[Bf-blender-cvs] [67dc09c] alembic_basic_io: Depsgraph: add relations between cache files and transform cache constraints.

[Kévin Dietrich]

Commit: 67dc09c7cfbbf66df130a8af206173a50fcd9397
Author: Kévin Dietrich
Date:   Wed Jul 20 19:43:15 2016 +0200
Branches: alembic_basic_io
https://developer.blender.org/rB67dc09c7cfbbf66df130a8af206173a50fcd9397

Depsgraph: add relations between cache files and transform cache
constraints.

===================================================================

M	source/blender/depsgraph/intern/builder/deg_builder_relations.cc

===================================================================

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 5770527..2e507b7 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -47,6 +47,7 @@ extern "C" {
 #include "DNA_anim_types.h"
 #include "DNA_armature_types.h"
 #include "DNA_camera_types.h"
+#include "DNA_cachefile_types.h"
 #include "DNA_constraint_types.h"
 #include "DNA_curve_types.h"
 #include "DNA_effect_types.h"
@@ -570,7 +571,7 @@ void DepsgraphRelationBuilder::build_constraints(Scene *scene, ID *id, eDepsNode
 
 		/* special case for camera tracking -- it doesn't use targets to define relations */
 		// TODO: we can now represent dependencies in a much richer manner, so review how this is done...
-		if (ELEM(cti->type, CONSTRAINT_TYPE_FOLLOWTRACK, CONSTRAINT_TYPE_CAMERASOLVER, CONSTRAINT_TYPE_OBJECTSOLVER, CONSTRAINT_TYPE_TRANSFORMCACHE)) {
+		if (ELEM(cti->type, CONSTRAINT_TYPE_FOLLOWTRACK, CONSTRAINT_TYPE_CAMERASOLVER, CONSTRAINT_TYPE_OBJECTSOLVER)) {
 			bool depends_on_camera = false;
 
 			if (cti->type == CONSTRAINT_TYPE_FOLLOWTRACK) {
@@ -599,6 +600,18 @@ void DepsgraphRelationBuilder::build_constraints(Scene *scene, ID *id, eDepsNode
 			TimeSourceKey time_src_key;
 			add_relation(time_src_key, constraint_op_key, DEPSREL_TYPE_TIME, "[TimeSrc -> Animation]");
 		}
+		else if (cti->type == CONSTRAINT_TYPE_TRANSFORMCACHE) {
+			/* TODO(kevin): This is more a TimeSource -> CacheFile -> Constraint dependency chain. */
+			TimeSourceKey time_src_key;
+			add_relation(time_src_key, constraint_op_key, DEPSREL_TYPE_TIME, "[TimeSrc -> Animation]");
+
+			bTransformCacheConstraint *data = (bTransformCacheConstraint *)con->data;
+
+			if (data->cache_file) {
+				ComponentKey cache_key(&data->cache_file->id, DEPSNODE_TYPE_CACHE);
+				add_relation(cache_key, constraint_op_key, DEPSREL_TYPE_CACHE, cti->name);
+			}
+		}
 		else if (cti->get_constraint_targets) {
 			ListBase targets = {NULL, NULL};
 			cti->get_constraint_targets(con, &targets);