40aaee758b983d06c62fec5938a4bf588d5089f5
[blender-staging.git] / source / blender / editors / sculpt_paint / sculpt.c
1 /*
2  * $Id: sculptmode.c 18309 2009-01-04 07:47:11Z nicholasbishop $
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) 2006 by Nicholas Bishop
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  * Implements the Sculpt Mode tools
30  *
31  */
32
33 #include "MEM_guardedalloc.h"
34
35 #include "BLI_arithb.h"
36 #include "BLI_blenlib.h"
37 #include "BLI_dynstr.h"
38
39 #include "DNA_armature_types.h"
40 #include "DNA_brush_types.h"
41 #include "DNA_image_types.h"
42 #include "DNA_key_types.h"
43 #include "DNA_mesh_types.h"
44 #include "DNA_meshdata_types.h"
45 #include "DNA_modifier_types.h"
46 #include "DNA_object_types.h"
47 #include "DNA_screen_types.h"
48 #include "DNA_scene_types.h"
49 #include "DNA_texture_types.h"
50 #include "DNA_view3d_types.h"
51 #include "DNA_userdef_types.h"
52 #include "DNA_color_types.h"
53
54 #include "BKE_brush.h"
55 #include "BKE_context.h"
56 #include "BKE_customdata.h"
57 #include "BKE_DerivedMesh.h"
58 #include "BKE_depsgraph.h"
59 #include "BKE_global.h"
60 #include "BKE_image.h"
61 #include "BKE_key.h"
62 #include "BKE_library.h"
63 #include "BKE_main.h"
64 #include "BKE_mesh.h"
65 #include "BKE_modifier.h"
66 #include "BKE_multires.h"
67 #include "BKE_sculpt.h"
68 #include "BKE_texture.h"
69 #include "BKE_utildefines.h"
70 #include "BKE_colortools.h"
71
72 #include "BIF_gl.h"
73 #include "BIF_glutil.h"
74
75 #include "WM_api.h"
76 #include "WM_types.h"
77 #include "ED_screen.h"
78 #include "ED_sculpt.h"
79 #include "ED_space_api.h"
80 #include "ED_util.h"
81 #include "ED_view3d.h"
82 #include "sculpt_intern.h"
83
84 #include "RNA_access.h"
85 #include "RNA_define.h"
86
87 #include "IMB_imbuf_types.h"
88
89 #include "RE_render_ext.h"
90 #include "RE_shader_ext.h" /*for multitex_ext*/
91
92 #include "GPU_draw.h"
93
94 #include <math.h>
95 #include <stdlib.h>
96 #include <string.h>
97
98 /* Number of vertices to average in order to determine the flatten distance */
99 #define FLATTEN_SAMPLE_SIZE 10
100
101 /* ===== STRUCTS =====
102  *
103  */
104
105 /* ActiveData stores an Index into the mvert array of Mesh, plus Fade, which
106    stores how far the vertex is from the brush center, scaled to the range [0,1]. */
107 typedef struct ActiveData {
108         struct ActiveData *next, *prev;
109         unsigned int Index;
110         float Fade;
111         float dist;
112 } ActiveData;
113
114 typedef enum StrokeFlags {
115         CLIP_X = 1,
116         CLIP_Y = 2,
117         CLIP_Z = 4
118 } StrokeFlags;
119
120 /* Cache stroke properties. Used because
121    RNA property lookup isn't particularly fast.
122
123    For descriptions of these settings, check the operator properties.
124 */
125 typedef struct StrokeCache {
126         /* Invariants */
127         float radius;
128         float scale[3];
129         int flag;
130         float clip_tolerance[3];
131         int initial_mouse[2];
132         float depth;
133
134         /* Variants */
135         float true_location[3];
136         float location[3];
137         float flip;
138         float pressure;
139         int mouse[2];
140
141         /* The rest is temporary storage that isn't saved as a property */
142
143         int first_time; /* Beginning of stroke may do some things special */
144
145         ViewContext vc;
146         bglMats *mats;
147
148         float *layer_disps; /* Displacements for each vertex */
149         float (*mesh_store)[3]; /* Copy of the mesh vertices' locations */
150         short (*orig_norms)[3]; /* Copy of the mesh vertices' normals */
151         float rotation; /* Texture rotation (radians) for anchored and rake modes */
152         int pixel_radius, previous_pixel_radius;
153         ListBase grab_active_verts[8]; /* The same list of verts is used throught grab stroke */
154         float grab_delta[3], grab_delta_symmetry[3];
155         float old_grab_location[3];
156         int symmetry; /* Symmetry index between 0 and 7 */
157         float view_normal[3], view_normal_symmetry[3];
158         int last_dot[2]; /* Last location of stroke application */
159         int last_rake[2]; /* Last location of updating rake rotation */
160 } StrokeCache;
161
162 typedef struct RectNode {
163         struct RectNode *next, *prev;
164         rcti r;
165 } RectNode;
166
167 /* Used to store to 2D screen coordinates of each vertex in the mesh. */
168 typedef struct ProjVert {
169         short co[2];
170         
171         /* Used to mark whether a vertex is inside a rough bounding box
172            containing the brush. */
173         char inside;
174 } ProjVert;
175
176 /* ===== OPENGL =====
177  *
178  * Simple functions to get data from the GL
179  */
180
181 /* Uses window coordinates (x,y) and depth component z to find a point in
182    modelspace */
183 static void unproject(bglMats *mats, float out[3], const short x, const short y, const float z)
184 {
185         double ux, uy, uz;
186
187         gluUnProject(x,y,z, mats->modelview, mats->projection,
188                      (GLint *)mats->viewport, &ux, &uy, &uz );
189         out[0] = ux;
190         out[1] = uy;
191         out[2] = uz;
192 }
193
194 /* Convert a point in model coordinates to 2D screen coordinates. */
195 static void projectf(bglMats *mats, const float v[3], float p[2])
196 {
197         double ux, uy, uz;
198
199         gluProject(v[0],v[1],v[2], mats->modelview, mats->projection,
200                    (GLint *)mats->viewport, &ux, &uy, &uz);
201         p[0]= ux;
202         p[1]= uy;
203 }
204
205 static void project(bglMats *mats, const float v[3], short p[2])
206 {
207         float f[2];
208         projectf(mats, v, f);
209
210         p[0]= f[0];
211         p[1]= f[1];
212 }
213
214 /* ===== Sculpting =====
215  *
216  */
217
218 /* Return modified brush size. Uses current tablet pressure (if available) to
219    shrink the brush. Skipped for grab brush because only the first mouse down
220    size is used, which is small if the user has just touched the pen to the
221    tablet */
222 static char brush_size(Sculpt *sd)
223 {
224         float size= sd->brush->size;
225         
226         if((sd->brush->sculpt_tool != SCULPT_TOOL_GRAB) && (sd->brush->flag & BRUSH_SIZE_PRESSURE))
227                 size *= sd->session->cache->pressure;
228
229         return size;
230 }
231
232 /* Return modified brush strength. Includes the direction of the brush, positive
233    values pull vertices, negative values push. Uses tablet pressure and a
234    special multiplier found experimentally to scale the strength factor. */
235 static float brush_strength(Sculpt *sd, StrokeCache *cache)
236 {
237         float dir= sd->brush->flag & BRUSH_DIR_IN ? -1 : 1;
238         float pressure= 1;
239         float flip= cache->flip ? -1:1;
240         float anchored = sd->brush->flag & BRUSH_ANCHORED ? 25 : 1;
241
242         if(sd->brush->flag & BRUSH_ALPHA_PRESSURE)
243                 pressure *= cache->pressure;
244         
245         switch(sd->brush->sculpt_tool){
246         case SCULPT_TOOL_DRAW:
247         case SCULPT_TOOL_LAYER:
248                 return sd->brush->alpha / 50.0f * dir * pressure * flip * anchored; /*XXX: not sure why? multiplied by G.vd->grid */;
249         case SCULPT_TOOL_SMOOTH:
250                 return sd->brush->alpha / .5 * pressure * anchored;
251         case SCULPT_TOOL_PINCH:
252                 return sd->brush->alpha / 10.0f * dir * pressure * flip * anchored;
253         case SCULPT_TOOL_GRAB:
254                 return 1;
255         case SCULPT_TOOL_INFLATE:
256                 return sd->brush->alpha / 50.0f * dir * pressure * flip * anchored;
257         case SCULPT_TOOL_FLATTEN:
258                 return sd->brush->alpha / 5.0f * pressure * anchored;
259         default:
260                 return 0;
261         }
262 }
263
264 /* For clipping against a mirror modifier */
265 static void sculpt_clip(StrokeCache *cache, float *co, const float val[3])
266 {
267         int i;
268         for(i=0; i<3; ++i) {
269                 if((cache->flag & (CLIP_X << i)) && (fabs(co[i]) <= cache->clip_tolerance[i]))
270                         co[i]= 0.0f;
271                 else
272                         co[i]= val[i];
273         }               
274 }
275
276 static void sculpt_axislock(Sculpt *sd, float *co)
277 {
278         if(sd->flags == (SCULPT_LOCK_X|SCULPT_LOCK_Y|SCULPT_LOCK_Z))
279                 return;
280
281         if(sd->session->cache->vc.v3d->twmode == V3D_MANIP_LOCAL) {
282                 float mat[3][3], imat[3][3];
283                 Mat3CpyMat4(mat, sd->session->cache->vc.obact->obmat);
284                 Mat3Inv(imat, mat);
285                 Mat3MulVecfl(mat, co);
286                 if (sd->flags & SCULPT_LOCK_X) co[0] = 0.0;
287                 if (sd->flags & SCULPT_LOCK_Y) co[1] = 0.0;
288                 if (sd->flags & SCULPT_LOCK_Z) co[2] = 0.0;             
289                 Mat3MulVecfl(imat, co);
290         } else {
291                 if (sd->flags & SCULPT_LOCK_X) co[0] = 0.0;
292                 if (sd->flags & SCULPT_LOCK_Y) co[1] = 0.0;
293                 if (sd->flags & SCULPT_LOCK_Z) co[2] = 0.0;             
294         }
295 }
296
297 static void add_norm_if(float view_vec[3], float out[3], float out_flip[3], const short no[3])
298 {
299         float fno[3] = {no[0], no[1], no[2]};
300
301         Normalize(fno);
302
303         if((Inpf(view_vec, fno)) > 0) {
304                 VecAddf(out, out, fno);
305         } else {
306                 VecAddf(out_flip, out_flip, fno); /* out_flip is used when out is {0,0,0} */
307         }
308 }
309
310 /* Currently only for the draw brush; finds average normal for all active
311    vertices */
312 static void calc_area_normal(Sculpt *sd, float out[3], const ListBase* active_verts)
313 {
314         StrokeCache *cache = sd->session->cache;
315         ActiveData *node = active_verts->first;
316         const int view = 0; /* XXX: should probably be a flag, not number: sd->brush_type==SCULPT_TOOL_DRAW ? sculptmode_brush()->view : 0; */
317         float out_flip[3];
318         float *out_dir = cache->view_normal_symmetry;
319         
320         out[0]=out[1]=out[2] = out_flip[0]=out_flip[1]=out_flip[2] = 0;
321
322         if(sd->brush->flag & BRUSH_ANCHORED) {
323                 for(; node; node = node->next)
324                         add_norm_if(out_dir, out, out_flip, cache->orig_norms[node->Index]);
325         }
326         else {
327                 for(; node; node = node->next)
328                         add_norm_if(out_dir, out, out_flip, sd->session->mvert[node->Index].no);
329         }
330
331         if (out[0]==0.0 && out[1]==0.0 && out[2]==0.0) {
332                 VECCOPY(out, out_flip);
333         }
334         
335         Normalize(out);
336
337         if(out_dir) {
338                 out[0] = out_dir[0] * view + out[0] * (10-view);
339                 out[1] = out_dir[1] * view + out[1] * (10-view);
340                 out[2] = out_dir[2] * view + out[2] * (10-view);
341         }
342         
343         Normalize(out);
344 }
345
346 static void do_draw_brush(Sculpt *sd, SculptSession *ss, const ListBase* active_verts)
347 {
348         float area_normal[3];
349         ActiveData *node= active_verts->first;
350
351         calc_area_normal(sd, area_normal, active_verts);
352         
353         sculpt_axislock(sd, area_normal);
354         
355         while(node){
356                 float *co= ss->mvert[node->Index].co;
357                 
358                 const float val[3]= {co[0]+area_normal[0]*node->Fade*ss->cache->scale[0],
359                                      co[1]+area_normal[1]*node->Fade*ss->cache->scale[1],
360                                      co[2]+area_normal[2]*node->Fade*ss->cache->scale[2]};
361                                      
362                 sculpt_clip(ss->cache, co, val);
363                 
364                 node= node->next;
365         }
366 }
367
368 /* For the smooth brush, uses the neighboring vertices around vert to calculate
369    a smoothed location for vert. Skips corner vertices (used by only one
370    polygon.) */
371 static void neighbor_average(SculptSession *ss, float avg[3], const int vert)
372 {
373         int i, skip= -1, total=0;
374         IndexNode *node= ss->fmap[vert].first;
375         char ncount= BLI_countlist(&ss->fmap[vert]);
376         MFace *f;
377
378         avg[0] = avg[1] = avg[2] = 0;
379                 
380         /* Don't modify corner vertices */
381         if(ncount==1) {
382                 VecCopyf(avg, ss->mvert[vert].co);
383                 return;
384         }
385
386         while(node){
387                 f= &ss->mface[node->index];
388                 
389                 if(f->v4) {
390                         skip= (f->v1==vert?2:
391                                f->v2==vert?3:
392                                f->v3==vert?0:
393                                f->v4==vert?1:-1);
394                 }
395
396                 for(i=0; i<(f->v4?4:3); ++i) {
397                         if(i != skip && (ncount!=2 || BLI_countlist(&ss->fmap[(&f->v1)[i]]) <= 2)) {
398                                 VecAddf(avg, avg, ss->mvert[(&f->v1)[i]].co);
399                                 ++total;
400                         }
401                 }
402
403                 node= node->next;
404         }
405
406         if(total>0)
407                 VecMulf(avg, 1.0f / total);
408         else
409                 VecCopyf(avg, ss->mvert[vert].co);
410 }
411
412 static void do_smooth_brush(SculptSession *ss, const ListBase* active_verts)
413 {
414         ActiveData *node= active_verts->first;
415
416         while(node){
417                 float *co= ss->mvert[node->Index].co;
418                 float avg[3], val[3];
419
420                 neighbor_average(ss, avg, node->Index);
421                 val[0] = co[0]+(avg[0]-co[0])*node->Fade;
422                 val[1] = co[1]+(avg[1]-co[1])*node->Fade;
423                 val[2] = co[2]+(avg[2]-co[2])*node->Fade;
424
425                 sculpt_clip(ss->cache, co, val);
426                 node= node->next;
427         }
428 }
429
430 static void do_pinch_brush(SculptSession *ss, const ListBase* active_verts)
431 {
432         ActiveData *node= active_verts->first;
433
434         while(node) {
435                 float *co= ss->mvert[node->Index].co;
436                 const float val[3]= {co[0]+(ss->cache->location[0]-co[0])*node->Fade,
437                                      co[1]+(ss->cache->location[1]-co[1])*node->Fade,
438                                      co[2]+(ss->cache->location[2]-co[2])*node->Fade};
439                 sculpt_clip(ss->cache, co, val);
440                 node= node->next;
441         }
442 }
443
444 static void do_grab_brush(Sculpt *sd, SculptSession *ss)
445 {
446         ActiveData *node= ss->cache->grab_active_verts[ss->cache->symmetry].first;
447         float add[3];
448         float grab_delta[3];
449         
450         VecCopyf(grab_delta, ss->cache->grab_delta_symmetry);
451         sculpt_axislock(sd, grab_delta);
452         
453         while(node) {
454                 float *co= ss->mvert[node->Index].co;
455                 
456                 VecCopyf(add, grab_delta);
457                 VecMulf(add, node->Fade);
458                 VecAddf(add, add, co);
459                 sculpt_clip(ss->cache, co, add);
460
461                 node= node->next;
462         }
463         
464 }
465
466 static void do_layer_brush(Sculpt *sd, SculptSession *ss, const ListBase *active_verts)
467 {
468         float area_normal[3];
469         ActiveData *node= active_verts->first;
470         const float bstr= brush_strength(sd, ss->cache);
471
472         calc_area_normal(sd, area_normal, active_verts);
473
474         while(node){
475                 float *disp= &ss->cache->layer_disps[node->Index];
476                 
477                 if((bstr > 0 && *disp < bstr) ||
478                   (bstr < 0 && *disp > bstr)) {
479                         float *co= ss->mvert[node->Index].co;
480                         
481                         *disp+= node->Fade;
482
483                         if(bstr < 0) {
484                                 if(*disp < bstr)
485                                         *disp = bstr;
486                         } else {
487                                 if(*disp > bstr)
488                                         *disp = bstr;
489                         }
490
491                         {
492                                 const float val[3]= {ss->cache->mesh_store[node->Index][0]+area_normal[0] * *disp*ss->cache->scale[0],
493                                                      ss->cache->mesh_store[node->Index][1]+area_normal[1] * *disp*ss->cache->scale[1],
494                                                      ss->cache->mesh_store[node->Index][2]+area_normal[2] * *disp*ss->cache->scale[2]};
495                                 sculpt_clip(ss->cache, co, val);
496                         }
497                 }
498
499                 node= node->next;
500         }
501 }
502
503 static void do_inflate_brush(SculptSession *ss, const ListBase *active_verts)
504 {
505         ActiveData *node= active_verts->first;
506         float add[3];
507         
508         while(node) {
509                 float *co= ss->mvert[node->Index].co;
510                 short *no= ss->mvert[node->Index].no;
511
512                 add[0]= no[0]/ 32767.0f;
513                 add[1]= no[1]/ 32767.0f;
514                 add[2]= no[2]/ 32767.0f;
515                 VecMulf(add, node->Fade);
516                 add[0]*= ss->cache->scale[0];
517                 add[1]*= ss->cache->scale[1];
518                 add[2]*= ss->cache->scale[2];
519                 VecAddf(add, add, co);
520                 
521                 sculpt_clip(ss->cache, co, add);
522
523                 node= node->next;
524         }
525 }
526
527 static void calc_flatten_center(SculptSession *ss, ActiveData *node, float co[3])
528 {
529         ActiveData *outer[FLATTEN_SAMPLE_SIZE];
530         int i;
531         
532         for(i = 0; i < FLATTEN_SAMPLE_SIZE; ++i)
533                 outer[i] = node;
534                 
535         for(; node; node = node->next) {
536                 for(i = 0; i < FLATTEN_SAMPLE_SIZE; ++i) {
537                         if(node->dist > outer[i]->dist) {
538                                 outer[i] = node;
539                                 break;
540                         }
541                 }
542         }
543         
544         co[0] = co[1] = co[2] = 0.0f;
545         for(i = 0; i < FLATTEN_SAMPLE_SIZE; ++i)
546                 VecAddf(co, co, ss->mvert[outer[i]->Index].co);
547         VecMulf(co, 1.0f / FLATTEN_SAMPLE_SIZE);
548 }
549
550 static void do_flatten_brush(Sculpt *sd, SculptSession *ss, const ListBase *active_verts)
551 {
552         ActiveData *node= active_verts->first;
553         /* area_normal and cntr define the plane towards which vertices are squashed */
554         float area_normal[3];
555         float cntr[3];
556
557         calc_area_normal(sd, area_normal, active_verts);
558         calc_flatten_center(ss, node, cntr);
559
560         while(node){
561                 float *co= ss->mvert[node->Index].co;
562                 float p1[3], sub1[3], sub2[3], intr[3], val[3];
563                 
564                 /* Find the intersection between squash-plane and vertex (along the area normal) */
565                 VecSubf(p1, co, area_normal);
566                 VecSubf(sub1, cntr, p1);
567                 VecSubf(sub2, co, p1);
568                 VecSubf(intr, co, p1);
569                 VecMulf(intr, Inpf(area_normal, sub1) / Inpf(area_normal, sub2));
570                 VecAddf(intr, intr, p1);
571                 
572                 VecSubf(val, intr, co);
573                 VecMulf(val, node->Fade);
574                 VecAddf(val, val, co);
575                 
576                 sculpt_clip(ss->cache, co, val);
577                 
578                 node= node->next;
579         }
580 }
581
582
583 /* Uses symm to selectively flip any axis of a coordinate. */
584 static void flip_coord(float out[3], float in[3], const char symm)
585 {
586         if(symm & SCULPT_SYMM_X)
587                 out[0]= -in[0];
588         else
589                 out[0]= in[0];
590         if(symm & SCULPT_SYMM_Y)
591                 out[1]= -in[1];
592         else
593                 out[1]= in[1];
594         if(symm & SCULPT_SYMM_Z)
595                 out[2]= -in[2];
596         else
597                 out[2]= in[2];
598 }
599
600 /* Get a pixel from the texcache at (px, py) */
601 static unsigned char get_texcache_pixel(const SculptSession *ss, int px, int py)
602 {
603         unsigned *p;
604         p = ss->texcache + py * ss->texcache_side + px;
605         return ((unsigned char*)(p))[0];
606 }
607
608 static float get_texcache_pixel_bilinear(const SculptSession *ss, float u, float v)
609 {
610         int x, y, x2, y2;
611         const int tc_max = ss->texcache_side - 1;
612         float urat, vrat, uopp;
613
614         if(u < 0) u = 0;
615         else if(u >= ss->texcache_side) u = tc_max;
616         if(v < 0) v = 0;
617         else if(v >= ss->texcache_side) v = tc_max;
618
619         x = floor(u);
620         y = floor(v);
621         x2 = x + 1;
622         y2 = y + 1;
623
624         if(x2 > ss->texcache_side) x2 = tc_max;
625         if(y2 > ss->texcache_side) y2 = tc_max;
626         
627         urat = u - x;
628         vrat = v - y;
629         uopp = 1 - urat;
630                 
631         return ((get_texcache_pixel(ss, x, y) * uopp +
632                  get_texcache_pixel(ss, x2, y) * urat) * (1 - vrat) + 
633                 (get_texcache_pixel(ss, x, y2) * uopp +
634                  get_texcache_pixel(ss, x2, y2) * urat) * vrat) / 255.0;
635 }
636
637 /* Return a multiplier for brush strength on a particular vertex. */
638 static float tex_strength(Sculpt *sd, float *point, const float len)
639 {
640         SculptSession *ss= sd->session;
641         Brush *br = sd->brush;
642         float avg= 1;
643
644         if(br->texact==-1 || !br->mtex[br->texact])
645                 avg= 1;
646         else if(br->tex_mode==BRUSH_TEX_3D) {
647                 /* Get strength by feeding the vertex location directly
648                    into a texture */
649                 float jnk;
650                 const float factor= 0.01;
651                 MTex mtex;
652                 memset(&mtex,0,sizeof(MTex));
653                 mtex.tex= br->mtex[br->texact]->tex;
654                 mtex.projx= 1;
655                 mtex.projy= 2;
656                 mtex.projz= 3;
657                 VecCopyf(mtex.size, br->mtex[br->texact]->size);
658                 VecMulf(mtex.size, factor);
659                 if(!sd->texsep)
660                         mtex.size[1]= mtex.size[2]= mtex.size[0];
661                 
662                 externtex(&mtex,point,&avg,&jnk,&jnk,&jnk,&jnk);
663         }
664         else if(ss->texcache) {
665                 const float bsize= ss->cache->pixel_radius * 2;
666                 const float rot= sd->brush->rot + ss->cache->rotation;
667                 int px, py;
668                 float flip[3], point_2d[2];
669
670                 /* If the active area is being applied for symmetry, flip it
671                    across the symmetry axis in order to project it. This insures
672                    that the brush texture will be oriented correctly. */
673                 VecCopyf(flip, point);
674                 flip_coord(flip, flip, ss->cache->symmetry);
675                 projectf(ss->cache->mats, flip, point_2d);
676
677                 /* For Tile and Drag modes, get the 2D screen coordinates of the
678                    and scale them up or down to the texture size. */
679                 if(br->tex_mode==BRUSH_TEX_TILE) {
680                         const int sx= (const int)br->mtex[br->texact]->size[0];
681                         const int sy= (const int)sd->texsep ? br->mtex[br->texact]->size[1] : sx;
682                         
683                         float fx= point_2d[0];
684                         float fy= point_2d[1];
685                         
686                         float angle= atan2(fy, fx) - rot;
687                         float flen= sqrtf(fx*fx + fy*fy);
688                         
689                         if(rot<0.001 && rot>-0.001) {
690                                 px= point_2d[0];
691                                 py= point_2d[1];
692                         } else {
693                                 px= flen * cos(angle) + 2000;
694                                 py= flen * sin(angle) + 2000;
695                         }
696                         if(sx != 1)
697                                 px %= sx-1;
698                         if(sy != 1)
699                                 py %= sy-1;
700                         avg= get_texcache_pixel_bilinear(ss, ss->texcache_side*px/sx, ss->texcache_side*py/sy);
701                 } else {
702                         float fx= (point_2d[0] - ss->cache->mouse[0]) / bsize;
703                         float fy= (point_2d[1] - ss->cache->mouse[1]) / bsize;
704
705                         float angle= atan2(fy, fx) - rot;
706                         float flen= sqrtf(fx*fx + fy*fy);
707                         
708                         fx = flen * cos(angle) + 0.5;
709                         fy = flen * sin(angle) + 0.5;
710
711                         avg= get_texcache_pixel_bilinear(ss, fx * ss->texcache_side, fy * ss->texcache_side);
712                 }
713         }
714
715         avg*= brush_curve_strength(sd->brush, len, ss->cache->radius); /* Falloff curve */
716
717         return avg;
718 }
719
720 /* Mark area around the brush as damaged. projverts are marked if they are
721    inside the area and the damaged rectangle in 2D screen coordinates is 
722    added to damaged_rects. */
723 static void sculpt_add_damaged_rect(SculptSession *ss)
724 {
725         short p[2];
726         RectNode *rn= MEM_mallocN(sizeof(RectNode),"RectNode");
727         const float radius = MAX2(ss->cache->pixel_radius, ss->cache->previous_pixel_radius);
728         unsigned i;
729
730         /* Find center */
731         project(ss->cache->mats, ss->cache->location, p);
732         rn->r.xmin= p[0] - radius;
733         rn->r.ymin= p[1] - radius;
734         rn->r.xmax= p[0] + radius;
735         rn->r.ymax= p[1] + radius;
736
737         BLI_addtail(&ss->damaged_rects, rn);
738
739         /* Update insides */
740         for(i=0; i<ss->totvert; ++i) {
741                 if(!ss->projverts[i].inside) {
742                         if(ss->projverts[i].co[0] > rn->r.xmin && ss->projverts[i].co[1] > rn->r.ymin &&
743                            ss->projverts[i].co[0] < rn->r.xmax && ss->projverts[i].co[1] < rn->r.ymax) {
744                                 ss->projverts[i].inside= 1;
745                         }
746                 }
747                 // XXX: remember to fix this!
748                 // temporary pass
749                 ss->projverts[i].inside = 1;
750         }
751 }
752
753 /* Clears the depth buffer in each modified area. */
754 #if 0
755 static void sculpt_clear_damaged_areas(SculptSession *ss)
756 {
757         RectNode *rn= NULL;
758
759         for(rn = ss->damaged_rects.first; rn; rn = rn->next) {
760                 rcti clp = rn->r;
761                 rcti *win = NULL; /*XXX: &curarea->winrct; */
762                 
763                 clp.xmin += win->xmin;
764                 clp.xmax += win->xmin;
765                 clp.ymin += win->ymin;
766                 clp.ymax += win->ymin;
767                 
768                 if(clp.xmin < win->xmax && clp.xmax > win->xmin &&
769                    clp.ymin < win->ymax && clp.ymax > win->ymin) {
770                         if(clp.xmin < win->xmin) clp.xmin = win->xmin;
771                         if(clp.ymin < win->ymin) clp.ymin = win->ymin;
772                         if(clp.xmax > win->xmax) clp.xmax = win->xmax;
773                         if(clp.ymax > win->ymax) clp.ymax = win->ymax;
774
775                         glScissor(clp.xmin + 1, clp.ymin + 1,
776                                   clp.xmax - clp.xmin - 2,
777                                   clp.ymax - clp.ymin - 2);
778                 }
779                 
780                 glClear(GL_DEPTH_BUFFER_BIT);
781         }
782 }
783 #endif
784 static void do_brush_action(Sculpt *sd, StrokeCache *cache)
785 {
786         SculptSession *ss = sd->session;
787         float av_dist;
788         ListBase active_verts={0,0};
789         ListBase *grab_active_verts = &ss->cache->grab_active_verts[ss->cache->symmetry];
790         ActiveData *adata= 0;
791         float *vert;
792         Mesh *me= NULL; /*XXX: get_mesh(OBACT); */
793         const float bstrength= brush_strength(sd, cache);
794         KeyBlock *keyblock= NULL; /*XXX: ob_get_keyblock(OBACT); */
795         Brush *b = sd->brush;
796         int i;
797
798         sculpt_add_damaged_rect(ss);
799
800         /* Build a list of all vertices that are potentially within the brush's
801            area of influence. Only do this once for the grab brush. */
802         if((b->sculpt_tool != SCULPT_TOOL_GRAB) || cache->first_time) {
803                 for(i=0; i<ss->totvert; ++i) {
804                         /* Projverts.inside provides a rough bounding box */
805                         if(ss->multires || ss->projverts[i].inside) {
806                                 //vert= ss->vertexcosnos ? &ss->vertexcosnos[i*6] : a->verts[i].co;
807                                 vert= ss->mvert[i].co;
808                                 av_dist= VecLenf(ss->cache->location, vert);
809                                 if(av_dist < cache->radius) {
810                                         adata= (ActiveData*)MEM_mallocN(sizeof(ActiveData), "ActiveData");
811
812                                         adata->Index = i;
813                                         /* Fade is used to store the final strength at which the brush
814                                            should modify a particular vertex. */
815                                         adata->Fade= tex_strength(sd, vert, av_dist) * bstrength;
816                                         adata->dist = av_dist;
817
818                                         if(b->sculpt_tool == SCULPT_TOOL_GRAB && cache->first_time)
819                                                 BLI_addtail(grab_active_verts, adata);
820                                         else
821                                                 BLI_addtail(&active_verts, adata);
822                                 }
823                         }
824                 }
825         }
826
827         /* Only act if some verts are inside the brush area */
828         if(active_verts.first || (b->sculpt_tool == SCULPT_TOOL_GRAB && grab_active_verts->first)) {
829                 /* Apply one type of brush action */
830                 switch(b->sculpt_tool){
831                 case SCULPT_TOOL_DRAW:
832                         do_draw_brush(sd, ss, &active_verts);
833                         break;
834                 case SCULPT_TOOL_SMOOTH:
835                         do_smooth_brush(ss, &active_verts);
836                         break;
837                 case SCULPT_TOOL_PINCH:
838                         do_pinch_brush(ss, &active_verts);
839                         break;
840                 case SCULPT_TOOL_INFLATE:
841                         do_inflate_brush(ss, &active_verts);
842                         break;
843                 case SCULPT_TOOL_GRAB:
844                         do_grab_brush(sd, ss);
845                         break;
846                 case SCULPT_TOOL_LAYER:
847                         do_layer_brush(sd, ss, &active_verts);
848                         break;
849                 case SCULPT_TOOL_FLATTEN:
850                         do_flatten_brush(sd, ss, &active_verts);
851                         break;
852                 }
853         
854                 /* Copy the modified vertices from mesh to the active key */
855                 if(keyblock && !ss->multires) {
856                         float *co= keyblock->data;
857                         if(co) {
858                                 if(b->sculpt_tool == SCULPT_TOOL_GRAB)
859                                         adata = grab_active_verts->first;
860                                 else
861                                         adata = active_verts.first;
862
863                                 for(; adata; adata= adata->next)
864                                         if(adata->Index < keyblock->totelem)
865                                                 VecCopyf(&co[adata->Index*3], me->mvert[adata->Index].co);
866                         }
867                 }
868
869                 if(ss->vertexcosnos && !ss->multires)
870                         BLI_freelistN(&active_verts);
871                 else {
872                         if(b->sculpt_tool != SCULPT_TOOL_GRAB)
873                                 addlisttolist(&ss->damaged_verts, &active_verts);
874                 }
875         }
876 }
877
878 /* Flip all the editdata across the axis/axes specified by symm. Used to
879    calculate multiple modifications to the mesh when symmetry is enabled. */
880 static void calc_brushdata_symm(StrokeCache *cache, const char symm)
881 {
882         flip_coord(cache->location, cache->true_location, symm);
883         flip_coord(cache->view_normal_symmetry, cache->view_normal, symm);
884         flip_coord(cache->grab_delta_symmetry, cache->grab_delta, symm);
885         cache->symmetry= symm;
886 }
887
888 static void do_symmetrical_brush_actions(Sculpt *sd, StrokeCache *cache)
889 {
890         const char symm = sd->flags & 7;
891         int i;
892
893         /* Brush spacing: only apply dot if next dot is far enough away */
894         if((sd->brush->flag & BRUSH_SPACE) && !(sd->brush->flag & BRUSH_ANCHORED) && !cache->first_time) {
895                 int dx = cache->last_dot[0] - cache->mouse[0];
896                 int dy = cache->last_dot[1] - cache->mouse[1];
897                 if(sqrt(dx*dx+dy*dy) < sd->brush->spacing)
898                         return;
899         }
900         memcpy(cache->last_dot, cache->mouse, sizeof(int) * 2);
901
902         VecCopyf(cache->location, cache->true_location);
903         VecCopyf(cache->grab_delta_symmetry, cache->grab_delta);
904         cache->symmetry = 0;
905         do_brush_action(sd, cache);
906
907         for(i = 1; i <= symm; ++i) {
908                 if(symm & i && (symm != 5 || i != 3) && (symm != 6 || (i != 3 && i != 5))) {
909                         calc_brushdata_symm(cache, i);
910                         do_brush_action(sd, cache);
911                 }
912         }
913
914         cache->first_time = 0;
915 }
916
917 static void add_face_normal(vec3f *norm, MVert *mvert, const MFace* face, float *fn)
918 {
919         vec3f c= {mvert[face->v1].co[0],mvert[face->v1].co[1],mvert[face->v1].co[2]};
920         vec3f b= {mvert[face->v2].co[0],mvert[face->v2].co[1],mvert[face->v2].co[2]};
921         vec3f a= {mvert[face->v3].co[0],mvert[face->v3].co[1],mvert[face->v3].co[2]};
922         vec3f s1, s2;
923         float final[3];
924
925         VecSubf(&s1.x,&a.x,&b.x);
926         VecSubf(&s2.x,&c.x,&b.x);
927
928         final[0] = s1.y * s2.z - s1.z * s2.y;
929         final[1] = s1.z * s2.x - s1.x * s2.z;
930         final[2] = s1.x * s2.y - s1.y * s2.x;
931
932         if(fn)
933                 VecCopyf(fn, final);
934
935         norm->x+= final[0];
936         norm->y+= final[1];
937         norm->z+= final[2];
938 }
939
940 static void update_damaged_vert(SculptSession *ss, ListBase *lb)
941 {
942         ActiveData *vert;
943        
944         for(vert= lb->first; vert; vert= vert->next) {
945                 vec3f norm= {0,0,0};            
946                 IndexNode *face= ss->fmap[vert->Index].first;
947
948                 while(face){
949                         float *fn = NULL;
950                         if(ss->face_normals)
951                                 fn = &ss->face_normals[face->index*3];
952                         add_face_normal(&norm, ss->mvert, &ss->mface[face->index], fn);
953                         face= face->next;
954                 }
955                 Normalize(&norm.x);
956                 
957                 ss->mvert[vert->Index].no[0]=norm.x*32767;
958                 ss->mvert[vert->Index].no[1]=norm.y*32767;
959                 ss->mvert[vert->Index].no[2]=norm.z*32767;
960         }
961 }
962
963 static void calc_damaged_verts(SculptSession *ss)
964 {
965         int i;
966         
967         for(i=0; i<8; ++i)
968                 update_damaged_vert(ss, &ss->cache->grab_active_verts[i]);
969         update_damaged_vert(ss, &ss->damaged_verts);
970         BLI_freelistN(&ss->damaged_verts);
971         ss->damaged_verts.first = ss->damaged_verts.last = NULL;
972 }
973
974 #if 0
975 static void projverts_clear_inside(SculptSession *ss)
976 {
977         int i;
978         for(i = 0; i < ss->totvert; ++i)
979                 ss->projverts[i].inside = 0;
980 }
981 #endif
982
983 static void sculpt_update_tex(Sculpt *sd)
984 {
985         SculptSession *ss= sd->session;
986
987         if(ss->texcache) {
988                 MEM_freeN(ss->texcache);
989                 ss->texcache= NULL;
990         }
991
992         /* Need to allocate a bigger buffer for bigger brush size */
993         ss->texcache_side = sd->brush->size * 2;
994         if(!ss->texcache || ss->texcache_side > ss->texcache_actual) {
995                 ss->texcache = brush_gen_texture_cache(sd->brush, sd->brush->size);
996                 ss->texcache_actual = ss->texcache_side;
997         }
998 }
999
1000 void sculptmode_selectbrush_menu(void)
1001 {
1002         /* XXX: I guess menus belong elsewhere too?
1003
1004         Sculpt *sd= sculpt_data();
1005         int val;
1006         
1007         pupmenu_set_active(sd->brush_type);
1008         
1009         val= pupmenu("Select Brush%t|Draw|Smooth|Pinch|Inflate|Grab|Layer|Flatten");
1010
1011         if(val>0) {
1012                 sd->brush_type= val;
1013
1014                 allqueue(REDRAWVIEW3D, 1);
1015                 allqueue(REDRAWBUTSEDIT, 1);
1016         }*/
1017 }
1018
1019 static void sculptmode_update_all_projverts(SculptSession *ss)
1020 {
1021         unsigned i;
1022
1023         if(!ss->projverts)
1024                 ss->projverts = MEM_mallocN(sizeof(ProjVert)*ss->totvert,"ProjVerts");
1025
1026         for(i=0; i<ss->totvert; ++i) {
1027                 project(ss->cache->mats, ss->vertexcosnos ? &ss->vertexcosnos[i * 6] : ss->mvert[i].co,
1028                         ss->projverts[i].co);
1029                 ss->projverts[i].inside= 0;
1030         }
1031 }
1032
1033 /* Checks whether full update mode (slower) needs to be used to work with modifiers */
1034 char sculpt_modifiers_active(Object *ob)
1035 {
1036         ModifierData *md;
1037         
1038         for(md= modifiers_getVirtualModifierList(ob); md; md= md->next) {
1039                 if(md->mode & eModifierMode_Realtime && md->type != eModifierType_Multires)
1040                         return 1;
1041         }
1042         
1043         return 0;
1044 }
1045
1046 /* Sculpt mode handles multires differently from regular meshes, but only if
1047    it's the last modifier on the stack and it is not on the first level */
1048 static struct MultiresModifierData *sculpt_multires_active(Object *ob)
1049 {
1050         ModifierData *md;
1051         
1052         for(md= modifiers_getVirtualModifierList(ob); md; md= md->next) {
1053                 if(md->type == eModifierType_Multires && !md->next) {
1054                         MultiresModifierData *mmd = (MultiresModifierData*)md;
1055                         if(mmd->lvl != 1)
1056                                 return mmd;
1057                 }
1058         }
1059
1060         return NULL;
1061 }
1062
1063 static void sculpt_update_mesh_elements(bContext *C)
1064 {
1065         SculptSession *ss = CTX_data_tool_settings(C)->sculpt->session;
1066         Object *ob = CTX_data_active_object(C);
1067
1068         if((ss->multires = sculpt_multires_active(ob))) {
1069                 DerivedMesh *dm = mesh_get_derived_final(CTX_data_scene(C), ob, CD_MASK_BAREMESH);
1070                 ss->totvert = dm->getNumVerts(dm);
1071                 ss->totface = dm->getNumFaces(dm);
1072                 ss->mvert = dm->getVertDataArray(dm, CD_MVERT);
1073                 ss->mface = dm->getFaceDataArray(dm, CD_MFACE);
1074                 ss->face_normals = dm->getFaceDataArray(dm, CD_NORMAL);
1075         }
1076         else {
1077                 Mesh *me = get_mesh(ob);
1078                 ss->totvert = me->totvert;
1079                 ss->totface = me->totface;
1080                 ss->mvert = me->mvert;
1081                 ss->mface = me->mface;
1082                 ss->face_normals = NULL;
1083         }
1084
1085         if(ss->totvert != ss->fmap_size) {
1086                 if(ss->fmap) MEM_freeN(ss->fmap);
1087                 if(ss->fmap_mem) MEM_freeN(ss->fmap_mem);
1088                 create_vert_face_map(&ss->fmap, &ss->fmap_mem, ss->mface, ss->totvert, ss->totface);
1089                 ss->fmap_size = ss->totvert;
1090         }
1091 }
1092
1093 /* XXX: lots of drawing code (partial redraw), has to go elsewhere */
1094 #if 0
1095 void sculptmode_draw_wires(SculptSession *ss, int only_damaged)
1096 {
1097         Mesh *me = get_mesh(OBACT);
1098         int i;
1099
1100         bglPolygonOffset(1.0);
1101         glDepthMask(0);
1102         BIF_ThemeColor((OBACT==OBACT)?TH_ACTIVE:TH_SELECT);
1103
1104         for(i=0; i<me->totedge; i++) {
1105                 MEdge *med= &me->medge[i];
1106
1107                 if((!only_damaged || (ss->projverts[med->v1].inside || ss->projverts[med->v2].inside)) &&
1108                    (med->flag & ME_EDGEDRAW)) {
1109                         glDrawElements(GL_LINES, 2, GL_UNSIGNED_INT, &med->v1);
1110                 }
1111         }
1112
1113         glDepthMask(1);
1114         bglPolygonOffset(0.0);
1115 }
1116
1117 void sculptmode_draw_mesh(int only_damaged) 
1118 {
1119         int i, j, dt, drawCurrentMat = 1, matnr= -1;
1120         SculptSession *ss = sculpt_session();
1121
1122         sculpt_update_mesh_elements(ss, OBACT);
1123
1124         persp(PERSP_VIEW);
1125         mymultmatrix(OBACT->obmat);
1126         glEnable(GL_DEPTH_TEST);
1127         glEnable(GL_LIGHTING);
1128         /* XXX: GPU_set_object_materials(G.scene, OBACT, 0, NULL); */
1129         glEnable(GL_CULL_FACE);
1130
1131         glShadeModel(GL_SMOOTH);
1132
1133         glVertexPointer(3, GL_FLOAT, sizeof(MVert), &cache->mvert[0].co);
1134         glNormalPointer(GL_SHORT, sizeof(MVert), &cache->mvert[0].no);
1135
1136         dt= MIN2(G.vd->drawtype, OBACT->dt);
1137         if(dt==OB_WIRE)
1138                 glColorMask(0,0,0,0);
1139
1140         for(i=0; i<ss->totface; ++i) {
1141                 MFace *f= &ss->mface[i];
1142                 char inside= 0;
1143                 int new_matnr= f->mat_nr + 1;
1144                 
1145                 if(new_matnr != matnr)
1146                         drawCurrentMat= GPU_enable_material(matnr = new_matnr, NULL);
1147                 
1148                 /* If only_damaged!=0, only draw faces that are partially
1149                    inside the area(s) modified by the brush */
1150                 if(only_damaged) {
1151                         for(j=0; j<(f->v4?4:3); ++j) {
1152                                 if(ss->projverts[*((&f->v1)+j)].inside) {
1153                                         inside= 1;
1154                                         break;
1155                                 }
1156                         }
1157                 }
1158                 else
1159                         inside= 1;
1160                         
1161                 if(inside && drawCurrentMat)
1162                         glDrawElements(f->v4?GL_QUADS:GL_TRIANGLES, f->v4?4:3, GL_UNSIGNED_INT, &f->v1);
1163         }
1164
1165         glDisable(GL_CULL_FACE);
1166         glDisable(GL_LIGHTING);
1167         glColorMask(1,1,1,1);
1168
1169         if(dt==OB_WIRE || (OBACT->dtx & OB_DRAWWIRE))
1170                 sculptmode_draw_wires(ss, only_damaged);
1171
1172         glDisable(GL_DEPTH_TEST);
1173 }
1174 #endif
1175
1176 static int sculpt_poll(bContext *C)
1177 {
1178         return G.f & G_SCULPTMODE && CTX_wm_area(C)->spacetype == SPACE_VIEW3D &&
1179                 CTX_wm_region(C)->regiontype == RGN_TYPE_WINDOW;
1180 }
1181
1182 /*** Sculpt Cursor ***/
1183 static void draw_paint_cursor(bContext *C, int x, int y, void *customdata)
1184 {
1185         Sculpt *sd= CTX_data_tool_settings(C)->sculpt;
1186         
1187         glTranslatef((float)x, (float)y, 0.0f);
1188         
1189         glColor4ub(255, 100, 100, 128);
1190         glEnable( GL_LINE_SMOOTH );
1191         glEnable(GL_BLEND);
1192         glutil_draw_lined_arc(0.0, M_PI*2.0, sd->brush->size, 40);
1193         glDisable(GL_BLEND);
1194         glDisable( GL_LINE_SMOOTH );
1195         
1196         glTranslatef((float)-x, (float)-y, 0.0f);
1197 }
1198
1199 static void toggle_paint_cursor(bContext *C)
1200 {
1201         Sculpt *s = CTX_data_scene(C)->toolsettings->sculpt;
1202
1203         if(s->session->cursor) {
1204                 WM_paint_cursor_end(CTX_wm_manager(C), s->session->cursor);
1205                 s->session->cursor = NULL;
1206         }
1207         else {
1208                 s->session->cursor =
1209                         WM_paint_cursor_activate(CTX_wm_manager(C), sculpt_poll, draw_paint_cursor, NULL);
1210         }
1211 }
1212
1213 static void sculpt_undo_push(bContext *C, Sculpt *sd)
1214 {
1215         switch(sd->brush->sculpt_tool) {
1216         case SCULPT_TOOL_DRAW:
1217                 ED_undo_push(C, "Draw Brush"); break;
1218         case SCULPT_TOOL_SMOOTH:
1219                 ED_undo_push(C, "Smooth Brush"); break;
1220         case SCULPT_TOOL_PINCH:
1221                 ED_undo_push(C, "Pinch Brush"); break;
1222         case SCULPT_TOOL_INFLATE:
1223                 ED_undo_push(C, "Inflate Brush"); break;
1224         case SCULPT_TOOL_GRAB:
1225                 ED_undo_push(C, "Grab Brush"); break;
1226         case SCULPT_TOOL_LAYER:
1227                 ED_undo_push(C, "Layer Brush"); break;
1228         case SCULPT_TOOL_FLATTEN:
1229                 ED_undo_push(C, "Flatten Brush"); break;
1230         default:
1231                 ED_undo_push(C, "Sculpting"); break;
1232         }
1233 }
1234
1235 static int sculpt_brush_curve_preset_exec(bContext *C, wmOperator *op)
1236 {
1237         brush_curve_preset(CTX_data_scene(C)->toolsettings->sculpt->brush, RNA_enum_get(op->ptr, "mode"));
1238         return OPERATOR_FINISHED;
1239 }
1240
1241 static void SCULPT_OT_brush_curve_preset(wmOperatorType *ot)
1242 {
1243         static EnumPropertyItem prop_mode_items[] = {
1244                 {BRUSH_PRESET_SHARP, "SHARP", "Sharp Curve", ""},
1245                 {BRUSH_PRESET_SMOOTH, "SMOOTH", "Smooth Curve", ""},
1246                 {BRUSH_PRESET_MAX, "MAX", "Max Curve", ""},
1247                 {0, NULL, NULL, NULL}};
1248
1249         ot->name= "Preset";
1250         ot->idname= "SCULPT_OT_brush_curve_preset";
1251
1252         ot->exec= sculpt_brush_curve_preset_exec;
1253         ot->poll= sculpt_poll;
1254
1255         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1256
1257         RNA_def_enum(ot->srna, "mode", prop_mode_items, BRUSH_PRESET_SHARP, "Mode", "");
1258 }
1259
1260 /**** Radial control ****/
1261 static int sculpt_radial_control_invoke(bContext *C, wmOperator *op, wmEvent *event)
1262 {
1263         toggle_paint_cursor(C);
1264         brush_radial_control_invoke(op, CTX_data_scene(C)->toolsettings->sculpt->brush, 1);
1265         return WM_radial_control_invoke(C, op, event);
1266 }
1267
1268 static int sculpt_radial_control_modal(bContext *C, wmOperator *op, wmEvent *event)
1269 {
1270         int ret = WM_radial_control_modal(C, op, event);
1271         if(ret != OPERATOR_RUNNING_MODAL)
1272                 toggle_paint_cursor(C);
1273         return ret;
1274 }
1275
1276 static int sculpt_radial_control_exec(bContext *C, wmOperator *op)
1277 {
1278         int ret = brush_radial_control_exec(op, CTX_data_scene(C)->toolsettings->sculpt->brush, 1);
1279         char str[256];
1280         WM_radial_control_string(op, str, 256);
1281
1282         return ret;
1283 }
1284
1285 static void SCULPT_OT_radial_control(wmOperatorType *ot)
1286 {
1287         WM_OT_radial_control_partial(ot);
1288
1289         ot->name= "Sculpt Radial Control";
1290         ot->idname= "SCULPT_OT_radial_control";
1291
1292         ot->invoke= sculpt_radial_control_invoke;
1293         ot->modal= sculpt_radial_control_modal;
1294         ot->exec= sculpt_radial_control_exec;
1295         ot->poll= sculpt_poll;
1296
1297         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1298 }
1299
1300 /**** Operator for applying a stroke (various attributes including mouse path)
1301       using the current brush. ****/
1302
1303 static float unproject_brush_radius(SculptSession *ss, float offset)
1304 {
1305         float brush_edge[3];
1306
1307         /* In anchored mode, brush size changes with mouse loc, otherwise it's fixed using the brush radius */
1308         unproject(ss->cache->mats, brush_edge, ss->cache->initial_mouse[0] + offset,
1309                   ss->cache->initial_mouse[1], ss->cache->depth);
1310
1311         return VecLenf(ss->cache->true_location, brush_edge);
1312 }
1313
1314 static void sculpt_cache_free(StrokeCache *cache)
1315 {
1316         if(cache->layer_disps)
1317                 MEM_freeN(cache->layer_disps);
1318         if(cache->mesh_store)
1319                 MEM_freeN(cache->mesh_store);
1320         if(cache->orig_norms)
1321                 MEM_freeN(cache->orig_norms);
1322         if(cache->mats)
1323                 MEM_freeN(cache->mats);
1324         MEM_freeN(cache);
1325 }
1326
1327 /* Initialize the stroke cache invariants from operator properties */
1328 static void sculpt_update_cache_invariants(Sculpt *sd, bContext *C, wmOperator *op)
1329 {
1330         StrokeCache *cache = MEM_callocN(sizeof(StrokeCache), "stroke cache");
1331         int i;
1332
1333         sd->session->cache = cache;
1334
1335         RNA_float_get_array(op->ptr, "scale", cache->scale);
1336         cache->flag = RNA_int_get(op->ptr, "flag");
1337         RNA_float_get_array(op->ptr, "clip_tolerance", cache->clip_tolerance);
1338         RNA_int_get_array(op->ptr, "initial_mouse", cache->initial_mouse);
1339         cache->depth = RNA_float_get(op->ptr, "depth");
1340
1341         /* Truly temporary data that isn't stored in properties */
1342
1343         view3d_set_viewcontext(C, &cache->vc);
1344
1345         cache->mats = MEM_callocN(sizeof(bglMats), "sculpt bglMats");
1346         view3d_get_transformation(&cache->vc, cache->vc.obact, cache->mats);
1347
1348         sculpt_update_mesh_elements(C);
1349
1350         /* Make copies of the mesh vertex locations and normals for some tools */
1351         if(sd->brush->sculpt_tool == SCULPT_TOOL_LAYER || (sd->brush->flag & BRUSH_ANCHORED)) {
1352                 cache->layer_disps = MEM_callocN(sizeof(float) * sd->session->totvert, "layer brush displacements");
1353                 cache->mesh_store= MEM_mallocN(sizeof(float) * 3 * sd->session->totvert, "sculpt mesh vertices copy");
1354                 for(i = 0; i < sd->session->totvert; ++i)
1355                         VecCopyf(cache->mesh_store[i], sd->session->mvert[i].co);
1356
1357                 if(sd->brush->flag & BRUSH_ANCHORED) {
1358                         cache->orig_norms= MEM_mallocN(sizeof(short) * 3 * sd->session->totvert, "Sculpt orig norm");
1359                         for(i = 0; i < sd->session->totvert; ++i) {
1360                                 cache->orig_norms[i][0] = sd->session->mvert[i].no[0];
1361                                 cache->orig_norms[i][1] = sd->session->mvert[i].no[1];
1362                                 cache->orig_norms[i][2] = sd->session->mvert[i].no[2];
1363                         }
1364                 }
1365         }
1366
1367         unproject(cache->mats, cache->true_location, cache->initial_mouse[0], cache->initial_mouse[1], cache->depth);
1368         cache->radius = unproject_brush_radius(sd->session, brush_size(sd));
1369         cache->rotation = 0;
1370         cache->first_time = 1;
1371 }
1372
1373 /* Initialize the stroke cache variants from operator properties */
1374 static void sculpt_update_cache_variants(Sculpt *sd, PointerRNA *ptr)
1375 {
1376         StrokeCache *cache = sd->session->cache;
1377         float grab_location[3];
1378         int dx, dy;
1379
1380         if(!(sd->brush->flag & BRUSH_ANCHORED))
1381                 RNA_float_get_array(ptr, "location", cache->true_location);
1382         cache->flip = RNA_boolean_get(ptr, "flip");
1383         RNA_int_get_array(ptr, "mouse", cache->mouse);
1384         
1385         /* Truly temporary data that isn't stored in properties */
1386
1387         cache->previous_pixel_radius = cache->pixel_radius;
1388         cache->pixel_radius = brush_size(sd);
1389
1390         if(sd->brush->flag & BRUSH_ANCHORED) {
1391                 dx = cache->mouse[0] - cache->initial_mouse[0];
1392                 dy = cache->mouse[1] - cache->initial_mouse[1];
1393                 cache->pixel_radius = sqrt(dx*dx + dy*dy);
1394                 cache->radius = unproject_brush_radius(sd->session, cache->pixel_radius);
1395                 cache->rotation = atan2(dy, dx);
1396         }
1397         else if(sd->brush->flag & BRUSH_RAKE) {
1398                 int update;
1399
1400                 dx = cache->last_rake[0] - cache->mouse[0];
1401                 dy = cache->last_rake[1] - cache->mouse[1];
1402
1403                 update = dx*dx + dy*dy > 100;
1404
1405                 /* To prevent jitter, only update the angle if the mouse has moved over 10 pixels */
1406                 if(update && !cache->first_time)
1407                         cache->rotation = M_PI_2 + atan2(dy, dx);
1408
1409                 if(update || cache->first_time) {
1410                         cache->last_rake[0] = cache->mouse[0];
1411                         cache->last_rake[1] = cache->mouse[1];
1412                 }
1413         }
1414
1415         /* Find the grab delta */
1416         if(sd->brush->sculpt_tool == SCULPT_TOOL_GRAB) {
1417                 unproject(cache->mats, grab_location, cache->mouse[0], cache->mouse[1], cache->depth);
1418                 if(!cache->first_time)
1419                         VecSubf(cache->grab_delta, grab_location, cache->old_grab_location);
1420                 VecCopyf(cache->old_grab_location, grab_location);
1421         }
1422 }
1423
1424 /* Initialize stroke operator properties */
1425 static void sculpt_brush_stroke_init_properties(bContext *C, wmOperator *op, wmEvent *event, SculptSession *ss)
1426 {
1427         Sculpt *sd = CTX_data_tool_settings(C)->sculpt;
1428         Object *ob= CTX_data_active_object(C);
1429         ModifierData *md;
1430         ViewContext vc;
1431         float scale[3], clip_tolerance[3] = {0,0,0};
1432         int mouse[2], flag = 0;
1433
1434         /* Set scaling adjustment */
1435         scale[0] = 1.0f / ob->size[0];
1436         scale[1] = 1.0f / ob->size[1];
1437         scale[2] = 1.0f / ob->size[2];
1438         RNA_float_set_array(op->ptr, "scale", scale);
1439
1440         /* Initialize mirror modifier clipping */
1441         for(md= ob->modifiers.first; md; md= md->next) {
1442                 if(md->type==eModifierType_Mirror && (md->mode & eModifierMode_Realtime)) {
1443                         const MirrorModifierData *mmd = (MirrorModifierData*) md;
1444                         
1445                         /* Mark each axis that needs clipping along with its tolerance */
1446                         if(mmd->flag & MOD_MIR_CLIPPING) {
1447                                 flag |= CLIP_X << mmd->axis;
1448                                 if(mmd->tolerance > clip_tolerance[mmd->axis])
1449                                         clip_tolerance[mmd->axis] = mmd->tolerance;
1450                         }
1451                 }
1452         }
1453         RNA_int_set(op->ptr, "flag", flag);
1454         RNA_float_set_array(op->ptr, "clip_tolerance", clip_tolerance);
1455
1456         /* Initial mouse location */
1457         mouse[0] = event->x;
1458         mouse[1] = event->y;
1459         RNA_int_set_array(op->ptr, "initial_mouse", mouse);
1460
1461         /* Initial screen depth under the mouse */
1462         view3d_set_viewcontext(C, &vc);
1463         RNA_float_set(op->ptr, "depth", read_cached_depth(&vc, event->x, event->y));
1464
1465         sculpt_update_cache_invariants(sd, C, op);
1466 }
1467
1468 static int sculpt_brush_stroke_invoke(bContext *C, wmOperator *op, wmEvent *event)
1469 {
1470         Sculpt *sd = CTX_data_tool_settings(C)->sculpt;
1471
1472         view3d_operator_needs_opengl(C);
1473         sculpt_brush_stroke_init_properties(C, op, event, sd->session);
1474
1475         sculptmode_update_all_projverts(sd->session);
1476
1477         /* TODO: Shouldn't really have to do this at the start of every
1478            stroke, but sculpt would need some sort of notification when
1479            changes are made to the texture. */
1480         sculpt_update_tex(sd);
1481
1482         /* add modal handler */
1483         WM_event_add_modal_handler(C, &CTX_wm_window(C)->handlers, op);
1484         
1485         return OPERATOR_RUNNING_MODAL;
1486 }
1487
1488 static void sculpt_restore_mesh(Sculpt *sd)
1489 {
1490         StrokeCache *cache = sd->session->cache;
1491         int i;
1492         
1493         /* Restore the mesh before continuing with anchored stroke */
1494         if((sd->brush->flag & BRUSH_ANCHORED) && cache->mesh_store) {
1495                 for(i = 0; i < sd->session->totvert; ++i) {
1496                         VecCopyf(sd->session->mvert[i].co, cache->mesh_store[i]);
1497                         sd->session->mvert[i].no[0] = cache->orig_norms[i][0];
1498                         sd->session->mvert[i].no[1] = cache->orig_norms[i][1];
1499                         sd->session->mvert[i].no[2] = cache->orig_norms[i][2];
1500                 }
1501         }
1502 }
1503
1504 static void sculpt_post_stroke_free(SculptSession *ss)
1505 {
1506         BLI_freelistN(&ss->damaged_rects);
1507         BLI_freelistN(&ss->damaged_verts);
1508 }
1509
1510 static void sculpt_flush_update(bContext *C)
1511 {
1512         Sculpt *s = CTX_data_tool_settings(C)->sculpt;
1513         ARegion *ar = CTX_wm_region(C);
1514         MultiresModifierData *mmd = s->session->multires;
1515
1516         calc_damaged_verts(s->session);
1517
1518         if(mmd) {
1519                 if(mmd->undo_verts && mmd->undo_verts != s->session->mvert)
1520                         MEM_freeN(mmd->undo_verts);
1521                 
1522                 mmd->undo_verts = s->session->mvert;
1523                 mmd->undo_verts_tot = s->session->totvert;
1524         }
1525
1526         ED_region_tag_redraw(ar);
1527 }
1528
1529 static int sculpt_brush_stroke_modal(bContext *C, wmOperator *op, wmEvent *event)
1530 {
1531         PointerRNA itemptr;
1532         Sculpt *sd = CTX_data_tool_settings(C)->sculpt;
1533         float center[3];
1534         int mouse[2] = {event->x, event->y};
1535
1536         sculpt_update_mesh_elements(C);
1537
1538         unproject(sd->session->cache->mats, center, event->x, event->y,
1539                   read_cached_depth(&sd->session->cache->vc, event->x, event->y));
1540
1541         /* Add to stroke */
1542         RNA_collection_add(op->ptr, "stroke", &itemptr);
1543         RNA_float_set_array(&itemptr, "location", center);
1544         RNA_int_set_array(&itemptr, "mouse", mouse);
1545         RNA_boolean_set(&itemptr, "flip", event->shift);
1546         sculpt_update_cache_variants(sd, &itemptr);
1547
1548         sculpt_restore_mesh(sd);
1549         do_symmetrical_brush_actions(CTX_data_tool_settings(C)->sculpt, sd->session->cache);
1550
1551         sculpt_flush_update(C);
1552         sculpt_post_stroke_free(sd->session);
1553
1554         /* Finished */
1555         if(event->type == LEFTMOUSE && event->val == 0) {
1556                 request_depth_update(sd->session->cache->vc.rv3d);
1557
1558                 sculpt_cache_free(sd->session->cache);
1559
1560                 sculpt_undo_push(C, sd);
1561
1562                 return OPERATOR_FINISHED;
1563         }
1564
1565         return OPERATOR_RUNNING_MODAL;
1566 }
1567
1568 static int sculpt_brush_stroke_exec(bContext *C, wmOperator *op)
1569 {
1570         Sculpt *sd = CTX_data_tool_settings(C)->sculpt;
1571
1572         view3d_operator_needs_opengl(C);
1573         sculpt_update_cache_invariants(sd, C, op);
1574         sculptmode_update_all_projverts(sd->session);
1575         sculpt_update_tex(sd);
1576
1577         RNA_BEGIN(op->ptr, itemptr, "stroke") {
1578                 sculpt_update_cache_variants(sd, &itemptr);
1579
1580                 sculpt_restore_mesh(sd);
1581                 do_symmetrical_brush_actions(sd, sd->session->cache);
1582
1583                 sculpt_post_stroke_free(sd->session);
1584         }
1585         RNA_END;
1586
1587         sculpt_flush_update(C);
1588         sculpt_cache_free(sd->session->cache);
1589
1590         sculpt_undo_push(C, sd);
1591
1592         return OPERATOR_FINISHED;
1593 }
1594
1595 static void SCULPT_OT_brush_stroke(wmOperatorType *ot)
1596 {
1597         ot->flag |= OPTYPE_REGISTER;
1598
1599         /* identifiers */
1600         ot->name= "Sculpt Mode";
1601         ot->idname= "SCULPT_OT_brush_stroke";
1602         
1603         /* api callbacks */
1604         ot->invoke= sculpt_brush_stroke_invoke;
1605         ot->modal= sculpt_brush_stroke_modal;
1606         ot->exec= sculpt_brush_stroke_exec;
1607         ot->poll= sculpt_poll;
1608         
1609         /* flags (sculpt does own undo? (ton) */
1610         ot->flag= OPTYPE_REGISTER;
1611
1612         /* properties */
1613         RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
1614
1615         /* If the object has a scaling factor, brushes also need to be scaled
1616            to work as expected. */
1617         RNA_def_float_vector(ot->srna, "scale", 3, NULL, 0.0f, FLT_MAX, "Scale", "", 0.0f, 1000.0f);
1618
1619         RNA_def_int(ot->srna, "flag", 0, 0, INT_MAX, "flag", "", 0, INT_MAX);
1620
1621         /* For mirror modifiers */
1622         RNA_def_float_vector(ot->srna, "clip_tolerance", 3, NULL, 0.0f, FLT_MAX, "clip_tolerance", "", 0.0f, 1000.0f);
1623
1624         /* The initial 2D location of the mouse */
1625         RNA_def_int_vector(ot->srna, "initial_mouse", 2, NULL, INT_MIN, INT_MAX, "initial_mouse", "", INT_MIN, INT_MAX);
1626
1627         /* The initial screen depth of the mouse */
1628         RNA_def_float(ot->srna, "depth", 0.0f, 0.0f, FLT_MAX, "depth", "", 0.0f, FLT_MAX);
1629 }
1630
1631 /**** Toggle operator for turning sculpt mode on or off ****/
1632
1633 static int sculpt_toggle_mode(bContext *C, wmOperator *op)
1634 {
1635         ToolSettings *ts = CTX_data_tool_settings(C);
1636
1637         if(G.f & G_SCULPTMODE) {
1638                 multires_force_update(CTX_data_active_object(C));
1639
1640                 /* Leave sculptmode */
1641                 G.f &= ~G_SCULPTMODE;
1642
1643                 toggle_paint_cursor(C);
1644
1645                 sculptsession_free(ts->sculpt);
1646         }
1647         else {
1648                 MTex *mtex; // XXX: temporary
1649
1650                 /* Enter sculptmode */
1651
1652                 G.f |= G_SCULPTMODE;
1653                 
1654                 /* Create persistent sculpt mode data */
1655                 if(!ts->sculpt)
1656                         ts->sculpt = MEM_callocN(sizeof(Sculpt), "sculpt mode data");
1657
1658                 /* Create sculpt mode session data */
1659                 if(ts->sculpt->session)
1660                         MEM_freeN(ts->sculpt->session);
1661                 ts->sculpt->session = MEM_callocN(sizeof(SculptSession), "sculpt session");
1662
1663                 toggle_paint_cursor(C);
1664
1665
1666
1667                 /* XXX: testing */
1668                 /* Needed for testing, if there's no brush then create one */
1669                 ts->sculpt->brush = add_brush("test brush");
1670                 /* Also for testing, set the brush texture to the first available one */
1671                 if(G.main->tex.first) {
1672                         Tex *tex = G.main->tex.first;
1673                         if(tex->type) {
1674                                 mtex = MEM_callocN(sizeof(MTex), "test mtex");
1675                                 ts->sculpt->brush->texact = 0;
1676                                 ts->sculpt->brush->mtex[0] = mtex;
1677                                 mtex->tex = tex;
1678                                 mtex->size[0] = mtex->size[1] = mtex->size[2] = 50;
1679                         }
1680                 }
1681         }
1682
1683         return OPERATOR_FINISHED;
1684 }
1685
1686 static void SCULPT_OT_sculptmode_toggle(wmOperatorType *ot)
1687 {
1688         /* identifiers */
1689         ot->name= "Sculpt Mode";
1690         ot->idname= "SCULPT_OT_sculptmode_toggle";
1691         
1692         /* api callbacks */
1693         ot->exec= sculpt_toggle_mode;
1694         ot->poll= ED_operator_object_active;
1695         
1696         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1697 }
1698
1699 void ED_operatortypes_sculpt()
1700 {
1701         WM_operatortype_append(SCULPT_OT_radial_control);
1702         WM_operatortype_append(SCULPT_OT_brush_stroke);
1703         WM_operatortype_append(SCULPT_OT_sculptmode_toggle);
1704         WM_operatortype_append(SCULPT_OT_brush_curve_preset);
1705 }
1706
1707 void sculpt(Sculpt *sd)
1708 {
1709 #if 0
1710         SculptSession *ss= sd->session;
1711         Object *ob= NULL; /*XXX */
1712         Mesh *me;
1713         MultiresModifierData *mmd = NULL;
1714         /* lastSigMouse is for the rake, to store the last place the mouse movement was significant */
1715         short mouse[2], mvalo[2], lastSigMouse[2],firsttime=1, mousebut;
1716         short modifier_calculations= 0;
1717         BrushAction *a = MEM_callocN(sizeof(BrushAction), "brush action");
1718         short spacing= 32000;
1719         int scissor_box[4];
1720         float offsetRot;
1721         int smooth_stroke = 0, i;
1722         int anchored, rake = 0 /* XXX: rake = ? */;
1723
1724         /* XXX: checking that sculpting is allowed
1725         if(!(G.f & G_SCULPTMODE) || G.obedit || !ob || ob->id.lib || !get_mesh(ob) || (get_mesh(ob)->totface == 0))
1726                 return;
1727         if(!(ob->lay & G.vd->lay))
1728                 error("Active object is not in this layer");
1729         if(ob_get_keyblock(ob)) {
1730                 if(!(ob->shapeflag & OB_SHAPE_LOCK)) {
1731                         error("Cannot sculpt on unlocked shape key");
1732                         return;
1733                 }
1734         }*/
1735         
1736         anchored = sd->brush->flag & BRUSH_ANCHORED;
1737         smooth_stroke = (sd->flags & SCULPT_INPUT_SMOOTH) && (sd->brush->sculpt_tool != SCULPT_TOOL_GRAB) && !anchored;
1738
1739         if(smooth_stroke)
1740                 sculpt_stroke_new(256);
1741
1742         ss->damaged_rects.first = ss->damaged_rects.last = NULL;
1743         ss->damaged_verts.first = ss->damaged_verts.last = NULL;
1744         ss->vertexcosnos = NULL;
1745
1746         mmd = sculpt_multires_active(ob);
1747
1748         /* Check that vertex users are up-to-date */
1749         if(ob != active_ob || !ss->vertex_users || ss->vertex_users_size != cache->totvert) {
1750                 sculpt_vertexusers_free(ss);
1751                 calc_vertex_users(ss);
1752                 if(ss->projverts)
1753                         MEM_freeN(ss->projverts);
1754                 ss->projverts = NULL;
1755                 active_ob= ob;
1756         }
1757                 
1758         glEnableClientState(GL_VERTEX_ARRAY);
1759         glEnableClientState(GL_NORMAL_ARRAY);
1760
1761         /*XXX:
1762         persp(PERSP_VIEW);
1763         getmouseco_areawin(mvalo);*/
1764
1765         /* Init texture
1766            FIXME: Shouldn't be doing this every time! */
1767         if(sd->tex_mode!=SCULPTREPT_3D)
1768                 sculptmode_update_tex(sd);
1769
1770         /*XXX: getmouseco_areawin(mouse); */
1771         mvalo[0]= mouse[0];
1772         mvalo[1]= mouse[1];
1773         lastSigMouse[0]=mouse[0];
1774         lastSigMouse[1]=mouse[1];
1775         mousebut = 0; /* XXX: L_MOUSE; */
1776
1777         /* If modifier_calculations is true, then extra time must be spent
1778            updating the mesh. This takes a *lot* longer, so it's worth
1779            skipping if the modifier stack is empty. */
1780         modifier_calculations= sculpt_modifiers_active(ob);
1781
1782         if(modifier_calculations)
1783                 ss->vertexcosnos= mesh_get_mapped_verts_nors(NULL, ob); /* XXX: scene = ? */
1784         sculptmode_update_all_projverts(ss);
1785
1786         /* Capture original copy */
1787         if(sd->flags & SCULPT_DRAW_FAST)
1788                 glAccum(GL_LOAD, 1);
1789
1790         /* Get original scissor box */
1791         glGetIntegerv(GL_SCISSOR_BOX, scissor_box);
1792         
1793         /* For raking, get the original angle*/
1794         offsetRot=sculpt_tex_angle(sd);
1795
1796         me = get_mesh(ob);
1797
1798         while (/*XXX:get_mbut() & mousebut*/0) {
1799                 /* XXX: getmouseco_areawin(mouse); */
1800                 /* If rake, and the mouse has moved over 10 pixels (euclidean) (prevents jitter) then get the new angle */
1801                 if (rake && (pow(lastSigMouse[0]-mouse[0],2)+pow(lastSigMouse[1]-mouse[1],2))>100){
1802                         /*Nasty looking, but just orig + new angle really*/
1803                         set_tex_angle(sd, offsetRot+180.+to_deg(atan2((float)(mouse[1]-lastSigMouse[1]),(float)(mouse[0]-lastSigMouse[0]))));
1804                         lastSigMouse[0]=mouse[0];
1805                         lastSigMouse[1]=mouse[1];
1806                 }
1807                 
1808                 if(firsttime || mouse[0]!=mvalo[0] || mouse[1]!=mvalo[1] ||
1809                    sd->brush->flag & BRUSH_AIRBRUSH) {
1810                         a->firsttime = firsttime;
1811                         firsttime= 0;
1812
1813                         if(smooth_stroke)
1814                                 sculpt_stroke_add_point(ss->stroke, mouse[0], mouse[1]);
1815
1816                         spacing+= sqrt(pow(mvalo[0]-mouse[0],2)+pow(mvalo[1]-mouse[1],2));
1817
1818                         if(modifier_calculations && !ss->vertexcosnos)
1819                                 ss->vertexcosnos= mesh_get_mapped_verts_nors(NULL, ob); /*XXX scene = ? */
1820
1821                         if(sd->brush->sculpt_tool != SCULPT_TOOL_GRAB) {
1822                                 if(anchored) {
1823                                         /* Restore the mesh before continuing with anchored stroke */
1824                                         /*if(a->mesh_store) {
1825                                                 for(i = 0; i < cache->totvert; ++i) {
1826                                                         VecCopyf(cache->mvert[i].co, &a->mesh_store[i].x);
1827                                                         cache->mvert[i].no[0] = a->orig_norms[i][0];
1828                                                         cache->mvert[i].no[1] = a->orig_norms[i][1];
1829                                                         cache->mvert[i].no[2] = a->orig_norms[i][2];
1830                                                 }
1831                                                 }*/
1832                                         
1833                                         //do_symmetrical_brush_actions(sd, a, mouse, NULL);
1834                                 }
1835                                 else {
1836                                         if(smooth_stroke) {
1837                                                 sculpt_stroke_apply(sd, ss->stroke);
1838                                         }
1839                                         else if(sd->spacing==0 || spacing>sd->spacing) {
1840                                                 //do_symmetrical_brush_actions(sd, a, mouse, NULL);
1841                                                 spacing= 0;
1842                                         }
1843                                 }
1844                         }
1845                         else {
1846                                 //do_symmetrical_brush_actions(sd, a, mouse, mvalo);
1847                                 //unproject(ss, sd->pivot, mouse[0], mouse[1], a->depth);
1848                         }
1849
1850                         if((!ss->multires && modifier_calculations) || ob_get_keyblock(ob)) {
1851                                 /* XXX: DAG_object_flush_update(G.scene, ob, OB_RECALC_DATA); */ }
1852
1853                         if(modifier_calculations || sd->brush->sculpt_tool == SCULPT_TOOL_GRAB || !(sd->flags & SCULPT_DRAW_FAST)) {
1854                                 calc_damaged_verts(ss, a);
1855                                 /*XXX: scrarea_do_windraw(curarea);
1856                                 screen_swapbuffers(); */
1857                         } else { /* Optimized drawing */
1858                                 calc_damaged_verts(ss, a);
1859
1860                                 /* Draw the stored image to the screen */
1861                                 glAccum(GL_RETURN, 1);
1862
1863                                 sculpt_clear_damaged_areas(ss);
1864                                 
1865                                 /* Draw all the polygons that are inside the modified area(s) */
1866                                 glScissor(scissor_box[0], scissor_box[1], scissor_box[2], scissor_box[3]);
1867                                 /* XXX: sculptmode_draw_mesh(1); */
1868                                 glAccum(GL_LOAD, 1);
1869
1870                                 projverts_clear_inside(ss);
1871
1872                                 /* XXX: persp(PERSP_WIN); */
1873                                 glDisable(GL_DEPTH_TEST);
1874                                 
1875                                 /* Draw cursor */
1876                                 if(sd->flags & SCULPT_TOOL_DRAW)
1877                                         fdrawXORcirc((float)mouse[0],(float)mouse[1],sd->brush->size);
1878                                 /* XXX: if(smooth_stroke)
1879                                    sculpt_stroke_draw();
1880                                 
1881                                 myswapbuffers(); */
1882                         }
1883
1884                         BLI_freelistN(&ss->damaged_rects);
1885                         ss->damaged_rects.first = ss->damaged_rects.last = NULL;
1886         
1887                         mvalo[0]= mouse[0];
1888                         mvalo[1]= mouse[1];
1889
1890                         if(ss->vertexcosnos) {
1891                                 MEM_freeN(ss->vertexcosnos);
1892                                 ss->vertexcosnos= NULL;
1893                         }
1894
1895                 }
1896                 else { /*XXX:BIF_wait_for_statechange();*/ }
1897         }
1898
1899         /* Set the rotation of the brush back to what it was before any rake */
1900         set_tex_angle(sd, offsetRot);
1901         
1902         if(smooth_stroke) {
1903                 sculpt_stroke_apply_all(sd, ss->stroke);
1904                 calc_damaged_verts(ss, a);
1905                 BLI_freelistN(&ss->damaged_rects);
1906         }
1907
1908         //if(a->layer_disps) MEM_freeN(a->layer_disps);
1909         //if(a->mesh_store) MEM_freeN(a->mesh_store);
1910         //if(a->orig_norms) MEM_freeN(a->orig_norms);
1911         for(i=0; i<8; ++i)
1912                 BLI_freelistN(&a->grab_active_verts[i]);
1913         MEM_freeN(a);
1914         sculpt_stroke_free(ss->stroke);
1915         ss->stroke = NULL;
1916
1917         if(mmd) {
1918                 if(mmd->undo_verts && mmd->undo_verts != cache->mvert)
1919                         MEM_freeN(mmd->undo_verts);
1920                 
1921                 mmd->undo_verts = cache->mvert;
1922                 mmd->undo_verts_tot = cache->totvert;
1923         }
1924
1925         //sculpt_undo_push(sd);
1926
1927         /* XXX: if(G.vd->depths) G.vd->depths->damaged= 1;
1928            allqueue(REDRAWVIEW3D, 0); */
1929 #endif
1930 }
1931
1932 /* Partial Mesh Visibility */
1933
1934 /* XXX: Partial vis. always was a mess, have to figure something out */
1935 #if 0
1936 /* mode: 0=hide outside selection, 1=hide inside selection */
1937 static void sculptmode_do_pmv(Object *ob, rcti *hb_2d, int mode)
1938 {
1939         Mesh *me= get_mesh(ob);
1940         float hidebox[6][3];
1941         vec3f plane_normals[4];
1942         float plane_ds[4];
1943         unsigned i, j;
1944         unsigned ndx_show, ndx_hide;
1945         MVert *nve;
1946         unsigned face_cnt_show= 0, face_ndx_show= 0;
1947         unsigned edge_cnt_show= 0, edge_ndx_show= 0;
1948         unsigned *old_map= NULL;
1949         const unsigned SHOW= 0, HIDE=1;
1950
1951         /* Convert hide box from 2D to 3D */
1952         unproject(hidebox[0], hb_2d->xmin, hb_2d->ymax, 1);
1953         unproject(hidebox[1], hb_2d->xmax, hb_2d->ymax, 1);
1954         unproject(hidebox[2], hb_2d->xmax, hb_2d->ymin, 1);
1955         unproject(hidebox[3], hb_2d->xmin, hb_2d->ymin, 1);
1956         unproject(hidebox[4], hb_2d->xmin, hb_2d->ymax, 0);
1957         unproject(hidebox[5], hb_2d->xmax, hb_2d->ymin, 0);
1958         
1959         /* Calculate normals for each side of hide box */
1960         CalcNormFloat(hidebox[0], hidebox[1], hidebox[4], &plane_normals[0].x);
1961         CalcNormFloat(hidebox[1], hidebox[2], hidebox[5], &plane_normals[1].x);
1962         CalcNormFloat(hidebox[2], hidebox[3], hidebox[5], &plane_normals[2].x);
1963         CalcNormFloat(hidebox[3], hidebox[0], hidebox[4], &plane_normals[3].x);
1964         
1965         /* Calculate D for each side of hide box */
1966         for(i= 0; i<4; ++i)
1967                 plane_ds[i]= hidebox[i][0]*plane_normals[i].x + hidebox[i][1]*plane_normals[i].y +
1968                         hidebox[i][2]*plane_normals[i].z;
1969         
1970         /* Add partial visibility to mesh */
1971         if(!me->pv) {
1972                 me->pv= MEM_callocN(sizeof(PartialVisibility),"PartialVisibility");
1973         } else {
1974                 old_map= MEM_callocN(sizeof(unsigned)*me->pv->totvert,"PMV oldmap");
1975                 for(i=0; i<me->pv->totvert; ++i) {
1976                         old_map[i]= me->pv->vert_map[i]<me->totvert?0:1;
1977                 }
1978                 mesh_pmv_revert(ob, me);
1979         }
1980         
1981         /* Kill sculpt data */
1982         active_ob= NULL;
1983         
1984         /* Initalize map with which verts are to be hidden */
1985         me->pv->vert_map= MEM_mallocN(sizeof(unsigned)*me->totvert, "PMV vertmap");
1986         me->pv->totvert= me->totvert;
1987         me->totvert= 0;
1988         for(i=0; i<me->pv->totvert; ++i) {
1989                 me->pv->vert_map[i]= mode ? HIDE:SHOW;
1990                 for(j=0; j<4; ++j) {
1991                         if(me->mvert[i].co[0] * plane_normals[j].x +
1992                            me->mvert[i].co[1] * plane_normals[j].y +
1993                            me->mvert[i].co[2] * plane_normals[j].z < plane_ds[j] ) {
1994                                 me->pv->vert_map[i]= mode ? SHOW:HIDE; /* Vert is outside the hide box */
1995                                 break;
1996                         }
1997                 }
1998                 if(old_map && old_map[i]) me->pv->vert_map[i]= 1;
1999                 if(!me->pv->vert_map[i]) ++me->totvert;
2000
2001         }
2002         if(old_map) MEM_freeN(old_map);
2003
2004         /* Find out how many faces to show */
2005         for(i=0; i<me->totface; ++i) {
2006                 if(!me->pv->vert_map[me->mface[i].v1] &&
2007                    !me->pv->vert_map[me->mface[i].v2] &&
2008                    !me->pv->vert_map[me->mface[i].v3]) {
2009                         if(me->mface[i].v4) {
2010                                 if(!me->pv->vert_map[me->mface[i].v4])
2011                                         ++face_cnt_show;
2012                         }
2013                         else ++face_cnt_show;
2014                 }
2015         }
2016         /* Find out how many edges to show */
2017         for(i=0; i<me->totedge; ++i) {
2018                 if(!me->pv->vert_map[me->medge[i].v1] &&
2019                    !me->pv->vert_map[me->medge[i].v2])
2020                         ++edge_cnt_show;
2021         }
2022
2023         /* Create new vert array and reset each vert's map with map[old]=new index */
2024         nve= MEM_mallocN(sizeof(MVert)*me->pv->totvert, "PMV verts");
2025         ndx_show= 0; ndx_hide= me->totvert;
2026         for(i=0; i<me->pv->totvert; ++i) {
2027                 if(me->pv->vert_map[i]) {
2028                         me->pv->vert_map[i]= ndx_hide;
2029                         nve[me->pv->vert_map[i]]= me->mvert[i];
2030                         ++ndx_hide;
2031                 } else {
2032                         me->pv->vert_map[i]= ndx_show;
2033                         nve[me->pv->vert_map[i]]= me->mvert[i];
2034                         ++ndx_show;
2035                 }
2036         }
2037         CustomData_free_layer_active(&me->vdata, CD_MVERT, me->pv->totvert);
2038         me->mvert= CustomData_add_layer(&me->vdata, CD_MVERT, CD_ASSIGN, nve, me->totvert);
2039
2040         /* Create new face array */
2041         me->pv->old_faces= me->mface;
2042         me->pv->totface= me->totface;
2043         me->mface= MEM_mallocN(sizeof(MFace)*face_cnt_show, "PMV faces");
2044         for(i=0; i<me->totface; ++i) {
2045                 MFace *pr_f= &me->pv->old_faces[i];
2046                 char show= 0;
2047
2048                 if(me->pv->vert_map[pr_f->v1] < me->totvert &&
2049                    me->pv->vert_map[pr_f->v2] < me->totvert &&
2050                    me->pv->vert_map[pr_f->v3] < me->totvert) {
2051                         if(pr_f->v4) {
2052                                 if(me->pv->vert_map[pr_f->v4] < me->totvert)
2053                                         show= 1;
2054                         }
2055                         else show= 1;
2056                 }
2057
2058                 if(show) {
2059                         MFace *cr_f= &me->mface[face_ndx_show];
2060                         *cr_f= *pr_f;
2061                         cr_f->v1= me->pv->vert_map[pr_f->v1];
2062                         cr_f->v2= me->pv->vert_map[pr_f->v2];
2063                         cr_f->v3= me->pv->vert_map[pr_f->v3];
2064                         cr_f->v4= pr_f->v4 ? me->pv->vert_map[pr_f->v4] : 0;
2065                         test_index_face(cr_f,NULL,0,pr_f->v4?4:3);
2066                         ++face_ndx_show;
2067                 }
2068         }
2069         me->totface= face_cnt_show;
2070         CustomData_set_layer(&me->fdata, CD_MFACE, me->mface);
2071
2072         /* Create new edge array */
2073         me->pv->old_edges= me->medge;
2074         me->pv->totedge= me->totedge;
2075         me->medge= MEM_mallocN(sizeof(MEdge)*edge_cnt_show, "PMV edges");
2076         me->pv->edge_map= MEM_mallocN(sizeof(int)*me->pv->totedge,"PMV edgemap");
2077         for(i=0; i<me->totedge; ++i) {
2078                 if(me->pv->vert_map[me->pv->old_edges[i].v1] < me->totvert &&
2079                    me->pv->vert_map[me->pv->old_edges[i].v2] < me->totvert) {
2080                         MEdge *cr_e= &me->medge[edge_ndx_show];
2081                         me->pv->edge_map[i]= edge_ndx_show;
2082                         *cr_e= me->pv->old_edges[i];
2083                         cr_e->v1= me->pv->vert_map[me->pv->old_edges[i].v1];
2084                         cr_e->v2= me->pv->vert_map[me->pv->old_edges[i].v2];
2085                         ++edge_ndx_show;
2086                 }
2087                 else me->pv->edge_map[i]= -1;
2088         }
2089         me->totedge= edge_cnt_show;
2090         CustomData_set_layer(&me->edata, CD_MEDGE, me->medge);
2091
2092         /* XXX: DAG_object_flush_update(G.scene, OBACT, OB_RECALC_DATA); */
2093 }
2094
2095 static rcti sculptmode_pmv_box()
2096 {
2097         /*XXX:  short down[2], mouse[2];
2098         rcti ret;
2099
2100         getmouseco_areawin(down);
2101
2102         while((get_mbut()&L_MOUSE) || (get_mbut()&R_MOUSE)) {
2103                 getmouseco_areawin(mouse);
2104
2105                 scrarea_do_windraw(curarea);
2106
2107                 persp(PERSP_WIN);
2108                 glLineWidth(2);
2109                 setlinestyle(2);
2110                 sdrawXORline(down[0],down[1],mouse[0],down[1]);
2111                 sdrawXORline(mouse[0],down[1],mouse[0],mouse[1]);
2112                 sdrawXORline(mouse[0],mouse[1],down[0],mouse[1]);
2113                 sdrawXORline(down[0],mouse[1],down[0],down[1]);
2114                 setlinestyle(0);
2115                 glLineWidth(1);
2116                 persp(PERSP_VIEW);
2117
2118                 screen_swapbuffers();
2119                 backdrawview3d(0);
2120         }
2121
2122         ret.xmin= down[0]<mouse[0]?down[0]:mouse[0];
2123         ret.ymin= down[1]<mouse[1]?down[1]:mouse[1];
2124         ret.xmax= down[0]>mouse[0]?down[0]:mouse[0];
2125         ret.ymax= down[1]>mouse[1]?down[1]:mouse[1];
2126         return ret;*/
2127 }
2128
2129 void sculptmode_pmv(int mode)
2130 {
2131         Object *ob= NULL; /*XXX: OBACT; */
2132         rcti hb_2d;
2133         
2134         if(ob_get_key(ob)) {
2135                 error("Cannot hide mesh with shape keys enabled");
2136                 return;
2137         }
2138         
2139         hb_2d= sculptmode_pmv_box(); /* Get 2D hide box */
2140         
2141         sculptmode_correct_state();
2142
2143         waitcursor(1);
2144
2145         if(hb_2d.xmax-hb_2d.xmin > 3 && hb_2d.ymax-hb_2d.ymin > 3) {
2146                 init_sculptmatrices();
2147
2148                 sculptmode_do_pmv(ob,&hb_2d,mode);
2149         }
2150         else mesh_pmv_off(ob, get_mesh(ob));
2151
2152         /*XXX: scrarea_do_windraw(curarea); */
2153
2154         waitcursor(0);
2155 }
2156 #endif