                 if (t->data[i].flag & TD_SELECTED) {
1723                         if (!(t->data[i].flag & TD_NOCENTER)) {
1724                                 add_v3_v3(partial, t->data[i].center);
1725                                 total++;
1726                         }
1727                 }
1728         }
1729         if (total) {
1730                 mul_v3_fl(partial, 1.0f / (float)total);
1731         }
1732         copy_v3_v3(r_center, partial);
1733 }
1734
1735 void calculateCenterBound(TransInfo *t, float r_center[3])
1736 {
1737         float max[3];
1738         float min[3];
1739         int i;
1740         for (i = 0; i < t->total; i++) {
1741                 if (i) {
1742                         if (t->data[i].flag & TD_SELECTED) {
1743                                 if (!(t->data[i].flag & TD_NOCENTER))
1744                                         minmax_v3v3_v3(min, max, t->data[i].center);
1745                         }
1746                 }
1747                 else {
1748                         copy_v3_v3(max, t->data[i].center);
1749                         copy_v3_v3(min, t->data[i].center);
1750                 }
1751         }
1752         mid_v3_v3v3(r_center, min, max);
1753 }
1754
1755 /**
1756  * \param select_only only get active center from data being transformed.
1757  */
1758 bool calculateCenterActive(TransInfo *t, bool select_only, float r_center[3])
1759 {
1760         bool ok = false;
1761
1762         if (t->obedit) {
1763                 if (ED_object_editmode_calc_active_center(t->obedit, select_only, r_center)) {
1764                         ok = true;
1765                 }
1766         }
1767         else if (t->flag & T_POSE) {
1768                 Scene *scene = t->scene;
1769                 Object *ob = OBACT;
1770                 if (ob) {
1771                         bPoseChannel *pchan = BKE_pose_channel_active(ob);
1772                         if (pchan && (!select_only || (pchan->bone->flag & BONE_SELECTED))) {
1773                                 copy_v3_v3(r_center, pchan->pose_head);
1774                                 ok = true;
1775                         }
1776                 }
1777         }
1778         else if (t->options & CTX_PAINT_CURVE) {
1779                 Paint *p = BKE_paint_get_active(t->scene);
1780                 Brush *br = p->brush;
1781                 PaintCurve *pc = br->paint_curve;
1782                 copy_v3_v3(r_center, pc->points[pc->add_index - 1].bez.vec[1]);
1783                 r_center[2] = 0.0f;
1784                 ok = true;
1785         }
1786         else {
1787                 /* object mode */
1788                 Scene *scene = t->scene;
1789                 Object *ob = OBACT;
1790                 if (ob && (!select_only || (ob->flag & SELECT))) {
1791                         copy_v3_v3(r_center, ob->obmat[3]);
1792                         ok = true;
1793                 }
1794         }
1795
1796         return ok;
1797 }
1798
1799 static void calculateCenter_FromAround(TransInfo *t, int around, float r_center[3])
1800 {
1801         switch (around) {
1802                 case V3D_AROUND_CENTER_BOUNDS:
1803                         calculateCenterBound(t, r_center);
1804                         break;
1805                 case V3D_AROUND_CENTER_MEAN:
1806                         calculateCenterMedian(t, r_center);
1807                         break;
1808                 case V3D_AROUND_CURSOR:
1809                         if (ELEM(t->spacetype, SPACE_IMAGE, SPACE_CLIP))
1810                                 calculateCenterCursor2D(t, r_center);
1811                         else if (t->spacetype == SPACE_IPO)
1812                                 calculateCenterCursorGraph2D(t, r_center);
1813                         else
1814                                 calculateCenterCursor(t, r_center);
1815                         break;
1816                 case V3D_AROUND_LOCAL_ORIGINS:
1817                         /* Individual element center uses median center for helpline and such */
1818                         calculateCenterMedian(t, r_center);
1819                         break;
1820                 case V3D_AROUND_ACTIVE:
1821                 {
1822                         if (calculateCenterActive(t, false, r_center)) {
1823                                 /* pass */
1824                         }
1825                         else {
1826                                 /* fallback */
1827                                 calculateCenterMedian(t, r_center);
1828                         }
1829                         break;
1830                 }
1831         }
1832 }
1833
1834 void calculateCenter(TransInfo *t)
1835 {
1836         calculateCenter_FromAround(t, t->around, t->center);
1837         calculateCenterGlobal(t, t->center, t->center_global);
1838
1839         /* avoid calculating again */
1840         {
1841                 TransCenterData *cd = &t->center_cache[t->around];
1842                 copy_v3_v3(cd->local, t->center);
1843                 copy_v3_v3(cd->global, t->center_global);
1844                 cd->is_set = true;
1845         }
1846
1847         calculateCenter2D(t);
1848
1849         /* for panning from cameraview */
1850         if (t->flag & T_OBJECT) {
1851                 if (t->spacetype == SPACE_VIEW3D && t->ar && t->ar->regiontype == RGN_TYPE_WINDOW) {
1852                         
1853                         if (t->flag & T_CAMERA) {
1854                                 float axis[3];
1855                                 /* persinv is nasty, use viewinv instead, always right */
1856                                 copy_v3_v3(axis, t->viewinv[2]);
1857                                 normalize_v3(axis);
1858                                 
1859                                 /* 6.0 = 6 grid units */
1860                                 axis[0] = t->center[0] - 6.0f * axis[0];
1861                                 axis[1] = t->center[1] - 6.0f * axis[1];
1862                                 axis[2] = t->center[2] - 6.0f * axis[2];
1863                                 
1864                                 projectFloatView(t, axis, t->center2d);
1865                                 
1866                                 /* rotate only needs correct 2d center, grab needs ED_view3d_calc_zfac() value */
1867                                 if (t->mode == TFM_TRANSLATION) {
1868                                         copy_v3_v3(t->center, axis);
1869                                         copy_v3_v3(t->center_global, t->center);
1870                                 }
1871                         }
1872                 }
1873         }
1874         
1875         if (t->spacetype == SPACE_VIEW3D) {
1876                 /* ED_view3d_calc_zfac() defines a factor for perspective depth correction, used in ED_view3d_win_to_delta() */
1877                 float vec[3];
1878                 if (t->flag & (T_EDIT | T_POSE)) {
1879                         Object *ob = t->obedit ? t->obedit : t->poseobj;
1880                         mul_v3_m4v3(vec, ob->obmat, t->center);
1881                 }
1882                 else {
1883                         copy_v3_v3(vec, t->center);
1884                 }
1885
1886                 /* zfac is only used convertViewVec only in cases operator was invoked in RGN_TYPE_WINDOW
1887                  * and never used in other cases.
1888                  *
1889                  * We need special case here as well, since ED_view3d_calc_zfac will crash when called
1890                  * for a region different from RGN_TYPE_WINDOW.
1891                  */
1892                 if (t->ar->regiontype == RGN_TYPE_WINDOW) {
1893                         t->zfac = ED_view3d_calc_zfac(t->ar->regiondata, vec, NULL);
1894                 }
1895                 else {
1896                         t->zfac = 0.0f;
1897                 }
1898         }
1899 }
1900
1901 BLI_STATIC_ASSERT(ARRAY_SIZE(((TransInfo *)NULL)->center_cache) == (V3D_AROUND_ACTIVE + 1), "test size");
1902
1903 /**
1904  * Lazy initialize transform center data, when we need to access center values from other types.
1905  */
1906 const TransCenterData *transformCenter_from_type(TransInfo *t, int around)
1907 {
1908         BLI_assert(around <= V3D_AROUND_ACTIVE);
1909         TransCenterData *cd = &t->center_cache[around];
1910         if (cd->is_set == false) {
1911                 calculateCenter_FromAround(t, around, cd->local);
1912                 calculateCenterGlobal(t, cd->local, cd->global);
1913                 cd->is_set = true;
1914         }
1915         return cd;
1916 }
1917
1918 void calculatePropRatio(TransInfo *t)
1919 {
1920         TransData *td = t->data;
1921         int i;
1922         float dist;
1923         const bool connected = (t->flag & T_PROP_CONNECTED) != 0;
1924
1925         t->proptext[0] = '\0';
1926
1927         if (t->flag & T_PROP_EDIT) {
1928                 const char *pet_id = NULL;
1929                 for (i = 0; i < t->total; i++, td++) {
1930                         if (td->flag & TD_SELECTED) {
1931                                 td->factor = 1.0f;
1932                         }
1933                         else if (t->flag & T_MIRROR && td->loc[0] * t->mirror < -0.00001f) {
1934                                 td->flag |= TD_SKIP;
1935                                 td->factor = 0.0f;
1936                                 restoreElement(td);
1937                         }
1938                         else if ((connected && (td->flag & TD_NOTCONNECTED || td->dist > t->prop_size)) ||
1939                                  (connected == 0 && td->rdist > t->prop_size))
1940                         {
1941                                 /*
1942                                  * The elements are sorted according to their dist member in the array,
1943                                  * that means we can stop when it finds one element outside of the propsize.
1944                                  * do not set 'td->flag |= TD_NOACTION', the prop circle is being changed.
1945                                  */
1946                                 
1947                                 td->factor = 0.0f;
1948                                 restoreElement(td);
1949                         }
1950                         else {
1951                                 /* Use rdist for falloff calculations, it is the real distance */
1952                                 td->flag &= ~TD_NOACTION;
1953                                 
1954                                 if (connected)
1955                                         dist = (t->prop_size - td->dist) / t->prop_size;
1956                                 else
1957                                         dist = (t->prop_size - td->rdist) / t->prop_size;
1958
1959                                 /*
1960                                  * Clamp to positive numbers.
1961                                  * Certain corner cases with connectivity and individual centers
1962                                  * can give values of rdist larger than propsize.
1963                                  */
1964                                 if (dist < 0.0f)
1965                                         dist = 0.0f;
1966                                 
1967                                 switch (t->prop_mode) {
1968                                         case PROP_SHARP:
1969                                                 td->factor = dist * dist;
1970                                                 break;
1971                                         case PROP_SMOOTH:
1972                                                 td->factor = 3.0f * dist * dist - 2.0f * dist * dist * dist;
1973                                                 break;
1974                                         case PROP_ROOT:
1975                                                 td->factor = sqrtf(dist);
1976                                                 break;
1977                                         case PROP_LIN:
1978                                                 td->factor = dist;
1979                                                 break;
1980                                         case PROP_CONST:
1981                                                 td->factor = 1.0f;
1982                                                 break;
1983                                         case PROP_SPHERE:
1984                                                 td->factor = sqrtf(2 * dist - dist * dist);
1985                                                 break;
1986                                         case PROP_RANDOM:
1987                                                 td->factor = BLI_frand() * dist;
1988                                                 break;
1989                                         case PROP_INVSQUARE:
1990                                                 td->factor = dist * (2.0f - dist);
1991                                                 break;
1992                                         default:
1993                                                 td->factor = 1;
1994                                                 break;
1995                                 }
1996                         }
1997                 }
1998                 switch (t->prop_mode) {
1999                         case PROP_SHARP:
2000                                 pet_id = N_("(Sharp)");
2001                                 break;
2002                         case PROP_SMOOTH:
2003                                 pet_id = N_("(Smooth)");
2004                                 break;
2005                         case PROP_ROOT:
2006                                 pet_id = N_("(Root)");
2007                                 break;
2008                         case PROP_LIN:
2009                                 pet_id = N_("(Linear)");
2010                                 break;
2011                         case PROP_CONST:
2012                                 pet_id = N_("(Constant)");
2013                                 break;
2014                         case PROP_SPHERE:
2015                                 pet_id = N_("(Sphere)");
2016                                 break;
2017                         case PROP_RANDOM:
2018                                 pet_id = N_("(Random)");
2019                                 break;
2020                         case PROP_INVSQUARE:
2021                                 pet_id = N_("(InvSquare)");
2022                                 break;
2023                         default:
2024                                 break;
2025                 }
2026
2027                 if (pet_id) {
2028                         BLI_strncpy(t->proptext, IFACE_(pet_id), sizeof(t->proptext));
2029                 }
2030         }
2031         else {
2032                 for (i = 0; i < t->total; i++, td++) {
2033                         td->factor = 1.0;
2034                 }
2035         }
2036 }
2037
2038 /**
2039  * Rotate an element, low level code, ignore protected channels.
2040  * (use for objects or pose-bones)
2041  * Similar to #ElementRotation.
2042  */
2043 void transform_data_ext_rotate(TransData *td, float mat[3][3], bool use_drot)
2044 {
2045         float totmat[3][3];
2046         float smat[3][3];
2047         float fmat[3][3];
2048         float obmat[3][3];
2049
2050         float dmat[3][3];  /* delta rotation */
2051         float dmat_inv[3][3];
2052
2053         mul_m3_m3m3(totmat, mat, td->mtx);
2054         mul_m3_m3m3(smat, td->smtx, mat);
2055
2056         /* logic from BKE_object_rot_to_mat3 */
2057         if (use_drot) {
2058                 if (td->ext->rotOrder > 0) {
2059                         eulO_to_mat3(dmat, td->ext->drot, td->ext->rotOrder);
2060                 }
2061                 else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2062 #if 0
2063                         axis_angle_to_mat3(dmat, td->ext->drotAxis, td->ext->drotAngle);
2064 #else
2065                         unit_m3(dmat);
2066 #endif
2067                 }
2068                 else {
2069                         float tquat[4];
2070                         normalize_qt_qt(tquat, td->ext->dquat);
2071                         quat_to_mat3(dmat, tquat);
2072                 }
2073
2074                 invert_m3_m3(dmat_inv, dmat);
2075         }
2076
2077
2078         if (td->ext->rotOrder == ROT_MODE_QUAT) {
2079                 float quat[4];
2080
2081                 /* calculate the total rotatation */
2082                 quat_to_mat3(obmat, td->ext->iquat);
2083                 if (use_drot) {
2084                         mul_m3_m3m3(obmat, dmat, obmat);
2085                 }
2086
2087                 /* mat = transform, obmat = object rotation */
2088                 mul_m3_m3m3(fmat, smat, obmat);
2089
2090                 if (use_drot) {
2091                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2092                 }
2093
2094                 mat3_to_quat(quat, fmat);
2095
2096                 /* apply */
2097                 copy_qt_qt(td->ext->quat, quat);
2098         }
2099         else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2100                 float axis[3], angle;
2101
2102                 /* calculate the total rotatation */
2103                 axis_angle_to_mat3(obmat, td->ext->irotAxis, td->ext->irotAngle);
2104                 if (use_drot) {
2105                         mul_m3_m3m3(obmat, dmat, obmat);
2106                 }
2107
2108                 /* mat = transform, obmat = object rotation */
2109                 mul_m3_m3m3(fmat, smat, obmat);
2110
2111                 if (use_drot) {
2112                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2113                 }
2114
2115                 mat3_to_axis_angle(axis, &angle, fmat);
2116
2117                 /* apply */
2118                 copy_v3_v3(td->ext->rotAxis, axis);
2119                 *td->ext->rotAngle = angle;
2120         }
2121         else {
2122                 float eul[3];
2123
2124                 /* calculate the total rotatation */
2125                 eulO_to_mat3(obmat, td->ext->irot, td->ext->rotOrder);
2126                 if (use_drot) {
2127                         mul_m3_m3m3(obmat, dmat, obmat);
2128                 }
2129
2130                 /* mat = transform, obmat = object rotation */
2131                 mul_m3_m3m3(fmat, smat, obmat);
2132
2133                 if (use_drot) {
2134                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2135                 }
2136
2137                 mat3_to_compatible_eulO(eul, td->ext->rot, td->ext->rotOrder, fmat);
2138
2139                 /* apply */
2140                 copy_v3_v3(td->ext->rot, eul);
2141         }
2142 }
2143