summaryrefslogtreecommitdiff
path: root/src/lib/evas/canvas/evas_canvas3d_scene.c
blob: b67d451f5248aa9a632e76ece5cee83fff3ffd47 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
#include "evas_common_private.h"
#include "evas_private.h"

#define MY_CLASS EVAS_CANVAS3D_SCENE_CLASS

void
evas_canvas3d_scene_data_init(Evas_Canvas3D_Scene_Public_Data *data)
{
   data->camera_node = NULL;
   data->light_nodes = NULL;
   data->mesh_nodes = NULL;
   data->node_mesh_colors = NULL;
   data->colors_node_mesh = NULL;
   data->render_to_texture = EINA_FALSE;
   data->lod_distance = 0;
   data->post_processing = EINA_FALSE;
   data->post_processing_type = EVAS_CANVAS3D_SHADER_MODE_POST_PROCESSING_FXAA;
}

void
evas_canvas3d_scene_data_fini(Evas_Canvas3D_Scene_Public_Data *data)
{
   if (data->light_nodes)
     eina_list_free(data->light_nodes);

   if (data->mesh_nodes)
     eina_list_free(data->mesh_nodes);
}

EOLIAN static void
_evas_canvas3d_scene_evas_canvas3d_object_change_notify(Eo *eo_obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd,
                                            Evas_Canvas3D_State state EINA_UNUSED,
                                            Evas_Canvas3D_Object *ref EINA_UNUSED)
{
   Eina_List *l;
   Evas_Object *eo;

   EINA_LIST_FOREACH(pd->images, l, eo)
     {
        Evas_Object_Protected_Data *obj = eo_data_scope_get(eo, EFL_CANVAS_OBJECT_CLASS);
        evas_object_change(eo, obj);
     }
}

EOLIAN static void
_evas_canvas3d_scene_evas_canvas3d_object_update_notify(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd)
{
   if (pd->root_node)
     {
        evas_canvas3d_object_update(pd->root_node);
     }

   if (pd->camera_node)
     {
        evas_canvas3d_object_update(pd->camera_node);
     }

   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_UPDATED, NULL);
}

EAPI Evas_Canvas3D_Scene *
evas_canvas3d_scene_add(Evas *e)
{
   MAGIC_CHECK(e, Evas, MAGIC_EVAS);
   return NULL;
   MAGIC_CHECK_END();
   Evas_Object *eo_obj = eo_add(MY_CLASS, e);
   return eo_obj;
}

EOLIAN static Eo *
_evas_canvas3d_scene_eo_base_constructor(Eo *obj, Evas_Canvas3D_Scene_Data *pd)
{
   obj = eo_constructor(eo_super(obj, MY_CLASS));
   evas_canvas3d_object_type_set(obj, EVAS_CANVAS3D_OBJECT_TYPE_SCENE);
   evas_color_set(&pd->bg_color, 0.0, 0.0, 0.0, 0.0);
   pd->shadows_enabled = EINA_FALSE;
   pd->color_pick_enabled = EINA_FALSE;
   pd->node_mesh_colors = NULL;
   pd->colors_node_mesh = NULL;
   pd->depth_offset = 4.0;
   pd->depth_constant = 100.0;
   return obj;
}

EOLIAN static void
_evas_canvas3d_scene_root_node_set(Eo *obj, Evas_Canvas3D_Scene_Data *pd, Evas_Canvas3D_Node *node)
{
   if (pd->root_node == node)
     return;

   if (pd->root_node)
     {
        evas_canvas3d_node_scene_root_del(pd->root_node, obj);
        eo_unref(pd->root_node);
     }

   pd->root_node = node;

   if (node)
     {
        eo_ref(node);
        evas_canvas3d_node_scene_root_add(node, obj);
     }

   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_ROOT_NODE, NULL);
}

EOLIAN static Evas_Canvas3D_Node *
_evas_canvas3d_scene_root_node_get(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd)
{
   return pd->root_node;
}

EOLIAN static void
_evas_canvas3d_scene_camera_node_set(Eo *obj, Evas_Canvas3D_Scene_Data *pd, Evas_Canvas3D_Node *node)
{
   if (pd->camera_node == node)
     return;

   if (pd->camera_node)
     {
        evas_canvas3d_node_scene_camera_del(pd->camera_node, obj);
     }

   pd->camera_node = node;

   if (node)
     {
        evas_canvas3d_node_scene_camera_add(node, obj);
     }

   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_CAMERA_NODE, NULL);
}

EOLIAN static Evas_Canvas3D_Node *
_evas_canvas3d_scene_camera_node_get(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd)
{
   return pd->camera_node;
}

EOLIAN static void
_evas_canvas3d_scene_size_set(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd, int w, int h)
{
   pd->w = w;
   pd->h = h;
   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_SIZE, NULL);
}

EOLIAN static void
_evas_canvas3d_scene_size_get(const Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd, int *w, int *h)
{
   if (w) *w = pd->w;
   if (h) *h = pd->h;
}

EOLIAN static void
_evas_canvas3d_scene_background_color_set(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd,
                                   Evas_Real r, Evas_Real g, Evas_Real b, Evas_Real a)
{
   evas_color_set(&pd->bg_color, r, g, b, a);
   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_BACKGROUND_COLOR, NULL);
}

EOLIAN static void
_evas_canvas3d_scene_background_color_get(const Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd,
                                   Evas_Real *r, Evas_Real *g, Evas_Real *b, Evas_Real *a)
{
   if (r) *r = pd->bg_color.r;
   if (g) *g = pd->bg_color.g;
   if (b) *b = pd->bg_color.b;
   if (a) *a = pd->bg_color.a;
}

static inline Eina_Bool
_pick_data_triangle_add(Evas_Canvas3D_Pick_Data *data, const Evas_Ray3 *ray,
                        const Evas_Triangle3 *tri)
{
   Eina_Vector3   e1, e2, tvec, pvec, qvec;
   Evas_Real   det, inv_det, u, v, t;

   eina_vector3_subtract(&e1, &tri->p1, &tri->p0);
   eina_vector3_subtract(&e2, &tri->p2, &tri->p0);

   eina_vector3_cross_product(&pvec, &ray->dir, &e2);
   det = eina_vector3_dot_product(&e1, &pvec);

   /* If determinant is near zero, ray lies in plane of triangle. */
   if (det > -0.0000001 && det < 0.0000001)
     return EINA_FALSE;

   inv_det = 1.0 / det;

   /* Calculate distance from p0 to ray origin. */
   eina_vector3_subtract(&tvec, &ray->org, &tri->p0);

   /* Calculate U parameter and test bounds. */
   u = eina_vector3_dot_product(&tvec, &pvec) * inv_det;

   if (u < 0.0 || u > 1.0)
     return EINA_FALSE;

   /* Prepare to tst V parameter. */
   eina_vector3_cross_product(&qvec, &tvec, &e1);

   /* Calculate V parameter and test bounds. */
   v = eina_vector3_dot_product(&ray->dir, &qvec) * inv_det;

   if (v < 0.0 || u + v > 1.0)
     return EINA_FALSE;

   /* Calculate T parameter and test bounds. */
   t = eina_vector3_dot_product(&e2, &qvec) * inv_det;

   if (t >= 0.0 && t <= 1.0)
     {
        if (!data->picked || t < data->z)
          {
             data->picked = EINA_TRUE;
             data->z = t;
             data->u = u;
             data->v = v;
             return EINA_TRUE;
          }
     }

   return EINA_FALSE;
}

static inline void
_pick_data_texcoord_update(Evas_Canvas3D_Pick_Data *data,
                           const Evas_Canvas3D_Vertex_Buffer *tex0, const Evas_Canvas3D_Vertex_Buffer *tex1,
                           Evas_Real weight, unsigned int i0, unsigned int i1, unsigned int i2)
{
   Evas_Real s0, s1, s2;
   Evas_Real t0, t1, t2;

   if (tex1->data == NULL)
     {
        float *ptr;

        ptr = (float *)((char *)tex0->data + tex0->stride * i0);

        s0 = ptr[0];
        t0 = ptr[1];

        ptr = (float *)((char *)tex0->data + tex0->stride * i1);

        s1 = ptr[0];
        t1 = ptr[1];

        ptr = (float *)((char *)tex0->data + tex0->stride * i2);

        s2 = ptr[0];
        t2 = ptr[1];
     }
   else
     {
        float *ptr0, *ptr1;

        ptr0 = (float *)((char *)tex0->data + tex0->stride * i0);
        ptr1 = (float *)((char *)tex1->data + tex1->stride * i0);

        s0 = ptr0[0] * weight + ptr1[0] * (1.0 - weight);
        t0 = ptr0[1] * weight + ptr1[1] * (1.0 - weight);

        ptr0 = (float *)((char *)tex0->data + tex0->stride * i1);
        ptr1 = (float *)((char *)tex1->data + tex1->stride * i1);

        s1 = ptr0[0] * weight + ptr1[0] * (1.0 - weight);
        t1 = ptr0[1] * weight + ptr1[1] * (1.0 - weight);

        ptr0 = (float *)((char *)tex0->data + tex0->stride * i2);
        ptr1 = (float *)((char *)tex1->data + tex1->stride * i2);

        s2 = ptr0[0] * weight + ptr1[0] * (1.0 - weight);
        t2 = ptr0[1] * weight + ptr1[1] * (1.0 - weight);
     }

   data->s = s0 * (1 - data->u - data->v) + s1 * data->u + s2 * data->v;
   data->t = t0 * (1 - data->u - data->v) + t1 * data->u + t2 * data->v;
}


static inline Eina_Bool
_pick_data_mesh_add(Evas_Canvas3D_Pick_Data *data, const Evas_Ray3 *ray,
                    Evas_Canvas3D_Mesh *mesh, int frame, Evas_Canvas3D_Node *node)
{
   Evas_Canvas3D_Vertex_Buffer   pos0, pos1, tex0, tex1;
   Evas_Real               pos_weight, tex_weight;
   Evas_Triangle3          tri;
   int                     i;

   memset(&pos0, 0x00, sizeof(Evas_Canvas3D_Vertex_Buffer));
   memset(&pos1, 0x00, sizeof(Evas_Canvas3D_Vertex_Buffer));
   memset(&tex0, 0x00, sizeof(Evas_Canvas3D_Vertex_Buffer));
   memset(&tex1, 0x00, sizeof(Evas_Canvas3D_Vertex_Buffer));

   evas_canvas3d_mesh_interpolate_vertex_buffer_get(mesh, frame, EVAS_CANVAS3D_VERTEX_ATTRIB_POSITION,
                                              &pos0, &pos1, &pos_weight);

   evas_canvas3d_mesh_interpolate_vertex_buffer_get(mesh, frame, EVAS_CANVAS3D_VERTEX_ATTRIB_TEXCOORD,
                                              &tex0, &tex1, &tex_weight);
   Evas_Canvas3D_Mesh_Data *pdmesh = eo_data_scope_get(mesh, EVAS_CANVAS3D_MESH_CLASS);
   if (pdmesh->indices)
     {
        unsigned int i0, i1, i2;

        if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLES)
          {
             for (i = 0; i < pdmesh->index_count; i += 3)
               {
                  if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
                    {
                       i0 = ((unsigned short *)pdmesh->indices)[i];
                       i1 = ((unsigned short *)pdmesh->indices)[i + 1];
                       i2 = ((unsigned short *)pdmesh->indices)[i + 2];
                    }
                  else
                    {
                       i0 = ((unsigned char *)pdmesh->indices)[i];
                       i1 = ((unsigned char *)pdmesh->indices)[i + 1];
                       i2 = ((unsigned char *)pdmesh->indices)[i + 2];
                    }

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, i0);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, i1);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i0, i1, i2);
                       data->mesh = mesh;
                       data->node = node;
                       return EINA_TRUE;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_STRIP)
          {
             if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
               {
                  i1 = ((unsigned short *)pdmesh->indices)[0];
                  i2 = ((unsigned short *)pdmesh->indices)[1];
               }
             else
               {
                  i1 = ((unsigned char *)pdmesh->indices)[0];
                  i2 = ((unsigned char *)pdmesh->indices)[1];
               }

             evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, i1);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i2);

             for (i = 0; i < pdmesh->index_count - 2; i++)
               {
                  tri.p0 = tri.p1;
                  tri.p1 = tri.p2;

                  if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
                    i2 = ((unsigned short *)pdmesh->indices)[i + 2];
                  else
                    i2 = ((unsigned char *)pdmesh->indices)[i + 2];

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
                         {
                            i0 = ((unsigned short *)pdmesh->indices)[i];
                            i1 = ((unsigned short *)pdmesh->indices)[i + 1];
                         }
                       else
                         {
                            i0 = ((unsigned char *)pdmesh->indices)[i];
                            i1 = ((unsigned char *)pdmesh->indices)[i + 1];
                         }

                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i0, i1, i2);
                       data->mesh = mesh;
                       data->node = node;
                       return EINA_TRUE;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_FAN)
          {
             if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
               {
                  i0 = ((unsigned short *)pdmesh->indices)[0];
                  i2 = ((unsigned short *)pdmesh->indices)[1];
               }
             else
               {
                  i0 = ((unsigned char *)pdmesh->indices)[0];
                  i2 = ((unsigned char *)pdmesh->indices)[1];
               }

             evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, i0);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i2);

             for (i = 1; i < pdmesh->index_count - 1; i++)
               {
                  tri.p1 = tri.p2;

                  if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
                    i2 = ((unsigned short *)pdmesh->indices)[i + 1];
                  else
                    i2 = ((unsigned char *)pdmesh->indices)[i + 1];

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_SHORT)
                         i1 = ((unsigned short *)pdmesh->indices)[i];
                       else
                         i1 = ((unsigned char *)pdmesh->indices)[i];

                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i0, i1, i2);
                       data->mesh = mesh;
                       data->node = node;
                    }
               }
          }
     }
   else if (pdmesh->index_format == EVAS_CANVAS3D_INDEX_FORMAT_UNSIGNED_BYTE)
     {
        if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLES)
          {
             for (i = 0; i < pdmesh->index_count; i += 3)
               {
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, i);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, i + 1);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i, i + 1, i + 2);
                       data->mesh = mesh;
                       data->node = node;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_STRIP)
          {
             evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, 0);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, 1);

             for (i = 0; i < pdmesh->index_count - 2; i++)
               {
                  tri.p0 = tri.p1;
                  tri.p1 = tri.p2;

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i, i + 1, i + 2);
                       data->mesh = mesh;
                       data->node = node;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_FAN)
          {
             evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, 0);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, 1);

             for (i = 1; i < pdmesh->index_count - 1; i++)
               {
                  tri.p1 = tri.p2;

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 1);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                      if (tex0.data)
                        _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, 0, i, i + 1);
                       data->mesh = mesh;
                       data->node = node;
                    }
               }
          }
     }
   else if (pdmesh->index_count == 0.0 && pdmesh->vertex_count != 0)
     {
        if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLES)
          {
             for (i = 0; i < pdmesh->vertex_count; i += 3)
               {
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, i);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, i + 1);
                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i, i + 1, i + 2);
                       data->mesh = mesh;
                       data->node = node;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_STRIP)
          {
             evas_canvas3d_mesh_interpolate_position_get(&tri.p1, &pos0, &pos1, pos_weight, 0);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, 1);

             for (i = 0; i < pdmesh->vertex_count - 2; i++)
               {
                  tri.p0 = tri.p1;
                  tri.p1 = tri.p2;

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 2);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                      if (tex0.data)
                        _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, i, i + 1, i + 2);
                       data->mesh = mesh;
                       data->node = node;
                       return EINA_TRUE;
                    }
               }
          }
        else if (pdmesh->assembly == EVAS_CANVAS3D_VERTEX_ASSEMBLY_TRIANGLE_FAN)
          {
             evas_canvas3d_mesh_interpolate_position_get(&tri.p0, &pos0, &pos1, pos_weight, 0);
             evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, 1);

             for (i = 1; i < pdmesh->vertex_count - 1; i++)
               {
                  tri.p1 = tri.p2;

                  evas_canvas3d_mesh_interpolate_position_get(&tri.p2, &pos0, &pos1, pos_weight, i + 1);

                  if (_pick_data_triangle_add(data, ray, &tri))
                    {
                       if (tex0.data)
                         _pick_data_texcoord_update(data, &tex0, &tex1, tex_weight, 0, i, i + 1);
                       data->mesh = mesh;
                       data->node = node;
                       return EINA_TRUE;
                    }
               }
          }
     }
   return EINA_FALSE;
}

Eina_Bool
_node_pick(Evas_Canvas3D_Node *node, void *data)
{
   Evas_Ray3            ray;
   Evas_Canvas3D_Pick_Data   *pick = (Evas_Canvas3D_Pick_Data *)data;
   Eina_Matrix4            mvp;
   Evas_Canvas3D_Node_Data *pd_node = eo_data_scope_get(node, EVAS_CANVAS3D_NODE_CLASS);

   evas_canvas3d_node_tree_traverse(node, EVAS_CANVAS3D_TREE_TRAVERSE_POST_ORDER, EINA_FALSE,
                                 node_aabb_update, NULL);

   if (! evas_box3_ray3_intersect(&pd_node->aabb, &pick->ray_world))
     {
        /* Skip entire subtree. */
        return EINA_FALSE;
     }

   if (pd_node->type == EVAS_CANVAS3D_NODE_TYPE_MESH)
     {
        Eina_Iterator *itr;
        void          *ptr;

        /* Transform ray into local coordinate space. */
        eina_matrix4_multiply(&mvp, &pick->matrix_vp, &pd_node->data.mesh.matrix_local_to_world);
        evas_ray3_init(&ray, pick->x, pick->y, &mvp);

        itr = eina_hash_iterator_data_new(pd_node->data.mesh.node_meshes);

        while (eina_iterator_next(itr, &ptr))
          {
             Evas_Canvas3D_Node_Mesh *nm = (Evas_Canvas3D_Node_Mesh *)ptr;
             if(_pick_data_mesh_add(pick, &ray, nm->mesh, nm->frame, node))
               break;
          }
     }

   return EINA_TRUE;
}

static void _node_mesh_colors_free_cb(void *data)
{
   if (data) free(data);
}

static inline void
_pick_data_init(Evas_Canvas3D_Pick_Data *data, Evas_Public_Data *e, Evas_Real x, Evas_Real y)
{
   data->x      = ((x * 2.0) / ((Evas_Real)e->viewport.w)) - 1.0;
   data->y      = ((((Evas_Real)e->viewport.h - y - 1) * 2.0) / ((Evas_Real)e->viewport.h)) - 1.0;
   data->picked = EINA_FALSE;
   data->z      = 1.0;
   data->node   = NULL;
   data->mesh   = NULL;
   data->s      = 0.0;
   data->t      = 0.0;
}

EOLIAN static Eina_Bool
_evas_canvas3d_scene_pick(const Eo *obj, Evas_Canvas3D_Scene_Data *pd, Evas_Real x, Evas_Real y,
                    Evas_Canvas3D_Node **node, Evas_Canvas3D_Mesh **mesh,
                    Evas_Real *s, Evas_Real *t)
{
   Evas_Canvas3D_Pick_Data data;
   Evas_Canvas3D_Node_Data *pd_camera_node;
   Evas_Canvas3D_Camera_Data *pd_camera;
   Evas_Canvas3D_Object_Data *pd_parent;
   Evas_Public_Data *e;
   int tex = 0, px, py;;
   Evas_Color color = {0.0, 0.0, 0.0, 0.0};
   Eina_Stringshare *tmp;
   Eina_Array *arr = NULL;
   Eina_Bool update_scene = EINA_FALSE;
   Evas_Canvas3D_Node *picked_node = NULL;
   const Eo_Event_Description *eo_desc = NULL;

   pd_parent = eo_data_scope_get(obj, EVAS_CANVAS3D_OBJECT_CLASS);
   e = eo_data_scope_get(pd_parent->evas, EVAS_CANVAS_CLASS);

   _pick_data_init(&data, e, x, y);
   px = round(x * pd->w / e->viewport.w);
   py = round((pd->h - (y * pd->h / e->viewport.h) - 1));

   /*Use color pick mechanism finding node and mesh*/
   if (pd->color_pick_enabled)
     {
        Evas_Canvas3D_Scene_Public_Data scene_data;

        scene_data.bg_color = pd->bg_color;
        scene_data.shadows_enabled = pd->shadows_enabled;
        scene_data.camera_node = pd->camera_node;
        scene_data.color_pick_enabled = pd->color_pick_enabled;
        update_scene = evas_canvas3d_object_dirty_get(obj, EVAS_CANVAS3D_STATE_SCENE_UPDATED);
        scene_data.post_processing = EINA_FALSE;
        if (update_scene)
          {
             if (pd->node_mesh_colors)
               {
                  eina_hash_free(pd->node_mesh_colors);
                  eina_hash_free(pd->colors_node_mesh);
                  pd->node_mesh_colors = NULL;
                  pd->colors_node_mesh = NULL;
               }
             pd->node_mesh_colors = eina_hash_stringshared_new(_node_mesh_colors_free_cb);
             pd->colors_node_mesh = eina_hash_stringshared_new(_node_mesh_colors_free_cb);
          }
        scene_data.node_mesh_colors = pd->node_mesh_colors;
        scene_data.colors_node_mesh = pd->colors_node_mesh;
        evas_canvas3d_node_tree_traverse(pd->root_node,
                                   EVAS_CANVAS3D_TREE_TRAVERSE_LEVEL_ORDER, EINA_TRUE,
                                   evas_canvas3d_node_color_node_mesh_collect, &scene_data);

        if (e->engine.func->drawable_scene_render_to_texture)
          {
             if (e->engine.func->drawable_scene_render_to_texture(e->engine.data.output,
                                                         pd->surface, &scene_data))
               {
                  if (e->engine.func->drawable_texture_color_pick_id_get)
                    tex = e->engine.func->drawable_texture_color_pick_id_get(pd->surface);
                  if (e->engine.func->drawable_texture_pixel_color_get)
                    {
                       e->engine.func->drawable_texture_pixel_color_get(tex, px, py, &color, pd->surface);
                       tmp = eina_stringshare_printf("%f %f %f", color.r, color.g, color.b);
                       arr = (Eina_Array *)eina_hash_find(pd->colors_node_mesh, tmp);
                       if (arr)
                         {
                            picked_node = (Evas_Canvas3D_Node *)eina_array_data_get(arr, 0);
                            if (mesh) *mesh = (Evas_Canvas3D_Mesh *)eina_array_data_get(arr, 1);
                            if (node) *node = picked_node;
                            eina_stringshare_del(tmp);

                            /*Calling callback clicked*/
                            eo_desc = eo_base_legacy_only_event_description_get("clicked,private");
                            eo_event_callback_call(picked_node, eo_desc, picked_node);

                            return EINA_TRUE;
                         }
                       else
                         {
                            eina_stringshare_del(tmp);
                            if (mesh) *mesh = NULL;
                            if (node) *node = NULL;
                         }
                    }
               }
          }
        return EINA_FALSE;
     }
   /* Update the scene graph. */
   evas_canvas3d_object_update((Eo *) obj);
   pd_camera_node = eo_data_scope_get(pd->camera_node, EVAS_CANVAS3D_NODE_CLASS);
   pd_camera = eo_data_scope_get(pd_camera_node->data.camera.camera, EVAS_CANVAS3D_CAMERA_CLASS);
   eina_matrix4_multiply(&data.matrix_vp,
                      &pd_camera->projection,
                      &pd_camera_node->data.camera.matrix_world_to_eye);

   evas_ray3_init(&data.ray_world, data.x, data.y, &data.matrix_vp);

   /* Traverse tree while adding meshes into pick data structure. */
   evas_canvas3d_node_tree_traverse(pd->root_node, EVAS_CANVAS3D_TREE_TRAVERSE_LEVEL_ORDER, EINA_TRUE,
                              _node_pick, &data);

   if (!data.picked)
       return EINA_FALSE;

   if (s)     *s     = data.s;
   if (t)     *t     = data.t;
   if (node)  *node  = data.node;
   if (mesh)  *mesh  = data.mesh;

   /*Calling callback clicked*/
   eo_desc = eo_base_legacy_only_event_description_get("clicked,private");
   eo_event_callback_call(data.node, eo_desc, data.node);

   return EINA_TRUE;
}

EOLIAN static Evas_Canvas3D_Node *
_evas_canvas3d_scene_exist(const Eo *obj, Evas_Canvas3D_Scene_Data *pd, Evas_Real x, Evas_Real y, Evas_Canvas3D_Node *node)
{
   Evas_Canvas3D_Pick_Data data;
   Evas_Canvas3D_Node_Data *pd_camera_node;
   Evas_Canvas3D_Camera_Data *pd_camera;
   Evas_Canvas3D_Object_Data *pd_parent;
   Evas_Public_Data *e;

   pd_parent = eo_data_scope_get(obj, EVAS_CANVAS3D_OBJECT_CLASS);
   e = eo_data_scope_get(pd_parent->evas, EVAS_CANVAS_CLASS);

   _pick_data_init(&data, e, x, y);

   /* Update the scene graph. */
   evas_canvas3d_object_update((Eo *) obj);
   pd_camera_node = eo_data_scope_get(pd->camera_node, EVAS_CANVAS3D_NODE_CLASS);
   pd_camera = eo_data_scope_get(pd_camera_node->data.camera.camera, EVAS_CANVAS3D_CAMERA_CLASS);
   eina_matrix4_multiply(&data.matrix_vp,
                      &pd_camera->projection,
                      &pd_camera_node->data.camera.matrix_world_to_eye);

   evas_ray3_init(&data.ray_world, data.x, data.y, &data.matrix_vp);

   /* Check pick for given node. */
   _node_pick(node, &data);

   if (!data.picked || data.node != node) node = NULL;

   return node;
}

EOLIAN static Eina_List *
_evas_canvas3d_scene_pick_member_list_get(const Eo *obj, Evas_Canvas3D_Scene_Data *pd, Evas_Real x, Evas_Real y)
{
   const Eina_List *list = NULL, *l = NULL;
   Eina_List *picked_nodes = NULL;
   void *node;
   Eina_Bool pick = EINA_FALSE;

   /* Check pick for given scene. */
   pick = evas_canvas3d_scene_pick(obj, x, y, NULL, NULL, NULL, NULL);

   if (!pick)
     return NULL;

   /* Get all members from root node. */
   list = evas_canvas3d_node_member_list_get(pd->root_node);

   EINA_LIST_FOREACH(list, l, node)
     {
        if (evas_canvas3d_scene_exist(obj, x, y, node))
          picked_nodes = eina_list_append(picked_nodes, l);
     }

   return picked_nodes;
}

EOLIAN static Eina_Bool
_evas_canvas3d_scene_shadows_enable_get(const Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd)
{
   return pd->shadows_enabled;
}

EOLIAN static void
_evas_canvas3d_scene_shadows_enable_set(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd, Eina_Bool _shadows_enabled)
{
   pd->shadows_enabled = _shadows_enabled;
   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_SHADOWS_ENABLED, NULL);
}

EOLIAN static Eina_Bool
_evas_canvas3d_scene_color_pick_enable_get(const Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd)
{
   return pd->color_pick_enabled;
}

EOLIAN static Eina_Bool
_evas_canvas3d_scene_color_pick_enable_set(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd, Eina_Bool _enabled)
{
   if (pd->color_pick_enabled != _enabled)
     pd->color_pick_enabled = _enabled;

   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_UPDATED, NULL);
   return EINA_TRUE;
}

EOLIAN static void
_evas_canvas3d_scene_shadows_depth_set(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd,
                                       Evas_Real depth_offset, Evas_Real depth_constant)
{
   pd->depth_offset = depth_offset;
   pd->depth_constant = depth_constant;
   evas_canvas3d_object_change(obj, EVAS_CANVAS3D_STATE_SCENE_SHADOWS_DEPTH, NULL);
}

EOLIAN static void
_evas_canvas3d_scene_shadows_depth_get(Eo *obj EINA_UNUSED, Evas_Canvas3D_Scene_Data *pd,
                                       Evas_Real *depth_offset, Evas_Real *depth_constant)
{
   if (depth_offset) *depth_offset = pd->depth_offset;
   if (depth_constant) *depth_constant = pd->depth_constant;
}

#include "canvas/evas_canvas3d_scene.eo.c"