Objects: add Volume object type, and prototypes for Hair and PointCloud

Only the volume object is exposed in the user interface. It is based on OpenVDB
internally. Drawing and rendering code will follow in another commit.
https://wiki.blender.org/wiki/Source/Objects/Volume
https://wiki.blender.org/wiki/Reference/Release_Notes/2.83/Volumes

Hair and PointCloud object types are hidden behind a WITH_NEW_OBJECT_TYPES
build option. These are unfinished, and included only to make it easier to
cooperate on development in the future and avoid tricky merges.
https://wiki.blender.org/wiki/Source/Objects/New_Object_Types

Ref T73201, T68981

Differential Revision: https://developer.blender.org/D6945

1 files changed, 22 insertions, 2 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 27d6db6a58f..4647486bafd 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -64,6 +64,7 @@ extern "C" {
 #include "DNA_sound_types.h"
 #include "DNA_speaker_types.h"
 #include "DNA_texture_types.h"
+#include "DNA_volume_types.h"
 #include "DNA_world_types.h"
 #include "DNA_object_force_types.h"
 
@@ -537,6 +538,9 @@ void DepsgraphRelationBuilder::build_id(ID *id)
     case ID_CU:
     case ID_MB:
     case ID_LT:
+    case ID_HA:
+    case ID_PT:
+    case ID_VO:
       build_object_data_geometry_datablock(id);
       break;
     case ID_SPK:
@@ -771,7 +775,10 @@ void DepsgraphRelationBuilder::build_object_data(Object *object)
     case OB_SURF:
     case OB_MBALL:
     case OB_LATTICE:
-    case OB_GPENCIL: {
+    case OB_GPENCIL:
+    case OB_HAIR:
+    case OB_POINTCLOUD:
+    case OB_VOLUME: {
       build_object_data_geometry(object);
       /* TODO(sergey): Only for until we support granular
        * update of curves. */
@@ -2145,6 +2152,19 @@ void DepsgraphRelationBuilder::build_object_data_geometry_datablock(ID *obdata)
       }
       break;
     }
+    case ID_HA:
+      break;
+    case ID_PT:
+      break;
+    case ID_VO: {
+      Volume *volume = (Volume *)obdata;
+      if (volume->is_sequence) {
+        TimeSourceKey time_key;
+        ComponentKey geometry_key(obdata, NodeType::GEOMETRY);
+        add_relation(time_key, geometry_key, "Volume sequence time");
+      }
+      break;
+    }
     default:
       BLI_assert(!"Should not happen");
       break;
@@ -2593,7 +2613,7 @@ void DepsgraphRelationBuilder::build_copy_on_write_relations(IDNode *id_node)
       continue;
     }
     int rel_flag = (RELATION_FLAG_NO_FLUSH | RELATION_FLAG_GODMODE);
-    if ((id_type == ID_ME && comp_node->type == NodeType::GEOMETRY) ||
+    if ((ELEM(id_type, ID_ME, ID_HA, ID_PT, ID_VO) && comp_node->type == NodeType::GEOMETRY) ||
         (id_type == ID_CF && comp_node->type == NodeType::CACHE)) {
       rel_flag &= ~RELATION_FLAG_NO_FLUSH;
     }