intern/cycles/blender/blender_object.cpp

   1 /*
   2  * Copyright 2011, Blender Foundation.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  */
  18
  19 #include "light.h"
  20 #include "mesh.h"
  21 #include "object.h"
  22 #include "scene.h"
  23
  24 #include "blender_sync.h"
  25 #include "blender_util.h"
  26
  27 #include "util_foreach.h"
  28
  29 CCL_NAMESPACE_BEGIN
  30
  31 /* Utilities */
  32
  33 bool BlenderSync::object_is_modified(BL::Object b_ob)
  34 {
  35         /* test if we can instance or if the object is modified */
  36         if(ccl::object_is_modified(b_ob, b_scene, preview)) {
  37                 /* modifiers */
  38                 return true;
  39         }
  40         else {
  41                 /* object level material links */
  42                 BL::Object::material_slots_iterator slot;
  43                 for(b_ob.material_slots.begin(slot); slot != b_ob.material_slots.end(); ++slot)
  44                         if(slot->link() == BL::MaterialSlot::link_OBJECT)
  45                                 return true;
  46         }
  47
  48         return false;
  49 }
  50
  51 bool BlenderSync::object_is_mesh(BL::Object b_ob)
  52 {
  53         BL::ID b_ob_data = b_ob.data();
  54
  55         return (b_ob_data && (b_ob_data.is_a(&RNA_Mesh) ||
  56                 b_ob_data.is_a(&RNA_Curve) || b_ob_data.is_a(&RNA_MetaBall)));
  57 }
  58
  59 bool BlenderSync::object_is_light(BL::Object b_ob)
  60 {
  61         BL::ID b_ob_data = b_ob.data();
  62
  63         return (b_ob_data && b_ob_data.is_a(&RNA_Lamp));
  64 }
  65
  66 static uint object_ray_visibility(BL::Object b_ob)
  67 {
  68         PointerRNA cvisibility = RNA_pointer_get(&b_ob.ptr, "cycles_visibility");
  69         uint flag = 0;
  70
  71         flag |= get_boolean(cvisibility, "camera")? PATH_RAY_CAMERA: 0;
  72         flag |= get_boolean(cvisibility, "diffuse")? PATH_RAY_DIFFUSE: 0;
  73         flag |= get_boolean(cvisibility, "glossy")? PATH_RAY_GLOSSY: 0;
  74         flag |= get_boolean(cvisibility, "transmission")? PATH_RAY_TRANSMIT: 0;
  75         flag |= get_boolean(cvisibility, "shadow")? PATH_RAY_SHADOW: 0;
  76
  77         return flag;
  78 }
  79
  80 /* Light */
  81
  82 void BlenderSync::sync_light(BL::Object b_parent, int b_index, BL::Object b_ob, Transform& tfm)
  83 {
  84         /* test if we need to sync */
  85         Light *light;
  86         ObjectKey key(b_parent, b_index, b_ob);
  87
  88         if(!light_map.sync(&light, b_ob, b_parent, key))
  89                 return;
  90
  91         BL::Lamp b_lamp(b_ob.data());
  92
  93         /* type */
  94         switch(b_lamp.type()) {
  95                 case BL::Lamp::type_POINT: {
  96                         BL::PointLamp b_point_lamp(b_lamp);
  97                         light->size = b_point_lamp.shadow_soft_size();
  98                         light->type = LIGHT_POINT;
  99                         break;
 100                 }
 101                 case BL::Lamp::type_SPOT: {
 102                         BL::SpotLamp b_spot_lamp(b_lamp);
 103                         light->size = b_spot_lamp.shadow_soft_size();
 104                         light->type = LIGHT_POINT;
 105                         break;
 106                 }
 107                 case BL::Lamp::type_HEMI: {
 108                         light->type = LIGHT_DISTANT;
 109                         light->size = 0.0f;
 110                         break;
 111                 }
 112                 case BL::Lamp::type_SUN: {
 113                         BL::SunLamp b_sun_lamp(b_lamp);
 114                         light->size = b_sun_lamp.shadow_soft_size();
 115                         light->type = LIGHT_DISTANT;
 116                         break;
 117                 }
 118                 case BL::Lamp::type_AREA: {
 119                         BL::AreaLamp b_area_lamp(b_lamp);
 120                         light->size = 1.0f;
 121                         light->axisu = make_float3(tfm.x.x, tfm.y.x, tfm.z.x);
 122                         light->axisv = make_float3(tfm.x.y, tfm.y.y, tfm.z.y);
 123                         light->sizeu = b_area_lamp.size();
 124                         if(b_area_lamp.shape() == BL::AreaLamp::shape_RECTANGLE)
 125                                 light->sizev = b_area_lamp.size_y();
 126                         else
 127                                 light->sizev = light->sizeu;
 128                         light->type = LIGHT_AREA;
 129                         break;
 130                 }
 131         }
 132
 133         /* location and (inverted!) direction */
 134         light->co = make_float3(tfm.x.w, tfm.y.w, tfm.z.w);
 135         light->dir = -make_float3(tfm.x.z, tfm.y.z, tfm.z.z);
 136
 137         /* shader */
 138         vector<uint> used_shaders;
 139
 140         find_shader(b_lamp, used_shaders, scene->default_light);
 141
 142         if(used_shaders.size() == 0)
 143                 used_shaders.push_back(scene->default_light);
 144
 145         light->shader = used_shaders[0];
 146
 147         /* shadow */
 148         PointerRNA clamp = RNA_pointer_get(&b_lamp.ptr, "cycles");
 149         light->cast_shadow = get_boolean(clamp, "cast_shadow");
 150
 151         /* tag */
 152         light->tag_update(scene);
 153 }
 154
 155 /* Object */
 156
 157 void BlenderSync::sync_object(BL::Object b_parent, int b_index, BL::Object b_ob, Transform& tfm, uint layer_flag)
 158 {
 159         /* light is handled separately */
 160         if(object_is_light(b_ob)) {
 161                 sync_light(b_parent, b_index, b_ob, tfm);
 162                 return;
 163         }
 164
 165         /* only interested in object that we can create meshes from */
 166         if(!object_is_mesh(b_ob))
 167                 return;
 168
 169         /* test if we need to sync */
 170         ObjectKey key(b_parent, b_index, b_ob);
 171         Object *object;
 172         bool object_updated = false;
 173
 174         if(object_map.sync(&object, b_ob, b_parent, key))
 175                 object_updated = true;
 176
 177         /* mesh sync */
 178         object->mesh = sync_mesh(b_ob, object_updated);
 179
 180         /* object sync */
 181         if(object_updated || (object->mesh && object->mesh->need_update)) {
 182                 object->name = b_ob.name().c_str();
 183                 object->tfm = tfm;
 184
 185                 /* visibility flags for both parent */
 186                 object->visibility = object_ray_visibility(b_ob) & PATH_RAY_ALL;
 187                 if(b_parent.ptr.data != b_ob.ptr.data)
 188                         object->visibility &= object_ray_visibility(b_parent);
 189
 190                 /* camera flag is not actually used, instead is tested
 191                    against render layer flags */
 192                 if(object->visibility & PATH_RAY_CAMERA) {
 193                         object->visibility |= layer_flag << PATH_RAY_LAYER_SHIFT;
 194                         object->visibility &= ~PATH_RAY_CAMERA;
 195                 }
 196
 197                 object->tag_update(scene);
 198         }
 199 }
 200
 201 /* Object Loop */
 202
 203 void BlenderSync::sync_objects(BL::SpaceView3D b_v3d)
 204 {
 205         /* layer data */
 206         uint scene_layer = render_layers.front().scene_layer;
 207
 208         /* prepare for sync */
 209         light_map.pre_sync();
 210         mesh_map.pre_sync();
 211         object_map.pre_sync();
 212         mesh_synced.clear();
 213
 214         /* object loop */
 215         BL::Scene::objects_iterator b_ob;
 216
 217         for(b_scene.objects.begin(b_ob); b_ob != b_scene.objects.end(); ++b_ob) {
 218                 bool hide = (b_v3d)? b_ob->hide(): b_ob->hide_render();
 219                 uint ob_layer = get_layer(b_ob->layers());
 220
 221                 if(!hide && (ob_layer & scene_layer)) {
 222                         if(b_ob->is_duplicator()) {
 223                                 /* dupli objects */
 224                                 object_create_duplilist(*b_ob, b_scene);
 225
 226                                 BL::Object::dupli_list_iterator b_dup;
 227                                 int b_index = 0;
 228
 229                                 for(b_ob->dupli_list.begin(b_dup); b_dup != b_ob->dupli_list.end(); ++b_dup) {
 230                                         Transform tfm = get_transform(b_dup->matrix());
 231                                         sync_object(*b_ob, b_index, b_dup->object(), tfm, ob_layer);
 232                                         b_index++;
 233                                 }
 234
 235                                 object_free_duplilist(*b_ob);
 236
 237                                 hide = true;
 238                         }
 239
 240                         /* check if we should render or hide particle emitter */
 241                         BL::Object::particle_systems_iterator b_psys;
 242                         bool render_emitter = false;
 243
 244                         for(b_ob->particle_systems.begin(b_psys); b_psys != b_ob->particle_systems.end(); ++b_psys) {
 245                                 if(b_psys->settings().use_render_emitter()) {
 246                                         hide = false;
 247                                         render_emitter = true;
 248                                 }
 249                                 else if(!render_emitter)
 250                                         hide = true;
 251                         }
 252
 253                         if(!hide) {
 254                                 /* object itself */
 255                                 Transform tfm = get_transform(b_ob->matrix_world());
 256                                 sync_object(*b_ob, 0, *b_ob, tfm, ob_layer);
 257                         }
 258                 }
 259         }
 260
 261         /* handle removed data and modified pointers */
 262         if(light_map.post_sync())
 263                 scene->light_manager->tag_update(scene);
 264         if(mesh_map.post_sync())
 265                 scene->mesh_manager->tag_update(scene);
 266         if(object_map.post_sync())
 267                 scene->object_manager->tag_update(scene);
 268         mesh_synced.clear();
 269 }
 270
 271 CCL_NAMESPACE_END
 272