Depsgraph: Add evaluation callbacks for granular nodes update

This commit only adds callbacks which then later be used with major dependency
graph commit, keeping the upcoming commit more clean to follow.

Should be no functional changes so far still.

1 files changed, 44 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/armature.c b/source/blender/blenkernel/intern/armature.c
index d5416b41b44..498609e62ea 100644
--- a/source/blender/blenkernel/intern/armature.c
+++ b/source/blender/blenkernel/intern/armature.c
@@ -1825,9 +1825,12 @@ void BKE_pose_rebuild(Object *ob, bArmature *arm)
 
 	BKE_pose_update_constraint_flags(ob->pose); /* for IK detection for example */
 
+#ifdef WITH_LEGACY_DEPSGRAPH
 	/* the sorting */
+	/* Sorting for new dependnecy graph is done on the scene graph level. */
 	if (counter > 1)
 		DAG_pose_sort(ob);
+#endif
 
 	ob->pose->flag &= ~POSE_RECALC;
 	ob->pose->flag |= POSE_WAS_REBUILT;
@@ -2215,3 +2218,44 @@ BoundBox *BKE_armature_boundbox_get(Object *ob)
 
 	return ob->bb;
 }
+
+/************** Graph evaluation ********************/
+
+bPoseChannel *BKE_armature_ik_solver_find_root(bPoseChannel *pchan,
+                                               bKinematicConstraint *data)
+{
+	bPoseChannel *rootchan = pchan;
+	if (!(data->flag & CONSTRAINT_IK_TIP)) {
+		/* Exclude tip from chain. */
+		rootchan = rootchan->parent;
+	}
+	if (rootchan != NULL) {
+		int segcount = 0;
+		while (rootchan->parent) {
+			/* Continue up chain, until we reach target number of items. */
+			segcount++;
+			if (segcount == data->rootbone) {
+				break;
+			}
+			rootchan = rootchan->parent;
+		}
+	}
+	return rootchan;
+}
+
+bPoseChannel* BKE_armature_splineik_solver_find_root(bPoseChannel *pchan,
+                                                     bSplineIKConstraint *data)
+{
+	bPoseChannel *rootchan = pchan;
+	int segcount = 0;
+	BLI_assert(rootchan != NULL);
+	while (rootchan->parent) {
+		/* Continue up chain, until we reach target number of items. */
+		segcount++;
+		if (segcount == data->chainlen) {
+			break;
+		}
+		rootchan = rootchan->parent;
+	}
+	return rootchan;
+}