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Depsgraph: provide more granularity to PoseBone property links. 

Most properties aren't altered by the evaluation of the bone,
and can be read immediately from its input operation. B-Bone
properties can be evaluated at the last possible moment.

This provides more freedom in using drivers to connect bone
properties: for example, it is now possible to read raw local
transform values via drivers from a bone that depends on the
reader bone via constraints.
This commit is contained in:
Alexander Gavrilov 2019-05-07 14:51:40 +03:00
parent 5968826562
commit c041e10c9a
Notes: blender-bot 2023-12-22 20:14:11 +01:00 
Referenced by issue #64249, Mirrored collection instances have wrong shading
1 changed files with 24 additions and 5 deletions
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29
source/blender/depsgraph/intern/builder/deg_builder_rna.cc
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@ -196,11 +196,30 @@ RNANodeIdentifier RNANodeQuery::construct_node_identifier(const PointerRNA *ptr,
/* Bone - generally, we just want the bone component. */
node_identifier.type = NodeType::BONE;
node_identifier.component_name = pchan->name;
/* But B-Bone properties should connect to the actual operation. */
Object *object = reinterpret_cast<Object *>(node_identifier.id);
if (!ELEM(NULL, pchan->bone, prop) && STRPREFIX(RNA_property_identifier(prop), "bbone_") &&
builder_->check_pchan_has_bbone_segments(object, pchan)) {
node_identifier.operation_code = OperationCode::BONE_SEGMENTS;
/* However check property name for special handling. */
if (prop != NULL) {
Object *object = reinterpret_cast<Object *>(node_identifier.id);
const char *prop_name = RNA_property_identifier(prop);
/* B-Bone properties should connect to the final operation. */
if (STRPREFIX(prop_name, "bbone_")) {
if (builder_->check_pchan_has_bbone_segments(object, pchan)) {
node_identifier.operation_code = OperationCode::BONE_SEGMENTS;
}
else {
node_identifier.operation_code = OperationCode::BONE_DONE;
}
}
/* Final transform properties go to the Done node for the exit. */
else if (STREQ(prop_name, "head") || STREQ(prop_name, "tail") ||
STRPREFIX(prop_name, "matrix")) {
if (source == RNAPointerSource::EXIT) {
node_identifier.operation_code = OperationCode::BONE_DONE;
}
}
/* And other properties can always go to the entry operation. */
else {
node_identifier.operation_code = OperationCode::BONE_LOCAL;
}
}
}
return node_identifier;