1. Extend option for 3d view border select now does something (default True to keep...
[blender-staging.git] / source / blender / editors / physics / particle_edit.c
1 /*
2  * $Id$
3  *
4  * ***** BEGIN GPL LICENSE BLOCK *****
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19  *
20  * The Original Code is Copyright (C) 2007 by Janne Karhu.
21  * All rights reserved.
22  *
23  * The Original Code is: all of this file.
24  *
25  * Contributor(s): none yet.
26  *
27  * ***** END GPL LICENSE BLOCK *****
28  */
29
30 #include <stdlib.h>
31 #include <math.h>
32 #include <string.h>
33
34 #include "MEM_guardedalloc.h"
35
36 #include "DNA_scene_types.h"
37 #include "DNA_mesh_types.h"
38 #include "DNA_meshdata_types.h"
39 #include "DNA_modifier_types.h"
40 #include "DNA_object_force.h"
41 #include "DNA_object_types.h"
42 #include "DNA_vec_types.h"
43 #include "DNA_userdef_types.h"
44 #include "DNA_view3d_types.h"
45 #include "DNA_screen_types.h"
46 #include "DNA_space_types.h"
47 #include "DNA_windowmanager_types.h"
48
49 #include "BKE_DerivedMesh.h"
50 #include "BKE_depsgraph.h"
51
52 #include "BKE_context.h"
53 #include "BKE_global.h"
54 #include "BKE_object.h"
55 #include "BKE_mesh.h"
56 #include "BKE_modifier.h"
57 #include "BKE_particle.h"
58 #include "BKE_report.h"
59 #include "BKE_scene.h"
60 #include "BKE_utildefines.h"
61 #include "BKE_pointcache.h"
62
63 #include "BLI_math.h"
64 #include "BLI_blenlib.h"
65 #include "BLI_dynstr.h"
66 #include "BLI_kdtree.h"
67 #include "BLI_rand.h"
68
69 #include "PIL_time.h"
70
71 #include "BIF_gl.h"
72 #include "BIF_glutil.h"
73
74 #include "ED_mesh.h"
75 #include "ED_particle.h"
76 #include "ED_view3d.h"
77
78 #include "UI_interface.h"
79 #include "UI_resources.h"
80
81 #include "WM_api.h"
82 #include "WM_types.h"
83
84 #include "RNA_access.h"
85 #include "RNA_define.h"
86
87 #include "physics_intern.h"
88
89 static void PE_create_particle_edit(Scene *scene, Object *ob, PointCache *cache, ParticleSystem *psys);
90 static void PTCacheUndo_clear(PTCacheEdit *edit);
91
92 #define KEY_K                                   PTCacheEditKey *key; int k
93 #define POINT_P                                 PTCacheEditPoint *point; int p
94 #define LOOP_POINTS                             for(p=0, point=edit->points; p<edit->totpoint; p++, point++)
95 #define LOOP_VISIBLE_POINTS             for(p=0, point=edit->points; p<edit->totpoint; p++, point++) if(!(point->flag & PEP_HIDE))
96 #define LOOP_SELECTED_POINTS    for(p=0, point=edit->points; p<edit->totpoint; p++, point++) if(point_is_selected(point))
97 #define LOOP_UNSELECTED_POINTS  for(p=0, point=edit->points; p<edit->totpoint; p++, point++) if(!point_is_selected(point))
98 #define LOOP_EDITED_POINTS              for(p=0, point=edit->points; p<edit->totpoint; p++, point++) if(point->flag & PEP_EDIT_RECALC)
99 #define LOOP_TAGGED_POINTS              for(p=0, point=edit->points; p<edit->totpoint; p++, point++) if(point->flag & PEP_TAG)
100 #define LOOP_KEYS                               for(k=0, key=point->keys; k<point->totkey; k++, key++)
101 #define LOOP_VISIBLE_KEYS               for(k=0, key=point->keys; k<point->totkey; k++, key++) if(!(key->flag & PEK_HIDE))
102 #define LOOP_SELECTED_KEYS              for(k=0, key=point->keys; k<point->totkey; k++, key++) if((key->flag & PEK_SELECT) && !(key->flag & PEK_HIDE))
103 #define LOOP_TAGGED_KEYS                for(k=0, key=point->keys; k<point->totkey; k++, key++) if(key->flag & PEK_TAG)
104
105 #define KEY_WCO                                 (key->flag & PEK_USE_WCO ? key->world_co : key->co)
106
107 /**************************** utilities *******************************/
108
109 int PE_poll(bContext *C)
110 {
111         Scene *scene= CTX_data_scene(C);
112         Object *ob= CTX_data_active_object(C);
113
114         if(!scene || !ob || !(ob->mode & OB_MODE_PARTICLE_EDIT))
115                 return 0;
116         
117         return (PE_get_current(scene, ob) != NULL);
118 }
119
120 int PE_hair_poll(bContext *C)
121 {
122         Scene *scene= CTX_data_scene(C);
123         Object *ob= CTX_data_active_object(C);
124         PTCacheEdit *edit;
125
126         if(!scene || !ob || !(ob->mode & OB_MODE_PARTICLE_EDIT))
127                 return 0;
128         
129         edit= PE_get_current(scene, ob);
130
131         return (edit && edit->psys);
132 }
133
134 int PE_poll_3dview(bContext *C)
135 {
136         return PE_poll(C) && CTX_wm_area(C)->spacetype == SPACE_VIEW3D &&
137                 CTX_wm_region(C)->regiontype == RGN_TYPE_WINDOW;
138 }
139
140 void PE_free_ptcache_edit(PTCacheEdit *edit)
141 {
142         POINT_P;
143
144         if(edit==0) return;
145
146         PTCacheUndo_clear(edit);
147
148         if(edit->points) {
149                 LOOP_POINTS {
150                         if(point->keys) 
151                                 MEM_freeN(point->keys);
152                 }
153
154                 MEM_freeN(edit->points);
155         }
156
157         if(edit->mirror_cache)
158                 MEM_freeN(edit->mirror_cache);
159
160         if(edit->emitter_cosnos) {
161                 MEM_freeN(edit->emitter_cosnos);
162                 edit->emitter_cosnos= 0;
163         }
164
165         if(edit->emitter_field) {
166                 BLI_kdtree_free(edit->emitter_field);
167                 edit->emitter_field= 0;
168         }
169
170         psys_free_path_cache(NULL, edit);
171
172         MEM_freeN(edit);
173 }
174
175 /************************************************/
176 /*                      Edit Mode Helpers                                       */
177 /************************************************/
178
179 int PE_start_edit(PTCacheEdit *edit)
180 {
181         if(edit) {
182                 edit->edited = 1;
183                 if(edit->psys)
184                         edit->psys->flag |= PSYS_EDITED;
185                 return 1;
186         }
187
188         return 0;
189 }
190
191 ParticleEditSettings *PE_settings(Scene *scene)
192 {
193         return &scene->toolsettings->particle;
194 }
195
196 /* always gets atleast the first particlesystem even if PSYS_CURRENT flag is not set */
197 static PTCacheEdit *pe_get_current(Scene *scene, Object *ob, int create)
198 {
199         ParticleEditSettings *pset= PE_settings(scene);
200         PTCacheEdit *edit = NULL;
201         ListBase pidlist;
202         PTCacheID *pid;
203
204         pset->scene = scene;
205         pset->object = ob;
206
207         if(ob==NULL)
208                 return NULL;
209
210         BKE_ptcache_ids_from_object(&pidlist, ob);
211
212         /* in the case of only one editable thing, set pset->edittype accordingly */
213         if(pidlist.first && pidlist.first == pidlist.last) {
214                 pid = pidlist.first;
215                 switch(pid->type) {
216                         case PTCACHE_TYPE_PARTICLES:
217                                 pset->edittype = PE_TYPE_PARTICLES;
218                                 break;
219                         case PTCACHE_TYPE_SOFTBODY:
220                                 pset->edittype = PE_TYPE_SOFTBODY;
221                                 break;
222                         case PTCACHE_TYPE_CLOTH:
223                                 pset->edittype = PE_TYPE_CLOTH;
224                                 break;
225                 }
226         }
227
228         for(pid=pidlist.first; pid; pid=pid->next) {
229                 if(pset->edittype == PE_TYPE_PARTICLES && pid->type == PTCACHE_TYPE_PARTICLES) {
230                         ParticleSystem *psys = pid->calldata;
231
232                         if(psys->flag & PSYS_CURRENT) {
233                                 if(psys->part && psys->part->type == PART_HAIR) {
234                                         if(psys->flag & PSYS_HAIR_DYNAMICS && psys->pointcache->flag & PTCACHE_BAKED) {
235                                                 if(create && !psys->pointcache->edit)
236                                                         PE_create_particle_edit(scene, ob, pid->cache, NULL);
237                                                 edit = pid->cache->edit;
238                                         }
239                                         else {
240                                                 if(create && !psys->edit && psys->flag & PSYS_HAIR_DONE)
241                                                         PE_create_particle_edit(scene, ob, NULL, psys);
242                                                 edit = psys->edit;
243                                         }
244                                 }
245                                 else {
246                                         if(create && pid->cache->flag & PTCACHE_BAKED && !pid->cache->edit)
247                                                 PE_create_particle_edit(scene, ob, pid->cache, psys);
248                                         edit = pid->cache->edit;
249                                 }
250
251                                 break;
252                         }
253                 }
254                 else if(pset->edittype == PE_TYPE_SOFTBODY && pid->type == PTCACHE_TYPE_SOFTBODY) {
255                         if(create && pid->cache->flag & PTCACHE_BAKED && !pid->cache->edit)
256                                 PE_create_particle_edit(scene, ob, pid->cache, NULL);
257                         edit = pid->cache->edit;
258                         break;
259                 }
260                 else if(pset->edittype == PE_TYPE_CLOTH && pid->type == PTCACHE_TYPE_CLOTH) {
261                         if(create && pid->cache->flag & PTCACHE_BAKED && !pid->cache->edit)
262                                 PE_create_particle_edit(scene, ob, pid->cache, NULL);
263                         edit = pid->cache->edit;
264                         break;
265                 }
266         }
267
268         if(edit)
269                 edit->pid = *pid;
270
271         BLI_freelistN(&pidlist);
272
273         return edit;
274 }
275
276 PTCacheEdit *PE_get_current(Scene *scene, Object *ob)
277 {
278         return pe_get_current(scene, ob, 0);
279 }
280
281 PTCacheEdit *PE_create_current(Scene *scene, Object *ob)
282 {
283         return pe_get_current(scene, ob, 1);
284 }
285
286 void PE_current_changed(Scene *scene, Object *ob)
287 {
288         if(ob->mode == OB_MODE_PARTICLE_EDIT)
289                 PE_create_current(scene, ob);
290 }
291
292 void PE_hide_keys_time(Scene *scene, PTCacheEdit *edit, float cfra)
293 {
294         ParticleEditSettings *pset=PE_settings(scene);
295         POINT_P; KEY_K;
296
297
298         if(pset->flag & PE_FADE_TIME && pset->selectmode==SCE_SELECT_POINT) {
299                 LOOP_POINTS {
300                         LOOP_KEYS {
301                                 if(fabs(cfra-*key->time) < pset->fade_frames)
302                                         key->flag &= ~PEK_HIDE;
303                                 else {
304                                         key->flag |= PEK_HIDE;
305                                         //key->flag &= ~PEK_SELECT;
306                                 }
307                         }
308                 }
309         }
310         else {
311                 LOOP_POINTS {
312                         LOOP_KEYS {
313                                 key->flag &= ~PEK_HIDE;
314                         }
315                 }
316         }
317 }
318
319 /****************** common struct passed to callbacks ******************/
320
321 typedef struct PEData {
322         ViewContext vc;
323         bglMats mats;
324         
325         Scene *scene;
326         Object *ob;
327         DerivedMesh *dm;
328         PTCacheEdit *edit;
329
330         short *mval;
331         rcti *rect;
332         float rad;
333         float dist;
334         float dval;
335         int select;
336
337         float *dvec;
338         float combfac;
339         float pufffac;
340         float cutfac;
341         float smoothfac;
342         float weightfac;
343         float growfac;
344         int totrekey;
345
346         int invert;
347         int tot;
348         float vec[3];
349 } PEData;
350
351 static void PE_set_data(bContext *C, PEData *data)
352 {
353         memset(data, 0, sizeof(*data));
354
355         data->scene= CTX_data_scene(C);
356         data->ob= CTX_data_active_object(C);
357         data->edit= PE_get_current(data->scene, data->ob);
358 }
359
360 static void PE_set_view3d_data(bContext *C, PEData *data)
361 {
362         PE_set_data(C, data);
363
364         view3d_set_viewcontext(C, &data->vc);
365         view3d_get_transformation(&data->vc, data->ob, &data->mats);
366
367         if((data->vc.v3d->drawtype>OB_WIRE) && (data->vc.v3d->flag & V3D_ZBUF_SELECT))
368                 view3d_validate_backbuf(&data->vc);
369 }
370
371 /*************************** selection utilities *******************************/
372
373 static int key_test_depth(PEData *data, float co[3])
374 {
375         View3D *v3d= data->vc.v3d;
376         RegionView3D *rv3d= data->vc.rv3d;
377         double ux, uy, uz;
378         float depth;
379         short wco[3], x,y;
380
381         /* nothing to do */
382         if((v3d->drawtype<=OB_WIRE) || (v3d->flag & V3D_ZBUF_SELECT)==0)
383                 return 1;
384
385         project_short(data->vc.ar, co, wco);
386         
387         if(wco[0] == IS_CLIPPED)
388                 return 0;
389
390         gluProject(co[0],co[1],co[2], data->mats.modelview, data->mats.projection,
391                 (GLint *)data->mats.viewport, &ux, &uy, &uz);
392
393         x=wco[0];
394         y=wco[1];
395
396         // XXX verify ..
397
398         if(rv3d->depths && x<rv3d->depths->w && y<rv3d->depths->h) {
399                 /* the 0.0001 is an experimental threshold to make selecting keys right next to a surface work better */
400                 if((float)uz - 0.0001 > rv3d->depths->depths[y*rv3d->depths->w+x])
401                         return 0;
402                 else
403                         return 1;
404         }
405         else {
406                 x+= (short)data->vc.ar->winrct.xmin;
407                 y+= (short)data->vc.ar->winrct.ymin;
408
409                 glReadPixels(x, y, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &depth);
410
411                 if((float)uz - 0.0001 > depth)
412                         return 0;
413                 else
414                         return 1;
415         }
416 }
417
418 static int key_inside_circle(PEData *data, float rad, float co[3], float *distance)
419 {
420         float dx, dy, dist;
421         short sco[2];
422
423         project_short(data->vc.ar, co, sco);
424         
425         if(sco[0] == IS_CLIPPED)
426                 return 0;
427         
428         dx= data->mval[0] - sco[0];
429         dy= data->mval[1] - sco[1];
430         dist= sqrt(dx*dx + dy*dy);
431
432         if(dist > rad)
433                 return 0;
434
435         if(key_test_depth(data, co)) {
436                 if(distance)
437                         *distance=dist;
438
439                 return 1;
440         }
441         
442         return 0;
443 }
444
445 static int key_inside_rect(PEData *data, float co[3])
446 {
447         short sco[2];
448
449         project_short(data->vc.ar, co,sco);
450
451         if(sco[0] == IS_CLIPPED)
452                 return 0;
453         
454         if(sco[0] > data->rect->xmin && sco[0] < data->rect->xmax &&
455            sco[1] > data->rect->ymin && sco[1] < data->rect->ymax)
456                 return key_test_depth(data, co);
457
458         return 0;
459 }
460
461 static int key_inside_test(PEData *data, float co[3])
462 {
463         if(data->mval)
464                 return key_inside_circle(data, data->rad, co, NULL);
465         else
466                 return key_inside_rect(data, co);
467 }
468
469 static int point_is_selected(PTCacheEditPoint *point)
470 {
471         KEY_K;
472         int sel;
473
474         if(point->flag & PEP_HIDE)
475                 return 0;
476
477         sel= 0;
478
479         LOOP_SELECTED_KEYS {
480                 return 1;
481         }
482         
483         return 0;
484 }
485
486 /*************************** iterators *******************************/
487
488 typedef void (*ForPointFunc)(PEData *data, int point_index);
489 typedef void (*ForKeyFunc)(PEData *data, int point_index, int key_index);
490 typedef void (*ForKeyMatFunc)(PEData *data, float mat[][4], float imat[][4], int point_index, int key_index, PTCacheEditKey *key);
491
492 static void for_mouse_hit_keys(PEData *data, ForKeyFunc func, int nearest)
493 {
494         ParticleEditSettings *pset= PE_settings(data->scene);
495         PTCacheEdit *edit= data->edit;
496         POINT_P; KEY_K;
497         int nearest_point, nearest_key;
498         float dist= data->rad;
499
500         /* in path select mode we have no keys */
501         if(pset->selectmode==SCE_SELECT_PATH)
502                 return;
503
504         nearest_point= -1;
505         nearest_key= -1;
506
507         LOOP_VISIBLE_POINTS {
508                 if(pset->selectmode == SCE_SELECT_END) {
509                         /* only do end keys */
510                         key= point->keys + point->totkey-1;
511
512                         if(nearest) {
513                                 if(key_inside_circle(data, dist, KEY_WCO, &dist)) {
514                                         nearest_point= p;
515                                         nearest_key= point->totkey-1;
516                                 }
517                         }
518                         else if(key_inside_test(data, KEY_WCO))
519                                 func(data, p, point->totkey-1);
520                 }
521                 else {
522                         /* do all keys */
523                         LOOP_VISIBLE_KEYS {
524                                 if(nearest) {
525                                         if(key_inside_circle(data, dist, KEY_WCO, &dist)) {
526                                                 nearest_point= p;
527                                                 nearest_key= k;
528                                         }
529                                 }
530                                 else if(key_inside_test(data, KEY_WCO))
531                                         func(data, p, k);
532                         }
533                 }
534         }
535
536         /* do nearest only */
537         if(nearest && nearest_point > -1)
538                 func(data, nearest_point, nearest_key);
539 }
540
541 static void foreach_mouse_hit_point(PEData *data, ForPointFunc func, int selected)
542 {
543         ParticleEditSettings *pset= PE_settings(data->scene);
544         PTCacheEdit *edit= data->edit;
545         POINT_P; KEY_K;
546
547         /* all is selected in path mode */
548         if(pset->selectmode==SCE_SELECT_PATH)
549                 selected=0;
550
551         LOOP_VISIBLE_POINTS {
552                 if(pset->selectmode==SCE_SELECT_END) {
553                         /* only do end keys */
554                         key= point->keys + point->totkey - 1;
555
556                         if(selected==0 || key->flag & PEK_SELECT)
557                                 if(key_inside_circle(data, data->rad, KEY_WCO, &data->dist))
558                                         func(data, p);
559                 }
560                 else {
561                         /* do all keys */
562                         LOOP_VISIBLE_KEYS {
563                                 if(selected==0 || key->flag & PEK_SELECT) {
564                                         if(key_inside_circle(data, data->rad, KEY_WCO, &data->dist)) {
565                                                 func(data, p);
566                                                 break;
567                                         }
568                                 }
569                         }
570                 }
571         }
572 }
573
574 static void foreach_mouse_hit_key(PEData *data, ForKeyMatFunc func, int selected)
575 {
576         PTCacheEdit *edit = data->edit;
577         ParticleSystem *psys = edit->psys;
578         ParticleSystemModifierData *psmd = NULL;
579         ParticleEditSettings *pset= PE_settings(data->scene);
580         POINT_P; KEY_K;
581         float mat[4][4], imat[4][4];
582
583         if(edit->psys)
584                 psmd= psys_get_modifier(data->ob, edit->psys);
585
586         /* all is selected in path mode */
587         if(pset->selectmode==SCE_SELECT_PATH)
588                 selected= 0;
589
590         unit_m4(imat);
591         unit_m4(mat);
592
593         LOOP_VISIBLE_POINTS {
594                 if(edit->psys && !(edit->psys->flag & PSYS_GLOBAL_HAIR)) {
595                         psys_mat_hair_to_global(data->ob, psmd->dm, psys->part->from, psys->particles + p, mat);
596                         invert_m4_m4(imat,mat);
597                 }
598
599                 if(pset->selectmode==SCE_SELECT_END) {
600                         /* only do end keys */
601                         key= point->keys + point->totkey-1;
602
603                         if(selected==0 || key->flag & PEK_SELECT)
604                                 if(key_inside_circle(data, data->rad, KEY_WCO, &data->dist))
605                                         func(data, mat, imat, p, point->totkey-1, key);
606                 }
607                 else {
608                         /* do all keys */
609                         LOOP_VISIBLE_KEYS {
610                                 if(selected==0 || key->flag & PEK_SELECT)
611                                         if(key_inside_circle(data, data->rad, KEY_WCO, &data->dist))
612                                                 func(data, mat, imat, p, k, key);
613                         }
614                 }
615         }
616 }
617
618 static void foreach_selected_point(PEData *data, ForPointFunc func)
619 {
620         PTCacheEdit *edit = data->edit;
621         POINT_P;
622
623         LOOP_SELECTED_POINTS {
624                 func(data, p);
625         }
626 }
627
628 static void foreach_selected_key(PEData *data, ForKeyFunc func)
629 {
630         PTCacheEdit *edit = data->edit;
631         POINT_P; KEY_K;
632
633         LOOP_VISIBLE_POINTS {
634                 LOOP_SELECTED_KEYS {
635                         func(data, p, k);
636                 }
637         }
638 }
639
640 static void foreach_point(PEData *data, ForPointFunc func)
641 {
642         PTCacheEdit *edit = data->edit;
643         POINT_P;
644
645         LOOP_POINTS { 
646                 func(data, p);
647         }
648 }
649
650 static int count_selected_keys(Scene *scene, PTCacheEdit *edit)
651 {
652         ParticleEditSettings *pset= PE_settings(scene);
653         POINT_P; KEY_K;
654         int sel= 0;
655
656         LOOP_VISIBLE_POINTS {
657                 if(pset->selectmode==SCE_SELECT_POINT) {
658                         LOOP_SELECTED_KEYS {
659                                 sel++;
660                         }
661                 }
662                 else if(pset->selectmode==SCE_SELECT_END) {
663                         key = point->keys + point->totkey - 1;
664                         if(key->flag & PEK_SELECT)
665                                 sel++;
666                 }
667         }
668
669         return sel;
670 }
671
672 /************************************************/
673 /*                      Particle Edit Mirroring                         */
674 /************************************************/
675
676 static void PE_update_mirror_cache(Object *ob, ParticleSystem *psys)
677 {
678         PTCacheEdit *edit;
679         ParticleSystemModifierData *psmd;
680         KDTree *tree;
681         KDTreeNearest nearest;
682         HairKey *key;
683         PARTICLE_P;
684         float mat[4][4], co[3];
685         int index, totpart;
686
687         edit= psys->edit;
688         psmd= psys_get_modifier(ob, psys);
689         totpart= psys->totpart;
690
691         if(!psmd->dm)
692                 return;
693
694         tree= BLI_kdtree_new(totpart);
695
696         /* insert particles into kd tree */
697         LOOP_PARTICLES {
698                 key = pa->hair;
699                 psys_mat_hair_to_orco(ob, psmd->dm, psys->part->from, pa, mat);
700                 VECCOPY(co, key->co);
701                 mul_m4_v3(mat, co);
702                 BLI_kdtree_insert(tree, p, co, NULL);
703         }
704
705         BLI_kdtree_balance(tree);
706
707         /* lookup particles and set in mirror cache */
708         if(!edit->mirror_cache)
709                 edit->mirror_cache= MEM_callocN(sizeof(int)*totpart, "PE mirror cache");
710         
711         LOOP_PARTICLES {
712                 key = pa->hair;
713                 psys_mat_hair_to_orco(ob, psmd->dm, psys->part->from, pa, mat);
714                 VECCOPY(co, key->co);
715                 mul_m4_v3(mat, co);
716                 co[0]= -co[0];
717
718                 index= BLI_kdtree_find_nearest(tree, co, NULL, &nearest);
719
720                 /* this needs a custom threshold still, duplicated for editmode mirror */
721                 if(index != -1 && index != p && (nearest.dist <= 0.0002f))
722                         edit->mirror_cache[p]= index;
723                 else
724                         edit->mirror_cache[p]= -1;
725         }
726
727         /* make sure mirrors are in two directions */
728         LOOP_PARTICLES {
729                 if(edit->mirror_cache[p]) {
730                         index= edit->mirror_cache[p];
731                         if(edit->mirror_cache[index] != p)
732                                 edit->mirror_cache[p]= -1;
733                 }
734         }
735
736         BLI_kdtree_free(tree);
737 }
738
739 static void PE_mirror_particle(Object *ob, DerivedMesh *dm, ParticleSystem *psys, ParticleData *pa, ParticleData *mpa)
740 {
741         HairKey *hkey, *mhkey;
742         PTCacheEditPoint *point, *mpoint;
743         PTCacheEditKey *key, *mkey;
744         PTCacheEdit *edit;
745         float mat[4][4], mmat[4][4], immat[4][4];
746         int i, mi, k;
747
748         edit= psys->edit;
749         i= pa - psys->particles;
750
751         /* find mirrored particle if needed */
752         if(!mpa) {
753                 if(!edit->mirror_cache)
754                         PE_update_mirror_cache(ob, psys);
755
756                 mi= edit->mirror_cache[i];
757                 if(mi == -1)
758                         return;
759                 mpa= psys->particles + mi;
760         }
761         else
762                 mi= mpa - psys->particles;
763
764         point = edit->points + i;
765         mpoint = edit->points + mi;
766
767         /* make sure they have the same amount of keys */
768         if(pa->totkey != mpa->totkey) {
769                 if(mpa->hair) MEM_freeN(mpa->hair);
770                 if(mpoint->keys) MEM_freeN(mpoint->keys);
771
772                 mpa->hair= MEM_dupallocN(pa->hair);
773                 mpoint->keys= MEM_dupallocN(point->keys);
774                 mpoint->totkey= point->totkey;
775
776                 mhkey= mpa->hair;
777                 mkey= mpoint->keys;
778                 for(k=0; k<mpa->totkey; k++, mkey++, mhkey++) {
779                         mkey->co= mhkey->co;
780                         mkey->time= &mhkey->time;
781                         mkey->flag &= PEK_SELECT;
782                 }
783         }
784
785         /* mirror positions and tags */
786         psys_mat_hair_to_orco(ob, dm, psys->part->from, pa, mat);
787         psys_mat_hair_to_orco(ob, dm, psys->part->from, mpa, mmat);
788         invert_m4_m4(immat, mmat);
789
790         hkey=pa->hair;
791         mhkey=mpa->hair;
792         key= point->keys;
793         mkey= mpoint->keys;
794         for(k=0; k<pa->totkey; k++, hkey++, mhkey++, key++, mkey++) {
795                 VECCOPY(mhkey->co, hkey->co);
796                 mul_m4_v3(mat, mhkey->co);
797                 mhkey->co[0]= -mhkey->co[0];
798                 mul_m4_v3(immat, mhkey->co);
799
800                 if(key->flag & PEK_TAG)
801                         mkey->flag |= PEK_TAG;
802         }
803
804         if(point->flag & PEP_TAG)
805                 mpoint->flag |= PEP_TAG;
806         if(point->flag & PEP_EDIT_RECALC)
807                 mpoint->flag |= PEP_EDIT_RECALC;
808 }
809
810 static void PE_apply_mirror(Object *ob, ParticleSystem *psys)
811 {
812         PTCacheEdit *edit;
813         ParticleSystemModifierData *psmd;
814         POINT_P;
815
816         if(!psys)
817                 return;
818
819         edit= psys->edit;
820         psmd= psys_get_modifier(ob, psys);
821
822         if(!edit->mirror_cache || !psmd->dm)
823                 return;
824
825         /* we delay settings the PARS_EDIT_RECALC for mirrored particles
826          * to avoid doing mirror twice */
827         LOOP_POINTS {
828                 if(point->flag & PEP_EDIT_RECALC) {
829                         PE_mirror_particle(ob, psmd->dm, psys, psys->particles + p, NULL);
830
831                         if(edit->mirror_cache[p] != -1)
832                                 edit->points[edit->mirror_cache[p]].flag &= ~PEP_EDIT_RECALC;
833                 }
834         }
835
836         LOOP_POINTS {
837                 if(point->flag & PEP_EDIT_RECALC)
838                         if(edit->mirror_cache[p] != -1)
839                                 edit->points[edit->mirror_cache[p]].flag |= PEP_EDIT_RECALC;
840         }
841 }
842
843 /************************************************/
844 /*                      Edit Calculation                                        */
845 /************************************************/
846 /* tries to stop edited particles from going through the emitter's surface */
847 static void pe_deflect_emitter(Scene *scene, Object *ob, PTCacheEdit *edit)
848 {
849         ParticleEditSettings *pset= PE_settings(scene);
850         ParticleSystem *psys;
851         ParticleSystemModifierData *psmd;
852         POINT_P; KEY_K;
853         int index;
854         float *vec, *nor, dvec[3], dot, dist_1st=0.0f;
855         float hairimat[4][4], hairmat[4][4];
856
857         if(edit==NULL || edit->psys==NULL || (pset->flag & PE_DEFLECT_EMITTER)==0 || (edit->psys->flag & PSYS_GLOBAL_HAIR))
858                 return;
859
860         psys = edit->psys;
861         psmd = psys_get_modifier(ob,psys);
862
863         if(!psmd->dm)
864                 return;
865
866         LOOP_EDITED_POINTS {
867                 psys_mat_hair_to_object(ob, psmd->dm, psys->part->from, psys->particles + p, hairmat);
868         
869                 LOOP_KEYS {
870                         mul_m4_v3(hairmat, key->co);
871                 }
872
873                 LOOP_KEYS {
874                         if(k==0) {
875                                 dist_1st = len_v3v3((key+1)->co, key->co);
876                                 dist_1st *= 0.75f * pset->emitterdist;
877                         }
878                         else {
879                                 index= BLI_kdtree_find_nearest(edit->emitter_field,key->co,NULL,NULL);
880                                 
881                                 vec=edit->emitter_cosnos +index*6;
882                                 nor=vec+3;
883
884                                 sub_v3_v3v3(dvec, key->co, vec);
885
886                                 dot=dot_v3v3(dvec,nor);
887                                 VECCOPY(dvec,nor);
888
889                                 if(dot>0.0f) {
890                                         if(dot<dist_1st) {
891                                                 normalize_v3(dvec);
892                                                 mul_v3_fl(dvec,dist_1st-dot);
893                                                 add_v3_v3v3(key->co,key->co,dvec);
894                                         }
895                                 }
896                                 else {
897                                         normalize_v3(dvec);
898                                         mul_v3_fl(dvec,dist_1st-dot);
899                                         add_v3_v3v3(key->co,key->co,dvec);
900                                 }
901                                 if(k==1)
902                                         dist_1st*=1.3333f;
903                         }
904                 }
905                 
906                 invert_m4_m4(hairimat,hairmat);
907
908                 LOOP_KEYS {
909                         mul_m4_v3(hairimat, key->co);
910                 }
911         }
912 }
913 /* force set distances between neighbouring keys */
914 void PE_apply_lengths(Scene *scene, PTCacheEdit *edit)
915 {
916         
917         ParticleEditSettings *pset=PE_settings(scene);
918         POINT_P; KEY_K;
919         float dv1[3];
920
921         if(edit==0 || (pset->flag & PE_KEEP_LENGTHS)==0)
922                 return;
923
924         if(edit->psys && edit->psys->flag & PSYS_GLOBAL_HAIR)
925                 return;
926
927         LOOP_EDITED_POINTS {
928                 LOOP_KEYS {
929                         if(k) {
930                                 sub_v3_v3v3(dv1, key->co, (key - 1)->co);
931                                 normalize_v3(dv1);
932                                 mul_v3_fl(dv1, (key - 1)->length);
933                                 add_v3_v3v3(key->co, (key - 1)->co, dv1);
934                         }
935                 }
936         }
937 }
938 /* try to find a nice solution to keep distances between neighbouring keys */
939 static void pe_iterate_lengths(Scene *scene, PTCacheEdit *edit)
940 {
941         ParticleEditSettings *pset=PE_settings(scene);
942         POINT_P;
943         PTCacheEditKey *key;
944         int j, k;
945         float tlen;
946         float dv0[3]= {0.0f, 0.0f, 0.0f};
947         float dv1[3]= {0.0f, 0.0f, 0.0f};
948         float dv2[3]= {0.0f, 0.0f, 0.0f};
949
950         if(edit==0 || (pset->flag & PE_KEEP_LENGTHS)==0)
951                 return;
952
953         if(edit->psys && edit->psys->flag & PSYS_GLOBAL_HAIR)
954                 return;
955
956         LOOP_EDITED_POINTS {
957                 for(j=1; j<point->totkey; j++) {
958                         float mul= 1.0f / (float)point->totkey;
959
960                         if(pset->flag & PE_LOCK_FIRST) {
961                                 key= point->keys + 1;
962                                 k= 1;
963                                 dv1[0]= dv1[1]= dv1[2]= 0.0;
964                         }
965                         else {
966                                 key= point->keys;
967                                 k= 0;
968                                 dv0[0]= dv0[1]= dv0[2]= 0.0;
969                         }
970
971                         for(; k<point->totkey; k++, key++) {
972                                 if(k) {
973                                         sub_v3_v3v3(dv0, (key - 1)->co, key->co);
974                                         tlen= normalize_v3(dv0);
975                                         mul_v3_fl(dv0, (mul * (tlen - (key - 1)->length)));
976                                 }
977
978                                 if(k < point->totkey - 1) {
979                                         sub_v3_v3v3(dv2, (key + 1)->co, key->co);
980                                         tlen= normalize_v3(dv2);
981                                         mul_v3_fl(dv2, mul * (tlen - key->length));
982                                 }
983
984                                 if(k) {
985                                         add_v3_v3v3((key-1)->co,(key-1)->co,dv1);
986                                 }
987
988                                 VECADD(dv1,dv0,dv2);
989                         }
990                 }
991         }
992 }
993 /* set current distances to be kept between neighbouting keys */
994 static void recalc_lengths(PTCacheEdit *edit)
995 {
996         POINT_P; KEY_K;
997
998         if(edit==0)
999                 return;
1000
1001         LOOP_EDITED_POINTS {
1002                 key= point->keys;
1003                 for(k=0; k<point->totkey-1; k++, key++) {
1004                         key->length= len_v3v3(key->co, (key + 1)->co);
1005                 }
1006         }
1007 }
1008
1009 /* calculate a tree for finding nearest emitter's vertice */
1010 static void recalc_emitter_field(Object *ob, ParticleSystem *psys)
1011 {
1012         DerivedMesh *dm=psys_get_modifier(ob,psys)->dm;
1013         PTCacheEdit *edit= psys->edit;
1014         MFace *mface;
1015         MVert *mvert;
1016         float *vec, *nor;
1017         int i, totface, totvert;
1018
1019         if(!dm)
1020                 return;
1021
1022         if(edit->emitter_cosnos)
1023                 MEM_freeN(edit->emitter_cosnos);
1024
1025         BLI_kdtree_free(edit->emitter_field);
1026
1027         totface=dm->getNumFaces(dm);
1028         totvert=dm->getNumVerts(dm);
1029
1030         edit->emitter_cosnos=MEM_callocN(totface*6*sizeof(float),"emitter cosnos");
1031
1032         edit->emitter_field= BLI_kdtree_new(totface);
1033
1034         vec=edit->emitter_cosnos;
1035         nor=vec+3;
1036
1037         mvert=dm->getVertDataArray(dm,CD_MVERT);
1038         for(i=0; i<totface; i++, vec+=6, nor+=6) {
1039                 mface=dm->getFaceData(dm,i,CD_MFACE);
1040
1041                 mvert=dm->getVertData(dm,mface->v1,CD_MVERT);
1042                 VECCOPY(vec,mvert->co);
1043                 VECCOPY(nor,mvert->no);
1044
1045                 mvert=dm->getVertData(dm,mface->v2,CD_MVERT);
1046                 VECADD(vec,vec,mvert->co);
1047                 VECADD(nor,nor,mvert->no);
1048
1049                 mvert=dm->getVertData(dm,mface->v3,CD_MVERT);
1050                 VECADD(vec,vec,mvert->co);
1051                 VECADD(nor,nor,mvert->no);
1052
1053                 if(mface->v4) {
1054                         mvert=dm->getVertData(dm,mface->v4,CD_MVERT);
1055                         VECADD(vec,vec,mvert->co);
1056                         VECADD(nor,nor,mvert->no);
1057                         
1058                         mul_v3_fl(vec,0.25);
1059                 }
1060                 else
1061                         mul_v3_fl(vec,0.3333f);
1062
1063                 normalize_v3(nor);
1064
1065                 BLI_kdtree_insert(edit->emitter_field, i, vec, NULL);
1066         }
1067
1068         BLI_kdtree_balance(edit->emitter_field);
1069 }
1070
1071 static void PE_update_selection(Scene *scene, Object *ob, int useflag)
1072 {
1073         PTCacheEdit *edit= PE_get_current(scene, ob);
1074         HairKey *hkey;
1075         POINT_P; KEY_K;
1076
1077         /* flag all particles to be updated if not using flag */
1078         if(!useflag)
1079                 LOOP_POINTS
1080                         point->flag |= PEP_EDIT_RECALC;
1081
1082         /* flush edit key flag to hair key flag to preserve selection 
1083          * on save */
1084         if(edit->psys) LOOP_POINTS {
1085                 hkey = edit->psys->particles[p].hair;
1086                 LOOP_KEYS {
1087                         hkey->editflag= key->flag;
1088                         hkey++;
1089                 }
1090         }
1091
1092         psys_cache_edit_paths(scene, ob, edit, CFRA);
1093
1094
1095         /* disable update flag */
1096         LOOP_POINTS
1097                 point->flag &= ~PEP_EDIT_RECALC;
1098 }
1099
1100 static void update_world_cos(Object *ob, PTCacheEdit *edit)
1101 {
1102         ParticleSystem *psys = edit->psys;
1103         ParticleSystemModifierData *psmd= psys_get_modifier(ob, psys);
1104         POINT_P; KEY_K;
1105         float hairmat[4][4];
1106
1107         if(psys==0 || psys->edit==0 || psmd->dm==NULL)
1108                 return;
1109
1110         LOOP_POINTS {
1111                 if(!(psys->flag & PSYS_GLOBAL_HAIR))
1112                         psys_mat_hair_to_global(ob, psmd->dm, psys->part->from, psys->particles+p, hairmat);
1113
1114                 LOOP_KEYS {
1115                         VECCOPY(key->world_co,key->co);
1116                         if(!(psys->flag & PSYS_GLOBAL_HAIR))
1117                                 mul_m4_v3(hairmat, key->world_co);
1118                 }
1119         }
1120 }
1121 static void update_velocities(Object *ob, PTCacheEdit *edit)
1122 {
1123         /*TODO: get frs_sec properly */
1124         float vec1[3], vec2[3], frs_sec, dfra;
1125         POINT_P; KEY_K;
1126
1127         /* hair doesn't use velocities */
1128         if(edit->psys || !edit->points || !edit->points->keys->vel)
1129                 return;
1130
1131         frs_sec = edit->pid.flag & PTCACHE_VEL_PER_SEC ? 25.0f : 1.0f;
1132
1133         LOOP_EDITED_POINTS {
1134                 LOOP_KEYS {
1135                         if(k==0) {
1136                                 dfra = *(key+1)->time - *key->time;
1137
1138                                 if(dfra <= 0.0f)
1139                                         continue;
1140
1141                                 VECSUB(key->vel, (key+1)->co, key->co);
1142
1143                                 if(point->totkey>2) {
1144                                         VECSUB(vec1, (key+1)->co, (key+2)->co);
1145                                         project_v3_v3v3(vec2, vec1, key->vel);
1146                                         VECSUB(vec2, vec1, vec2);
1147                                         VECADDFAC(key->vel, key->vel, vec2, 0.5f);
1148                                 }
1149                         }
1150                         else if(k==point->totkey-1) {
1151                                 dfra = *key->time - *(key-1)->time;
1152
1153                                 if(dfra <= 0.0f)
1154                                         continue;
1155
1156                                 VECSUB(key->vel, key->co, (key-1)->co);
1157
1158                                 if(point->totkey>2) {
1159                                         VECSUB(vec1, (key-2)->co, (key-1)->co);
1160                                         project_v3_v3v3(vec2, vec1, key->vel);
1161                                         VECSUB(vec2, vec1, vec2);
1162                                         VECADDFAC(key->vel, key->vel, vec2, 0.5f);
1163                                 }
1164                         }
1165                         else {
1166                                 dfra = *(key+1)->time - *(key-1)->time;
1167                                 
1168                                 if(dfra <= 0.0f)
1169                                         continue;
1170
1171                                 VECSUB(key->vel, (key+1)->co, (key-1)->co);
1172                         }
1173                         mul_v3_fl(key->vel, frs_sec/dfra);
1174                 }
1175         }
1176 }
1177 void PE_update_object(Scene *scene, Object *ob, int useflag)
1178 {
1179         ParticleEditSettings *pset= PE_settings(scene);
1180         PTCacheEdit *edit = PE_get_current(scene, ob);
1181         POINT_P;
1182
1183         if(!edit)
1184                 return;
1185
1186         /* flag all particles to be updated if not using flag */
1187         if(!useflag)
1188                 LOOP_POINTS {
1189                         point->flag |= PEP_EDIT_RECALC;
1190                 }
1191
1192         /* do post process on particle edit keys */
1193         pe_iterate_lengths(scene, edit);
1194         pe_deflect_emitter(scene, ob, edit);
1195         PE_apply_lengths(scene, edit);
1196         if(pset->flag & PE_X_MIRROR)
1197                 PE_apply_mirror(ob,edit->psys);
1198         if(edit->psys)
1199                 update_world_cos(ob, edit);
1200         if(pset->flag & PE_AUTO_VELOCITY)
1201                 update_velocities(ob, edit);
1202         PE_hide_keys_time(scene, edit, CFRA);
1203
1204         /* regenerate path caches */
1205         psys_cache_edit_paths(scene, ob, edit, CFRA);
1206
1207         /* disable update flag */
1208         LOOP_POINTS {
1209                 point->flag &= ~PEP_EDIT_RECALC;
1210         }
1211
1212         if(edit->psys)
1213                 edit->psys->flag &= ~PSYS_HAIR_UPDATED;
1214 }
1215
1216 /************************************************/
1217 /*                      Edit Selections                                         */
1218 /************************************************/
1219
1220 /*-----selection callbacks-----*/
1221
1222 static void select_key(PEData *data, int point_index, int key_index)
1223 {
1224         PTCacheEdit *edit = data->edit;
1225         PTCacheEditPoint *point = edit->points + point_index;
1226         PTCacheEditKey *key = point->keys + key_index;
1227
1228         if(data->select)
1229                 key->flag |= PEK_SELECT;
1230         else
1231                 key->flag &= ~PEK_SELECT;
1232
1233         point->flag |= PEP_EDIT_RECALC;
1234 }
1235
1236 static void select_keys(PEData *data, int point_index, int key_index)
1237 {
1238         PTCacheEdit *edit = data->edit;
1239         PTCacheEditPoint *point = edit->points + point_index;
1240         KEY_K;
1241
1242         LOOP_KEYS {
1243                 if(data->select)
1244                         key->flag |= PEK_SELECT;
1245                 else
1246                         key->flag &= ~PEK_SELECT;
1247         }
1248
1249         point->flag |= PEP_EDIT_RECALC;
1250 }
1251
1252 static void toggle_key_select(PEData *data, int point_index, int key_index)
1253 {
1254         PTCacheEdit *edit = data->edit;
1255         PTCacheEditPoint *point = edit->points + point_index;
1256         PTCacheEditKey *key = point->keys + key_index;
1257
1258         key->flag ^= PEK_SELECT;
1259         point->flag |= PEP_EDIT_RECALC;
1260 }
1261
1262 /************************ de select all operator ************************/
1263
1264 static int select_all_exec(bContext *C, wmOperator *op)
1265 {
1266         Scene *scene= CTX_data_scene(C);
1267         Object *ob= CTX_data_active_object(C);
1268         PTCacheEdit *edit= PE_get_current(scene, ob);
1269         POINT_P; KEY_K;
1270         int action = RNA_enum_get(op->ptr, "action");
1271
1272         if (action == SEL_TOGGLE) {
1273                 action = SEL_SELECT;
1274                 LOOP_VISIBLE_POINTS {
1275                         LOOP_SELECTED_KEYS {
1276                                 action = SEL_DESELECT;
1277                                 break;
1278                         }
1279
1280                         if (action == SEL_DESELECT)
1281                                 break;
1282                 }
1283         }
1284
1285         LOOP_VISIBLE_POINTS {
1286                 LOOP_VISIBLE_KEYS {
1287                         switch (action) {
1288                         case SEL_SELECT:
1289                                 if ((key->flag & PEK_SELECT) == 0) {
1290                                         key->flag |= PEK_SELECT;
1291                                         point->flag |= PEP_EDIT_RECALC;
1292                                 }
1293                                 break;
1294                         case SEL_DESELECT:
1295                                 if (key->flag & PEK_SELECT) {
1296                                         key->flag &= ~PEK_SELECT;
1297                                         point->flag |= PEP_EDIT_RECALC;
1298                                 }
1299                                 break;
1300                         case SEL_INVERT:
1301                                 if ((key->flag & PEK_SELECT) == 0) {
1302                                         key->flag |= PEK_SELECT;
1303                                         point->flag |= PEP_EDIT_RECALC;
1304                                 } else {
1305                                         key->flag &= ~PEK_SELECT;
1306                                         point->flag |= PEP_EDIT_RECALC;
1307                                 }
1308                                 break;
1309                         }
1310                 }
1311         }
1312
1313         PE_update_selection(scene, ob, 1);
1314         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1315
1316         return OPERATOR_FINISHED;
1317 }
1318
1319 void PARTICLE_OT_select_all(wmOperatorType *ot)
1320 {
1321         /* identifiers */
1322         ot->name= "Selection of all particles";
1323         ot->idname= "PARTICLE_OT_select_all";
1324         
1325         /* api callbacks */
1326         ot->exec= select_all_exec;
1327         ot->poll= PE_poll;
1328
1329         /* flags */
1330         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1331
1332         WM_operator_properties_select_all(ot);
1333 }
1334
1335 /************************ pick select operator ************************/
1336
1337 int PE_mouse_particles(bContext *C, short *mval, int extend)
1338 {
1339         PEData data;
1340         Scene *scene= CTX_data_scene(C);
1341         Object *ob= CTX_data_active_object(C);
1342         PTCacheEdit *edit= PE_get_current(scene, ob);
1343         POINT_P; KEY_K;
1344         
1345         if(!PE_start_edit(edit))
1346                 return OPERATOR_CANCELLED;
1347
1348         if(!extend) {
1349                 LOOP_VISIBLE_POINTS {
1350                         LOOP_SELECTED_KEYS {
1351                                 key->flag &= ~PEK_SELECT;
1352                                 point->flag |= PEP_EDIT_RECALC;
1353                         }
1354                 }
1355         }
1356
1357         PE_set_view3d_data(C, &data);
1358         data.mval= mval;
1359         data.rad= 75.0f;
1360
1361         for_mouse_hit_keys(&data, toggle_key_select, 1);  /* nearest only */
1362
1363         PE_update_selection(scene, ob, 1);
1364         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1365
1366         return OPERATOR_FINISHED;
1367 }
1368
1369 /************************ select first operator ************************/
1370
1371 static void select_root(PEData *data, int point_index)
1372 {
1373         data->edit->points[point_index].keys->flag |= PEK_SELECT;
1374         data->edit->points[point_index].flag |= PEP_EDIT_RECALC; /* redraw selection only */
1375 }
1376
1377 static int select_first_exec(bContext *C, wmOperator *op)
1378 {
1379         PEData data;
1380
1381         PE_set_data(C, &data);
1382         foreach_point(&data, select_root);
1383
1384         PE_update_selection(data.scene, data.ob, 1);
1385         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1386
1387         return OPERATOR_FINISHED;
1388 }
1389
1390 void PARTICLE_OT_select_first(wmOperatorType *ot)
1391 {
1392         /* identifiers */
1393         ot->name= "Select First";
1394         ot->idname= "PARTICLE_OT_select_first";
1395         
1396         /* api callbacks */
1397         ot->exec= select_first_exec;
1398         ot->poll= PE_poll;
1399
1400         /* flags */
1401         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1402 }
1403
1404 /************************ select last operator ************************/
1405
1406 static void select_tip(PEData *data, int point_index)
1407 {
1408         PTCacheEditPoint *point = data->edit->points + point_index;
1409         point->keys[point->totkey - 1].flag |= PEK_SELECT;
1410         point->flag |= PEP_EDIT_RECALC; /* redraw selection only */
1411 }
1412
1413 static int select_last_exec(bContext *C, wmOperator *op)
1414 {
1415         PEData data;
1416
1417         PE_set_data(C, &data);
1418         foreach_point(&data, select_tip);
1419
1420         PE_update_selection(data.scene, data.ob, 1);
1421         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1422
1423         return OPERATOR_FINISHED;
1424 }
1425
1426 void PARTICLE_OT_select_last(wmOperatorType *ot)
1427 {
1428         /* identifiers */
1429         ot->name= "Select Last";
1430         ot->idname= "PARTICLE_OT_select_last";
1431         
1432         /* api callbacks */
1433         ot->exec= select_last_exec;
1434         ot->poll= PE_poll;
1435
1436         /* flags */
1437         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1438 }
1439
1440 /************************ select linked operator ************************/
1441
1442 static int select_linked_exec(bContext *C, wmOperator *op)
1443 {
1444         PEData data;
1445         short mval[2];
1446         int location[2];
1447
1448         RNA_int_get_array(op->ptr, "location", location);
1449         mval[0]= location[0];
1450         mval[1]= location[1];
1451
1452         view3d_operator_needs_opengl(C);
1453
1454         PE_set_view3d_data(C, &data);
1455         data.mval= mval;
1456         data.rad=75.0f;
1457         data.select= !RNA_boolean_get(op->ptr, "deselect");
1458
1459         for_mouse_hit_keys(&data, select_keys, 1);  /* nearest only */
1460         PE_update_selection(data.scene, data.ob, 1);
1461         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1462
1463         return OPERATOR_FINISHED;
1464 }
1465
1466 static int select_linked_invoke(bContext *C, wmOperator *op, wmEvent *event)
1467 {
1468         ARegion *ar= CTX_wm_region(C);
1469         int location[2];
1470
1471         location[0]= event->x - ar->winrct.xmin;
1472         location[1]= event->y - ar->winrct.ymin;
1473         RNA_int_set_array(op->ptr, "location", location);
1474
1475         return select_linked_exec(C, op);
1476 }
1477
1478 void PARTICLE_OT_select_linked(wmOperatorType *ot)
1479 {
1480         /* identifiers */
1481         ot->name= "Select Linked";
1482         ot->idname= "PARTICLE_OT_select_linked";
1483         
1484         /* api callbacks */
1485         ot->exec= select_linked_exec;
1486         ot->invoke= select_linked_invoke;
1487         ot->poll= PE_poll_3dview;
1488
1489         /* flags */
1490         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1491
1492         /* properties */
1493         RNA_def_boolean(ot->srna, "deselect", 0, "Deselect", "Deselect linked keys rather than selecting them.");
1494         RNA_def_int_vector(ot->srna, "location", 2, NULL, 0, INT_MAX, "Location", "", 0, 16384);
1495 }
1496
1497 /************************ border select operator ************************/
1498
1499 int PE_border_select(bContext *C, rcti *rect, int select, int extend)
1500 {
1501         Scene *scene= CTX_data_scene(C);
1502         Object *ob= CTX_data_active_object(C);
1503         PTCacheEdit *edit= PE_get_current(scene, ob);
1504         PEData data;
1505
1506         if(!PE_start_edit(edit))
1507                 return OPERATOR_CANCELLED;
1508
1509         if (extend == 0 && select) {
1510                 POINT_P; KEY_K;
1511
1512                 LOOP_VISIBLE_POINTS {
1513                         LOOP_SELECTED_KEYS {
1514                                 key->flag &= ~PEK_SELECT;
1515                                 point->flag |= PEP_EDIT_RECALC;
1516                         }
1517                 }
1518         }
1519
1520         PE_set_view3d_data(C, &data);
1521         data.rect= rect;
1522         data.select= select;
1523
1524         for_mouse_hit_keys(&data, select_key, 0);
1525
1526         PE_update_selection(scene, ob, 1);
1527         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1528
1529         return OPERATOR_FINISHED;
1530 }
1531
1532 /************************ circle select operator ************************/
1533
1534 int PE_circle_select(bContext *C, int selecting, short *mval, float rad)
1535 {
1536         Scene *scene= CTX_data_scene(C);
1537         Object *ob= CTX_data_active_object(C);
1538         PTCacheEdit *edit= PE_get_current(scene, ob);
1539         PEData data;
1540
1541         if(!PE_start_edit(edit))
1542                 return OPERATOR_FINISHED;
1543
1544         PE_set_view3d_data(C, &data);
1545         data.mval= mval;
1546         data.rad= rad;
1547         data.select= selecting;
1548
1549         for_mouse_hit_keys(&data, select_key, 0);
1550
1551         PE_update_selection(scene, ob, 1);
1552         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1553
1554         return OPERATOR_FINISHED;
1555 }
1556
1557 /************************ lasso select operator ************************/
1558
1559 int PE_lasso_select(bContext *C, short mcords[][2], short moves, short select)
1560 {
1561         Scene *scene= CTX_data_scene(C);
1562         Object *ob= CTX_data_active_object(C);
1563         ARegion *ar= CTX_wm_region(C);
1564         ParticleEditSettings *pset= PE_settings(scene);
1565         PTCacheEdit *edit = PE_get_current(scene, ob);
1566         ParticleSystem *psys = edit->psys;
1567         ParticleSystemModifierData *psmd = psys_get_modifier(ob, psys);
1568         POINT_P; KEY_K;
1569         float co[3], mat[4][4];
1570         short vertco[2];
1571
1572         if(!PE_start_edit(edit))
1573                 return OPERATOR_CANCELLED;
1574
1575         unit_m4(mat);
1576
1577         LOOP_VISIBLE_POINTS {
1578                 if(edit->psys && !(psys->flag & PSYS_GLOBAL_HAIR))
1579                         psys_mat_hair_to_global(ob, psmd->dm, psys->part->from, psys->particles + p, mat);
1580
1581                 if(pset->selectmode==SCE_SELECT_POINT) {
1582                         LOOP_KEYS {
1583                                 VECCOPY(co, key->co);
1584                                 mul_m4_v3(mat, co);
1585                                 project_short(ar, co, vertco);
1586                                 if((vertco[0] != IS_CLIPPED) && lasso_inside(mcords,moves,vertco[0],vertco[1])) {
1587                                         if(select && !(key->flag & PEK_SELECT)) {
1588                                                 key->flag |= PEK_SELECT;
1589                                                 point->flag |= PEP_EDIT_RECALC;
1590                                         }
1591                                         else if(key->flag & PEK_SELECT) {
1592                                                 key->flag &= ~PEK_SELECT;
1593                                                 point->flag |= PEP_EDIT_RECALC;
1594                                         }
1595                                 }
1596                         }
1597                 }
1598                 else if(pset->selectmode==SCE_SELECT_END) {
1599                         key= point->keys + point->totkey - 1;
1600
1601                         VECCOPY(co, key->co);
1602                         mul_m4_v3(mat, co);
1603                         project_short(ar, co,vertco);
1604                         if((vertco[0] != IS_CLIPPED) && lasso_inside(mcords,moves,vertco[0],vertco[1])) {
1605                                 if(select && !(key->flag & PEK_SELECT)) {
1606                                         key->flag |= PEK_SELECT;
1607                                         point->flag |= PEP_EDIT_RECALC;
1608                                 }
1609                                 else if(key->flag & PEK_SELECT) {
1610                                         key->flag &= ~PEK_SELECT;
1611                                         point->flag |= PEP_EDIT_RECALC;
1612                                 }
1613                         }
1614                 }
1615         }
1616
1617         PE_update_selection(scene, ob, 1);
1618         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1619
1620         return OPERATOR_FINISHED;
1621 }
1622
1623 /*************************** hide operator **************************/
1624
1625 static int hide_exec(bContext *C, wmOperator *op)
1626 {
1627         Object *ob= CTX_data_active_object(C);
1628         Scene *scene= CTX_data_scene(C);
1629         PTCacheEdit *edit= PE_get_current(scene, ob);
1630         POINT_P; KEY_K;
1631         
1632         if(RNA_enum_get(op->ptr, "unselected")) {
1633                 LOOP_UNSELECTED_POINTS {
1634                         point->flag |= PEP_HIDE;
1635                         point->flag |= PEP_EDIT_RECALC;
1636
1637                         LOOP_KEYS
1638                                 key->flag &= ~PEK_SELECT;
1639                 }
1640         }
1641         else {
1642                 LOOP_SELECTED_POINTS {
1643                         point->flag |= PEP_HIDE;
1644                         point->flag |= PEP_EDIT_RECALC;
1645
1646                         LOOP_KEYS
1647                                 key->flag &= ~PEK_SELECT;
1648                 }
1649         }
1650
1651         PE_update_selection(scene, ob, 1);
1652         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1653
1654         return OPERATOR_FINISHED;
1655 }
1656
1657 void PARTICLE_OT_hide(wmOperatorType *ot)
1658 {
1659         /* identifiers */
1660         ot->name= "Hide Selected";
1661         ot->idname= "PARTICLE_OT_hide";
1662         
1663         /* api callbacks */
1664         ot->exec= hide_exec;
1665         ot->poll= PE_poll;
1666
1667         /* flags */
1668         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1669
1670         /* props */
1671         RNA_def_boolean(ot->srna, "unselected", 0, "Unselected", "Hide unselected rather than selected.");
1672 }
1673
1674 /*************************** reveal operator **************************/
1675
1676 static int reveal_exec(bContext *C, wmOperator *op)
1677 {
1678         Object *ob= CTX_data_active_object(C);
1679         Scene *scene= CTX_data_scene(C);
1680         PTCacheEdit *edit= PE_get_current(scene, ob);
1681         POINT_P; KEY_K;
1682
1683         LOOP_POINTS {
1684                 if(point->flag & PEP_HIDE) {
1685                         point->flag &= ~PEP_HIDE;
1686                         point->flag |= PEP_EDIT_RECALC;
1687
1688                         LOOP_KEYS
1689                                 key->flag |= PEK_SELECT;
1690                 }
1691         }
1692
1693         PE_update_selection(scene, ob, 1);
1694         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, ob);
1695
1696         return OPERATOR_FINISHED;
1697 }
1698
1699 void PARTICLE_OT_reveal(wmOperatorType *ot)
1700 {
1701         /* identifiers */
1702         ot->name= "Reveal";
1703         ot->idname= "PARTICLE_OT_reveal";
1704         
1705         /* api callbacks */
1706         ot->exec= reveal_exec;
1707         ot->poll= PE_poll;
1708
1709         /* flags */
1710         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1711 }
1712
1713 /************************ select less operator ************************/
1714
1715 static void select_less_keys(PEData *data, int point_index)
1716 {
1717         PTCacheEdit *edit= data->edit;
1718         PTCacheEditPoint *point = edit->points + point_index;
1719         KEY_K;
1720
1721         LOOP_SELECTED_KEYS {
1722                 if(k==0) {
1723                         if(((key+1)->flag&PEK_SELECT)==0)
1724                                 key->flag |= PEK_TAG;
1725                 }
1726                 else if(k==point->totkey-1) {
1727                         if(((key-1)->flag&PEK_SELECT)==0)
1728                                 key->flag |= PEK_TAG;
1729                 }
1730                 else {
1731                         if((((key-1)->flag & (key+1)->flag) & PEK_SELECT)==0)
1732                                 key->flag |= PEK_TAG;
1733                 }
1734         }
1735
1736         LOOP_KEYS {
1737                 if(key->flag&PEK_TAG) {
1738                         key->flag &= ~(PEK_TAG|PEK_SELECT);
1739                         point->flag |= PEP_EDIT_RECALC; /* redraw selection only */
1740                 }
1741         }
1742 }
1743
1744 static int select_less_exec(bContext *C, wmOperator *op)
1745 {
1746         PEData data;
1747
1748         PE_set_data(C, &data);
1749         foreach_point(&data, select_less_keys);
1750
1751         PE_update_selection(data.scene, data.ob, 1);
1752         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1753
1754         return OPERATOR_FINISHED;
1755 }
1756
1757 void PARTICLE_OT_select_less(wmOperatorType *ot)
1758 {
1759         /* identifiers */
1760         ot->name= "Select Less";
1761         ot->idname= "PARTICLE_OT_select_less";
1762         
1763         /* api callbacks */
1764         ot->exec= select_less_exec;
1765         ot->poll= PE_poll;
1766
1767         /* flags */
1768         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1769 }
1770
1771 /************************ select more operator ************************/
1772
1773 static void select_more_keys(PEData *data, int point_index)
1774 {
1775         PTCacheEdit *edit= data->edit;
1776         PTCacheEditPoint *point = edit->points + point_index;
1777         KEY_K;
1778
1779         LOOP_KEYS {
1780                 if(key->flag & PEK_SELECT) continue;
1781
1782                 if(k==0) {
1783                         if((key+1)->flag&PEK_SELECT)
1784                                 key->flag |= PEK_TAG;
1785                 }
1786                 else if(k==point->totkey-1) {
1787                         if((key-1)->flag&PEK_SELECT)
1788                                 key->flag |= PEK_TAG;
1789                 }
1790                 else {
1791                         if(((key-1)->flag | (key+1)->flag) & PEK_SELECT)
1792                                 key->flag |= PEK_TAG;
1793                 }
1794         }
1795
1796         LOOP_KEYS {
1797                 if(key->flag&PEK_TAG) {
1798                         key->flag &= ~PEK_TAG;
1799                         key->flag |= PEK_SELECT;
1800                         point->flag |= PEP_EDIT_RECALC; /* redraw selection only */
1801                 }
1802         }
1803 }
1804
1805 static int select_more_exec(bContext *C, wmOperator *op)
1806 {
1807         PEData data;
1808
1809         PE_set_data(C, &data);
1810         foreach_point(&data, select_more_keys);
1811
1812         PE_update_selection(data.scene, data.ob, 1);
1813         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1814
1815         return OPERATOR_FINISHED;
1816 }
1817
1818 void PARTICLE_OT_select_more(wmOperatorType *ot)
1819 {
1820         /* identifiers */
1821         ot->name= "Select More";
1822         ot->idname= "PARTICLE_OT_select_more";
1823         
1824         /* api callbacks */
1825         ot->exec= select_more_exec;
1826         ot->poll= PE_poll;
1827
1828         /* flags */
1829         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1830 }
1831
1832 static int select_inverse_exec(bContext *C, wmOperator *op)
1833 {
1834         PEData data;
1835         PTCacheEdit *edit;
1836         POINT_P; KEY_K;
1837
1838         PE_set_data(C, &data);
1839
1840         edit= PE_get_current(data.scene, data.ob);
1841
1842         LOOP_VISIBLE_POINTS {
1843                 LOOP_KEYS {
1844                         key->flag ^= PEK_SELECT;
1845                         point->flag |= PEP_EDIT_RECALC; /* redraw selection only */
1846                 }
1847         }
1848
1849         PE_update_selection(data.scene, data.ob, 1);
1850         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_SELECT, data.ob);
1851
1852         return OPERATOR_FINISHED;
1853 }
1854
1855 void PARTICLE_OT_select_inverse(wmOperatorType *ot)
1856 {
1857         /* identifiers */
1858         ot->name= "Select Inverse";
1859         ot->idname= "PARTICLE_OT_select_inverse";
1860
1861         /* api callbacks */
1862         ot->exec= select_inverse_exec;
1863         ot->poll= PE_poll;
1864
1865         /* flags */
1866         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1867 }
1868
1869 /************************ rekey operator ************************/
1870
1871 static void rekey_particle(PEData *data, int pa_index)
1872 {
1873         PTCacheEdit *edit= data->edit;
1874         ParticleSystem *psys= edit->psys;
1875         ParticleSimulationData sim = {data->scene, data->ob, edit->psys, NULL};
1876         ParticleData *pa= psys->particles + pa_index;
1877         PTCacheEditPoint *point = edit->points + pa_index;
1878         ParticleKey state;
1879         HairKey *key, *new_keys, *okey;
1880         PTCacheEditKey *ekey;
1881         float dval, sta, end;
1882         int k;
1883
1884         pa->flag |= PARS_REKEY;
1885
1886         key= new_keys= MEM_callocN(data->totrekey * sizeof(HairKey),"Hair re-key keys");
1887
1888         okey = pa->hair;
1889         /* root and tip stay the same */
1890         VECCOPY(key->co, okey->co);
1891         VECCOPY((key + data->totrekey - 1)->co, (okey + pa->totkey - 1)->co);
1892
1893         sta= key->time= okey->time;
1894         end= (key + data->totrekey - 1)->time= (okey + pa->totkey - 1)->time;
1895         dval= (end - sta) / (float)(data->totrekey - 1);
1896
1897         /* interpolate new keys from old ones */
1898         for(k=1,key++; k<data->totrekey-1; k++,key++) {
1899                 state.time= (float)k / (float)(data->totrekey-1);
1900                 psys_get_particle_on_path(&sim, pa_index, &state, 0);
1901                 VECCOPY(key->co, state.co);
1902                 key->time= sta + k * dval;
1903         }
1904
1905         /* replace keys */
1906         if(pa->hair)
1907                 MEM_freeN(pa->hair);
1908         pa->hair= new_keys;
1909
1910         point->totkey=pa->totkey=data->totrekey;
1911
1912
1913         if(point->keys)
1914                 MEM_freeN(point->keys);
1915         ekey= point->keys= MEM_callocN(pa->totkey * sizeof(PTCacheEditKey),"Hair re-key edit keys");
1916                 
1917         for(k=0, key=pa->hair; k<pa->totkey; k++, key++, ekey++) {
1918                 ekey->co= key->co;
1919                 ekey->time= &key->time;
1920                 if(!(psys->flag & PSYS_GLOBAL_HAIR))
1921                         ekey->flag |= PEK_USE_WCO;
1922         }
1923
1924         pa->flag &= ~PARS_REKEY;
1925         point->flag |= PEP_EDIT_RECALC;
1926 }
1927
1928 static int rekey_exec(bContext *C, wmOperator *op)
1929 {
1930         PEData data;
1931
1932         PE_set_data(C, &data);
1933
1934         data.dval= 1.0f / (float)(data.totrekey-1);
1935         data.totrekey= RNA_int_get(op->ptr, "keys");
1936
1937         foreach_selected_point(&data, rekey_particle);
1938         
1939         recalc_lengths(data.edit);
1940         PE_update_object(data.scene, data.ob, 1);
1941         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_DATA, data.ob);
1942
1943         return OPERATOR_FINISHED;
1944 }
1945
1946 void PARTICLE_OT_rekey(wmOperatorType *ot)
1947 {
1948         /* identifiers */
1949         ot->name= "Rekey";
1950         ot->idname= "PARTICLE_OT_rekey";
1951         
1952         /* api callbacks */
1953         ot->exec= rekey_exec;
1954         ot->invoke= WM_operator_props_popup;
1955         ot->poll= PE_poll;
1956
1957         /* flags */
1958         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1959
1960         /* properties */
1961         RNA_def_int(ot->srna, "keys", 2, 2, INT_MAX, "Number of Keys", "", 2, 100);
1962 }
1963
1964 static void rekey_particle_to_time(Scene *scene, Object *ob, int pa_index, float path_time)
1965 {
1966         PTCacheEdit *edit= PE_get_current(scene, ob);
1967         ParticleSystem *psys;
1968         ParticleSimulationData sim = {scene, ob, edit ? edit->psys : NULL, NULL};
1969         ParticleData *pa;
1970         ParticleKey state;
1971         HairKey *new_keys, *key;
1972         PTCacheEditKey *ekey;
1973         int k;
1974
1975         if(!edit || !edit->psys) return;
1976
1977         psys = edit->psys;
1978
1979         pa= psys->particles + pa_index;
1980
1981         pa->flag |= PARS_REKEY;
1982
1983         key= new_keys= MEM_dupallocN(pa->hair);
1984         
1985         /* interpolate new keys from old ones (roots stay the same) */
1986         for(k=1, key++; k < pa->totkey; k++, key++) {
1987                 state.time= path_time * (float)k / (float)(pa->totkey-1);
1988                 psys_get_particle_on_path(&sim, pa_index, &state, 0);
1989                 VECCOPY(key->co, state.co);
1990         }
1991
1992         /* replace hair keys */
1993         if(pa->hair)
1994                 MEM_freeN(pa->hair);
1995         pa->hair= new_keys;
1996
1997         /* update edit pointers */
1998         for(k=0, key=pa->hair, ekey=edit->points[pa_index].keys; k<pa->totkey; k++, key++, ekey++) {
1999                 ekey->co= key->co;
2000                 ekey->time= &key->time;
2001         }
2002
2003         pa->flag &= ~PARS_REKEY;
2004 }
2005
2006 /************************* utilities **************************/
2007
2008 static int remove_tagged_particles(Scene *scene, Object *ob, ParticleSystem *psys)
2009 {
2010         PTCacheEdit *edit = psys->edit;
2011         ParticleEditSettings *pset= PE_settings(scene);
2012         ParticleData *pa, *npa=0, *new_pars=0;
2013         POINT_P;
2014         PTCacheEditPoint *npoint=0, *new_points=0;
2015         ParticleSystemModifierData *psmd;
2016         int i, totpart, new_totpart= psys->totpart, removed= 0;
2017
2018         if(pset->flag & PE_X_MIRROR) {
2019                 /* mirror tags */
2020                 psmd= psys_get_modifier(ob, psys);
2021                 totpart= psys->totpart;
2022
2023                 LOOP_TAGGED_POINTS {
2024                         PE_mirror_particle(ob, psmd->dm, psys, psys->particles + p, NULL);
2025                 }
2026         }
2027
2028         LOOP_TAGGED_POINTS {
2029                 new_totpart--;
2030                 removed++;
2031         }
2032
2033         if(new_totpart != psys->totpart) {
2034                 if(new_totpart) {
2035                         npa= new_pars= MEM_callocN(new_totpart * sizeof(ParticleData), "ParticleData array");
2036                         npoint= new_points= MEM_callocN(new_totpart * sizeof(PTCacheEditPoint), "PTCacheEditKey array");
2037                 }
2038
2039                 pa= psys->particles;
2040                 point= edit->points;
2041                 for(i=0; i<psys->totpart; i++, pa++, point++) {
2042                         if(point->flag & PEP_TAG) {
2043                                 if(point->keys)
2044                                         MEM_freeN(point->keys);
2045                                 if(pa->hair)
2046                                         MEM_freeN(pa->hair);
2047                         }
2048                         else {
2049                                 memcpy(npa, pa, sizeof(ParticleData));
2050                                 memcpy(npoint, point, sizeof(PTCacheEditPoint));
2051                                 npa++;
2052                                 npoint++;
2053                         }
2054                 }
2055
2056                 if(psys->particles) MEM_freeN(psys->particles);
2057                 psys->particles= new_pars;
2058
2059                 if(edit->points) MEM_freeN(edit->points);
2060                 edit->points= new_points;
2061
2062                 if(edit->mirror_cache) {
2063                         MEM_freeN(edit->mirror_cache);
2064                         edit->mirror_cache= NULL;
2065                 }
2066
2067                 edit->totpoint= psys->totpart= new_totpart;
2068         }
2069
2070         return removed;
2071 }
2072
2073 static void remove_tagged_keys(Scene *scene, Object *ob, ParticleSystem *psys)
2074 {
2075         PTCacheEdit *edit= psys->edit;
2076         ParticleEditSettings *pset= PE_settings(scene);
2077         ParticleData *pa;
2078         HairKey *hkey, *nhkey, *new_hkeys=0;
2079         POINT_P; KEY_K;
2080         ParticleSystemModifierData *psmd;
2081         short new_totkey;
2082
2083         if(pset->flag & PE_X_MIRROR) {
2084                 /* mirror key tags */
2085                 psmd= psys_get_modifier(ob, psys);
2086
2087                 LOOP_POINTS {
2088                         LOOP_TAGGED_KEYS {
2089                                 PE_mirror_particle(ob, psmd->dm, psys, psys->particles + p, NULL);
2090                                 break;
2091                         }
2092                 }
2093         }
2094
2095         LOOP_POINTS {
2096                 new_totkey= point->totkey;
2097                 LOOP_TAGGED_KEYS {
2098                         new_totkey--;
2099                 }
2100                 /* we can't have elements with less than two keys*/
2101                 if(new_totkey < 2)
2102                         point->flag |= PEP_TAG;
2103         }
2104         remove_tagged_particles(scene, ob, psys);
2105
2106         LOOP_POINTS {
2107                 pa = psys->particles + p;
2108                 new_totkey= pa->totkey;
2109
2110                 LOOP_TAGGED_KEYS {
2111                         new_totkey--;
2112                 }
2113
2114                 if(new_totkey != pa->totkey) {
2115                         hkey= pa->hair;
2116                         nhkey= new_hkeys= MEM_callocN(new_totkey*sizeof(HairKey), "HairKeys");
2117
2118                         LOOP_KEYS {
2119                                 while(key->flag & PEK_TAG && hkey < pa->hair + pa->totkey) {
2120                                         key++;
2121                                         hkey++;
2122                                 }
2123
2124                                 if(hkey < pa->hair + pa->totkey) {
2125                                         VECCOPY(nhkey->co, hkey->co);
2126                                         nhkey->time= hkey->time;
2127                                         nhkey->weight= hkey->weight;
2128                                 }
2129                                 hkey++;
2130                                 nhkey++;
2131                         }
2132                         if(pa->hair)
2133                                 MEM_freeN(pa->hair);
2134                         
2135                         pa->hair= new_hkeys;
2136
2137                         point->totkey= pa->totkey= new_totkey;
2138
2139                         if(point->keys)
2140                                 MEM_freeN(point->keys);
2141                         key= point->keys= MEM_callocN(new_totkey*sizeof(PTCacheEditKey), "particle edit keys");
2142
2143                         hkey = pa->hair;
2144                         LOOP_KEYS {
2145                                 key->co= hkey->co;
2146                                 key->time= &hkey->time;
2147                                 hkey++;
2148                         }
2149                 }
2150         }
2151 }
2152
2153 /************************ subdivide opertor *********************/
2154
2155 /* works like normal edit mode subdivide, inserts keys between neighbouring selected keys */
2156 static void subdivide_particle(PEData *data, int pa_index)
2157 {
2158         PTCacheEdit *edit= data->edit;
2159         ParticleSystem *psys= edit->psys;
2160         ParticleSimulationData sim = {data->scene, data->ob, edit->psys, NULL};
2161         ParticleData *pa= psys->particles + pa_index;
2162         PTCacheEditPoint *point = edit->points + pa_index;
2163         ParticleKey state;
2164         HairKey *key, *nkey, *new_keys;
2165         PTCacheEditKey *ekey, *nekey, *new_ekeys;
2166
2167         int k;
2168         short totnewkey=0;
2169         float endtime;
2170
2171         for(k=0, ekey=point->keys; k<pa->totkey-1; k++,ekey++) {
2172                 if(ekey->flag&PEK_SELECT && (ekey+1)->flag&PEK_SELECT)
2173                         totnewkey++;
2174         }
2175
2176         if(totnewkey==0) return;
2177
2178         pa->flag |= PARS_REKEY;
2179
2180         nkey= new_keys= MEM_callocN((pa->totkey+totnewkey)*(sizeof(HairKey)),"Hair subdivide keys");
2181         nekey= new_ekeys= MEM_callocN((pa->totkey+totnewkey)*(sizeof(PTCacheEditKey)),"Hair subdivide edit keys");
2182         
2183         key = pa->hair;
2184         endtime= key[pa->totkey-1].time;
2185
2186         for(k=0, ekey=point->keys; k<pa->totkey-1; k++, key++, ekey++) {
2187
2188                 memcpy(nkey,key,sizeof(HairKey));
2189                 memcpy(nekey,ekey,sizeof(PTCacheEditKey));
2190
2191                 nekey->co= nkey->co;
2192                 nekey->time= &nkey->time;
2193
2194                 nkey++;
2195                 nekey++;
2196
2197                 if(ekey->flag & PEK_SELECT && (ekey+1)->flag & PEK_SELECT) {
2198                         nkey->time= (key->time + (key+1)->time)*0.5f;
2199                         state.time= (endtime != 0.0f)? nkey->time/endtime: 0.0f;
2200                         psys_get_particle_on_path(&sim, pa_index, &state, 0);
2201                         VECCOPY(nkey->co, state.co);
2202
2203                         nekey->co= nkey->co;
2204                         nekey->time= &nkey->time;
2205                         nekey->flag |= PEK_SELECT;
2206                         if(!(psys->flag & PSYS_GLOBAL_HAIR))
2207                                 nekey->flag |= PEK_USE_WCO;
2208
2209                         nekey++;
2210                         nkey++;
2211                 }
2212         }
2213         /*tip still not copied*/
2214         memcpy(nkey,key,sizeof(HairKey));
2215         memcpy(nekey,ekey,sizeof(PTCacheEditKey));
2216
2217         nekey->co= nkey->co;
2218         nekey->time= &nkey->time;
2219
2220         if(pa->hair)
2221                 MEM_freeN(pa->hair);
2222         pa->hair= new_keys;
2223
2224         if(point->keys)
2225                 MEM_freeN(point->keys);
2226         point->keys= new_ekeys;
2227
2228         point->totkey = pa->totkey = pa->totkey + totnewkey;
2229         point->flag |= PEP_EDIT_RECALC;
2230         pa->flag &= ~PARS_REKEY;
2231 }
2232
2233 static int subdivide_exec(bContext *C, wmOperator *op)
2234 {
2235         PEData data;
2236
2237         PE_set_data(C, &data);
2238         foreach_point(&data, subdivide_particle);
2239         
2240         recalc_lengths(data.edit);
2241         PE_update_object(data.scene, data.ob, 1);
2242         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_DATA, data.ob);
2243
2244         return OPERATOR_FINISHED;
2245 }
2246
2247 void PARTICLE_OT_subdivide(wmOperatorType *ot)
2248 {
2249         /* identifiers */
2250         ot->name= "Subdivide";
2251         ot->idname= "PARTICLE_OT_subdivide";
2252         
2253         /* api callbacks */
2254         ot->exec= subdivide_exec;
2255         ot->poll= PE_poll;
2256
2257         /* flags */
2258         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2259 }
2260
2261 /************************ remove doubles opertor *********************/
2262
2263 static int remove_doubles_exec(bContext *C, wmOperator *op)
2264 {
2265         Scene *scene= CTX_data_scene(C);
2266         Object *ob= CTX_data_active_object(C);
2267         ParticleEditSettings *pset=PE_settings(scene);
2268         PTCacheEdit *edit= PE_get_current(scene, ob);
2269         ParticleSystem *psys = edit->psys;
2270         ParticleSystemModifierData *psmd;
2271         KDTree *tree;
2272         KDTreeNearest nearest[10];
2273         POINT_P;
2274         float mat[4][4], co[3], threshold= RNA_float_get(op->ptr, "threshold");
2275         int n, totn, removed, flag, totremoved;
2276
2277         if(psys->flag & PSYS_GLOBAL_HAIR)
2278                 return OPERATOR_CANCELLED;
2279
2280         edit= psys->edit;
2281         psmd= psys_get_modifier(ob, psys);
2282         totremoved= 0;
2283
2284         do {
2285                 removed= 0;
2286
2287                 tree=BLI_kdtree_new(psys->totpart);
2288                         
2289                 /* insert particles into kd tree */
2290                 LOOP_SELECTED_POINTS {
2291                         psys_mat_hair_to_object(ob, psmd->dm, psys->part->from, psys->particles+p, mat);
2292                         VECCOPY(co, point->keys->co);
2293                         mul_m4_v3(mat, co);
2294                         BLI_kdtree_insert(tree, p, co, NULL);
2295                 }
2296
2297                 BLI_kdtree_balance(tree);
2298
2299                 /* tag particles to be removed */
2300                 LOOP_SELECTED_POINTS {
2301                         psys_mat_hair_to_object(ob, psmd->dm, psys->part->from, psys->particles+p, mat);
2302                         VECCOPY(co, point->keys->co);
2303                         mul_m4_v3(mat, co);
2304
2305                         totn= BLI_kdtree_find_n_nearest(tree,10,co,NULL,nearest);
2306
2307                         for(n=0; n<totn; n++) {
2308                                 /* this needs a custom threshold still */
2309                                 if(nearest[n].index > p && nearest[n].dist < threshold) {
2310                                         if(!(point->flag & PEP_TAG)) {
2311                                                 point->flag |= PEP_TAG;
2312                                                 removed++;
2313                                         }
2314                                 }
2315                         }
2316                 }
2317
2318                 BLI_kdtree_free(tree);
2319
2320                 /* remove tagged particles - don't do mirror here! */
2321                 flag= pset->flag;
2322                 pset->flag &= ~PE_X_MIRROR;
2323                 remove_tagged_particles(scene, ob, psys);
2324                 pset->flag= flag;
2325                 totremoved += removed;
2326         } while(removed);
2327
2328         if(totremoved == 0)
2329                 return OPERATOR_CANCELLED;
2330
2331         BKE_reportf(op->reports, RPT_INFO, "Remove %d double particles.", totremoved);
2332
2333         PE_update_object(scene, ob, 0);
2334         DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
2335         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_DATA, ob);
2336
2337         return OPERATOR_FINISHED;
2338 }
2339
2340 void PARTICLE_OT_remove_doubles(wmOperatorType *ot)
2341 {
2342         /* identifiers */
2343         ot->name= "Remove Doubles";
2344         ot->idname= "PARTICLE_OT_remove_doubles";
2345         
2346         /* api callbacks */
2347         ot->exec= remove_doubles_exec;
2348         ot->poll= PE_poll;
2349
2350         /* flags */
2351         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2352
2353         /* properties */
2354         RNA_def_float(ot->srna, "threshold", 0.0002f, 0.0f, FLT_MAX, "Threshold", "Threshold distance withing which particles are removed", 0.00001f, 0.1f);
2355 }
2356
2357 /************************ cursor drawing *******************************/
2358
2359 static void brush_drawcursor(bContext *C, int x, int y, void *customdata)
2360 {
2361         ParticleEditSettings *pset= PE_settings(CTX_data_scene(C));
2362         ParticleBrushData *brush;
2363
2364         if(pset->brushtype < 0)
2365                 return;
2366
2367         brush= &pset->brush[pset->brushtype];
2368
2369         if(brush) {
2370                 glPushMatrix();
2371
2372                 glTranslatef((float)x, (float)y, 0.0f);
2373
2374                 glColor4ub(255, 255, 255, 128);
2375                 glEnable(GL_LINE_SMOOTH );
2376                 glEnable(GL_BLEND);
2377                 glutil_draw_lined_arc(0.0, M_PI*2.0, brush->size, 40);
2378                 glDisable(GL_BLEND);
2379                 glDisable(GL_LINE_SMOOTH );
2380                 
2381                 glPopMatrix();
2382         }
2383 }
2384
2385 static void toggle_particle_cursor(bContext *C, int enable)
2386 {
2387         ParticleEditSettings *pset= PE_settings(CTX_data_scene(C));
2388
2389         if(pset->paintcursor && !enable) {
2390                 WM_paint_cursor_end(CTX_wm_manager(C), pset->paintcursor);
2391                 pset->paintcursor = NULL;
2392         }
2393         else if(enable)
2394                 pset->paintcursor= WM_paint_cursor_activate(CTX_wm_manager(C), PE_poll_3dview, brush_drawcursor, NULL);
2395 }
2396
2397 /********************* radial control operator *********************/
2398
2399 static int brush_radial_control_invoke(bContext *C, wmOperator *op, wmEvent *event)
2400 {
2401         ParticleEditSettings *pset= PE_settings(CTX_data_scene(C));
2402         ParticleBrushData *brush;
2403         int mode = RNA_enum_get(op->ptr, "mode");
2404         float original_value=1.0f;
2405
2406         if(pset->brushtype < 0)
2407                 return OPERATOR_CANCELLED;
2408
2409         brush= &pset->brush[pset->brushtype];
2410
2411         toggle_particle_cursor(C, 0);
2412
2413         if(mode == WM_RADIALCONTROL_SIZE)
2414                 original_value = brush->size;
2415         else if(mode == WM_RADIALCONTROL_STRENGTH)
2416                 original_value = brush->strength;
2417
2418         RNA_float_set(op->ptr, "initial_value", original_value);
2419
2420         return WM_radial_control_invoke(C, op, event);
2421 }
2422
2423 static int brush_radial_control_modal(bContext *C, wmOperator *op, wmEvent *event)
2424 {
2425         int ret = WM_radial_control_modal(C, op, event);
2426
2427         if(ret != OPERATOR_RUNNING_MODAL)
2428                 toggle_particle_cursor(C, 1);
2429
2430         return ret;
2431 }
2432
2433 static int brush_radial_control_exec(bContext *C, wmOperator *op)
2434 {
2435         ParticleEditSettings *pset= PE_settings(CTX_data_scene(C));
2436         ParticleBrushData *brush;
2437         int mode = RNA_enum_get(op->ptr, "mode");
2438         float new_value = RNA_float_get(op->ptr, "new_value");
2439
2440         if(pset->brushtype < 0)
2441                 return OPERATOR_CANCELLED;
2442
2443         brush= &pset->brush[pset->brushtype];
2444
2445         if(mode == WM_RADIALCONTROL_SIZE)
2446                 brush->size= new_value;
2447         else if(mode == WM_RADIALCONTROL_STRENGTH)
2448                 brush->strength= new_value;
2449
2450         return OPERATOR_FINISHED;
2451 }
2452
2453 void PARTICLE_OT_brush_radial_control(wmOperatorType *ot)
2454 {
2455         WM_OT_radial_control_partial(ot);
2456
2457         ot->name= "Brush Radial Control";
2458         ot->idname= "PARTICLE_OT_brush_radial_control";
2459
2460         ot->invoke= brush_radial_control_invoke;
2461         ot->modal= brush_radial_control_modal;
2462         ot->exec= brush_radial_control_exec;
2463         ot->poll= PE_poll;
2464         
2465         /* flags */
2466         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
2467 }
2468
2469 /*************************** delete operator **************************/
2470
2471 enum { DEL_PARTICLE, DEL_KEY };
2472
2473 static EnumPropertyItem delete_type_items[]= {
2474         {DEL_PARTICLE, "PARTICLE", 0, "Particle", ""},
2475         {DEL_KEY, "KEY", 0, "Key", ""},
2476         {0, NULL, 0, NULL, NULL}};
2477
2478 static void set_delete_particle(PEData *data, int pa_index)
2479 {
2480         PTCacheEdit *edit= data->edit;
2481
2482         edit->points[pa_index].flag |= PEP_TAG;
2483 }
2484
2485 static void set_delete_particle_key(PEData *data, int pa_index, int key_index)
2486 {
2487         PTCacheEdit *edit= data->edit;
2488
2489         edit->points[pa_index].keys[key_index].flag |= PEK_TAG;
2490 }
2491
2492 static int delete_exec(bContext *C, wmOperator *op)
2493 {
2494         PEData data;
2495         int type= RNA_enum_get(op->ptr, "type");
2496
2497         PE_set_data(C, &data);
2498
2499         if(type == DEL_KEY) {
2500                 foreach_selected_key(&data, set_delete_particle_key);
2501                 remove_tagged_keys(data.scene, data.ob, data.edit->psys);
2502                 recalc_lengths(data.edit);
2503         }
2504         else if(type == DEL_PARTICLE) {
2505                 foreach_selected_point(&data, set_delete_particle);
2506                 remove_tagged_particles(data.scene, data.ob, data.edit->psys);
2507                 recalc_lengths(data.edit);
2508         }
2509
2510         PE_update_object(data.scene, data.ob, 0);
2511         DAG_id_flush_update(&data.ob->id, OB_RECALC_DATA);
2512         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_DATA, data.ob);
2513
2514         return OPERATOR_FINISHED;
2515 }
2516
2517 void PARTICLE_OT_delete(wmOperatorType *ot)
2518 {
2519         /* identifiers */
2520         ot->name= "Delete";
2521         ot->idname= "PARTICLE_OT_delete";
2522         
2523         /* api callbacks */
2524         ot->exec= delete_exec;
2525         ot->invoke= WM_menu_invoke;
2526         ot->poll= PE_hair_poll;
2527
2528         /* flags */
2529         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2530
2531         /* properties */
2532         RNA_def_enum(ot->srna, "type", delete_type_items, DEL_PARTICLE, "Type", "Delete a full particle or only keys.");
2533 }
2534
2535 /*************************** mirror operator **************************/
2536
2537 static void PE_mirror_x(Scene *scene, Object *ob, int tagged)
2538 {
2539         Mesh *me= (Mesh*)(ob->data);
2540         ParticleSystemModifierData *psmd;
2541         PTCacheEdit *edit= PE_get_current(scene, ob);
2542         ParticleSystem *psys = edit->psys;
2543         ParticleData *pa, *newpa, *new_pars;
2544         PTCacheEditPoint *newpoint, *new_points;
2545         POINT_P; KEY_K;
2546         HairKey *hkey;
2547         int *mirrorfaces;
2548         int rotation, totpart, newtotpart;
2549
2550         if(psys->flag & PSYS_GLOBAL_HAIR)
2551                 return;
2552
2553         psmd= psys_get_modifier(ob, psys);
2554         if(!psmd->dm)
2555                 return;
2556
2557         mirrorfaces= mesh_get_x_mirror_faces(ob, NULL);
2558
2559         if(!edit->mirror_cache)
2560                 PE_update_mirror_cache(ob, psys);
2561
2562         totpart= psys->totpart;
2563         newtotpart= psys->totpart;
2564         LOOP_VISIBLE_POINTS {
2565                 pa = psys->particles + p;
2566                 if(!tagged) {
2567                         if(point_is_selected(point)) {
2568                                 if(edit->mirror_cache[p] != -1) {
2569                                         /* already has a mirror, don't need to duplicate */
2570                                         PE_mirror_particle(ob, psmd->dm, psys, pa, NULL);
2571                                         continue;
2572                                 }
2573                                 else
2574                                         point->flag |= PEP_TAG;
2575                         }
2576                 }
2577
2578                 if((point->flag & PEP_TAG) && mirrorfaces[pa->num*2] != -1)
2579                         newtotpart++;
2580         }
2581
2582         if(newtotpart != psys->totpart) {
2583                 /* allocate new arrays and copy existing */
2584                 new_pars= MEM_callocN(newtotpart*sizeof(ParticleData), "ParticleData new");
2585                 new_points= MEM_callocN(newtotpart*sizeof(PTCacheEditPoint), "PTCacheEditPoint new");
2586
2587                 if(psys->particles) {
2588                         memcpy(new_pars, psys->particles, totpart*sizeof(ParticleData));
2589                         MEM_freeN(psys->particles);
2590                 }
2591                 psys->particles= new_pars;
2592
2593                 if(edit->points) {
2594                         memcpy(new_points, edit->points, totpart*sizeof(PTCacheEditPoint));
2595                         MEM_freeN(edit->points);
2596                 }
2597                 edit->points= new_points;
2598
2599                 if(edit->mirror_cache) {
2600                         MEM_freeN(edit->mirror_cache);
2601                         edit->mirror_cache= NULL;
2602                 }
2603
2604                 edit->totpoint= psys->totpart= newtotpart;
2605                         
2606                 /* create new elements */
2607                 newpa= psys->particles + totpart;
2608                 newpoint= edit->points + totpart;
2609
2610                 LOOP_VISIBLE_POINTS {
2611                         pa = psys->particles + p;
2612
2613                         if(!(point->flag & PEP_TAG) || mirrorfaces[pa->num*2] == -1)
2614                                 continue;
2615
2616                         /* duplicate */
2617                         *newpa= *pa;
2618                         *newpoint= *point;
2619                         if(pa->hair) newpa->hair= MEM_dupallocN(pa->hair);
2620                         if(point->keys) newpoint->keys= MEM_dupallocN(point->keys);
2621
2622                         /* rotate weights according to vertex index rotation */
2623                         rotation= mirrorfaces[pa->num*2+1];
2624                         newpa->fuv[0]= pa->fuv[2];
2625                         newpa->fuv[1]= pa->fuv[1];
2626                         newpa->fuv[2]= pa->fuv[0];
2627                         newpa->fuv[3]= pa->fuv[3];
2628                         while(rotation-- > 0)
2629                                 if(me->mface[pa->num].v4)
2630                                         SHIFT4(float, newpa->fuv[0], newpa->fuv[1], newpa->fuv[2], newpa->fuv[3])
2631                                 else
2632                                         SHIFT3(float, newpa->fuv[0], newpa->fuv[1], newpa->fuv[2])
2633
2634                         /* assign face inddex */
2635                         newpa->num= mirrorfaces[pa->num*2];
2636                         newpa->num_dmcache= psys_particle_dm_face_lookup(ob,psmd->dm,newpa->num,newpa->fuv, NULL);
2637
2638                         /* update edit key pointers */
2639                         key= newpoint->keys;
2640                         for(k=0, hkey=newpa->hair; k<newpa->totkey; k++, hkey++, key++) {
2641                                 key->co= hkey->co;
2642                                 key->time= &hkey->time;
2643                         }
2644
2645                         /* map key positions as mirror over x axis */
2646                         PE_mirror_particle(ob, psmd->dm, psys, pa, newpa);
2647
2648                         newpa++;
2649                         newpoint++;
2650                 }
2651         }
2652
2653         LOOP_POINTS {
2654                 point->flag &= ~PEP_TAG;
2655         }
2656
2657         MEM_freeN(mirrorfaces);
2658 }
2659
2660 static int mirror_exec(bContext *C, wmOperator *op)
2661 {
2662         Scene *scene= CTX_data_scene(C);
2663         Object *ob= CTX_data_active_object(C);
2664         PTCacheEdit *edit= PE_get_current(scene, ob);
2665         
2666         PE_mirror_x(scene, ob, 0);
2667
2668         update_world_cos(ob, edit);
2669         WM_event_add_notifier(C, NC_OBJECT|ND_PARTICLE_DATA, ob);
2670         DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
2671
2672         return OPERATOR_FINISHED;
2673 }
2674
2675 void PARTICLE_OT_mirror(wmOperatorType *ot)
2676 {
2677         /* identifiers */
2678         ot->name= "Mirror";
2679         ot->idname= "PARTICLE_OT_mirror";
2680         
2681         /* api callbacks */
2682         ot->exec= mirror_exec;
2683         ot->poll= PE_poll;
2684
2685         /* flags */
2686         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2687 }
2688
2689 /*********************** set brush operator **********************/
2690
2691 static EnumPropertyItem brush_type_items[]= {
2692         {PE_BRUSH_NONE, "NONE", 0, "None", ""},
2693         {PE_BRUSH_COMB, "COMB", 0, "Comb", ""},
2694         {PE_BRUSH_SMOOTH, "SMOOTH", 0, "Smooth", ""},
2695         {PE_BRUSH_ADD, "ADD", 0, "Add", ""},
2696         {PE_BRUSH_LENGTH, "LENGTH", 0, "Length", ""},
2697         {PE_BRUSH_PUFF, "PUFF", 0, "Puff", ""},
2698         {PE_BRUSH_CUT, "CUT", 0, "Cut", ""},
2699         {0, NULL, 0, NULL, NULL}
2700 };
2701
2702 static int set_brush_exec(bContext *C, wmOperator *op)
2703 {
2704         Scene *scene= CTX_data_scene(C);
2705         ParticleEditSettings *pset= PE_settings(scene);
2706
2707         pset->brushtype= RNA_enum_get(op->ptr, "type");
2708
2709         return OPERATOR_FINISHED;
2710 }
2711
2712 void PARTICLE_OT_brush_set(wmOperatorType *ot)
2713 {
2714         /* identifiers */
2715         ot->name= "Set Brush";
2716         ot->idname= "PARTICLE_OT_brush_set";
2717         
2718         /* api callbacks */
2719         ot->exec= set_brush_exec;
2720         ot->invoke= WM_menu_invoke;
2721         ot->poll= PE_poll;
2722
2723         /* properties */
2724         RNA_def_enum(ot->srna, "type", brush_type_items, PE_BRUSH_NONE, "Type", "Brush type to select for editing.");
2725 }
2726
2727
2728 /*********************** set mode operator **********************/
2729
2730 static EnumPropertyItem edit_type_items[]= {
2731         {PE_TYPE_PARTICLES, "PARTICLES", 0, "Particles", ""},
2732         {PE_TYPE_SOFTBODY, "SOFTBODY", 0, "Soft body", ""},
2733         {PE_TYPE_CLOTH, "CLOTH", 0, "Cloth", ""},
2734         {0, NULL, 0, NULL, NULL}
2735 };
2736
2737 static int set_edit_mode_exec(bContext *C, wmOperator *op)
2738 {
2739         Scene *scene= CTX_data_scene(C);
2740         ParticleEditSettings *pset= PE_settings(scene);
2741
2742         pset->edittype= RNA_enum_get(op->ptr, "type");
2743
2744         return OPERATOR_FINISHED;
2745 }
2746
2747 void PARTICLE_OT_edit_type_set(wmOperatorType *ot)
2748 {
2749         /* identifiers */
2750         ot->name= "Set Edit Type";
2751         ot->idname= "PARTICLE_OT_edit_type_set";
2752         
2753         /* api callbacks */
2754         ot->exec= set_edit_mode_exec;
2755         ot->invoke= WM_menu_invoke;
2756         ot->poll= PE_poll;
2757
2758         /* properties */
2759         RNA_def_enum(ot->srna, "type", edit_type_items, PE_TYPE_PARTICLES, "Type", "Edit type to select for editing.");
2760 }
2761
2762 /************************* brush edit callbacks ********************/
2763
2764 static void brush_comb(PEData *data, float mat[][4], float imat[][4], int point_index, int key_index, PTCacheEditKey *key)
2765 {
2766         ParticleEditSettings *pset= PE_settings(data->scene);
2767         float cvec[3], fac;
2768
2769         if(pset->flag & PE_LOCK_FIRST && key_index == 0) return;
2770
2771         fac= (float)pow((double)(1.0f - data->dist / data->rad), (double)data->combfac);
2772
2773         VECCOPY(cvec,data->dvec);
2774         mul_mat3_m4_v3(imat,cvec);
2775         mul_v3_fl(cvec, fac);
2776         VECADD(key->co, key->co, cvec);
2777
2778         (data->edit->points + point_index)->flag |= PEP_EDIT_RECALC;
2779 }
2780
2781 static void brush_cut(PEData *data, int pa_index)
2782 {
2783         PTCacheEdit *edit = data->edit;
2784         ARegion *ar= data->vc.ar;
2785         Object *ob= data->ob;
2786         ParticleEditSettings *pset= PE_settings(data->scene);
2787         ParticleCacheKey *key= edit->pathcache[pa_index];
2788         float rad2, cut_time= 1.0;
2789         float x0, x1, v0, v1, o0, o1, xo0, xo1, d, dv;
2790         int k, cut, keys= (int)pow(2.0, (double)pset->draw_step);
2791         short vertco[2];
2792
2793         /* blunt scissors */
2794         if(BLI_frand() > data->cutfac) return;
2795
2796         /* don't cut hidden */
2797         if(edit->points[pa_index].flag & PEP_HIDE)
2798                 return;
2799
2800         rad2= data->rad * data->rad;
2801
2802         cut=0;
2803
2804         project_short_noclip(ar, key->co, vertco);
2805         x0= (float)vertco[0];
2806         x1= (float)vertco[1];
2807
2808         o0= (float)data->mval[0];
2809         o1= (float)data->mval[1];
2810         
2811         xo0= x0 - o0;
2812         xo1= x1 - o1;
2813
2814         /* check if root is inside circle */
2815         if(xo0*xo0 + xo1*xo1 < rad2 && key_test_depth(data, key->co)) {
2816                 cut_time= -1.0f;
2817                 cut= 1;
2818         }
2819         else {
2820                 /* calculate path time closest to root that was inside the circle */
2821                 for(k=1, key++; k<=keys; k++, key++) {
2822                         project_short_noclip(ar, key->co, vertco);
2823
2824                         if(key_test_depth(data, key->co) == 0) {
2825                                 x0= (float)vertco[0];
2826                                 x1= (float)vertco[1];
2827
2828                                 xo0= x0 - o0;
2829                                 xo1= x1 - o1;
2830                                 continue;
2831                         }
2832
2833                         v0= (float)vertco[0] - x0;
2834                         v1= (float)vertco[1] - x1;
2835
2836                         dv= v0*v0 + v1*v1;
2837
2838                         d= (v0*xo1 - v1*xo0);
2839                         
2840                         d= dv * rad2 - d*d;
2841
2842                         if(d > 0.0f) {
2843                                 d= sqrt(d);
2844
2845                                 cut_time= -(v0*xo0 + v1*xo1 + d);
2846
2847                                 if(cut_time > 0.0f) {
2848                                         cut_time /= dv;
2849
2850                                         if(cut_time < 1.0f) {
2851                                                 cut_time += (float)(k-1);
2852                                                 cut_time /= (float)keys;
2853                                                 cut= 1;
2854                                                 break;
2855                                         }
2856                                 }
2857                         }
2858
2859                         x0= (float)vertco[0];
2860                         x1= (float)vertco[1];
2861
2862                         xo0= x0 - o0;
2863                         xo1= x1 - o1;
2864                 }
2865         }
2866
2867         if(cut) {
2868                 if(cut_time < 0.0f) {
2869                         edit->points[pa_index].flag |= PEP_TAG;
2870                 }
2871                 else {
2872                         rekey_particle_to_time(data->scene, ob, pa_index, cut_time);
2873                         edit->points[pa_index].flag |= PEP_EDIT_RECALC;
2874                 }
2875         }
2876 }
2877
2878 static void brush_length(PEData *data, int point_index)
2879 {
2880         PTCacheEdit *edit= data->edit;
2881         PTCacheEditPoint *point = edit->points + point_index;
2882         KEY_K;
2883         float dvec[3],pvec[3] = {0.0f, 0.0f, 0.0f};
2884
2885         LOOP_KEYS {
2886                 if(k==0) {
2887                         VECCOPY(pvec,key->co);
2888                 }
2889                 else {
2890                         VECSUB(dvec,key->co,pvec);
2891                         VECCOPY(pvec,key->co);
2892                         mul_v3_fl(dvec,data->growfac);
2893                         VECADD(key->co,(key-1)->co,dvec);
2894                 }
2895         }
2896
2897         point->flag |= PEP_EDIT_RECALC;
2898 }
2899
2900 static void brush_puff(PEData *data, int point_index)
2901 {
2902         PTCacheEdit *edit = data->edit;
2903         ParticleSystem *psys = edit->psys;
2904         PTCacheEditPoint *point = edit->points + point_index;
2905         KEY_K;
2906         float mat[4][4], imat[4][4];
2907         float lastco[3], rootco[3] = {0.0f, 0.0f, 0.0f}, co[3], nor[3], kco[3], dco[3], fac=0.0f, length=0.0f;
2908
2909         if(psys && !(psys->flag & PSYS_GLOBAL_HAIR)) {
2910                 psys_mat_hair_to_global(data->ob, data->dm, psys->part->from, psys->particles + point_index, mat);
2911                 invert_m4_m4(imat,mat);
2912         }
2913         else {
2914                 unit_m4(mat);
2915                 unit_m4(imat);
2916         }
2917
2918         LOOP_KEYS {
2919                 if(k==0) {
2920                         /* find root coordinate and normal on emitter */
2921                         VECCOPY(co, key->co);
2922                         mul_m4_v3(mat, co);
2923
2924                         point_index= BLI_kdtree_find_nearest(edit->emitter_field, co, NULL, NULL);
2925                         if(point_index == -1) return;
2926
2927                         VECCOPY(rootco, co);
2928                         copy_v3_v3(nor, &edit->emitter_cosnos[point_index*6+3]);
2929                         normalize_v3(nor);
2930                         length= 0.0f;
2931
2932                         fac= (float)pow((double)(1.0f - data->dist / data->rad), (double)data->pufffac);
2933                         fac *= 0.025f;
2934                         if(data->invert)
2935                                 fac= -fac;
2936                 }
2937                 else {
2938                         /* compute position as if hair was standing up straight */
2939                         VECCOPY(lastco, co);
2940                         VECCOPY(co, key->co);
2941                         mul_m4_v3(mat, co);
2942                         length += len_v3v3(lastco, co);
2943
2944                         VECADDFAC(kco, rootco, nor, length);
2945
2946                         /* blend between the current and straight position */
2947                         VECSUB(dco, kco, co);
2948                         VECADDFAC(co, co, dco, fac);
2949
2950                         VECCOPY(key->co, co);
2951                         mul_m4_v3(imat, key->co);
2952                 }
2953         }
2954
2955         point->flag |= PEP_EDIT_RECALC;
2956 }
2957
2958 static void brush_smooth_get(PEData *data, float mat[][4], float imat[][4], int point_index, int key_index, PTCacheEditKey *key)
2959 {       
2960         if(key_index) {
2961                 float dvec[3];
2962
2963                 sub_v3_v3v3(dvec,key->co,(key-1)->co);
2964                 mul_mat3_m4_v3(mat,dvec);
2965                 VECADD(data->vec,data->vec,dvec);
2966                 data->tot++;
2967         }
2968 }
2969
2970 static void brush_smooth_do(PEData *data, float mat[][4], float imat[][4], int point_index, int key_index, PTCacheEditKey *key)
2971 {
2972         float vec[3], dvec[3];
2973         
2974         if(key_index) {
2975                 VECCOPY(vec,data->vec);
2976                 mul_mat3_m4_v3(imat,vec);
2977
2978                 sub_v3_v3v3(dvec,key->co,(key-1)->co);
2979
2980                 VECSUB(dvec,vec,dvec);
2981                 mul_v3_fl(dvec,data->smoothfac);
2982                 
2983                 VECADD(key->co,key->co,dvec);
2984         }
2985
2986         (data->edit->points + point_index)->flag |= PEP_EDIT_RECALC;
2987 }
2988
2989 static int brush_add(PEData *data, short number)
2990 {
2991         Scene *scene= data->scene;
2992         Object *ob= data->ob;
2993         PTCacheEdit *edit = data->edit;
2994         ParticleSystem *psys= edit->psys;
2995         ParticleData *add_pars= MEM_callocN(number*sizeof(ParticleData),"ParticleData add");
2996         ParticleSystemModifierData *psmd= psys_get_modifier(ob,psys);
2997         ParticleSimulationData sim = {scene, ob, psys, psmd};
2998         ParticleEditSettings *pset= PE_settings(scene);
2999         int i, k, n= 0, totpart= psys->totpart;
3000         float mco[2];
3001         short dmx= 0, dmy= 0;
3002         float co1[3], co2[3], min_d, imat[4][4];
3003         float framestep, timestep= psys_get_timestep(&sim);
3004         short size= pset->brush[PE_BRUSH_ADD].size;
3005         short size2= size*size;
3006         DerivedMesh *dm=0;
3007         invert_m4_m4(imat,ob->obmat);
3008
3009         if(psys->flag & PSYS_GLOBAL_HAIR)
3010                 return 0;
3011
3012         BLI_srandom(psys->seed+data->mval[0]+data->mval[1]);
3013         
3014         /* painting onto the deformed mesh, could be an option? */
3015         if(psmd->dm->deformedOnly)
3016                 dm= psmd->dm;
3017         else
3018                 dm= mesh_get_derived_deform(scene, ob, CD_MASK_BAREMESH);
3019
3020         for(i=0; i<number; i++) {
3021                 if(number>1) {
3022                         dmx=dmy=size;
3023                         while(dmx*dmx+dmy*dmy>size2) {
3024                                 dmx=(short)((2.0f*BLI_frand()-1.0f)*size);
3025                                 dmy=(short)((2.0f*BLI_frand()-1.0f)*size);
3026                         }
3027                 }
3028
3029                 mco[0]= data->mval[0] + dmx;
3030                 mco[1]= data->mval[1] + dmy;
3031                 viewline(data->vc.ar, data->vc.v3d, mco, co1, co2);
3032
3033                 mul_m4_v3(imat,co1);
3034                 mul_m4_v3(imat,co2);
3035                 min_d=2.0;
3036                 
3037                 /* warning, returns the derived mesh face */
3038                 if(psys_intersect_dm(scene, ob,dm,0,co1,co2,&min_d,&add_pars[n].num,add_pars[n].fuv,0,0,0,0)) {
3039                         add_pars[n].num_dmcache= psys_particle_dm_face_lookup(ob,psmd->dm,add_pars[n].num,add_pars[n].fuv,NULL);
3040                         n++;
3041                 }
3042         }
3043         if(n) {
3044                 int newtotpart=totpart+n;
3045                 float hairmat[4][4], cur_co[3];
3046                 KDTree *tree=0;
3047                 ParticleData *pa, *new_pars= MEM_callocN(newtotpart*sizeof(ParticleData),"ParticleData new");
3048                 PTCacheEditPoint *point, *new_points= MEM_callocN(newtotpart*sizeof(PTCacheEditPoint),"PTCacheEditPoint array new");
3049                 PTCacheEditKey *key;
3050                 HairKey *hkey;
3051
3052                 /* save existing elements */
3053                 memcpy(new_pars, psys->particles, totpart * sizeof(ParticleData));
3054                 memcpy(new_points, edit->points, totpart * sizeof(PTCacheEditPoint));
3055
3056                 /* change old arrays to new ones */
3057                 if(psys->particles) MEM_freeN(psys->particles);
3058                 psys->particles= new_pars;
3059
3060                 if(edit->points) MEM_freeN(edit->points);
3061                 edit->points= new_points;
3062
3063                 if(edit->mirror_cache) {
3064                         MEM_freeN(edit->mirror_cache);
3065                         edit->mirror_cache= NULL;
3066                 }
3067
3068                 /* create tree for interpolation */
3069                 if(pset->flag & PE_INTERPOLATE_ADDED && psys->totpart) {
3070                         tree=BLI_kdtree_new(psys->totpart);
3071                         
3072                         for(i=0, pa=psys->particles; i<totpart; i++, pa++) {
3073                                 psys_particle_on_dm(psmd->dm,psys->part->from,pa->num,pa->num_dmcache,pa->fuv,pa->foffset,cur_co,0,0,0,0,0);
3074                                 BLI_kdtree_insert(tree, i, cur_co, NULL);
3075                         }
3076
3077                         BLI_kdtree_balance(tree);
3078                 }
3079
3080                 edit->totpoint= psys->totpart= newtotpart;
3081
3082                 /* create new elements */
3083                 pa= psys->particles + totpart;
3084                 point= edit->points + totpart;
3085
3086                 for(i=totpart; i<newtotpart; i++, pa++, point++) {
3087                         memcpy(pa, add_pars + i - totpart, sizeof(ParticleData));
3088                         pa->hair= MEM_callocN(pset->totaddkey * sizeof(HairKey), "BakeKey key add");
3089                         key= point->keys= MEM_callocN(pset->totaddkey * sizeof(PTCacheEditKey), "PTCacheEditKey add");
3090                         point->totkey= pa->totkey= pset->totaddkey;
3091
3092                         for(k=0, hkey=pa->hair; k<pa->totkey; k++, hkey++, key++) {
3093                                 key->co= hkey->co;
3094                                 key->time= &hkey->time;
3095
3096                                 if(!(psys->flag & PSYS_GLOBAL_HAIR))
3097                                         key->flag |= PEK_USE_WCO;
3098                         }
3099                         
3100                         pa->size= 1.0f;
3101                         initialize_particle(&sim, pa,i);
3102                         reset_particle(&sim, pa, 0.0, 1.0);
3103                         point->flag |= PEP_EDIT_RECALC;
3104                         if(pset->flag & PE_X_MIRROR)
3105                                 point->flag |= PEP_TAG; /* signal for duplicate */
3106                         
3107                         framestep= pa->lifetime/(float)(pset->totaddkey-1);
3108
3109                         if(tree) {
3110                                 HairKey *hkey;
3111                                 ParticleKey key[3];
3112                                 KDTreeNearest ptn[3];
3113                                 int w, maxw;
3114                                 float maxd, mind, dd, totw=0.0, weight[3];
3115
3116                                 psys_particle_on_dm(psmd->dm,psys->part->from,pa->num,pa->num_dmcache,pa->fuv,pa->foffset,co1,0,0,0,0,0);
3117                                 maxw= BLI_kdtree_find_n_nearest(tree,3,co1,NULL,ptn);
3118
3119                                 maxd= ptn[maxw-1].dist;
3120                                 mind= ptn[0].dist;
3121                                 dd= maxd - mind;
3122                                 
3123                                 for(w=0; w<maxw; w++) {
3124                                         weight[w]= (float)pow(2.0, (double)(-6.0f * ptn[w].dist / maxd));
3125                                         totw += weight[w];
3126                                 }
3127                                 for(;w<3; w++) {
3128                                         weight[w]= 0.0f;
3129                                 }
3130
3131                                 for(w=0; w<maxw; w++)
3132                                         weight[w] /= totw;
3133
3134                                 for(k=0; k<pset->totaddkey; k++) {
3135                                         hkey= (HairKey*)pa->hair + k;
3136                                         hkey->time= pa->time + k * framestep;
3137
3138                                         key[0].time= hkey->time/ 100.0f;
3139                                         psys_get_particle_on_path(&sim, ptn[0].index, key, 0);
3140                                         mul_v3_fl(key[0].co, weight[0]);
3141                                         
3142                                         if(maxw>1) {
3143                                                 key[1].time= key[0].time;
3144                                                 psys_get_particle_on_path(&sim, ptn[1].index, key + 1, 0);
3145                                                 mul_v3_fl(key[1].co, weight[1]);
3146                                                 VECADD(key[0].co, key[0].co, key[1].co);
3147
3148                                                 if(maxw>2) {                                            
3149                                                         key[2].time= key[0].time;
3150                                                         psys_get_particle_on_path(&sim, ptn[2].index, key + 2, 0);
3151                                                         mul_v3_fl(key[2].co, weight[2]);
3152                                                         VECADD(key[0].co, key[0].co, key[2].co);
3153                                                 }
3154                                         }
3155
3156                                         if(k==0)
3157                                                 VECSUB(co1, pa->state.co, key[0].co);
3158
3159                                         VECADD(hkey->co, key[0].co, co1);
3160
3161                                         hkey->time= key[0].time;
3162                                 }
3163                         }
3164                         else {
3165                                 for(k=0, hkey=pa->hair; k<pset->totaddkey; k++, hkey++) {
3166                                         VECADDFAC(hkey->co, pa->state.co, pa->state.vel, k * framestep * timestep);
3167                                         hkey->time += k * framestep;
3168                                 }
3169                         }
3170                         for(k=0, hkey=pa->hair; k<pset->totaddkey; k++, hkey++) {
3171                                 psys_mat_hair_to_global(ob, psmd->dm, psys->part->from, pa, hairmat);
3172                                 invert_m4_m4(imat,hairmat);
3173                                 mul_m4_v3(imat, hkey->co);
3174                         }
3175                 }
3176
3177                 if(tree)
3178                         BLI_kdtree_free(tree);
3179         }
3180         if(add_pars)
3181                 MEM_freeN(add_pars);
3182         
3183         if(!psmd->dm->deformedOnly)
3184                 dm->release(dm);