Merge branch 'master' into blender2.8
[blender.git] / source / blender / editors / transform / transform_generics.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
19  * All rights reserved.
20  *
21  * The Original Code is: all of this file.
22  *
23  * Contributor(s): none yet.
24  *
25  * ***** END GPL LICENSE BLOCK *****
26  */
27
28 /** \file blender/editors/transform/transform_generics.c
29  *  \ingroup edtransform
30  */
31
32 #include <string.h>
33 #include <math.h>
34
35 #include "MEM_guardedalloc.h"
36
37 #include "BLI_sys_types.h" /* for intptr_t support */
38
39 #include "DNA_anim_types.h"
40 #include "DNA_armature_types.h"
41 #include "DNA_brush_types.h"
42 #include "DNA_gpencil_types.h"
43 #include "DNA_lattice_types.h"
44 #include "DNA_screen_types.h"
45 #include "DNA_sequence_types.h"
46 #include "DNA_space_types.h"
47 #include "DNA_scene_types.h"
48 #include "DNA_object_types.h"
49 #include "DNA_mesh_types.h"
50 #include "DNA_view3d_types.h"
51 #include "DNA_modifier_types.h"
52 #include "DNA_movieclip_types.h"
53 #include "DNA_mask_types.h"
54 #include "DNA_meta_types.h"
55
56 #include "BLI_math.h"
57 #include "BLI_blenlib.h"
58 #include "BLI_rand.h"
59 #include "BLI_utildefines.h"
60
61 #include "PIL_time.h"
62
63 #include "BLT_translation.h"
64
65 #include "RNA_access.h"
66
67 #include "GPU_immediate.h"
68 #include "GPU_matrix.h"
69
70 #include "BIK_api.h"
71
72 #include "BKE_action.h"
73 #include "BKE_animsys.h"
74 #include "BKE_armature.h"
75 #include "BKE_context.h"
76 #include "BKE_curve.h"
77 #include "BKE_editmesh.h"
78 #include "BKE_fcurve.h"
79 #include "BKE_gpencil.h"
80 #include "BKE_lattice.h"
81 #include "BKE_layer.h"
82 #include "BKE_library.h"
83 #include "BKE_mask.h"
84 #include "BKE_nla.h"
85 #include "BKE_paint.h"
86 #include "BKE_scene.h"
87 #include "BKE_sequencer.h"
88 #include "BKE_tracking.h"
89 #include "BKE_workspace.h"
90
91 #include "DEG_depsgraph.h"
92
93 #include "ED_anim_api.h"
94 #include "ED_armature.h"
95 #include "ED_image.h"
96 #include "ED_keyframing.h"
97 #include "ED_markers.h"
98 #include "ED_mesh.h"
99 #include "ED_object.h"
100 #include "ED_particle.h"
101 #include "ED_screen_types.h"
102 #include "ED_space_api.h"
103 #include "ED_uvedit.h"
104 #include "ED_view3d.h"
105 #include "ED_curve.h" /* for curve_editnurbs */
106 #include "ED_clip.h"
107 #include "ED_screen.h"
108 #include "ED_gpencil.h"
109
110 #include "WM_types.h"
111 #include "WM_api.h"
112
113 #include "RE_engine.h"
114
115 #include "UI_resources.h"
116 #include "UI_view2d.h"
117
118 #include "transform.h"
119
120 /* ************************** Functions *************************** */
121
122 void getViewVector(const TransInfo *t, const float coord[3], float vec[3])
123 {
124         if (t->persp != RV3D_ORTHO) {
125                 sub_v3_v3v3(vec, coord, t->viewinv[3]);
126         }
127         else {
128                 copy_v3_v3(vec, t->viewinv[2]);
129         }
130         normalize_v3(vec);
131 }
132
133 /* ************************** GENERICS **************************** */
134
135
136 static void clipMirrorModifier(TransInfo *t)
137 {
138         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
139                 Object *ob = tc->obedit;
140                 ModifierData *md = ob->modifiers.first;
141                 float tolerance[3] = {0.0f, 0.0f, 0.0f};
142                 int axis = 0;
143
144                 for (; md; md = md->next) {
145                         if ((md->type == eModifierType_Mirror) && (md->mode & eModifierMode_Realtime)) {
146                                 MirrorModifierData *mmd = (MirrorModifierData *) md;
147
148                                 if (mmd->flag & MOD_MIR_CLIPPING) {
149                                         axis = 0;
150                                         if (mmd->flag & MOD_MIR_AXIS_X) {
151                                                 axis |= 1;
152                                                 tolerance[0] = mmd->tolerance;
153                                         }
154                                         if (mmd->flag & MOD_MIR_AXIS_Y) {
155                                                 axis |= 2;
156                                                 tolerance[1] = mmd->tolerance;
157                                         }
158                                         if (mmd->flag & MOD_MIR_AXIS_Z) {
159                                                 axis |= 4;
160                                                 tolerance[2] = mmd->tolerance;
161                                         }
162                                         if (axis) {
163                                                 float mtx[4][4], imtx[4][4];
164                                                 int i;
165
166                                                 if (mmd->mirror_ob) {
167                                                         float obinv[4][4];
168
169                                                         invert_m4_m4(obinv, mmd->mirror_ob->obmat);
170                                                         mul_m4_m4m4(mtx, obinv, ob->obmat);
171                                                         invert_m4_m4(imtx, mtx);
172                                                 }
173
174                                                 TransData *td = tc->data;
175                                                 for (i = 0; i < tc->data_len; i++, td++) {
176                                                         int clip;
177                                                         float loc[3], iloc[3];
178
179                                                         if (td->flag & TD_NOACTION)
180                                                                 break;
181                                                         if (td->loc == NULL)
182                                                                 break;
183
184                                                         if (td->flag & TD_SKIP)
185                                                                 continue;
186
187                                                         copy_v3_v3(loc,  td->loc);
188                                                         copy_v3_v3(iloc, td->iloc);
189
190                                                         if (mmd->mirror_ob) {
191                                                                 mul_m4_v3(mtx, loc);
192                                                                 mul_m4_v3(mtx, iloc);
193                                                         }
194
195                                                         clip = 0;
196                                                         if (axis & 1) {
197                                                                 if (fabsf(iloc[0]) <= tolerance[0] ||
198                                                                     loc[0] * iloc[0] < 0.0f)
199                                                                 {
200                                                                         loc[0] = 0.0f;
201                                                                         clip = 1;
202                                                                 }
203                                                         }
204
205                                                         if (axis & 2) {
206                                                                 if (fabsf(iloc[1]) <= tolerance[1] ||
207                                                                     loc[1] * iloc[1] < 0.0f)
208                                                                 {
209                                                                         loc[1] = 0.0f;
210                                                                         clip = 1;
211                                                                 }
212                                                         }
213                                                         if (axis & 4) {
214                                                                 if (fabsf(iloc[2]) <= tolerance[2] ||
215                                                                     loc[2] * iloc[2] < 0.0f)
216                                                                 {
217                                                                         loc[2] = 0.0f;
218                                                                         clip = 1;
219                                                                 }
220                                                         }
221                                                         if (clip) {
222                                                                 if (mmd->mirror_ob) {
223                                                                         mul_m4_v3(imtx, loc);
224                                                                 }
225                                                                 copy_v3_v3(td->loc, loc);
226                                                         }
227                                                 }
228                                         }
229
230                                 }
231                         }
232                 }
233         }
234 }
235
236 /* assumes obedit set to mesh object */
237 static void editbmesh_apply_to_mirror(TransInfo *t)
238 {
239         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
240                 TransData *td = tc->data;
241                 BMVert *eve;
242                 int i;
243
244                 for (i = 0; i < tc->data_len; i++, td++) {
245                         if (td->flag & TD_NOACTION)
246                                 break;
247                         if (td->loc == NULL)
248                                 break;
249                         if (td->flag & TD_SKIP)
250                                 continue;
251
252                         eve = td->extra;
253                         if (eve) {
254                                 eve->co[0] = -td->loc[0];
255                                 eve->co[1] = td->loc[1];
256                                 eve->co[2] = td->loc[2];
257                         }
258
259                         if (td->flag & TD_MIRROR_EDGE) {
260                                 td->loc[0] = 0;
261                         }
262                 }
263         }
264 }
265
266 /* for the realtime animation recording feature, handle overlapping data */
267 static void animrecord_check_state(Scene *scene, ID *id, wmTimer *animtimer)
268 {
269         ScreenAnimData *sad = (animtimer) ? animtimer->customdata : NULL;
270
271         /* sanity checks */
272         if (ELEM(NULL, scene, id, sad))
273                 return;
274
275         /* check if we need a new strip if:
276          * - if animtimer is running
277          * - we're not only keying for available channels
278          * - the option to add new actions for each round is not enabled
279          */
280         if (IS_AUTOKEY_FLAG(scene, INSERTAVAIL) == 0 && (scene->toolsettings->autokey_flag & ANIMRECORD_FLAG_WITHNLA)) {
281                 /* if playback has just looped around, we need to add a new NLA track+strip to allow a clean pass to occur */
282                 if ((sad) && (sad->flag & ANIMPLAY_FLAG_JUMPED)) {
283                         AnimData *adt = BKE_animdata_from_id(id);
284                         const bool is_first = (adt) && (adt->nla_tracks.first == NULL);
285
286                         /* perform push-down manually with some differences
287                          * NOTE: BKE_nla_action_pushdown() sync warning...
288                          */
289                         if ((adt->action) && !(adt->flag & ADT_NLA_EDIT_ON)) {
290                                 float astart, aend;
291
292                                 /* only push down if action is more than 1-2 frames long */
293                                 calc_action_range(adt->action, &astart, &aend, 1);
294                                 if (aend > astart + 2.0f) {
295                                         NlaStrip *strip = BKE_nlastack_add_strip(adt, adt->action);
296
297                                         /* clear reference to action now that we've pushed it onto the stack */
298                                         id_us_min(&adt->action->id);
299                                         adt->action = NULL;
300
301                                         /* adjust blending + extend so that they will behave correctly */
302                                         strip->extendmode = NLASTRIP_EXTEND_NOTHING;
303                                         strip->flag &= ~(NLASTRIP_FLAG_AUTO_BLENDS | NLASTRIP_FLAG_SELECT | NLASTRIP_FLAG_ACTIVE);
304
305                                         /* copy current "action blending" settings from adt to the strip,
306                                          * as it was keyframed with these settings, so omitting them will
307                                          * change the effect  [T54766]
308                                          */
309                                         if (is_first == false) {
310                                                 strip->blendmode = adt->act_blendmode;
311                                                 strip->influence = adt->act_influence;
312
313                                                 if (adt->act_influence < 1.0f) {
314                                                         /* enable "user-controlled" influence (which will insert a default keyframe)
315                                                          * so that the influence doesn't get lost on the new update
316                                                          *
317                                                          * NOTE: An alternative way would have been to instead hack the influence
318                                                          * to not get always get reset to full strength if NLASTRIP_FLAG_USR_INFLUENCE
319                                                          * is disabled but auto-blending isn't being used. However, that approach
320                                                          * is a bit hacky/hard to discover, and may cause backwards compatibility issues,
321                                                          * so it's better to just do it this way.
322                                                          */
323                                                         strip->flag |= NLASTRIP_FLAG_USR_INFLUENCE;
324                                                         BKE_nlastrip_validate_fcurves(strip);
325                                                 }
326                                         }
327
328                                         /* also, adjust the AnimData's action extend mode to be on
329                                          * 'nothing' so that previous result still play
330                                          */
331                                         adt->act_extendmode = NLASTRIP_EXTEND_NOTHING;
332                                 }
333                         }
334                 }
335         }
336 }
337
338 static bool fcu_test_selected(FCurve *fcu)
339 {
340         BezTriple *bezt = fcu->bezt;
341         unsigned int i;
342
343         if (bezt == NULL) /* ignore baked */
344                 return 0;
345
346         for (i = 0; i < fcu->totvert; i++, bezt++) {
347                 if (BEZT_ISSEL_ANY(bezt)) return 1;
348         }
349
350         return 0;
351 }
352
353 /* helper for recalcData() - for Action Editor transforms */
354 static void recalcData_actedit(TransInfo *t)
355 {
356         ViewLayer *view_layer = t->view_layer;
357         SpaceAction *saction = (SpaceAction *)t->sa->spacedata.first;
358
359         bAnimContext ac = {NULL};
360         ListBase anim_data = {NULL, NULL};
361         bAnimListElem *ale;
362         int filter;
363
364         /* initialize relevant anim-context 'context' data from TransInfo data */
365         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
366         ac.bmain = CTX_data_main(t->context);
367         ac.scene = t->scene;
368         ac.view_layer = t->view_layer;
369         ac.obact = OBACT(view_layer);
370         ac.sa = t->sa;
371         ac.ar = t->ar;
372         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
373         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
374         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
375
376         ANIM_animdata_context_getdata(&ac);
377
378         /* perform flush */
379         if (ELEM(ac.datatype, ANIMCONT_GPENCIL, ANIMCONT_MASK)) {
380                 /* flush transform values back to actual coordinates */
381                 flushTransIntFrameActionData(t);
382         }
383
384         if (ac.datatype != ANIMCONT_MASK) {
385                 /* get animdata blocks visible in editor, assuming that these will be the ones where things changed */
386                 filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_ANIMDATA);
387                 ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
388
389                 /* just tag these animdata-blocks to recalc, assuming that some data there changed
390                  * BUT only do this if realtime updates are enabled
391                  */
392                 if ((saction->flag & SACTION_NOREALTIMEUPDATES) == 0) {
393                         for (ale = anim_data.first; ale; ale = ale->next) {
394                                 /* set refresh tags for objects using this animation */
395                                 ANIM_list_elem_update(CTX_data_main(t->context), t->scene, ale);
396                         }
397                 }
398
399                 /* now free temp channels */
400                 ANIM_animdata_freelist(&anim_data);
401         }
402 }
403 /* helper for recalcData() - for Graph Editor transforms */
404 static void recalcData_graphedit(TransInfo *t)
405 {
406         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
407         ViewLayer *view_layer = t->view_layer;
408
409         ListBase anim_data = {NULL, NULL};
410         bAnimContext ac = {NULL};
411         int filter;
412
413         bAnimListElem *ale;
414         int dosort = 0;
415
416         /* initialize relevant anim-context 'context' data from TransInfo data */
417         /* NOTE: sync this with the code in ANIM_animdata_get_context() */
418         ac.bmain = CTX_data_main(t->context);
419         ac.scene = t->scene;
420         ac.view_layer = t->view_layer;
421         ac.obact = OBACT(view_layer);
422         ac.sa = t->sa;
423         ac.ar = t->ar;
424         ac.sl = (t->sa) ? t->sa->spacedata.first : NULL;
425         ac.spacetype = (t->sa) ? t->sa->spacetype : 0;
426         ac.regiontype = (t->ar) ? t->ar->regiontype : 0;
427
428         ANIM_animdata_context_getdata(&ac);
429
430         /* do the flush first */
431         flushTransGraphData(t);
432
433         /* get curves to check if a re-sort is needed */
434         filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_FOREDIT | ANIMFILTER_CURVE_VISIBLE);
435         ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
436
437         /* now test if there is a need to re-sort */
438         for (ale = anim_data.first; ale; ale = ale->next) {
439                 FCurve *fcu = (FCurve *)ale->key_data;
440
441                 /* ignore FC-Curves without any selected verts */
442                 if (!fcu_test_selected(fcu))
443                         continue;
444
445                 /* watch it: if the time is wrong: do not correct handles yet */
446                 if (test_time_fcurve(fcu))
447                         dosort++;
448                 else
449                         calchandles_fcurve(fcu);
450
451                 /* set refresh tags for objects using this animation,
452                  * BUT only if realtime updates are enabled
453                  */
454                 if ((sipo->flag & SIPO_NOREALTIMEUPDATES) == 0)
455                         ANIM_list_elem_update(CTX_data_main(t->context), t->scene, ale);
456         }
457
458         /* do resort and other updates? */
459         if (dosort) remake_graph_transdata(t, &anim_data);
460
461         /* now free temp channels */
462         ANIM_animdata_freelist(&anim_data);
463 }
464
465 /* helper for recalcData() - for NLA Editor transforms */
466 static void recalcData_nla(TransInfo *t)
467 {
468         SpaceNla *snla = (SpaceNla *)t->sa->spacedata.first;
469         Scene *scene = t->scene;
470         double secf = FPS;
471         int i;
472
473         TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
474         TransDataNla *tdn = tc->custom.type.data;
475
476         /* for each strip we've got, perform some additional validation of the values that got set before
477          * using RNA to set the value (which does some special operations when setting these values to make
478          * sure that everything works ok)
479          */
480         for (i = 0; i < tc->data_len; i++, tdn++) {
481                 NlaStrip *strip = tdn->strip;
482                 PointerRNA strip_ptr;
483                 short pExceeded, nExceeded, iter;
484                 int delta_y1, delta_y2;
485
486                 /* if this tdn has no handles, that means it is just a dummy that should be skipped */
487                 if (tdn->handle == 0)
488                         continue;
489
490                 /* set refresh tags for objects using this animation,
491                  * BUT only if realtime updates are enabled
492                  */
493                 if ((snla->flag & SNLA_NOREALTIMEUPDATES) == 0)
494                         ANIM_id_update(CTX_data_main(t->context), tdn->id);
495
496                 /* if canceling transform, just write the values without validating, then move on */
497                 if (t->state == TRANS_CANCEL) {
498                         /* clear the values by directly overwriting the originals, but also need to restore
499                          * endpoints of neighboring transition-strips
500                          */
501
502                         /* start */
503                         strip->start = tdn->h1[0];
504
505                         if ((strip->prev) && (strip->prev->type == NLASTRIP_TYPE_TRANSITION))
506                                 strip->prev->end = tdn->h1[0];
507
508                         /* end */
509                         strip->end = tdn->h2[0];
510
511                         if ((strip->next) && (strip->next->type == NLASTRIP_TYPE_TRANSITION))
512                                 strip->next->start = tdn->h2[0];
513
514                         /* flush transforms to child strips (since this should be a meta) */
515                         BKE_nlameta_flush_transforms(strip);
516
517                         /* restore to original track (if needed) */
518                         if (tdn->oldTrack != tdn->nlt) {
519                                 /* just append to end of list for now, since strips get sorted in special_aftertrans_update() */
520                                 BLI_remlink(&tdn->nlt->strips, strip);
521                                 BLI_addtail(&tdn->oldTrack->strips, strip);
522                         }
523
524                         continue;
525                 }
526
527                 /* firstly, check if the proposed transform locations would overlap with any neighboring strips
528                  * (barring transitions) which are absolute barriers since they are not being moved
529                  *
530                  * this is done as a iterative procedure (done 5 times max for now)
531                  */
532                 for (iter = 0; iter < 5; iter++) {
533                         pExceeded = ((strip->prev) && (strip->prev->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h1[0] < strip->prev->end));
534                         nExceeded = ((strip->next) && (strip->next->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h2[0] > strip->next->start));
535
536                         if ((pExceeded && nExceeded) || (iter == 4)) {
537                                 /* both endpoints exceeded (or iteration ping-pong'd meaning that we need a compromise)
538                                  * - simply crop strip to fit within the bounds of the strips bounding it
539                                  * - if there were no neighbors, clear the transforms (make it default to the strip's current values)
540                                  */
541                                 if (strip->prev && strip->next) {
542                                         tdn->h1[0] = strip->prev->end;
543                                         tdn->h2[0] = strip->next->start;
544                                 }
545                                 else {
546                                         tdn->h1[0] = strip->start;
547                                         tdn->h2[0] = strip->end;
548                                 }
549                         }
550                         else if (nExceeded) {
551                                 /* move backwards */
552                                 float offset = tdn->h2[0] - strip->next->start;
553
554                                 tdn->h1[0] -= offset;
555                                 tdn->h2[0] -= offset;
556                         }
557                         else if (pExceeded) {
558                                 /* more forwards */
559                                 float offset = strip->prev->end - tdn->h1[0];
560
561                                 tdn->h1[0] += offset;
562                                 tdn->h2[0] += offset;
563                         }
564                         else /* all is fine and well */
565                                 break;
566                 }
567
568                 /* handle auto-snapping
569                  * NOTE: only do this when transform is still running, or we can't restore
570                  */
571                 if (t->state != TRANS_CANCEL) {
572                         switch (snla->autosnap) {
573                                 case SACTSNAP_FRAME: /* snap to nearest frame */
574                                 case SACTSNAP_STEP: /* frame step - this is basically the same, since we don't have any remapping going on */
575                                 {
576                                         tdn->h1[0] = floorf(tdn->h1[0] + 0.5f);
577                                         tdn->h2[0] = floorf(tdn->h2[0] + 0.5f);
578                                         break;
579                                 }
580
581                                 case SACTSNAP_SECOND: /* snap to nearest second */
582                                 case SACTSNAP_TSTEP: /* second step - this is basically the same, since we don't have any remapping going on */
583                                 {
584                                         /* This case behaves differently from the rest, since lengths of strips
585                                          * may not be multiples of a second. If we just naively resize adjust
586                                          * the handles, things may not work correctly. Instead, we only snap
587                                          * the first handle, and move the other to fit.
588                                          *
589                                          * FIXME: we do run into problems here when user attempts to negatively
590                                          *        scale the strip, as it then just compresses down and refuses
591                                          *        to expand out the other end.
592                                          */
593                                         float h1_new = (float)(floor(((double)tdn->h1[0] / secf) + 0.5) * secf);
594                                         float delta  = h1_new - tdn->h1[0];
595
596                                         tdn->h1[0] = h1_new;
597                                         tdn->h2[0] += delta;
598                                         break;
599                                 }
600
601                                 case SACTSNAP_MARKER: /* snap to nearest marker */
602                                 {
603                                         tdn->h1[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h1[0]);
604                                         tdn->h2[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h2[0]);
605                                         break;
606                                 }
607                         }
608                 }
609
610                 /* Use RNA to write the values to ensure that constraints on these are obeyed
611                  * (e.g. for transition strips, the values are taken from the neighbors)
612                  *
613                  * NOTE: we write these twice to avoid truncation errors which can arise when
614                  * moving the strips a large distance using numeric input [#33852]
615                  */
616                 RNA_pointer_create(NULL, &RNA_NlaStrip, strip, &strip_ptr);
617
618                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
619                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
620
621                 RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
622                 RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
623
624                 /* flush transforms to child strips (since this should be a meta) */
625                 BKE_nlameta_flush_transforms(strip);
626
627
628                 /* now, check if we need to try and move track
629                  * - we need to calculate both, as only one may have been altered by transform if only 1 handle moved
630                  */
631                 delta_y1 = ((int)tdn->h1[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
632                 delta_y2 = ((int)tdn->h2[1] / NLACHANNEL_STEP(snla) - tdn->trackIndex);
633
634                 if (delta_y1 || delta_y2) {
635                         NlaTrack *track;
636                         int delta = (delta_y2) ? delta_y2 : delta_y1;
637                         int n;
638
639                         /* move in the requested direction, checking at each layer if there's space for strip to pass through,
640                          * stopping on the last track available or that we're able to fit in
641                          */
642                         if (delta > 0) {
643                                 for (track = tdn->nlt->next, n = 0; (track) && (n < delta); track = track->next, n++) {
644                                         /* check if space in this track for the strip */
645                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
646                                                 /* move strip to this track */
647                                                 BLI_remlink(&tdn->nlt->strips, strip);
648                                                 BKE_nlatrack_add_strip(track, strip);
649
650                                                 tdn->nlt = track;
651                                                 tdn->trackIndex++;
652                                         }
653                                         else /* can't move any further */
654                                                 break;
655                                 }
656                         }
657                         else {
658                                 /* make delta 'positive' before using it, since we now know to go backwards */
659                                 delta = -delta;
660
661                                 for (track = tdn->nlt->prev, n = 0; (track) && (n < delta); track = track->prev, n++) {
662                                         /* check if space in this track for the strip */
663                                         if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
664                                                 /* move strip to this track */
665                                                 BLI_remlink(&tdn->nlt->strips, strip);
666                                                 BKE_nlatrack_add_strip(track, strip);
667
668                                                 tdn->nlt = track;
669                                                 tdn->trackIndex--;
670                                         }
671                                         else /* can't move any further */
672                                                 break;
673                                 }
674                         }
675                 }
676         }
677 }
678
679 static void recalcData_mask_common(TransInfo *t)
680 {
681         Mask *mask = CTX_data_edit_mask(t->context);
682
683         flushTransMasking(t);
684
685         DEG_id_tag_update(&mask->id, 0);
686 }
687
688 /* helper for recalcData() - for Image Editor transforms */
689 static void recalcData_image(TransInfo *t)
690 {
691         if (t->options & CTX_MASK) {
692                 recalcData_mask_common(t);
693         }
694         else if (t->options & CTX_PAINT_CURVE) {
695                 flushTransPaintCurve(t);
696         }
697         else if ((t->flag & T_EDIT) && t->obedit_type == OB_MESH) {
698                 SpaceImage *sima = t->sa->spacedata.first;
699
700                 flushTransUVs(t);
701                 if (sima->flag & SI_LIVE_UNWRAP)
702                         ED_uvedit_live_unwrap_re_solve();
703
704                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
705                         if (tc->data_len) {
706                                 DEG_id_tag_update(tc->obedit->data, 0);
707                         }
708                 }
709         }
710 }
711
712 /* helper for recalcData() - for Movie Clip transforms */
713 static void recalcData_spaceclip(TransInfo *t)
714 {
715         SpaceClip *sc = t->sa->spacedata.first;
716
717         if (ED_space_clip_check_show_trackedit(sc)) {
718                 MovieClip *clip = ED_space_clip_get_clip(sc);
719                 ListBase *tracksbase = BKE_tracking_get_active_tracks(&clip->tracking);
720                 MovieTrackingTrack *track;
721                 int framenr = ED_space_clip_get_clip_frame_number(sc);
722
723                 flushTransTracking(t);
724
725                 track = tracksbase->first;
726                 while (track) {
727                         if (TRACK_VIEW_SELECTED(sc, track) && (track->flag & TRACK_LOCKED) == 0) {
728                                 MovieTrackingMarker *marker = BKE_tracking_marker_get(track, framenr);
729
730                                 if (t->mode == TFM_TRANSLATION) {
731                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
732                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
733                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
734                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_POS);
735                                 }
736                                 else if (t->mode == TFM_RESIZE) {
737                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
738                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_DIM);
739                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_SEARCH))
740                                                 BKE_tracking_marker_clamp(marker, CLAMP_SEARCH_DIM);
741                                 }
742                                 else if (t->mode == TFM_ROTATION) {
743                                         if (TRACK_AREA_SELECTED(track, TRACK_AREA_PAT))
744                                                 BKE_tracking_marker_clamp(marker, CLAMP_PAT_POS);
745                                 }
746                         }
747
748                         track = track->next;
749                 }
750
751                 DEG_id_tag_update(&clip->id, 0);
752         }
753         else if (t->options & CTX_MASK) {
754                 recalcData_mask_common(t);
755         }
756 }
757
758 /* helper for recalcData() - for object transforms, typically in the 3D view */
759 static void recalcData_objects(TransInfo *t)
760 {
761         Base *base = t->view_layer->basact;
762
763         if (t->obedit_type != -1) {
764                 if (ELEM(t->obedit_type, OB_CURVE, OB_SURF)) {
765
766                         if (t->state != TRANS_CANCEL) {
767                                 clipMirrorModifier(t);
768                                 applyProject(t);
769                         }
770
771                         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
772                                 Curve *cu = tc->obedit->data;
773                                 ListBase *nurbs = BKE_curve_editNurbs_get(cu);
774                                 Nurb *nu = nurbs->first;
775
776                                 DEG_id_tag_update(tc->obedit->data, 0);  /* sets recalc flags */
777
778                                 if (t->state == TRANS_CANCEL) {
779                                         while (nu) {
780                                                 BKE_nurb_handles_calc(nu); /* Cant do testhandlesNurb here, it messes up the h1 and h2 flags */
781                                                 nu = nu->next;
782                                         }
783                                 }
784                                 else {
785                                         /* Normal updating */
786                                         while (nu) {
787                                                 BKE_nurb_test_2d(nu);
788                                                 BKE_nurb_handles_calc(nu);
789                                                 nu = nu->next;
790                                         }
791                                 }
792                         }
793                 }
794                 else if (t->obedit_type == OB_LATTICE) {
795
796                         if (t->state != TRANS_CANCEL) {
797                                 applyProject(t);
798                         }
799
800                         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
801                                 Lattice *la = tc->obedit->data;
802                                 DEG_id_tag_update(tc->obedit->data, 0);  /* sets recalc flags */
803                                 if (la->editlatt->latt->flag & LT_OUTSIDE) {
804                                         outside_lattice(la->editlatt->latt);
805                                 }
806                         }
807                 }
808                 else if (t->obedit_type == OB_MESH) {
809                         /* mirror modifier clipping? */
810                         if (t->state != TRANS_CANCEL) {
811                                 /* apply clipping after so we never project past the clip plane [#25423] */
812                                 applyProject(t);
813                                 clipMirrorModifier(t);
814                         }
815                         if ((t->options & CTX_NO_MIRROR) == 0 && (t->flag & T_MIRROR))
816                                 editbmesh_apply_to_mirror(t);
817
818                         if (t->mode == TFM_EDGE_SLIDE) {
819                                 projectEdgeSlideData(t, false);
820                         }
821                         else if (t->mode == TFM_VERT_SLIDE) {
822                                 projectVertSlideData(t, false);
823                         }
824
825                         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
826                                 DEG_id_tag_update(tc->obedit->data, 0);  /* sets recalc flags */
827                                 BMEditMesh *em = BKE_editmesh_from_object(tc->obedit);
828                                 EDBM_mesh_normals_update(em);
829                                 BKE_editmesh_tessface_calc(em);
830                         }
831                 }
832                 else if (t->obedit_type == OB_ARMATURE) { /* no recalc flag, does pose */
833
834                         if (t->state != TRANS_CANCEL) {
835                                 applyProject(t);
836                         }
837
838                         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
839                                 bArmature *arm = tc->obedit->data;
840                                 ListBase *edbo = arm->edbo;
841                                 EditBone *ebo, *ebo_parent;
842                                 TransData *td = tc->data;
843                                 int i;
844
845                                 /* Ensure all bones are correctly adjusted */
846                                 for (ebo = edbo->first; ebo; ebo = ebo->next) {
847                                         ebo_parent = (ebo->flag & BONE_CONNECTED) ? ebo->parent : NULL;
848
849                                         if (ebo_parent) {
850                                                 /* If this bone has a parent tip that has been moved */
851                                                 if (ebo_parent->flag & BONE_TIPSEL) {
852                                                         copy_v3_v3(ebo->head, ebo_parent->tail);
853                                                         if (t->mode == TFM_BONE_ENVELOPE) ebo->rad_head = ebo_parent->rad_tail;
854                                                 }
855                                                 /* If this bone has a parent tip that has NOT been moved */
856                                                 else {
857                                                         copy_v3_v3(ebo_parent->tail, ebo->head);
858                                                         if (t->mode == TFM_BONE_ENVELOPE) ebo_parent->rad_tail = ebo->rad_head;
859                                                 }
860                                         }
861
862                                         /* on extrude bones, oldlength==0.0f, so we scale radius of points */
863                                         ebo->length = len_v3v3(ebo->head, ebo->tail);
864                                         if (ebo->oldlength == 0.0f) {
865                                                 ebo->rad_head = 0.25f * ebo->length;
866                                                 ebo->rad_tail = 0.10f * ebo->length;
867                                                 ebo->dist = 0.25f * ebo->length;
868                                                 if (ebo->parent) {
869                                                         if (ebo->rad_head > ebo->parent->rad_tail)
870                                                                 ebo->rad_head = ebo->parent->rad_tail;
871                                                 }
872                                         }
873                                         else if (t->mode != TFM_BONE_ENVELOPE) {
874                                                 /* if bones change length, lets do that for the deform distance as well */
875                                                 ebo->dist *= ebo->length / ebo->oldlength;
876                                                 ebo->rad_head *= ebo->length / ebo->oldlength;
877                                                 ebo->rad_tail *= ebo->length / ebo->oldlength;
878                                                 ebo->oldlength = ebo->length;
879
880                                                 if (ebo_parent) {
881                                                         ebo_parent->rad_tail = ebo->rad_head;
882                                                 }
883                                         }
884                                 }
885
886                                 if (!ELEM(t->mode, TFM_BONE_ROLL, TFM_BONE_ENVELOPE, TFM_BONE_ENVELOPE_DIST, TFM_BONESIZE)) {
887                                         /* fix roll */
888                                         for (i = 0; i < tc->data_len; i++, td++) {
889                                                 if (td->extra) {
890                                                         float vec[3], up_axis[3];
891                                                         float qrot[4];
892                                                         float roll;
893
894                                                         ebo = td->extra;
895
896                                                         if (t->state == TRANS_CANCEL) {
897                                                                 /* restore roll */
898                                                                 ebo->roll = td->ival;
899                                                         }
900                                                         else {
901                                                                 copy_v3_v3(up_axis, td->axismtx[2]);
902
903                                                                 sub_v3_v3v3(vec, ebo->tail, ebo->head);
904                                                                 normalize_v3(vec);
905                                                                 rotation_between_vecs_to_quat(qrot, td->axismtx[1], vec);
906                                                                 mul_qt_v3(qrot, up_axis);
907
908                                                                 /* roll has a tendency to flip in certain orientations - [#34283], [#33974] */
909                                                                 roll = ED_armature_ebone_roll_to_vector(ebo, up_axis, false);
910                                                                 ebo->roll = angle_compat_rad(roll, td->ival);
911                                                         }
912                                                 }
913                                         }
914                                 }
915
916                                 if (arm->flag & ARM_MIRROR_EDIT) {
917                                         if (t->state != TRANS_CANCEL) {
918                                                 ED_armature_edit_transform_mirror_update(tc->obedit);
919                                         }
920                                         else {
921                                                 restoreBones(tc);
922                                         }
923                                 }
924                         }
925                 }
926                 else {
927                         if (t->state != TRANS_CANCEL) {
928                                 applyProject(t);
929                         }
930                         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
931                                 if (tc->data_len) {
932                                         DEG_id_tag_update(tc->obedit->data, 0);  /* sets recalc flags */
933                                 }
934                         }
935                 }
936
937         }
938         else if (t->flag & T_POSE) {
939                 GSet *motionpath_updates = BLI_gset_ptr_new("motionpath updates");
940
941                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
942                         Object *ob = tc->poseobj;
943                         bArmature *arm = ob->data;
944
945                         /* if animtimer is running, and the object already has animation data,
946                          * check if the auto-record feature means that we should record 'samples'
947                          * (i.e. uneditable animation values)
948                          *
949                          * context is needed for keying set poll() functions.
950                          */
951                         // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
952                         if ((t->animtimer) && (t->context) && IS_AUTOKEY_ON(t->scene)) {
953                                 int targetless_ik = (t->flag & T_AUTOIK); // XXX this currently doesn't work, since flags aren't set yet!
954
955                                 animrecord_check_state(t->scene, &ob->id, t->animtimer);
956                                 autokeyframe_pose(t->context, t->scene, ob, t->mode, targetless_ik);
957                         }
958
959                         if (motionpath_need_update_pose(t->scene, ob)) {
960                                 BLI_gset_insert(motionpath_updates, ob);
961                         }
962
963                         /* old optimize trick... this enforces to bypass the depgraph */
964                         if (!(arm->flag & ARM_DELAYDEFORM)) {
965                                 DEG_id_tag_update(&ob->id, OB_RECALC_DATA);  /* sets recalc flags */
966                                 /* transformation of pose may affect IK tree, make sure it is rebuilt */
967                                 BIK_clear_data(ob->pose);
968                         }
969                         else {
970                                 BKE_pose_where_is(t->depsgraph, t->scene, ob);
971                         }
972                 }
973
974                 /* Update motion paths once for all transformed bones in an object. */
975                 GSetIterator gs_iter;
976                 GSET_ITER (gs_iter, motionpath_updates) {
977                         Object *ob = BLI_gsetIterator_getKey(&gs_iter);
978                         ED_pose_recalculate_paths(t->context, t->scene, ob, true);
979                 }
980                 BLI_gset_free(motionpath_updates, NULL);
981         }
982         else if (base && (base->object->mode & OB_MODE_PARTICLE_EDIT) &&
983                  PE_get_current(t->scene, base->object))
984         {
985                 if (t->state != TRANS_CANCEL) {
986                         applyProject(t);
987                 }
988                 flushTransParticles(t);
989         }
990         else {
991                 bool motionpath_update = false;
992
993                 if (t->state != TRANS_CANCEL) {
994                         applyProject(t);
995                 }
996
997                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
998                         TransData *td = tc->data;
999
1000                         for (int i = 0; i < tc->data_len; i++, td++) {
1001                                 Object *ob = td->ob;
1002
1003                                 if (td->flag & TD_NOACTION)
1004                                         break;
1005
1006                                 if (td->flag & TD_SKIP)
1007                                         continue;
1008
1009                                 /* if animtimer is running, and the object already has animation data,
1010                                  * check if the auto-record feature means that we should record 'samples'
1011                                  * (i.e. uneditable animation values)
1012                                  */
1013                                 // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
1014                                 if ((t->animtimer) && IS_AUTOKEY_ON(t->scene)) {
1015                                         animrecord_check_state(t->scene, &ob->id, t->animtimer);
1016                                         autokeyframe_object(t->context, t->scene, t->view_layer, ob, t->mode);
1017                                 }
1018
1019                                 motionpath_update |= motionpath_need_update_object(t->scene, ob);
1020
1021                                 /* sets recalc flags fully, instead of flushing existing ones
1022                                  * otherwise proxies don't function correctly
1023                                  */
1024                                 DEG_id_tag_update(&ob->id, OB_RECALC_OB);
1025
1026                                 if (t->flag & T_TEXTURE)
1027                                         DEG_id_tag_update(&ob->id, OB_RECALC_DATA);
1028                         }
1029                 }
1030
1031                 if (motionpath_update) {
1032                         /* Update motion paths once for all transformed objects. */
1033                         ED_objects_recalculate_paths(t->context, t->scene, true);
1034                 }
1035         }
1036 }
1037
1038 static void recalcData_cursor(TransInfo *t)
1039 {
1040         DEG_id_tag_update(&t->scene->id, DEG_TAG_COPY_ON_WRITE);
1041 }
1042
1043 /* helper for recalcData() - for sequencer transforms */
1044 static void recalcData_sequencer(TransInfo *t)
1045 {
1046         TransData *td;
1047         int a;
1048         Sequence *seq_prev = NULL;
1049
1050         TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
1051
1052         for (a = 0, td = tc->data; a < tc->data_len; a++, td++) {
1053                 TransDataSeq *tdsq = (TransDataSeq *) td->extra;
1054                 Sequence *seq = tdsq->seq;
1055
1056                 if (seq != seq_prev) {
1057                         if (BKE_sequence_tx_fullupdate_test(seq)) {
1058                                 /* A few effect strip types need a complete recache on transform. */
1059                                 BKE_sequence_invalidate_cache(t->scene, seq);
1060                         }
1061                         else {
1062                                 BKE_sequence_invalidate_dependent(t->scene, seq);
1063                         }
1064                 }
1065
1066                 seq_prev = seq;
1067         }
1068
1069         BKE_sequencer_preprocessed_cache_cleanup();
1070
1071         flushTransSeq(t);
1072 }
1073
1074 /* force recalculation of triangles during transformation */
1075 static void recalcData_gpencil_strokes(TransInfo *t)
1076 {
1077         TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
1078
1079         TransData *td = tc->data;
1080         for (int i = 0; i < tc->data_len; i++, td++) {
1081                 bGPDstroke *gps = td->extra;
1082                 if (gps != NULL) {
1083                         gps->flag |= GP_STROKE_RECALC_CACHES;
1084                 }
1085         }
1086 }
1087
1088 /* called for updating while transform acts, once per redraw */
1089 void recalcData(TransInfo *t)
1090 {
1091         /* if tests must match createTransData for correct updates */
1092         if (t->options & CTX_CURSOR) {
1093                 recalcData_cursor(t);
1094         }
1095         else if (t->options & CTX_TEXTURE) {
1096                 recalcData_objects(t);
1097         }
1098         else if (t->options & CTX_EDGE) {
1099                 recalcData_objects(t);
1100         }
1101         else if (t->options & CTX_PAINT_CURVE) {
1102                 flushTransPaintCurve(t);
1103         }
1104         else if (t->options & CTX_GPENCIL_STROKES) {
1105                 /* set recalc triangle cache flag */
1106                 recalcData_gpencil_strokes(t);
1107         }
1108         else if (t->spacetype == SPACE_IMAGE) {
1109                 recalcData_image(t);
1110         }
1111         else if (t->spacetype == SPACE_ACTION) {
1112                 recalcData_actedit(t);
1113         }
1114         else if (t->spacetype == SPACE_NLA) {
1115                 recalcData_nla(t);
1116         }
1117         else if (t->spacetype == SPACE_SEQ) {
1118                 recalcData_sequencer(t);
1119         }
1120         else if (t->spacetype == SPACE_IPO) {
1121                 recalcData_graphedit(t);
1122         }
1123         else if (t->spacetype == SPACE_NODE) {
1124                 flushTransNodes(t);
1125         }
1126         else if (t->spacetype == SPACE_CLIP) {
1127                 recalcData_spaceclip(t);
1128         }
1129         else {
1130                 recalcData_objects(t);
1131         }
1132 }
1133
1134 void drawLine(TransInfo *t, const float center[3], const float dir[3], char axis, short options)
1135 {
1136         float v1[3], v2[3], v3[3];
1137         unsigned char col[3], col2[3];
1138
1139         if (t->spacetype == SPACE_VIEW3D) {
1140                 View3D *v3d = t->view;
1141
1142                 GPU_matrix_push();
1143
1144                 copy_v3_v3(v3, dir);
1145                 mul_v3_fl(v3, v3d->far);
1146
1147                 sub_v3_v3v3(v2, center, v3);
1148                 add_v3_v3v3(v1, center, v3);
1149
1150                 if (options & DRAWLIGHT) {
1151                         col[0] = col[1] = col[2] = 220;
1152                 }
1153                 else {
1154                         UI_GetThemeColor3ubv(TH_GRID, col);
1155                 }
1156                 UI_make_axis_color(col, col2, axis);
1157
1158                 uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
1159
1160                 immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
1161                 immUniformColor3ubv(col2);
1162
1163                 immBegin(GPU_PRIM_LINES, 2);
1164                 immVertex3fv(pos, v1);
1165                 immVertex3fv(pos, v2);
1166                 immEnd();
1167
1168                 immUnbindProgram();
1169
1170                 GPU_matrix_pop();
1171         }
1172 }
1173
1174 /**
1175  * Free data before switching to another mode.
1176  */
1177 void resetTransModal(TransInfo *t)
1178 {
1179         freeTransCustomDataForMode(t);
1180 }
1181
1182 void resetTransRestrictions(TransInfo *t)
1183 {
1184         t->flag &= ~T_ALL_RESTRICTIONS;
1185 }
1186
1187 static int initTransInfo_edit_pet_to_flag(const int proportional)
1188 {
1189         switch (proportional) {
1190                 case PROP_EDIT_ON:
1191                         return T_PROP_EDIT;
1192                 case PROP_EDIT_CONNECTED:
1193                         return T_PROP_EDIT | T_PROP_CONNECTED;
1194                 case PROP_EDIT_PROJECTED:
1195                         return T_PROP_EDIT | T_PROP_PROJECTED;
1196                 default:
1197                         return 0;
1198         }
1199 }
1200
1201 void initTransDataContainers_FromObjectData(TransInfo *t, Object *obact, Object **objects, uint objects_len)
1202 {
1203         const eObjectMode object_mode = obact ? obact->mode : OB_MODE_OBJECT;
1204         const short object_type = obact ? obact->type : -1;
1205
1206         if ((object_mode & OB_MODE_EDIT) ||
1207             ((object_mode & OB_MODE_POSE) && (object_type == OB_ARMATURE)))
1208         {
1209                 if (t->data_container) {
1210                         MEM_freeN(t->data_container);
1211                 }
1212
1213                 bool free_objects = false;
1214                 if (objects == NULL) {
1215                         objects = BKE_view_layer_array_from_objects_in_mode(
1216                                 t->view_layer,
1217                                 (t->spacetype == SPACE_VIEW3D) ? t->view : NULL,
1218                                 &objects_len, {
1219                                     .object_mode = object_mode,
1220                                     .no_dup_data = true,
1221                                 });
1222                         free_objects = true;
1223                 }
1224
1225                 t->data_container = MEM_callocN(sizeof(*t->data_container) * objects_len, __func__);
1226                 t->data_container_len = objects_len;
1227
1228                 for (int i = 0; i < objects_len; i++) {
1229                         TransDataContainer *tc = &t->data_container[i];
1230                         if (object_mode & OB_MODE_EDIT) {
1231                                 tc->obedit = objects[i];
1232                                 /* Check needed for UV's */
1233                                 if ((t->flag & T_2D_EDIT) == 0) {
1234                                         tc->use_local_mat = true;
1235                                 }
1236                         }
1237                         else if (object_mode & OB_MODE_POSE) {
1238                                 tc->poseobj = objects[i];
1239                                 tc->use_local_mat = true;
1240                         }
1241
1242                         if (tc->use_local_mat) {
1243                                 BLI_assert((t->flag & T_2D_EDIT) == 0);
1244                                 copy_m4_m4(tc->mat, objects[i]->obmat);
1245                                 copy_m3_m4(tc->mat3, tc->mat);
1246                                 invert_m4_m4(tc->imat, tc->mat);
1247                                 invert_m3_m3(tc->imat3, tc->mat3);
1248                                 normalize_m3_m3(tc->mat3_unit, tc->mat3);
1249                         }
1250                         /* Otherwise leave as zero. */
1251                 }
1252
1253                 if (free_objects) {
1254                         MEM_freeN(objects);
1255                 }
1256         }
1257 }
1258
1259 /**
1260  * Setup internal data, mouse, vectors
1261  *
1262  * \note \a op and \a event can be NULL
1263  *
1264  * \see #saveTransform does the reverse.
1265  */
1266 void initTransInfo(bContext *C, TransInfo *t, wmOperator *op, const wmEvent *event)
1267 {
1268         Depsgraph *depsgraph = CTX_data_depsgraph(C);
1269         Scene *sce = CTX_data_scene(C);
1270         ViewLayer *view_layer = CTX_data_view_layer(C);
1271         const eObjectMode object_mode = OBACT(view_layer) ? OBACT(view_layer)->mode : OB_MODE_OBJECT;
1272         const short object_type = OBACT(view_layer) ? OBACT(view_layer)->type : -1;
1273         ToolSettings *ts = CTX_data_tool_settings(C);
1274         ARegion *ar = CTX_wm_region(C);
1275         ScrArea *sa = CTX_wm_area(C);
1276
1277         bGPdata *gpd = CTX_data_gpencil_data(C);
1278         PropertyRNA *prop;
1279
1280         t->depsgraph = depsgraph;
1281         t->scene = sce;
1282         t->view_layer = view_layer;
1283         t->sa = sa;
1284         t->ar = ar;
1285         t->settings = ts;
1286         t->reports = op ? op->reports : NULL;
1287
1288         t->helpline = HLP_NONE;
1289
1290         t->flag = 0;
1291
1292         t->obedit_type = (object_mode == OB_MODE_EDIT) ? object_type : -1;
1293
1294         /* Many kinds of transform only use a single handle. */
1295         if (t->data_container == NULL) {
1296                 t->data_container = MEM_callocN(sizeof(*t->data_container), __func__);
1297                 t->data_container_len = 1;
1298         }
1299
1300         t->redraw = TREDRAW_HARD;  /* redraw first time */
1301
1302         if (event) {
1303                 t->mouse.imval[0] = event->mval[0];
1304                 t->mouse.imval[1] = event->mval[1];
1305         }
1306         else {
1307                 t->mouse.imval[0] = 0;
1308                 t->mouse.imval[1] = 0;
1309         }
1310
1311         t->con.imval[0] = t->mouse.imval[0];
1312         t->con.imval[1] = t->mouse.imval[1];
1313
1314         t->mval[0] = t->mouse.imval[0];
1315         t->mval[1] = t->mouse.imval[1];
1316
1317         t->transform        = NULL;
1318         t->handleEvent      = NULL;
1319
1320         t->data_len_all = 0;
1321
1322         t->val = 0.0f;
1323
1324         zero_v3(t->vec);
1325         zero_v3(t->center_global);
1326
1327         unit_m3(t->mat);
1328
1329         /* if there's an event, we're modal */
1330         if (event) {
1331                 t->flag |= T_MODAL;
1332         }
1333
1334         /* Crease needs edge flag */
1335         if (ELEM(t->mode, TFM_CREASE, TFM_BWEIGHT)) {
1336                 t->options |= CTX_EDGE;
1337         }
1338
1339         t->remove_on_cancel = false;
1340
1341         if (op && (prop = RNA_struct_find_property(op->ptr, "remove_on_cancel")) && RNA_property_is_set(op->ptr, prop)) {
1342                 if (RNA_property_boolean_get(op->ptr, prop)) {
1343                         t->remove_on_cancel = true;
1344                 }
1345         }
1346
1347         /* GPencil editing context */
1348         if (GPENCIL_EDIT_MODE(gpd)) {
1349                 t->options |= CTX_GPENCIL_STROKES;
1350         }
1351
1352         /* Assign the space type, some exceptions for running in different mode */
1353         if (sa == NULL) {
1354                 /* background mode */
1355                 t->spacetype = SPACE_EMPTY;
1356         }
1357         else if ((ar == NULL) && (sa->spacetype == SPACE_VIEW3D)) {
1358                 /* running in the text editor */
1359                 t->spacetype = SPACE_EMPTY;
1360         }
1361         else {
1362                 /* normal operation */
1363                 t->spacetype = sa->spacetype;
1364         }
1365
1366         /* handle T_ALT_TRANSFORM initialization, we may use for different operators */
1367         if (op) {
1368                 const char *prop_id = NULL;
1369                 if (t->mode == TFM_SHRINKFATTEN) {
1370                         prop_id = "use_even_offset";
1371                 }
1372
1373                 if (prop_id && (prop = RNA_struct_find_property(op->ptr, prop_id))) {
1374                         SET_FLAG_FROM_TEST(t->flag, RNA_property_boolean_get(op->ptr, prop), T_ALT_TRANSFORM);
1375                 }
1376         }
1377
1378         if (t->spacetype == SPACE_VIEW3D) {
1379                 View3D *v3d = sa->spacedata.first;
1380                 bScreen *animscreen = ED_screen_animation_playing(CTX_wm_manager(C));
1381
1382                 t->view = v3d;
1383                 t->animtimer = (animscreen) ? animscreen->animtimer : NULL;
1384
1385                 /* turn gizmo off during transform */
1386                 if (t->flag & T_MODAL) {
1387                         t->gizmo_flag = v3d->gizmo_flag;
1388                         v3d->gizmo_flag = V3D_GIZMO_HIDE;
1389                 }
1390
1391                 if (t->scene->toolsettings->transform_flag & SCE_XFORM_AXIS_ALIGN) {
1392                         t->flag |= T_V3D_ALIGN;
1393                 }
1394                 t->around = t->scene->toolsettings->transform_pivot_point;
1395
1396                 /* bend always uses the cursor */
1397                 if (t->mode == TFM_BEND) {
1398                         t->around = V3D_AROUND_CURSOR;
1399                 }
1400
1401                 t->orientation.user = t->scene->orientation_type;
1402                 t->orientation.custom = BKE_scene_transform_orientation_find(
1403                         t->scene, t->scene->orientation_index_custom);
1404
1405                 t->orientation.index = 0;
1406                 ARRAY_SET_ITEMS(
1407                                 t->orientation.types,
1408                                 NULL,
1409                                 &t->orientation.user);
1410
1411                 /* Make second orientation local if both are global. */
1412                 if (t->orientation.user == V3D_MANIP_GLOBAL) {
1413                         t->orientation.user_alt = V3D_MANIP_LOCAL;
1414                         t->orientation.types[1] = &t->orientation.user_alt;
1415                 }
1416
1417                 /* exceptional case */
1418                 if (t->around == V3D_AROUND_LOCAL_ORIGINS) {
1419                         if (ELEM(t->mode, TFM_ROTATION, TFM_RESIZE, TFM_TRACKBALL)) {
1420                                 const bool use_island = transdata_check_local_islands(t, t->around);
1421
1422                                 if ((t->obedit_type != -1) && !use_island) {
1423                                         t->options |= CTX_NO_PET;
1424                                 }
1425                         }
1426                 }
1427
1428                 if (object_mode & OB_MODE_ALL_PAINT) {
1429                         Paint *p = BKE_paint_get_active_from_context(C);
1430                         if (p && p->brush && (p->brush->flag & BRUSH_CURVE)) {
1431                                 t->options |= CTX_PAINT_CURVE;
1432                         }
1433                 }
1434
1435                 /* initialize UV transform from */
1436                 if (op && ((prop = RNA_struct_find_property(op->ptr, "correct_uv")))) {
1437                         if (RNA_property_is_set(op->ptr, prop)) {
1438                                 if (RNA_property_boolean_get(op->ptr, prop)) {
1439                                         t->settings->uvcalc_flag |= UVCALC_TRANSFORM_CORRECT;
1440                                 }
1441                                 else {
1442                                         t->settings->uvcalc_flag &= ~UVCALC_TRANSFORM_CORRECT;
1443                                 }
1444                         }
1445                         else {
1446                                 RNA_property_boolean_set(op->ptr, prop, (t->settings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) != 0);
1447                         }
1448                 }
1449
1450         }
1451         else if (t->spacetype == SPACE_IMAGE) {
1452                 SpaceImage *sima = sa->spacedata.first;
1453                 // XXX for now, get View2D from the active region
1454                 t->view = &ar->v2d;
1455                 t->around = sima->around;
1456
1457                 if (ED_space_image_show_uvedit(sima, OBACT(t->view_layer))) {
1458                         /* UV transform */
1459                 }
1460                 else if (sima->mode == SI_MODE_MASK) {
1461                         t->options |= CTX_MASK;
1462                 }
1463                 else if (sima->mode == SI_MODE_PAINT) {
1464                         Paint *p = &sce->toolsettings->imapaint.paint;
1465                         if (p->brush && (p->brush->flag & BRUSH_CURVE)) {
1466                                 t->options |= CTX_PAINT_CURVE;
1467                         }
1468                 }
1469                 /* image not in uv edit, nor in mask mode, can happen for some tools */
1470         }
1471         else if (t->spacetype == SPACE_NODE) {
1472                 // XXX for now, get View2D from the active region
1473                 t->view = &ar->v2d;
1474                 t->around = V3D_AROUND_CENTER_BOUNDS;
1475         }
1476         else if (t->spacetype == SPACE_IPO) {
1477                 SpaceIpo *sipo = sa->spacedata.first;
1478                 t->view = &ar->v2d;
1479                 t->around = sipo->around;
1480         }
1481         else if (t->spacetype == SPACE_CLIP) {
1482                 SpaceClip *sclip = sa->spacedata.first;
1483                 t->view = &ar->v2d;
1484                 t->around = sclip->around;
1485
1486                 if (ED_space_clip_check_show_trackedit(sclip))
1487                         t->options |= CTX_MOVIECLIP;
1488                 else if (ED_space_clip_check_show_maskedit(sclip))
1489                         t->options |= CTX_MASK;
1490         }
1491         else {
1492                 if (ar) {
1493                         // XXX for now, get View2D  from the active region
1494                         t->view = &ar->v2d;
1495                         // XXX for now, the center point is the midpoint of the data
1496                 }
1497                 else {
1498                         t->view = NULL;
1499                 }
1500                 t->around = V3D_AROUND_CENTER_BOUNDS;
1501         }
1502
1503         if (op && ((prop = RNA_struct_find_property(op->ptr, "constraint_matrix")) &&
1504                    RNA_property_is_set(op->ptr, prop)))
1505         {
1506                 RNA_property_float_get_array(op->ptr, prop, &t->spacemtx[0][0]);
1507                 t->orientation.user = V3D_MANIP_CUSTOM_MATRIX;
1508                 t->orientation.custom = 0;
1509         }
1510         else if (op && ((prop = RNA_struct_find_property(op->ptr, "constraint_orientation")) &&
1511                         RNA_property_is_set(op->ptr, prop)))
1512         {
1513                 short orientation = RNA_property_enum_get(op->ptr, prop);
1514                 TransformOrientation *custom_orientation = NULL;
1515
1516                 if (orientation >= V3D_MANIP_CUSTOM) {
1517                         if (orientation >= V3D_MANIP_CUSTOM + BIF_countTransformOrientation(C)) {
1518                                 orientation = V3D_MANIP_GLOBAL;
1519                         }
1520                         else {
1521                                 custom_orientation = BKE_scene_transform_orientation_find(
1522                                         t->scene, orientation - V3D_MANIP_CUSTOM);
1523                                 orientation = V3D_MANIP_CUSTOM;
1524                         }
1525                 }
1526
1527                 t->orientation.user = orientation;
1528                 t->orientation.custom = custom_orientation;
1529         }
1530
1531         if (op && ((prop = RNA_struct_find_property(op->ptr, "release_confirm")) &&
1532                    RNA_property_is_set(op->ptr, prop)))
1533         {
1534                 if (RNA_property_boolean_get(op->ptr, prop)) {
1535                         t->flag |= T_RELEASE_CONFIRM;
1536                 }
1537         }
1538         else {
1539                 if (U.flag & USER_RELEASECONFIRM) {
1540                         t->flag |= T_RELEASE_CONFIRM;
1541                 }
1542         }
1543
1544         if (op && ((prop = RNA_struct_find_property(op->ptr, "mirror")) &&
1545                    RNA_property_is_set(op->ptr, prop)))
1546         {
1547                 if (RNA_property_boolean_get(op->ptr, prop)) {
1548                         t->flag |= T_MIRROR;
1549                         t->mirror = 1;
1550                 }
1551         }
1552         // Need stuff to take it from edit mesh or whatnot here
1553         else if (t->spacetype == SPACE_VIEW3D) {
1554                 /* TODO(campbell): xform, get mirror from each object. */
1555                 if (t->obedit_type == OB_MESH && (((Mesh *)OBACT(t->view_layer)->data)->editflag & ME_EDIT_MIRROR_X)) {
1556                         t->flag |= T_MIRROR;
1557                         t->mirror = 1;
1558                 }
1559         }
1560
1561         /* setting PET flag only if property exist in operator. Otherwise, assume it's not supported */
1562         if (op && (prop = RNA_struct_find_property(op->ptr, "proportional"))) {
1563                 if (RNA_property_is_set(op->ptr, prop)) {
1564                         t->flag |= initTransInfo_edit_pet_to_flag(RNA_property_enum_get(op->ptr, prop));
1565                 }
1566                 else {
1567                         /* use settings from scene only if modal */
1568                         if (t->flag & T_MODAL) {
1569                                 if ((t->options & CTX_NO_PET) == 0) {
1570                                         if (t->spacetype == SPACE_IPO) {
1571                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_fcurve);
1572                                         }
1573                                         else if (t->spacetype == SPACE_ACTION) {
1574                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional_action);
1575                                         }
1576                                         else if (t->obedit_type != -1) {
1577                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1578                                         }
1579                                         else if (t->options & CTX_GPENCIL_STROKES) {
1580                                                 t->flag |= initTransInfo_edit_pet_to_flag(ts->proportional);
1581                                         }
1582                                         else if (t->options & CTX_MASK) {
1583                                                 if (ts->proportional_mask) {
1584                                                         t->flag |= T_PROP_EDIT;
1585
1586                                                         if (ts->proportional == PROP_EDIT_CONNECTED) {
1587                                                                 t->flag |= T_PROP_CONNECTED;
1588                                                         }
1589                                                 }
1590                                         }
1591                                         else if ((t->obedit_type == -1) && ts->proportional_objects) {
1592                                                 t->flag |= T_PROP_EDIT;
1593                                         }
1594                                 }
1595                         }
1596                 }
1597
1598                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_size")) &&
1599                            RNA_property_is_set(op->ptr, prop)))
1600                 {
1601                         t->prop_size = RNA_property_float_get(op->ptr, prop);
1602                 }
1603                 else {
1604                         t->prop_size = ts->proportional_size;
1605                 }
1606
1607
1608                 /* TRANSFORM_FIX_ME rna restrictions */
1609                 if (t->prop_size <= 0.00001f) {
1610                         printf("Proportional size (%f) under 0.00001, resetting to 1!\n", t->prop_size);
1611                         t->prop_size = 1.0f;
1612                 }
1613
1614                 if (op && ((prop = RNA_struct_find_property(op->ptr, "proportional_edit_falloff")) &&
1615                            RNA_property_is_set(op->ptr, prop)))
1616                 {
1617                         t->prop_mode = RNA_property_enum_get(op->ptr, prop);
1618                 }
1619                 else {
1620                         t->prop_mode = ts->prop_mode;
1621                 }
1622         }
1623         else { /* add not pet option to context when not available */
1624                 t->options |= CTX_NO_PET;
1625         }
1626
1627         // Mirror is not supported with PET, turn it off.
1628 #if 0
1629         if (t->flag & T_PROP_EDIT) {
1630                 t->flag &= ~T_MIRROR;
1631         }
1632 #endif
1633
1634         setTransformViewAspect(t, t->aspect);
1635
1636         if (op && (prop = RNA_struct_find_property(op->ptr, "center_override")) && RNA_property_is_set(op->ptr, prop)) {
1637                 RNA_property_float_get_array(op->ptr, prop, t->center_global);
1638                 mul_v3_v3(t->center_global, t->aspect);
1639                 t->flag |= T_OVERRIDE_CENTER;
1640         }
1641
1642         setTransformViewMatrices(t);
1643         initNumInput(&t->num);
1644 }
1645
1646
1647 static void freeTransCustomData(
1648         TransInfo *t, TransDataContainer *tc,
1649         TransCustomData *custom_data)
1650 {
1651         if (custom_data->free_cb) {
1652                 /* Can take over freeing t->data and data_2d etc... */
1653                 custom_data->free_cb(t, tc, custom_data);
1654                 BLI_assert(custom_data->data == NULL);
1655         }
1656         else if ((custom_data->data != NULL) && custom_data->use_free) {
1657                 MEM_freeN(custom_data->data);
1658                 custom_data->data = NULL;
1659         }
1660         /* In case modes are switched in the same transform session. */
1661         custom_data->free_cb = false;
1662         custom_data->use_free = false;
1663 }
1664
1665 static void freeTransCustomDataContainer(TransInfo *t, TransDataContainer *tc, TransCustomDataContainer *tcdc)
1666 {
1667         TransCustomData *custom_data = &tcdc->first_elem;
1668         for (int i = 0; i < TRANS_CUSTOM_DATA_ELEM_MAX; i++, custom_data++) {
1669                 freeTransCustomData(t, tc, custom_data);
1670         }
1671 }
1672
1673 /**
1674  * Needed for mode switching.
1675  */
1676 void freeTransCustomDataForMode(TransInfo *t)
1677 {
1678         freeTransCustomData(t, NULL, &t->custom.mode);
1679         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1680                 freeTransCustomData(t, tc, &tc->custom.mode);
1681         }
1682 }
1683
1684 /* Here I would suggest only TransInfo related issues, like free data & reset vars. Not redraws */
1685 void postTrans(bContext *C, TransInfo *t)
1686 {
1687         if (t->draw_handle_view)
1688                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_view);
1689         if (t->draw_handle_apply)
1690                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_apply);
1691         if (t->draw_handle_pixel)
1692                 ED_region_draw_cb_exit(t->ar->type, t->draw_handle_pixel);
1693         if (t->draw_handle_cursor)
1694                 WM_paint_cursor_end(CTX_wm_manager(C), t->draw_handle_cursor);
1695
1696         if (t->flag & T_MODAL_CURSOR_SET) {
1697                 WM_cursor_modal_restore(CTX_wm_window(C));
1698         }
1699
1700         /* Free all custom-data */
1701         freeTransCustomDataContainer(t, NULL, &t->custom);
1702         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1703                 freeTransCustomDataContainer(t, tc, &tc->custom);
1704         }
1705
1706         /* postTrans can be called when nothing is selected, so data is NULL already */
1707         if (t->data_len_all != 0) {
1708                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1709                         /* free data malloced per trans-data */
1710                         if (ELEM(t->obedit_type, OB_CURVE, OB_SURF) ||
1711                             (t->spacetype == SPACE_IPO))
1712                         {
1713                                 TransData *td = tc->data;
1714                                 for (int a = 0; a < tc->data_len; a++, td++) {
1715                                         if (td->flag & TD_BEZTRIPLE) {
1716                                                 MEM_freeN(td->hdata);
1717                                         }
1718                                 }
1719                         }
1720                         MEM_freeN(tc->data);
1721
1722                         MEM_SAFE_FREE(tc->data_ext);
1723                         MEM_SAFE_FREE(tc->data_2d);
1724                 }
1725         }
1726
1727         MEM_SAFE_FREE(t->data_container);
1728         t->data_container = NULL;
1729
1730         BLI_freelistN(&t->tsnap.points);
1731
1732         if (t->spacetype == SPACE_IMAGE) {
1733                 if (t->options & (CTX_MASK | CTX_PAINT_CURVE)) {
1734                         /* pass */
1735                 }
1736                 else {
1737                         SpaceImage *sima = t->sa->spacedata.first;
1738                         if (sima->flag & SI_LIVE_UNWRAP)
1739                                 ED_uvedit_live_unwrap_end(t->state == TRANS_CANCEL);
1740                 }
1741         }
1742         else if (t->spacetype == SPACE_VIEW3D) {
1743                 View3D *v3d = t->sa->spacedata.first;
1744                 /* restore gizmo */
1745                 if (t->flag & T_MODAL) {
1746                         v3d->gizmo_flag = t->gizmo_flag;
1747                 }
1748         }
1749
1750         if (t->mouse.data) {
1751                 MEM_freeN(t->mouse.data);
1752         }
1753
1754         if (t->rng != NULL) {
1755                 BLI_rng_free(t->rng);
1756         }
1757
1758         freeSnapping(t);
1759 }
1760
1761 void applyTransObjects(TransInfo *t)
1762 {
1763         TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
1764
1765         TransData *td;
1766
1767         for (td = tc->data; td < tc->data + tc->data_len; td++) {
1768                 copy_v3_v3(td->iloc, td->loc);
1769                 if (td->ext->rot) {
1770                         copy_v3_v3(td->ext->irot, td->ext->rot);
1771                 }
1772                 if (td->ext->size) {
1773                         copy_v3_v3(td->ext->isize, td->ext->size);
1774                 }
1775         }
1776         recalcData(t);
1777 }
1778
1779 static void restoreElement(TransData *td)
1780 {
1781         /* TransData for crease has no loc */
1782         if (td->loc) {
1783                 copy_v3_v3(td->loc, td->iloc);
1784         }
1785         if (td->val) {
1786                 *td->val = td->ival;
1787         }
1788
1789         if (td->ext && (td->flag & TD_NO_EXT) == 0) {
1790                 if (td->ext->rot) {
1791                         copy_v3_v3(td->ext->rot, td->ext->irot);
1792                 }
1793                 if (td->ext->rotAngle) {
1794                         *td->ext->rotAngle = td->ext->irotAngle;
1795                 }
1796                 if (td->ext->rotAxis) {
1797                         copy_v3_v3(td->ext->rotAxis, td->ext->irotAxis);
1798                 }
1799                 /* XXX, drotAngle & drotAxis not used yet */
1800                 if (td->ext->size) {
1801                         copy_v3_v3(td->ext->size, td->ext->isize);
1802                 }
1803                 if (td->ext->quat) {
1804                         copy_qt_qt(td->ext->quat, td->ext->iquat);
1805                 }
1806         }
1807
1808         if (td->flag & TD_BEZTRIPLE) {
1809                 *(td->hdata->h1) = td->hdata->ih1;
1810                 *(td->hdata->h2) = td->hdata->ih2;
1811         }
1812 }
1813
1814 void restoreTransObjects(TransInfo *t)
1815 {
1816         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1817
1818                 TransData *td;
1819                 TransData2D *td2d;
1820
1821                 for (td = tc->data; td < tc->data + tc->data_len; td++) {
1822                         restoreElement(td);
1823                 }
1824
1825                 for (td2d = tc->data_2d; tc->data_2d && td2d < tc->data_2d + tc->data_len; td2d++) {
1826                         if (td2d->h1) {
1827                                 td2d->h1[0] = td2d->ih1[0];
1828                                 td2d->h1[1] = td2d->ih1[1];
1829                         }
1830                         if (td2d->h2) {
1831                                 td2d->h2[0] = td2d->ih2[0];
1832                                 td2d->h2[1] = td2d->ih2[1];
1833                         }
1834                 }
1835
1836                 unit_m3(t->mat);
1837
1838         }
1839
1840         recalcData(t);
1841 }
1842
1843 void calculateCenter2D(TransInfo *t)
1844 {
1845         BLI_assert(!is_zero_v3(t->aspect));
1846         projectFloatView(t, t->center_global, t->center2d);
1847 }
1848
1849 void calculateCenterLocal(
1850         TransInfo *t, const float center_global[3])
1851 {
1852         /* setting constraint center */
1853         /* note, init functions may over-ride t->center */
1854         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1855                 if (tc->use_local_mat) {
1856                         mul_v3_m4v3(tc->center_local, tc->imat, center_global);
1857                 }
1858                 else {
1859                         copy_v3_v3(tc->center_local, center_global);
1860                 }
1861         }
1862 }
1863
1864 void calculateCenterCursor(TransInfo *t, float r_center[3])
1865 {
1866         const float *cursor = t->scene->cursor.location;
1867         copy_v3_v3(r_center, cursor);
1868
1869         /* If edit or pose mode, move cursor in local space */
1870         if (t->options & CTX_PAINT_CURVE) {
1871                 if (ED_view3d_project_float_global(t->ar, cursor, r_center, V3D_PROJ_TEST_NOP) != V3D_PROJ_RET_OK) {
1872                         r_center[0] = t->ar->winx / 2.0f;
1873                         r_center[1] = t->ar->winy / 2.0f;
1874                 }
1875                 r_center[2] = 0.0f;
1876         }
1877         else if (t->options & CTX_GPENCIL_STROKES) {
1878                  /* move cursor in local space */
1879                 TransData *td = NULL;
1880                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1881                         float mat[3][3], imat[3][3];
1882
1883                         td = tc->data;
1884                         Object *ob = td->ob;
1885                         if (ob) {
1886                                 sub_v3_v3v3(r_center, r_center, ob->obmat[3]);
1887                                 copy_m3_m4(mat, ob->obmat);
1888                                 invert_m3_m3(imat, mat);
1889                                 mul_m3_v3(imat, r_center);
1890                         }
1891                 }
1892         }
1893 }
1894
1895 void calculateCenterCursor2D(TransInfo *t, float r_center[2])
1896 {
1897         const float *cursor = NULL;
1898
1899         if (t->spacetype == SPACE_IMAGE) {
1900                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1901                 cursor = sima->cursor;
1902         }
1903         else if (t->spacetype == SPACE_CLIP) {
1904                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1905                 cursor = space_clip->cursor;
1906         }
1907
1908         if (cursor) {
1909                 if (t->options & CTX_MASK) {
1910                         float co[2];
1911
1912                         if (t->spacetype == SPACE_IMAGE) {
1913                                 SpaceImage *sima = (SpaceImage *)t->sa->spacedata.first;
1914                                 BKE_mask_coord_from_image(sima->image, &sima->iuser, co, cursor);
1915                         }
1916                         else if (t->spacetype == SPACE_CLIP) {
1917                                 SpaceClip *space_clip = (SpaceClip *) t->sa->spacedata.first;
1918                                 BKE_mask_coord_from_movieclip(space_clip->clip, &space_clip->user, co, cursor);
1919                         }
1920                         else {
1921                                 BLI_assert(!"Shall not happen");
1922                         }
1923
1924                         r_center[0] = co[0] * t->aspect[0];
1925                         r_center[1] = co[1] * t->aspect[1];
1926                 }
1927                 else if (t->options & CTX_PAINT_CURVE) {
1928                         if (t->spacetype == SPACE_IMAGE) {
1929                                 r_center[0] = UI_view2d_view_to_region_x(&t->ar->v2d, cursor[0]);
1930                                 r_center[1] = UI_view2d_view_to_region_y(&t->ar->v2d, cursor[1]);
1931                         }
1932                 }
1933                 else {
1934                         r_center[0] = cursor[0] * t->aspect[0];
1935                         r_center[1] = cursor[1] * t->aspect[1];
1936                 }
1937         }
1938 }
1939
1940 void calculateCenterCursorGraph2D(TransInfo *t, float r_center[2])
1941 {
1942         SpaceIpo *sipo = (SpaceIpo *)t->sa->spacedata.first;
1943         Scene *scene = t->scene;
1944
1945         /* cursor is combination of current frame, and graph-editor cursor value */
1946         if (sipo->mode == SIPO_MODE_DRIVERS) {
1947                 r_center[0] = sipo->cursorTime;
1948                 r_center[1] = sipo->cursorVal;
1949         }
1950         else {
1951                 r_center[0] = (float)(scene->r.cfra);
1952                 r_center[1] = sipo->cursorVal;
1953         }
1954 }
1955
1956 void calculateCenterMedian(TransInfo *t, float r_center[3])
1957 {
1958         float partial[3] = {0.0f, 0.0f, 0.0f};
1959         int total = 0;
1960
1961         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1962                 for (int i = 0; i < tc->data_len; i++) {
1963                         if (tc->data[i].flag & TD_SELECTED) {
1964                                 if (!(tc->data[i].flag & TD_NOCENTER)) {
1965                                         if (tc->use_local_mat) {
1966                                                 float v[3];
1967                                                 mul_v3_m4v3(v, tc->mat, tc->data[i].center);
1968                                                 add_v3_v3(partial, v);
1969                                         }
1970                                         else {
1971                                                 add_v3_v3(partial, tc->data[i].center);
1972                                         }
1973                                         total++;
1974                                 }
1975                         }
1976                 }
1977         }
1978         if (total) {
1979                 mul_v3_fl(partial, 1.0f / (float)total);
1980         }
1981         copy_v3_v3(r_center, partial);
1982 }
1983
1984 void calculateCenterBound(TransInfo *t, float r_center[3])
1985 {
1986         float max[3], min[3];
1987         bool changed = false;
1988         INIT_MINMAX(min, max);
1989         FOREACH_TRANS_DATA_CONTAINER (t, tc) {
1990                 for (int i = 0; i < tc->data_len; i++) {
1991                         if (tc->data[i].flag & TD_SELECTED) {
1992                                 if (!(tc->data[i].flag & TD_NOCENTER)) {
1993                                         if (tc->use_local_mat) {
1994                                                 float v[3];
1995                                                 mul_v3_m4v3(v, tc->mat, tc->data[i].center);
1996                                                 minmax_v3v3_v3(min, max, v);
1997                                         }
1998                                         else {
1999                                                 minmax_v3v3_v3(min, max, tc->data[i].center);
2000                                         }
2001                                         changed = true;
2002                                 }
2003                         }
2004                 }
2005         }
2006         if (changed) {
2007                 mid_v3_v3v3(r_center, min, max);
2008         }
2009 }
2010
2011 /**
2012  * \param select_only only get active center from data being transformed.
2013  */
2014 bool calculateCenterActive(TransInfo *t, bool select_only, float r_center[3])
2015 {
2016         TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_OK(t);
2017
2018         bool ok = false;
2019
2020         if (tc->obedit) {
2021                 if (ED_object_editmode_calc_active_center(tc->obedit, select_only, r_center)) {
2022                         mul_m4_v3(tc->obedit->obmat, r_center);
2023                         ok = true;
2024                 }
2025         }
2026         else if (t->flag & T_POSE) {
2027                 ViewLayer *view_layer = t->view_layer;
2028                 Object *ob = OBACT(view_layer);
2029                 if (ob) {
2030                         bPoseChannel *pchan = BKE_pose_channel_active(ob);
2031                         if (pchan && (!select_only || (pchan->bone->flag & BONE_SELECTED))) {
2032                                 copy_v3_v3(r_center, pchan->pose_head);
2033                                 mul_m4_v3(ob->obmat, r_center);
2034                                 ok = true;
2035                         }
2036                 }
2037         }
2038         else if (t->options & CTX_PAINT_CURVE) {
2039                 Paint *p = BKE_paint_get_active(t->scene, t->view_layer);
2040                 Brush *br = p->brush;
2041                 PaintCurve *pc = br->paint_curve;
2042                 copy_v3_v3(r_center, pc->points[pc->add_index - 1].bez.vec[1]);
2043                 r_center[2] = 0.0f;
2044                 ok = true;
2045         }
2046         else {
2047                 /* object mode */
2048                 ViewLayer *view_layer = t->view_layer;
2049                 Object *ob = OBACT(view_layer);
2050                 Base *base = BASACT(view_layer);
2051                 if (ob && ((!select_only) || ((base->flag & BASE_SELECTED) != 0))) {
2052                         copy_v3_v3(r_center, ob->obmat[3]);
2053                         ok = true;
2054                 }
2055         }
2056
2057         return ok;
2058 }
2059
2060 static void calculateCenter_FromAround(TransInfo *t, int around, float r_center[3])
2061 {
2062         switch (around) {
2063                 case V3D_AROUND_CENTER_BOUNDS:
2064                         calculateCenterBound(t, r_center);
2065                         break;
2066                 case V3D_AROUND_CENTER_MEAN:
2067                         calculateCenterMedian(t, r_center);
2068                         break;
2069                 case V3D_AROUND_CURSOR:
2070                         if (ELEM(t->spacetype, SPACE_IMAGE, SPACE_CLIP))
2071                                 calculateCenterCursor2D(t, r_center);
2072                         else if (t->spacetype == SPACE_IPO)
2073                                 calculateCenterCursorGraph2D(t, r_center);
2074                         else
2075                                 calculateCenterCursor(t, r_center);
2076                         break;
2077                 case V3D_AROUND_LOCAL_ORIGINS:
2078                         /* Individual element center uses median center for helpline and such */
2079                         calculateCenterMedian(t, r_center);
2080                         break;
2081                 case V3D_AROUND_ACTIVE:
2082                 {
2083                         if (calculateCenterActive(t, false, r_center)) {
2084                                 /* pass */
2085                         }
2086                         else {
2087                                 /* fallback */
2088                                 calculateCenterMedian(t, r_center);
2089                         }
2090                         break;
2091                 }
2092         }
2093 }
2094
2095 void calculateCenter(TransInfo *t)
2096 {
2097         if ((t->flag & T_OVERRIDE_CENTER) == 0) {
2098                 calculateCenter_FromAround(t, t->around, t->center_global);
2099         }
2100         calculateCenterLocal(t, t->center_global);
2101
2102         /* avoid calculating again */
2103         {
2104                 TransCenterData *cd = &t->center_cache[t->around];
2105                 copy_v3_v3(cd->global, t->center_global);
2106                 cd->is_set = true;
2107         }
2108
2109         calculateCenter2D(t);
2110
2111         /* for panning from cameraview */
2112         if ((t->flag & T_OBJECT) && (t->flag & T_OVERRIDE_CENTER) == 0) {
2113                 if (t->spacetype == SPACE_VIEW3D && t->ar && t->ar->regiontype == RGN_TYPE_WINDOW) {
2114
2115                         if (t->flag & T_CAMERA) {
2116                                 float axis[3];
2117                                 /* persinv is nasty, use viewinv instead, always right */
2118                                 copy_v3_v3(axis, t->viewinv[2]);
2119                                 normalize_v3(axis);
2120
2121                                 /* 6.0 = 6 grid units */
2122                                 axis[0] = t->center_global[0] - 6.0f * axis[0];
2123                                 axis[1] = t->center_global[1] - 6.0f * axis[1];
2124                                 axis[2] = t->center_global[2] - 6.0f * axis[2];
2125
2126                                 projectFloatView(t, axis, t->center2d);
2127
2128                                 /* rotate only needs correct 2d center, grab needs ED_view3d_calc_zfac() value */
2129                                 if (t->mode == TFM_TRANSLATION) {
2130                                         copy_v3_v3(t->center_global, axis);
2131                                 }
2132                         }
2133                 }
2134         }
2135
2136         if (t->spacetype == SPACE_VIEW3D) {
2137                 /* ED_view3d_calc_zfac() defines a factor for perspective depth correction, used in ED_view3d_win_to_delta() */
2138
2139                 /* zfac is only used convertViewVec only in cases operator was invoked in RGN_TYPE_WINDOW
2140                  * and never used in other cases.
2141                  *
2142                  * We need special case here as well, since ED_view3d_calc_zfac will crash when called
2143                  * for a region different from RGN_TYPE_WINDOW.
2144                  */
2145                 if (t->ar->regiontype == RGN_TYPE_WINDOW) {
2146                         t->zfac = ED_view3d_calc_zfac(t->ar->regiondata, t->center_global, NULL);
2147                 }
2148                 else {
2149                         t->zfac = 0.0f;
2150                 }
2151         }
2152 }
2153
2154 BLI_STATIC_ASSERT(ARRAY_SIZE(((TransInfo *)NULL)->center_cache) == (V3D_AROUND_ACTIVE + 1), "test size");
2155
2156 /**
2157  * Lazy initialize transform center data, when we need to access center values from other types.
2158  */
2159 const TransCenterData *transformCenter_from_type(TransInfo *t, int around)
2160 {
2161         BLI_assert(around <= V3D_AROUND_ACTIVE);
2162         TransCenterData *cd = &t->center_cache[around];
2163         if (cd->is_set == false) {
2164                 calculateCenter_FromAround(t, around, cd->global);
2165                 cd->is_set = true;
2166         }
2167         return cd;
2168 }
2169
2170 void calculatePropRatio(TransInfo *t)
2171 {
2172         int i;
2173         float dist;
2174         const bool connected = (t->flag & T_PROP_CONNECTED) != 0;
2175
2176         t->proptext[0] = '\0';
2177
2178         if (t->flag & T_PROP_EDIT) {
2179                 const char *pet_id = NULL;
2180                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
2181                         TransData *td = tc->data;
2182                         for (i = 0; i < tc->data_len; i++, td++) {
2183                                 if (td->flag & TD_SELECTED) {
2184                                         td->factor = 1.0f;
2185                                 }
2186                                 else if (t->flag & T_MIRROR && td->loc[0] * t->mirror < -0.00001f) {
2187                                         td->flag |= TD_SKIP;
2188                                         td->factor = 0.0f;
2189                                         restoreElement(td);
2190                                 }
2191                                 else if ((connected && (td->flag & TD_NOTCONNECTED || td->dist > t->prop_size)) ||
2192                                          (connected == 0 && td->rdist > t->prop_size))
2193                                 {
2194                                         /*
2195                                          * The elements are sorted according to their dist member in the array,
2196                                          * that means we can stop when it finds one element outside of the propsize.
2197                                          * do not set 'td->flag |= TD_NOACTION', the prop circle is being changed.
2198                                          */
2199
2200                                         td->factor = 0.0f;
2201                                         restoreElement(td);
2202                                 }
2203                                 else {
2204                                         /* Use rdist for falloff calculations, it is the real distance */
2205                                         td->flag &= ~TD_NOACTION;
2206
2207                                         if (connected)
2208                                                 dist = (t->prop_size - td->dist) / t->prop_size;
2209                                         else
2210                                                 dist = (t->prop_size - td->rdist) / t->prop_size;
2211
2212                                         /*
2213                                          * Clamp to positive numbers.
2214                                          * Certain corner cases with connectivity and individual centers
2215                                          * can give values of rdist larger than propsize.
2216                                          */
2217                                         if (dist < 0.0f)
2218                                                 dist = 0.0f;
2219
2220                                         switch (t->prop_mode) {
2221                                                 case PROP_SHARP:
2222                                                         td->factor = dist * dist;
2223                                                         break;
2224                                                 case PROP_SMOOTH:
2225                                                         td->factor = 3.0f * dist * dist - 2.0f * dist * dist * dist;
2226                                                         break;
2227                                                 case PROP_ROOT:
2228                                                         td->factor = sqrtf(dist);
2229                                                         break;
2230                                                 case PROP_LIN:
2231                                                         td->factor = dist;
2232                                                         break;
2233                                                 case PROP_CONST:
2234                                                         td->factor = 1.0f;
2235                                                         break;
2236                                                 case PROP_SPHERE:
2237                                                         td->factor = sqrtf(2 * dist - dist * dist);
2238                                                         break;
2239                                                 case PROP_RANDOM:
2240                                                         if (t->rng == NULL) {
2241                                                                 /* Lazy initialization. */
2242                                                                 uint rng_seed = (uint)(PIL_check_seconds_timer_i() & UINT_MAX);
2243                                                                 t->rng = BLI_rng_new(rng_seed);
2244                                                         }
2245                                                         td->factor = BLI_rng_get_float(t->rng) * dist;
2246                                                         break;
2247                                                 case PROP_INVSQUARE:
2248                                                         td->factor = dist * (2.0f - dist);
2249                                                         break;
2250                                                 default:
2251                                                         td->factor = 1;
2252                                                         break;
2253                                         }
2254                                 }
2255                         }
2256                 }
2257
2258                 switch (t->prop_mode) {
2259                         case PROP_SHARP:
2260                                 pet_id = N_("(Sharp)");
2261                                 break;
2262                         case PROP_SMOOTH:
2263                                 pet_id = N_("(Smooth)");
2264                                 break;
2265                         case PROP_ROOT:
2266                                 pet_id = N_("(Root)");
2267                                 break;
2268                         case PROP_LIN:
2269                                 pet_id = N_("(Linear)");
2270                                 break;
2271                         case PROP_CONST:
2272                                 pet_id = N_("(Constant)");
2273                                 break;
2274                         case PROP_SPHERE:
2275                                 pet_id = N_("(Sphere)");
2276                                 break;
2277                         case PROP_RANDOM:
2278                                 pet_id = N_("(Random)");
2279                                 break;
2280                         case PROP_INVSQUARE:
2281                                 pet_id = N_("(InvSquare)");
2282                                 break;
2283                         default:
2284                                 break;
2285                 }
2286
2287                 if (pet_id) {
2288                         BLI_strncpy(t->proptext, IFACE_(pet_id), sizeof(t->proptext));
2289                 }
2290         }
2291         else {
2292                 FOREACH_TRANS_DATA_CONTAINER (t, tc) {
2293                         TransData *td = tc->data;
2294                         for (i = 0; i < tc->data_len; i++, td++) {
2295                                 td->factor = 1.0;
2296                         }
2297                 }
2298         }
2299 }
2300
2301 /**
2302  * Rotate an element, low level code, ignore protected channels.
2303  * (use for objects or pose-bones)
2304  * Similar to #ElementRotation.
2305  */
2306 void transform_data_ext_rotate(TransData *td, float mat[3][3], bool use_drot)
2307 {
2308         float totmat[3][3];
2309         float smat[3][3];
2310         float fmat[3][3];
2311         float obmat[3][3];
2312
2313         float dmat[3][3];  /* delta rotation */
2314         float dmat_inv[3][3];
2315
2316         mul_m3_m3m3(totmat, mat, td->mtx);
2317         mul_m3_m3m3(smat, td->smtx, mat);
2318
2319         /* logic from BKE_object_rot_to_mat3 */
2320         if (use_drot) {
2321                 if (td->ext->rotOrder > 0) {
2322                         eulO_to_mat3(dmat, td->ext->drot, td->ext->rotOrder);
2323                 }
2324                 else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2325 #if 0
2326                         axis_angle_to_mat3(dmat, td->ext->drotAxis, td->ext->drotAngle);
2327 #else
2328                         unit_m3(dmat);
2329 #endif
2330                 }
2331                 else {
2332                         float tquat[4];
2333                         normalize_qt_qt(tquat, td->ext->dquat);
2334                         quat_to_mat3(dmat, tquat);
2335                 }
2336
2337                 invert_m3_m3(dmat_inv, dmat);
2338         }
2339
2340
2341         if (td->ext->rotOrder == ROT_MODE_QUAT) {
2342                 float quat[4];
2343
2344                 /* calculate the total rotatation */
2345                 quat_to_mat3(obmat, td->ext->iquat);
2346                 if (use_drot) {
2347                         mul_m3_m3m3(obmat, dmat, obmat);
2348                 }
2349
2350                 /* mat = transform, obmat = object rotation */
2351                 mul_m3_m3m3(fmat, smat, obmat);
2352
2353                 if (use_drot) {
2354                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2355                 }
2356
2357                 mat3_to_quat(quat, fmat);
2358
2359                 /* apply */
2360                 copy_qt_qt(td->ext->quat, quat);
2361         }
2362         else if (td->ext->rotOrder == ROT_MODE_AXISANGLE) {
2363                 float axis[3], angle;
2364
2365                 /* calculate the total rotatation */
2366                 axis_angle_to_mat3(obmat, td->ext->irotAxis, td->ext->irotAngle);
2367                 if (use_drot) {
2368                         mul_m3_m3m3(obmat, dmat, obmat);
2369                 }
2370
2371                 /* mat = transform, obmat = object rotation */
2372                 mul_m3_m3m3(fmat, smat, obmat);
2373
2374                 if (use_drot) {
2375                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2376                 }
2377
2378                 mat3_to_axis_angle(axis, &angle, fmat);
2379
2380                 /* apply */
2381                 copy_v3_v3(td->ext->rotAxis, axis);
2382                 *td->ext->rotAngle = angle;
2383         }
2384         else {
2385                 float eul[3];
2386
2387                 /* calculate the total rotatation */
2388                 eulO_to_mat3(obmat, td->ext->irot, td->ext->rotOrder);
2389                 if (use_drot) {
2390                         mul_m3_m3m3(obmat, dmat, obmat);
2391                 }
2392
2393                 /* mat = transform, obmat = object rotation */
2394                 mul_m3_m3m3(fmat, smat, obmat);
2395
2396                 if (use_drot) {
2397                         mul_m3_m3m3(fmat, dmat_inv, fmat);
2398                 }
2399
2400                 mat3_to_compatible_eulO(eul, td->ext->rot, td->ext->rotOrder, fmat);
2401
2402                 /* apply */
2403                 copy_v3_v3(td->ext->rot, eul);
2404         }
2405 }