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Depsgraph: Fix dependency when constraint influence drives some other constraint 

It is not possible to address transform at particular position of constraint
stack, and when constraint is being addressed is usually from driver variable.

This fixes some of dependency cycles reported in T54083.
This commit is contained in:
Sergey Sharybin 2018-02-21 11:13:25 +01:00
parent fe1a508e55
commit 74ee98f642
1 changed files with 6 additions and 2 deletions
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8
source/blender/depsgraph/intern/depsgraph.cc
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@ -149,16 +149,20 @@ static bool pointer_to_component_node_criteria(
Object *object = (Object *)ptr->id.data;
bConstraint *con = (bConstraint *)ptr->data;
/* Check whether is object or bone constraint. */
/* NOTE: Currently none of the area can address transform of an object
* at a given constraint, but for rigging one might use constraint
* influence to be used to drive some corrective shape keys or so.
*/
if (BLI_findindex(&object->constraints, con) != -1) {
/* Constraint is defining object transform. */
*type = DEG_NODE_TYPE_TRANSFORM;
*operation_code = DEG_OPCODE_TRANSFORM_LOCAL;
return true;
}
else if (object->pose != NULL) {
LISTBASE_FOREACH(bPoseChannel *, pchan, &object->pose->chanbase) {
if (BLI_findindex(&pchan->constraints, con) != -1) {
/* bone transforms */
*type = DEG_NODE_TYPE_BONE;
*operation_code = DEG_OPCODE_BONE_LOCAL;
*subdata = pchan->name;
return true;
}