Fix #28162: texture properties didn't show correct texture datablock chooser
[blender.git] / source / blender / blenkernel / intern / texture.c
1 /* texture.c
2  *
3  *
4  * $Id$
5  *
6  * ***** BEGIN GPL LICENSE BLOCK *****
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * as published by the Free Software Foundation; either version 2
11  * of the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software Foundation,
20  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21  *
22  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
23  * All rights reserved.
24  *
25  * The Original Code is: all of this file.
26  *
27  * Contributor(s): none yet.
28  *
29  * ***** END GPL LICENSE BLOCK *****
30  */
31
32 /** \file blender/blenkernel/intern/texture.c
33  *  \ingroup bke
34  */
35
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <math.h>
41
42 #include "MEM_guardedalloc.h"
43
44 #include "BLI_blenlib.h"
45 #include "BLI_dynlib.h"
46 #include "BLI_math.h"
47 #include "BLI_kdopbvh.h"
48 #include "BLI_utildefines.h"
49
50 #include "DNA_key_types.h"
51 #include "DNA_object_types.h"
52 #include "DNA_lamp_types.h"
53 #include "DNA_material_types.h"
54 #include "DNA_world_types.h"
55 #include "DNA_brush_types.h"
56 #include "DNA_node_types.h"
57 #include "DNA_color_types.h"
58 #include "DNA_particle_types.h"
59
60 #include "IMB_imbuf.h"
61
62 #include "BKE_plugin_types.h"
63 #include "BKE_utildefines.h"
64 #include "BKE_global.h"
65 #include "BKE_main.h"
66
67 #include "BKE_library.h"
68 #include "BKE_image.h"
69 #include "BKE_material.h"
70 #include "BKE_texture.h"
71 #include "BKE_key.h"
72 #include "BKE_icons.h"
73 #include "BKE_node.h"
74 #include "BKE_animsys.h"
75 #include "BKE_colortools.h"
76
77 /* ------------------------------------------------------------------------- */
78
79 /* All support for plugin textures: */
80 int test_dlerr(const char *name, const char *symbol)
81 {
82         char *err;
83         
84         err= BLI_dynlib_get_error_as_string(NULL);
85         if(err) {
86                 printf("var1: %s, var2: %s, var3: %s\n", name, symbol, err);
87                 return 1;
88         }
89         
90         return 0;
91 }
92
93 /* ------------------------------------------------------------------------- */
94
95 void open_plugin_tex(PluginTex *pit)
96 {
97         int (*version)(void);
98         
99         /* init all the happy variables */
100         pit->doit= NULL;
101         pit->pname= NULL;
102         pit->stnames= NULL;
103         pit->varstr= NULL;
104         pit->result= NULL;
105         pit->cfra= NULL;
106         pit->version= 0;
107         pit->instance_init= NULL;
108         
109         /* clear the error list */
110         BLI_dynlib_get_error_as_string(NULL);
111
112         /* no BLI_dynlib_close! multiple opened plugins... */
113         /* if(pit->handle) BLI_dynlib_close(pit->handle); */
114         /* pit->handle= 0; */
115
116         /* open the needed object */
117         pit->handle= BLI_dynlib_open(pit->name);
118         if(test_dlerr(pit->name, pit->name)) return;
119
120         if (pit->handle != NULL) {
121                 /* find the address of the version function */
122                 version= (int (*)(void)) BLI_dynlib_find_symbol(pit->handle, "plugin_tex_getversion");
123                 if (test_dlerr(pit->name, "plugin_tex_getversion")) return;
124                 
125                 if (version != NULL) {
126                         pit->version= version();
127                         if( pit->version >= 2 && pit->version <=6) {
128                                 int (*info_func)(PluginInfo *);
129                                 PluginInfo *info= (PluginInfo*) MEM_mallocN(sizeof(PluginInfo), "plugin_info"); 
130
131                                 info_func= (int (*)(PluginInfo *))BLI_dynlib_find_symbol(pit->handle, "plugin_getinfo");
132                                 if (!test_dlerr(pit->name, "plugin_getinfo")) {
133                                         info->instance_init = NULL;
134
135                                         info_func(info);
136
137                                         pit->doit= (int(*)(void)) info->tex_doit;
138                                         pit->callback= (void(*)(unsigned short)) info->callback;
139                                         pit->stypes= info->stypes;
140                                         pit->vars= info->nvars;
141                                         pit->pname= info->name;
142                                         pit->stnames= info->snames;
143                                         pit->varstr= info->varstr;
144                                         pit->result= info->result;
145                                         pit->cfra= info->cfra;
146                                         pit->instance_init = info->instance_init;
147                                         if (info->init) info->init();
148                                 }
149                                 MEM_freeN(info);
150                         } else {
151                                 printf ("Plugin returned unrecognized version number\n");
152                                 return;
153                         }
154                 }
155         }
156 }
157
158 /* ------------------------------------------------------------------------- */
159
160 /* very badlevel define to bypass linking with BIF_interface.h */
161 #define INT     96
162 #define FLO     128
163
164 PluginTex *add_plugin_tex(char *str)
165 {
166         PluginTex *pit;
167         VarStruct *varstr;
168         int a;
169         
170         pit= MEM_callocN(sizeof(PluginTex), "plugintex");
171         
172         strcpy(pit->name, str);
173         open_plugin_tex(pit);
174         
175         if(pit->doit==NULL) {
176                 if(pit->handle==NULL) {;} //XXX error("no plugin: %s", str);
177                 else {;} //XXX error("in plugin: %s", str);
178                 MEM_freeN(pit);
179                 return NULL;
180         }
181         
182         varstr= pit->varstr;
183         for(a=0; a<pit->vars; a++, varstr++) {
184                 if( (varstr->type & FLO)==FLO)
185                         pit->data[a]= varstr->def;
186                 else if( (varstr->type & INT)==INT)
187                         *((int *)(pit->data+a))= (int) varstr->def;
188         }
189
190         if (pit->instance_init)
191                 pit->instance_init((void *) pit->data);
192
193         return pit;
194 }
195
196 /* ------------------------------------------------------------------------- */
197
198 void free_plugin_tex(PluginTex *pit)
199 {
200         if(pit==NULL) return;
201                 
202         /* no BLI_dynlib_close: same plugin can be opened multiple times, 1 handle */
203         MEM_freeN(pit); 
204 }
205
206 /* ****************** Mapping ******************* */
207
208 TexMapping *add_mapping(void)
209 {
210         TexMapping *texmap= MEM_callocN(sizeof(TexMapping), "Tex map");
211         
212         texmap->size[0]= texmap->size[1]= texmap->size[2]= 1.0f;
213         texmap->max[0]= texmap->max[1]= texmap->max[2]= 1.0f;
214         unit_m4(texmap->mat);
215         
216         return texmap;
217 }
218
219 void init_mapping(TexMapping *texmap)
220 {
221         float eul[3], smat[3][3], rmat[3][3], mat[3][3];
222         
223         size_to_mat3( smat,texmap->size);
224         
225         eul[0]= DEG2RADF(texmap->rot[0]);
226         eul[1]= DEG2RADF(texmap->rot[1]);
227         eul[2]= DEG2RADF(texmap->rot[2]);
228         eul_to_mat3( rmat,eul);
229         
230         mul_m3_m3m3(mat, rmat, smat);
231         
232         copy_m4_m3(texmap->mat, mat);
233         VECCOPY(texmap->mat[3], texmap->loc);
234
235 }
236
237 /* ****************** COLORBAND ******************* */
238
239 void init_colorband(ColorBand *coba, int rangetype)
240 {
241         int a;
242         
243         coba->data[0].pos= 0.0;
244         coba->data[1].pos= 1.0;
245         
246         if(rangetype==0) {
247                 coba->data[0].r= 0.0;
248                 coba->data[0].g= 0.0;
249                 coba->data[0].b= 0.0;
250                 coba->data[0].a= 0.0;
251                 
252                 coba->data[1].r= 1.0;
253                 coba->data[1].g= 1.0;
254                 coba->data[1].b= 1.0;
255                 coba->data[1].a= 1.0;
256         }
257         else {
258                 coba->data[0].r= 0.0;
259                 coba->data[0].g= 0.0;
260                 coba->data[0].b= 0.0;
261                 coba->data[0].a= 1.0;
262                 
263                 coba->data[1].r= 1.0;
264                 coba->data[1].g= 1.0;
265                 coba->data[1].b= 1.0;
266                 coba->data[1].a= 1.0;
267         }
268         
269         for(a=2; a<MAXCOLORBAND; a++) {
270                 coba->data[a].r= 0.5;
271                 coba->data[a].g= 0.5;
272                 coba->data[a].b= 0.5;
273                 coba->data[a].a= 1.0;
274                 coba->data[a].pos= 0.5;
275         }
276         
277         coba->tot= 2;
278         
279 }
280
281 ColorBand *add_colorband(int rangetype)
282 {
283         ColorBand *coba;
284         
285         coba= MEM_callocN( sizeof(ColorBand), "colorband");
286         init_colorband(coba, rangetype);
287         
288         return coba;
289 }
290
291 /* ------------------------------------------------------------------------- */
292
293 int do_colorband(ColorBand *coba, float in, float out[4])
294 {
295         CBData *cbd1, *cbd2, *cbd0, *cbd3;
296         float fac, mfac, t[4];
297         int a;
298         
299         if(coba==NULL || coba->tot==0) return 0;
300         
301         cbd1= coba->data;
302         if(coba->tot==1) {
303                 out[0]= cbd1->r;
304                 out[1]= cbd1->g;
305                 out[2]= cbd1->b;
306                 out[3]= cbd1->a;
307         }
308         else {
309                 if(in <= cbd1->pos && coba->ipotype<2) {
310                         out[0]= cbd1->r;
311                         out[1]= cbd1->g;
312                         out[2]= cbd1->b;
313                         out[3]= cbd1->a;
314                 }
315                 else {
316                         CBData left, right;
317                         
318                         /* we're looking for first pos > in */
319                         for(a=0; a<coba->tot; a++, cbd1++) if(cbd1->pos > in) break;
320                                 
321                         if(a==coba->tot) {
322                                 cbd2= cbd1-1;
323                                 right= *cbd2;
324                                 right.pos= 1.0f;
325                                 cbd1= &right;
326                         }
327                         else if(a==0) {
328                                 left= *cbd1;
329                                 left.pos= 0.0f;
330                                 cbd2= &left;
331                         }
332                         else cbd2= cbd1-1;
333                         
334                         if(in >= cbd1->pos && coba->ipotype<2) {
335                                 out[0]= cbd1->r;
336                                 out[1]= cbd1->g;
337                                 out[2]= cbd1->b;
338                                 out[3]= cbd1->a;
339                         }
340                         else {
341                 
342                                 if(cbd2->pos!=cbd1->pos)
343                                         fac= (in-cbd1->pos)/(cbd2->pos-cbd1->pos);
344                                 else {
345                                         /* was setting to 0.0 in 2.56 & previous, but this
346                                          * is incorrect for the last element, see [#26732] */
347                                         fac= (a != coba->tot) ? 0.0f : 1.0f;
348                                 }
349                                 
350                                 if (coba->ipotype==4) {
351                                         /* constant */
352                                         out[0]= cbd2->r;
353                                         out[1]= cbd2->g;
354                                         out[2]= cbd2->b;
355                                         out[3]= cbd2->a;
356                                         return 1;
357                                 }
358                                 
359                                 if(coba->ipotype>=2) {
360                                         /* ipo from right to left: 3 2 1 0 */
361                                         
362                                         if(a>=coba->tot-1) cbd0= cbd1;
363                                         else cbd0= cbd1+1;
364                                         if(a<2) cbd3= cbd2;
365                                         else cbd3= cbd2-1;
366                                         
367                                         CLAMP(fac, 0.0f, 1.0f);
368                                         
369                                         if(coba->ipotype==3)
370                                                 key_curve_position_weights(fac, t, KEY_CARDINAL);
371                                         else
372                                                 key_curve_position_weights(fac, t, KEY_BSPLINE);
373
374                                         out[0]= t[3]*cbd3->r +t[2]*cbd2->r +t[1]*cbd1->r +t[0]*cbd0->r;
375                                         out[1]= t[3]*cbd3->g +t[2]*cbd2->g +t[1]*cbd1->g +t[0]*cbd0->g;
376                                         out[2]= t[3]*cbd3->b +t[2]*cbd2->b +t[1]*cbd1->b +t[0]*cbd0->b;
377                                         out[3]= t[3]*cbd3->a +t[2]*cbd2->a +t[1]*cbd1->a +t[0]*cbd0->a;
378                                         CLAMP(out[0], 0.0f, 1.0f);
379                                         CLAMP(out[1], 0.0f, 1.0f);
380                                         CLAMP(out[2], 0.0f, 1.0f);
381                                         CLAMP(out[3], 0.0f, 1.0f);
382                                 }
383                                 else {
384                                 
385                                         if(coba->ipotype==1) {  /* EASE */
386                                                 mfac= fac*fac;
387                                                 fac= 3.0f*mfac-2.0f*mfac*fac;
388                                         }
389                                         mfac= 1.0f-fac;
390                                         
391                                         out[0]= mfac*cbd1->r + fac*cbd2->r;
392                                         out[1]= mfac*cbd1->g + fac*cbd2->g;
393                                         out[2]= mfac*cbd1->b + fac*cbd2->b;
394                                         out[3]= mfac*cbd1->a + fac*cbd2->a;
395                                 }
396                         }
397                 }
398         }
399         return 1;       /* OK */
400 }
401
402 void colorband_table_RGBA(ColorBand *coba, float **array, int *size)
403 {
404         int a;
405         
406         *size = CM_TABLE+1;
407         *array = MEM_callocN(sizeof(float)*(*size)*4, "ColorBand");
408
409         for(a=0; a<*size; a++)
410                 do_colorband(coba, (float)a/(float)CM_TABLE, &(*array)[a*4]);
411 }
412
413 int vergcband(const void *a1, const void *a2)
414 {
415         const CBData *x1=a1, *x2=a2;
416
417         if( x1->pos > x2->pos ) return 1;
418         else if( x1->pos < x2->pos) return -1;
419         return 0;
420 }
421
422 CBData *colorband_element_add(struct ColorBand *coba, float position)
423 {
424         int a;
425
426         if(coba->tot==MAXCOLORBAND) {
427                 return NULL;
428         }
429         else if(coba->tot > 0) {
430                 CBData *xnew;
431                 float col[4];
432
433                 do_colorband(coba, position, col);
434
435                 xnew = &coba->data[coba->tot];
436                 xnew->pos = position;
437
438                 xnew->r = col[0];
439                 xnew->g = col[1];
440                 xnew->b = col[2];
441                 xnew->a = col[3];
442         }
443
444         coba->tot++;
445         coba->cur = coba->tot-1;
446
447         for(a = 0; a < coba->tot; a++)
448                 coba->data[a].cur = a;
449
450         qsort(coba->data, coba->tot, sizeof(CBData), vergcband);
451
452         for(a = 0; a < coba->tot; a++) {
453                 if(coba->data[a].cur == coba->cur) {
454                         coba->cur = a;
455                         break;
456                 }
457         }
458
459         return coba->data + coba->cur;
460 }
461
462 int colorband_element_remove(struct ColorBand *coba, int index)
463 {
464         int a;
465
466         if(coba->tot < 2)
467                 return 0;
468
469         if(index < 0 || index >= coba->tot)
470                 return 0;
471
472         for(a = index; a < coba->tot; a++) {
473                 coba->data[a] = coba->data[a + 1];
474         }
475         if(coba->cur) coba->cur--;
476         coba->tot--;
477         return 1;
478 }
479
480 /* ******************* TEX ************************ */
481
482 void free_texture(Tex *tex)
483 {
484         free_plugin_tex(tex->plugin);
485         
486         if(tex->coba) MEM_freeN(tex->coba);
487         if(tex->env) BKE_free_envmap(tex->env);
488         if(tex->pd) BKE_free_pointdensity(tex->pd);
489         if(tex->vd) BKE_free_voxeldata(tex->vd);
490         BKE_free_animdata((struct ID *)tex);
491         
492         BKE_previewimg_free(&tex->preview);
493         BKE_icon_delete((struct ID*)tex);
494         tex->id.icon_id = 0;
495         
496         if(tex->nodetree) {
497                 ntreeFreeTree(tex->nodetree);
498                 MEM_freeN(tex->nodetree);
499         }
500 }
501
502 /* ------------------------------------------------------------------------- */
503
504 void default_tex(Tex *tex)
505 {
506         PluginTex *pit;
507         VarStruct *varstr;
508         int a;
509
510         tex->type= TEX_CLOUDS;
511         tex->stype= 0;
512         tex->flag= TEX_CHECKER_ODD;
513         tex->imaflag= TEX_INTERPOL|TEX_MIPMAP|TEX_USEALPHA;
514         tex->extend= TEX_REPEAT;
515         tex->cropxmin= tex->cropymin= 0.0;
516         tex->cropxmax= tex->cropymax= 1.0;
517         tex->texfilter = TXF_EWA;
518         tex->afmax = 8;
519         tex->xrepeat= tex->yrepeat= 1;
520         tex->fie_ima= 2;
521         tex->sfra= 1;
522         tex->frames= 0;
523         tex->offset= 0;
524         tex->noisesize= 0.25;
525         tex->noisedepth= 2;
526         tex->turbul= 5.0;
527         tex->nabla= 0.025;      // also in do_versions
528         tex->bright= 1.0;
529         tex->contrast= 1.0;
530         tex->saturation= 1.0;
531         tex->filtersize= 1.0;
532         tex->rfac= 1.0;
533         tex->gfac= 1.0;
534         tex->bfac= 1.0;
535         /* newnoise: init. */
536         tex->noisebasis = 0;
537         tex->noisebasis2 = 0;
538         /* musgrave */
539         tex->mg_H = 1.0;
540         tex->mg_lacunarity = 2.0;
541         tex->mg_octaves = 2.0;
542         tex->mg_offset = 1.0;
543         tex->mg_gain = 1.0;
544         tex->ns_outscale = 1.0;
545         /* distnoise */
546         tex->dist_amount = 1.0;
547         /* voronoi */
548         tex->vn_w1 = 1.0;
549         tex->vn_w2 = tex->vn_w3 = tex->vn_w4 = 0.0;
550         tex->vn_mexp = 2.5;
551         tex->vn_distm = 0;
552         tex->vn_coltype = 0;
553
554         if (tex->env) {
555                 tex->env->stype=ENV_ANIM;
556                 tex->env->clipsta=0.1;
557                 tex->env->clipend=100;
558                 tex->env->cuberes=600;
559                 tex->env->depth=0;
560         }
561
562         if (tex->pd) {
563                 tex->pd->radius = 0.3f;
564                 tex->pd->falloff_type = TEX_PD_FALLOFF_STD;
565         }
566         
567         if (tex->vd) {
568                 tex->vd->resol[0] = tex->vd->resol[1] = tex->vd->resol[2] = 0;
569                 tex->vd->interp_type=TEX_VD_LINEAR;
570                 tex->vd->file_format=TEX_VD_SMOKE;
571         }
572         pit = tex->plugin;
573         if (pit) {
574                 varstr= pit->varstr;
575                 if(varstr) {
576                         for(a=0; a<pit->vars; a++, varstr++) {
577                                 pit->data[a] = varstr->def;
578                         }
579                 }
580         }
581         
582         tex->iuser.fie_ima= 2;
583         tex->iuser.ok= 1;
584         tex->iuser.frames= 100;
585         tex->iuser.sfra= 1;
586         
587         tex->preview = NULL;
588 }
589
590 void tex_set_type(Tex *tex, int type)
591 {
592         switch(type) {
593                         
594                 case TEX_VOXELDATA:
595                         if (tex->vd == NULL)
596                                 tex->vd = BKE_add_voxeldata();
597                         break;
598                 case TEX_POINTDENSITY:
599                         if (tex->pd == NULL)
600                                 tex->pd = BKE_add_pointdensity();
601                         break;
602                 case TEX_ENVMAP:
603                         if (tex->env == NULL)
604                                 tex->env = BKE_add_envmap();
605                         break;
606         }
607         
608         tex->type = type;
609 }
610
611 /* ------------------------------------------------------------------------- */
612
613 Tex *add_texture(const char *name)
614 {
615         Main *bmain= G.main;
616         Tex *tex;
617
618         tex= alloc_libblock(&bmain->tex, ID_TE, name);
619         
620         default_tex(tex);
621         
622         return tex;
623 }
624
625 /* ------------------------------------------------------------------------- */
626
627 void default_mtex(MTex *mtex)
628 {
629         mtex->texco= TEXCO_ORCO;
630         mtex->mapto= MAP_COL;
631         mtex->object= NULL;
632         mtex->projx= PROJ_X;
633         mtex->projy= PROJ_Y;
634         mtex->projz= PROJ_Z;
635         mtex->mapping= MTEX_FLAT;
636         mtex->ofs[0]= 0.0;
637         mtex->ofs[1]= 0.0;
638         mtex->ofs[2]= 0.0;
639         mtex->size[0]= 1.0;
640         mtex->size[1]= 1.0;
641         mtex->size[2]= 1.0;
642         mtex->tex= NULL;
643         mtex->texflag= MTEX_3TAP_BUMP | MTEX_BUMP_OBJECTSPACE;
644         mtex->colormodel= 0;
645         mtex->r= 1.0;
646         mtex->g= 0.0;
647         mtex->b= 1.0;
648         mtex->k= 1.0;
649         mtex->def_var= 1.0;
650         mtex->blendtype= MTEX_BLEND;
651         mtex->colfac= 1.0;
652         mtex->norfac= 1.0;
653         mtex->varfac= 1.0;
654         mtex->dispfac=0.2;
655         mtex->colspecfac= 1.0f;
656         mtex->mirrfac= 1.0f;
657         mtex->alphafac= 1.0f;
658         mtex->difffac= 1.0f;
659         mtex->specfac= 1.0f;
660         mtex->emitfac= 1.0f;
661         mtex->hardfac= 1.0f;
662         mtex->raymirrfac= 1.0f;
663         mtex->translfac= 1.0f;
664         mtex->ambfac= 1.0f;
665         mtex->colemitfac= 1.0f;
666         mtex->colreflfac= 1.0f;
667         mtex->coltransfac= 1.0f;
668         mtex->densfac= 1.0f;
669         mtex->scatterfac= 1.0f;
670         mtex->reflfac= 1.0f;
671         mtex->shadowfac= 1.0f;
672         mtex->zenupfac= 1.0f;
673         mtex->zendownfac= 1.0f;
674         mtex->blendfac= 1.0f;
675         mtex->timefac= 1.0f;
676         mtex->lengthfac= 1.0f;
677         mtex->clumpfac= 1.0f;
678         mtex->kinkfac= 1.0f;
679         mtex->roughfac= 1.0f;
680         mtex->padensfac= 1.0f;
681         mtex->lifefac= 1.0f;
682         mtex->sizefac= 1.0f;
683         mtex->ivelfac= 1.0f;
684         mtex->dampfac= 1.0f;
685         mtex->gravityfac= 1.0f;
686         mtex->fieldfac= 1.0f;
687         mtex->normapspace= MTEX_NSPACE_TANGENT;
688 }
689
690
691 /* ------------------------------------------------------------------------- */
692
693 MTex *add_mtex(void)
694 {
695         MTex *mtex;
696         
697         mtex= MEM_callocN(sizeof(MTex), "add_mtex");
698         
699         default_mtex(mtex);
700         
701         return mtex;
702 }
703
704 /* slot -1 for first free ID */
705 MTex *add_mtex_id(ID *id, int slot)
706 {
707         MTex **mtex_ar;
708         short act;
709
710         give_active_mtex(id, &mtex_ar, &act);
711
712         if(mtex_ar==NULL) {
713                 return NULL;
714         }
715         
716         if(slot==-1) {
717                 /* find first free */
718                 int i;          
719                 for (i= 0; i < MAX_MTEX; i++) {
720                         if (!mtex_ar[i]) {
721                                 slot= i;
722                                 break;
723                         }
724                 }
725                 if(slot == -1) {
726                         return NULL;
727                 }
728         }
729         else {
730                 /* make sure slot is valid */
731                 if(slot < 0 || slot >= MAX_MTEX) {
732                         return NULL;
733                 }
734         }
735
736         if (mtex_ar[slot]) {
737                 id_us_min((ID *)mtex_ar[slot]->tex);
738                 MEM_freeN(mtex_ar[slot]);
739                 mtex_ar[slot]= NULL;
740         }
741
742         mtex_ar[slot]= add_mtex();
743
744         return mtex_ar[slot];
745 }
746
747 /* ------------------------------------------------------------------------- */
748
749 Tex *copy_texture(Tex *tex)
750 {
751         Tex *texn;
752         
753         texn= copy_libblock(tex);
754         if(texn->type==TEX_IMAGE) id_us_plus((ID *)texn->ima);
755         else texn->ima= NULL;
756         
757         if(texn->plugin) {
758                 texn->plugin= MEM_dupallocN(texn->plugin);
759                 open_plugin_tex(texn->plugin);
760         }
761         
762         if(texn->coba) texn->coba= MEM_dupallocN(texn->coba);
763         if(texn->env) texn->env= BKE_copy_envmap(texn->env);
764         if(texn->pd) texn->pd= BKE_copy_pointdensity(texn->pd);
765         if(texn->vd) texn->vd= MEM_dupallocN(texn->vd);
766         if(tex->preview) texn->preview = BKE_previewimg_copy(tex->preview);
767
768         if(tex->nodetree) {
769                 ntreeEndExecTree(tex->nodetree);
770                 texn->nodetree= ntreeCopyTree(tex->nodetree); 
771         }
772         
773         return texn;
774 }
775
776 /* texture copy without adding to main dbase */
777 Tex *localize_texture(Tex *tex)
778 {
779         Tex *texn;
780         
781         texn= copy_libblock(tex);
782         BLI_remlink(&G.main->tex, texn);
783         
784         /* image texture: free_texture also doesn't decrease */
785         
786         if(texn->plugin) {
787                 texn->plugin= MEM_dupallocN(texn->plugin);
788                 open_plugin_tex(texn->plugin);
789         }
790         
791         if(texn->coba) texn->coba= MEM_dupallocN(texn->coba);
792         if(texn->env) {
793                 texn->env= BKE_copy_envmap(texn->env);
794                 id_us_min(&texn->env->ima->id);
795         }
796         if(texn->pd) texn->pd= BKE_copy_pointdensity(texn->pd);
797         if(texn->vd) {
798                 texn->vd= MEM_dupallocN(texn->vd);
799                 if(texn->vd->dataset)
800                         texn->vd->dataset= MEM_dupallocN(texn->vd->dataset);
801         }
802         
803         texn->preview = NULL;
804         
805         if(tex->nodetree) {
806                 texn->nodetree= ntreeLocalize(tex->nodetree);
807         }
808         
809         return texn;
810 }
811
812
813 /* ------------------------------------------------------------------------- */
814
815 void make_local_texture(Tex *tex)
816 {
817         Main *bmain= G.main;
818         Tex *texn;
819         Material *ma;
820         World *wrld;
821         Lamp *la;
822         Brush *br;
823         ParticleSettings *pa;
824         int a, local=0, lib=0;
825
826         /* - only lib users: do nothing
827                 * - only local users: set flag
828                 * - mixed: make copy
829                 */
830         
831         if(tex->id.lib==NULL) return;
832
833         /* special case: ima always local immediately */
834         if(tex->ima) {
835                 tex->ima->id.lib= NULL;
836                 tex->ima->id.flag= LIB_LOCAL;
837                 new_id(&bmain->image, (ID *)tex->ima, NULL);
838         }
839
840         if(tex->id.us==1) {
841                 tex->id.lib= NULL;
842                 tex->id.flag= LIB_LOCAL;
843                 new_id(&bmain->tex, (ID *)tex, NULL);
844
845                 return;
846         }
847         
848         ma= bmain->mat.first;
849         while(ma) {
850                 for(a=0; a<MAX_MTEX; a++) {
851                         if(ma->mtex[a] && ma->mtex[a]->tex==tex) {
852                                 if(ma->id.lib) lib= 1;
853                                 else local= 1;
854                         }
855                 }
856                 ma= ma->id.next;
857         }
858         la= bmain->lamp.first;
859         while(la) {
860                 for(a=0; a<MAX_MTEX; a++) {
861                         if(la->mtex[a] && la->mtex[a]->tex==tex) {
862                                 if(la->id.lib) lib= 1;
863                                 else local= 1;
864                         }
865                 }
866                 la= la->id.next;
867         }
868         wrld= bmain->world.first;
869         while(wrld) {
870                 for(a=0; a<MAX_MTEX; a++) {
871                         if(wrld->mtex[a] && wrld->mtex[a]->tex==tex) {
872                                 if(wrld->id.lib) lib= 1;
873                                 else local= 1;
874                         }
875                 }
876                 wrld= wrld->id.next;
877         }
878         br= bmain->brush.first;
879         while(br) {
880                 if(br->mtex.tex==tex) {
881                         if(br->id.lib) lib= 1;
882                         else local= 1;
883                 }
884                 br= br->id.next;
885         }
886         pa= bmain->particle.first;
887         while(pa) {
888                 for(a=0; a<MAX_MTEX; a++) {
889                         if(pa->mtex[a] && pa->mtex[a]->tex==tex) {
890                                 if(pa->id.lib) lib= 1;
891                                 else local= 1;
892                         }
893                 }
894                 pa= pa->id.next;
895         }
896         
897         if(local && lib==0) {
898                 tex->id.lib= NULL;
899                 tex->id.flag= LIB_LOCAL;
900                 new_id(&bmain->tex, (ID *)tex, NULL);
901         }
902         else if(local && lib) {
903                 texn= copy_texture(tex);
904                 texn->id.us= 0;
905                 
906                 ma= bmain->mat.first;
907                 while(ma) {
908                         for(a=0; a<MAX_MTEX; a++) {
909                                 if(ma->mtex[a] && ma->mtex[a]->tex==tex) {
910                                         if(ma->id.lib==NULL) {
911                                                 ma->mtex[a]->tex= texn;
912                                                 texn->id.us++;
913                                                 tex->id.us--;
914                                         }
915                                 }
916                         }
917                         ma= ma->id.next;
918                 }
919                 la= bmain->lamp.first;
920                 while(la) {
921                         for(a=0; a<MAX_MTEX; a++) {
922                                 if(la->mtex[a] && la->mtex[a]->tex==tex) {
923                                         if(la->id.lib==NULL) {
924                                                 la->mtex[a]->tex= texn;
925                                                 texn->id.us++;
926                                                 tex->id.us--;
927                                         }
928                                 }
929                         }
930                         la= la->id.next;
931                 }
932                 wrld= bmain->world.first;
933                 while(wrld) {
934                         for(a=0; a<MAX_MTEX; a++) {
935                                 if(wrld->mtex[a] && wrld->mtex[a]->tex==tex) {
936                                         if(wrld->id.lib==NULL) {
937                                                 wrld->mtex[a]->tex= texn;
938                                                 texn->id.us++;
939                                                 tex->id.us--;
940                                         }
941                                 }
942                         }
943                         wrld= wrld->id.next;
944                 }
945                 br= bmain->brush.first;
946                 while(br) {
947                         if(br->mtex.tex==tex) {
948                                 if(br->id.lib==NULL) {
949                                         br->mtex.tex= texn;
950                                         texn->id.us++;
951                                         tex->id.us--;
952                                 }
953                         }
954                         br= br->id.next;
955                 }
956                 pa= bmain->particle.first;
957                 while(pa) {
958                         for(a=0; a<MAX_MTEX; a++) {
959                                 if(pa->mtex[a] && pa->mtex[a]->tex==tex) {
960                                         if(pa->id.lib==NULL) {
961                                                 pa->mtex[a]->tex= texn;
962                                                 texn->id.us++;
963                                                 tex->id.us--;
964                                         }
965                                 }
966                         }
967                         pa= pa->id.next;
968                 }
969         }
970 }
971
972 /* ------------------------------------------------------------------------- */
973
974 void autotexname(Tex *tex)
975 {
976         Main *bmain= G.main;
977         char texstr[20][15]= {"None"  , "Clouds" , "Wood", "Marble", "Magic"  , "Blend",
978                 "Stucci", "Noise"  , "Image", "Plugin", "EnvMap" , "Musgrave",
979                 "Voronoi", "DistNoise", "Point Density", "Voxel Data", "", "", "", ""};
980         Image *ima;
981         char di[FILE_MAXDIR], fi[FILE_MAXFILE];
982         
983         if(tex) {
984                 if(tex->use_nodes) {
985                         new_id(&bmain->tex, (ID *)tex, "Noddy");
986                 }
987                 else
988                 if(tex->type==TEX_IMAGE) {
989                         ima= tex->ima;
990                         if(ima) {
991                                 strcpy(di, ima->name);
992                                 BLI_splitdirstring(di, fi);
993                                 strcpy(di, "I.");
994                                 strcat(di, fi);
995                                 new_id(&bmain->tex, (ID *)tex, di);
996                         }
997                         else new_id(&bmain->tex, (ID *)tex, texstr[tex->type]);
998                 }
999                 else if(tex->type==TEX_PLUGIN && tex->plugin) new_id(&bmain->tex, (ID *)tex, tex->plugin->pname);
1000                 else new_id(&bmain->tex, (ID *)tex, texstr[tex->type]);
1001         }
1002 }
1003
1004 /* ------------------------------------------------------------------------- */
1005
1006 Tex *give_current_object_texture(Object *ob)
1007 {
1008         Material *ma, *node_ma;
1009         Tex *tex= NULL;
1010         
1011         if(ob==NULL) return NULL;
1012         if(ob->totcol==0 && !(ob->type==OB_LAMP)) return NULL;
1013         
1014         if(ob->type==OB_LAMP) {
1015                 tex= give_current_lamp_texture(ob->data);
1016         } else {
1017                 ma= give_current_material(ob, ob->actcol);
1018
1019                 if((node_ma=give_node_material(ma)))
1020                         ma= node_ma;
1021
1022                 tex= give_current_material_texture(ma);
1023         }
1024         
1025         return tex;
1026 }
1027
1028 Tex *give_current_lamp_texture(Lamp *la)
1029 {
1030         MTex *mtex= NULL;
1031         Tex *tex= NULL;
1032
1033         if(la) {
1034                 mtex= la->mtex[(int)(la->texact)];
1035                 if(mtex) tex= mtex->tex;
1036         }
1037
1038         return tex;
1039 }
1040
1041 void set_current_lamp_texture(Lamp *la, Tex *newtex)
1042 {
1043         int act= la->texact;
1044
1045         if(la->mtex[act] && la->mtex[act]->tex)
1046                 id_us_min(&la->mtex[act]->tex->id);
1047
1048         if(newtex) {
1049                 if(!la->mtex[act]) {
1050                         la->mtex[act]= add_mtex();
1051                         la->mtex[act]->texco= TEXCO_GLOB;
1052                 }
1053                 
1054                 la->mtex[act]->tex= newtex;
1055                 id_us_plus(&newtex->id);
1056         }
1057         else if(la->mtex[act]) {
1058                 MEM_freeN(la->mtex[act]);
1059                 la->mtex[act]= NULL;
1060         }
1061 }
1062
1063 bNode *give_current_material_texture_node(Material *ma)
1064 {
1065         if(ma && ma->use_nodes && ma->nodetree)
1066                 return nodeGetActiveID(ma->nodetree, ID_TE);
1067         
1068         return NULL;
1069 }
1070
1071 Tex *give_current_material_texture(Material *ma)
1072 {
1073         MTex *mtex= NULL;
1074         Tex *tex= NULL;
1075         bNode *node;
1076         
1077         if(ma && ma->use_nodes && ma->nodetree) {
1078                 /* first check texture, then material, this works together
1079                    with a hack that clears the active ID flag for textures on
1080                    making a material node active */
1081                 node= nodeGetActiveID(ma->nodetree, ID_TE);
1082
1083                 if(node) {
1084                         tex= (Tex *)node->id;
1085                         ma= NULL;
1086                 }
1087         }
1088
1089         if(ma) {
1090                 mtex= ma->mtex[(int)(ma->texact)];
1091                 if(mtex) tex= mtex->tex;
1092         }
1093         
1094         return tex;
1095 }
1096
1097 int give_active_mtex(ID *id, MTex ***mtex_ar, short *act)
1098 {
1099         switch(GS(id->name)) {
1100         case ID_MA:
1101                 *mtex_ar=               ((Material *)id)->mtex;
1102                 if(act) *act=   (((Material *)id)->texact);
1103                 break;
1104         case ID_WO:
1105                 *mtex_ar=               ((World *)id)->mtex;
1106                 if(act) *act=   (((World *)id)->texact);
1107                 break;
1108         case ID_LA:
1109                 *mtex_ar=               ((Lamp *)id)->mtex;
1110                 if(act) *act=   (((Lamp *)id)->texact);
1111                 break;
1112         case ID_PA:
1113                 *mtex_ar=               ((ParticleSettings *)id)->mtex;
1114                 if(act) *act=   (((ParticleSettings *)id)->texact);
1115                 break;
1116         default:
1117                 *mtex_ar = NULL;
1118                 if(act) *act=   0;
1119                 return FALSE;
1120         }
1121
1122         return TRUE;
1123 }
1124
1125 void set_active_mtex(ID *id, short act)
1126 {
1127         if(act<0)                               act= 0;
1128         else if(act>=MAX_MTEX)  act= MAX_MTEX-1;
1129
1130         switch(GS(id->name)) {
1131         case ID_MA:
1132                 ((Material *)id)->texact= act;
1133                 break;
1134         case ID_WO:
1135                 ((World *)id)->texact= act;
1136                 break;
1137         case ID_LA:
1138                 ((Lamp *)id)->texact= act;
1139                 break;
1140         case ID_PA:
1141                 ((ParticleSettings *)id)->texact= act;
1142                 break;
1143         }
1144 }
1145
1146 void set_current_material_texture(Material *ma, Tex *newtex)
1147 {
1148         Tex *tex= NULL;
1149         bNode *node;
1150         
1151         if(ma && ma->use_nodes && ma->nodetree) {
1152                 node= nodeGetActiveID(ma->nodetree, ID_TE);
1153
1154                 if(node) {
1155                         tex= (Tex *)node->id;
1156                         id_us_min(&tex->id);
1157                         node->id= &newtex->id;
1158                         id_us_plus(&newtex->id);
1159                         ma= NULL;
1160                 }
1161         }
1162         if(ma) {
1163                 int act= (int)ma->texact;
1164
1165                 tex= (ma->mtex[act])? ma->mtex[act]->tex: NULL;
1166                 id_us_min(&tex->id);
1167
1168                 if(newtex) {
1169                         if(!ma->mtex[act])
1170                                 ma->mtex[act]= add_mtex();
1171                         
1172                         ma->mtex[act]->tex= newtex;
1173                         id_us_plus(&newtex->id);
1174                 }
1175                 else if(ma->mtex[act]) {
1176                         MEM_freeN(ma->mtex[act]);
1177                         ma->mtex[act]= NULL;
1178                 }
1179         }
1180 }
1181
1182 int has_current_material_texture(Material *ma)
1183 {
1184         bNode *node;
1185
1186         if(ma && ma->use_nodes && ma->nodetree) {
1187                 node= nodeGetActiveID(ma->nodetree, ID_TE);
1188
1189                 if(node)
1190                         return 1;
1191         }
1192
1193         return (ma != NULL);
1194 }
1195
1196 Tex *give_current_world_texture(World *world)
1197 {
1198         MTex *mtex= NULL;
1199         Tex *tex= NULL;
1200         
1201         if(!world) return NULL;
1202         
1203         mtex= world->mtex[(int)(world->texact)];
1204         if(mtex) tex= mtex->tex;
1205         
1206         return tex;
1207 }
1208
1209 void set_current_world_texture(World *wo, Tex *newtex)
1210 {
1211         int act= wo->texact;
1212
1213         if(wo->mtex[act] && wo->mtex[act]->tex)
1214                 id_us_min(&wo->mtex[act]->tex->id);
1215
1216         if(newtex) {
1217                 if(!wo->mtex[act]) {
1218                         wo->mtex[act]= add_mtex();
1219                         wo->mtex[act]->texco= TEXCO_VIEW;
1220                 }
1221                 
1222                 wo->mtex[act]->tex= newtex;
1223                 id_us_plus(&newtex->id);
1224         }
1225         else if(wo->mtex[act]) {
1226                 MEM_freeN(wo->mtex[act]);
1227                 wo->mtex[act]= NULL;
1228         }
1229 }
1230
1231 Tex *give_current_brush_texture(Brush *br)
1232 {
1233         return br->mtex.tex;
1234 }
1235
1236 void set_current_brush_texture(Brush *br, Tex *newtex)
1237 {
1238         if(br->mtex.tex)
1239                 id_us_min(&br->mtex.tex->id);
1240
1241         if(newtex) {
1242                 br->mtex.tex= newtex;
1243                 id_us_plus(&newtex->id);
1244         }
1245 }
1246
1247 Tex *give_current_particle_texture(ParticleSettings *part)
1248 {
1249         MTex *mtex= NULL;
1250         Tex *tex= NULL;
1251         
1252         if(!part) return NULL;
1253         
1254         mtex= part->mtex[(int)(part->texact)];
1255         if(mtex) tex= mtex->tex;
1256         
1257         return tex;
1258 }
1259
1260 void set_current_particle_texture(ParticleSettings *part, Tex *newtex)
1261 {
1262         int act= part->texact;
1263
1264         if(part->mtex[act] && part->mtex[act]->tex)
1265                 id_us_min(&part->mtex[act]->tex->id);
1266
1267         if(newtex) {
1268                 if(!part->mtex[act]) {
1269                         part->mtex[act]= add_mtex();
1270                         part->mtex[act]->texco= TEXCO_ORCO;
1271                         part->mtex[act]->blendtype= MTEX_MUL;
1272                 }
1273                 
1274                 part->mtex[act]->tex= newtex;
1275                 id_us_plus(&newtex->id);
1276         }
1277         else if(part->mtex[act]) {
1278                 MEM_freeN(part->mtex[act]);
1279                 part->mtex[act]= NULL;
1280         }
1281 }
1282
1283 /* ------------------------------------------------------------------------- */
1284
1285 EnvMap *BKE_add_envmap(void)
1286 {
1287         EnvMap *env;
1288         
1289         env= MEM_callocN(sizeof(EnvMap), "envmap");
1290         env->type= ENV_CUBE;
1291         env->stype= ENV_ANIM;
1292         env->clipsta= 0.1;
1293         env->clipend= 100.0;
1294         env->cuberes= 600;
1295         env->viewscale = 0.5;
1296         
1297         return env;
1298
1299
1300 /* ------------------------------------------------------------------------- */
1301
1302 EnvMap *BKE_copy_envmap(EnvMap *env)
1303 {
1304         EnvMap *envn;
1305         int a;
1306         
1307         envn= MEM_dupallocN(env);
1308         envn->ok= 0;
1309         for(a=0; a<6; a++) envn->cube[a]= NULL;
1310         if(envn->ima) id_us_plus((ID *)envn->ima);
1311         
1312         return envn;
1313 }
1314
1315 /* ------------------------------------------------------------------------- */
1316
1317 void BKE_free_envmapdata(EnvMap *env)
1318 {
1319         unsigned int part;
1320         
1321         for(part=0; part<6; part++) {
1322                 if(env->cube[part])
1323                         IMB_freeImBuf(env->cube[part]);
1324                 env->cube[part]= NULL;
1325         }
1326         env->ok= 0;
1327 }
1328
1329 /* ------------------------------------------------------------------------- */
1330
1331 void BKE_free_envmap(EnvMap *env)
1332 {
1333         
1334         BKE_free_envmapdata(env);
1335         MEM_freeN(env);
1336         
1337 }
1338
1339 /* ------------------------------------------------------------------------- */
1340
1341 PointDensity *BKE_add_pointdensity(void)
1342 {
1343         PointDensity *pd;
1344         
1345         pd= MEM_callocN(sizeof(PointDensity), "pointdensity");
1346         pd->flag = 0;
1347         pd->radius = 0.3f;
1348         pd->falloff_type = TEX_PD_FALLOFF_STD;
1349         pd->falloff_softness = 2.0;
1350         pd->source = TEX_PD_PSYS;
1351         pd->point_tree = NULL;
1352         pd->point_data = NULL;
1353         pd->noise_size = 0.5f;
1354         pd->noise_depth = 1;
1355         pd->noise_fac = 1.0f;
1356         pd->noise_influence = TEX_PD_NOISE_STATIC;
1357         pd->coba = add_colorband(1);
1358         pd->speed_scale = 1.0f;
1359         pd->totpoints = 0;
1360         pd->object = NULL;
1361         pd->psys = 0;
1362         pd->psys_cache_space= TEX_PD_WORLDSPACE;
1363         pd->falloff_curve = curvemapping_add(1, 0, 0, 1, 1);
1364
1365         pd->falloff_curve->preset = CURVE_PRESET_LINE;
1366         pd->falloff_curve->cm->flag &= ~CUMA_EXTEND_EXTRAPOLATE;
1367         curvemap_reset(pd->falloff_curve->cm, &pd->falloff_curve->clipr, pd->falloff_curve->preset, CURVEMAP_SLOPE_POSITIVE);
1368         curvemapping_changed(pd->falloff_curve, 0);
1369
1370         return pd;
1371
1372
1373 PointDensity *BKE_copy_pointdensity(PointDensity *pd)
1374 {
1375         PointDensity *pdn;
1376
1377         pdn= MEM_dupallocN(pd);
1378         pdn->point_tree = NULL;
1379         pdn->point_data = NULL;
1380         if(pdn->coba) pdn->coba= MEM_dupallocN(pdn->coba);
1381         pdn->falloff_curve = curvemapping_copy(pdn->falloff_curve); /* can be NULL */
1382         return pdn;
1383 }
1384
1385 void BKE_free_pointdensitydata(PointDensity *pd)
1386 {
1387         if (pd->point_tree) {
1388                 BLI_bvhtree_free(pd->point_tree);
1389                 pd->point_tree = NULL;
1390         }
1391         if (pd->point_data) {
1392                 MEM_freeN(pd->point_data);
1393                 pd->point_data = NULL;
1394         }
1395         if(pd->coba) {
1396                 MEM_freeN(pd->coba);
1397                 pd->coba = NULL;
1398         }
1399
1400         curvemapping_free(pd->falloff_curve); /* can be NULL */
1401 }
1402
1403 void BKE_free_pointdensity(PointDensity *pd)
1404 {
1405         BKE_free_pointdensitydata(pd);
1406         MEM_freeN(pd);
1407 }
1408
1409
1410 void BKE_free_voxeldatadata(struct VoxelData *vd)
1411 {
1412         if (vd->dataset) {
1413                 MEM_freeN(vd->dataset);
1414                 vd->dataset = NULL;
1415         }
1416
1417 }
1418  
1419 void BKE_free_voxeldata(struct VoxelData *vd)
1420 {
1421         BKE_free_voxeldatadata(vd);
1422         MEM_freeN(vd);
1423 }
1424  
1425 struct VoxelData *BKE_add_voxeldata(void)
1426 {
1427         VoxelData *vd;
1428
1429         vd= MEM_callocN(sizeof(struct VoxelData), "voxeldata");
1430         vd->dataset = NULL;
1431         vd->resol[0] = vd->resol[1] = vd->resol[2] = 1;
1432         vd->interp_type= TEX_VD_LINEAR;
1433         vd->file_format= TEX_VD_SMOKE;
1434         vd->int_multiplier = 1.0;
1435         vd->extend = TEX_CLIP;
1436         vd->object = NULL;
1437         vd->cachedframe = -1;
1438         vd->ok = 0;
1439         
1440         return vd;
1441  }
1442  
1443 struct VoxelData *BKE_copy_voxeldata(struct VoxelData *vd)
1444 {
1445         VoxelData *vdn;
1446
1447         vdn= MEM_dupallocN(vd); 
1448         vdn->dataset = NULL;
1449
1450         return vdn;
1451 }
1452
1453
1454 /* ------------------------------------------------------------------------- */
1455 int BKE_texture_dependsOnTime(const struct Tex *texture)
1456 {
1457         if(texture->plugin) {
1458                 // assume all plugins depend on time
1459                 return 1;
1460         } 
1461         else if(        texture->ima && 
1462                         ELEM(texture->ima->source, IMA_SRC_SEQUENCE, IMA_SRC_MOVIE)) {
1463                 return 1;
1464         }
1465         else if(texture->adt) {
1466                 // assume anything in adt means the texture is animated
1467                 return 1;
1468         }
1469         else if(texture->type == TEX_NOISE) {
1470                 // noise always varies with time
1471                 return 1;
1472         }
1473         return 0;
1474 }
1475
1476 /* ------------------------------------------------------------------------- */