Chain rotations for objects and pose bones (for teamto)

This commit adds an exception for rotations (standard rotation and tracball) to still work on children of transformed objects and bones in an expected fashion. That is, you can select a chain of finger bones and rotate to flex them all at once.

Notes:
[1] This could be expended to other transformations if needed.
[2] Center of transformation is determined using the same principle as hinge bones (transformed children aren't taken into account)

1 files changed, 40 insertions, 8 deletions

diff --git a/source/blender/src/transform_conversions.c b/source/blender/src/transform_conversions.c
index 3465983d110..496d5120bb9 100644
--- a/source/blender/src/transform_conversions.c
+++ b/source/blender/src/transform_conversions.c
@@ -540,8 +540,17 @@ static void add_pose_transdata(TransInfo *t, bPoseChannel *pchan, Object *ob, Tr
 	
 	td->ob = ob;
 	td->flag= TD_SELECTED|TD_USEQUAT;
-	if(bone->flag & BONE_HINGE_CHILD_TRANSFORM)
+	if (bone->flag & BONE_HINGE_CHILD_TRANSFORM)
+	{
+		td->flag |= TD_NOCENTER;
+	}
+	
+	if (bone->flag & BONE_TRANSFORM_CHILD)
+	{
 		td->flag |= TD_NOCENTER;
+		td->flag |= TD_NO_LOC;
+	}
+	
 	td->protectflag= pchan->protectflag;
 	
 	td->loc = pchan->loc;
@@ -628,17 +637,25 @@ static void add_pose_transdata(TransInfo *t, bPoseChannel *pchan, Object *ob, Tr
 	td->con= pchan->constraints.first;
 }
 
-static void bone_children_clear_transflag(ListBase *lb)
+static void bone_children_clear_transflag(TransInfo *t, ListBase *lb)
 {
 	Bone *bone= lb->first;
 	
 	for(;bone;bone= bone->next) {
 		if((bone->flag & BONE_HINGE) && (bone->flag & BONE_CONNECTED))
+		{
 			bone->flag |= BONE_HINGE_CHILD_TRANSFORM;
+		}
+		else if (bone->flag & BONE_TRANSFORM && (t->mode == TFM_ROTATION || t->mode == TFM_TRACKBALL)) 
+		{
+			bone->flag |= BONE_TRANSFORM_CHILD;
+		}
 		else
+		{
 			bone->flag &= ~BONE_TRANSFORM;
+		}
 
-		bone_children_clear_transflag(&bone->childbase);
+		bone_children_clear_transflag(t, &bone->childbase);
 	}
 }
 
@@ -661,6 +678,7 @@ static void set_pose_transflags(TransInfo *t, Object *ob)
 				bone->flag &= ~BONE_TRANSFORM;
 
 			bone->flag &= ~BONE_HINGE_CHILD_TRANSFORM;
+			bone->flag &= ~BONE_TRANSFORM_CHILD;
 		}
 	}
 	
@@ -670,7 +688,7 @@ static void set_pose_transflags(TransInfo *t, Object *ob)
 		for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
 			bone= pchan->bone;
 			if(bone->flag & BONE_TRANSFORM)
-				bone_children_clear_transflag(&bone->childbase);
+				bone_children_clear_transflag(t, &bone->childbase);
 		}
 	}	
 	/* now count, and check if we have autoIK or have to switch from translate to rotate */
@@ -3497,9 +3515,17 @@ static void set_trans_object_base_flags(TransInfo *t)
 				parsel= parsel->parent;
 			}
 			
-			if(parsel) {
-				base->flag &= ~SELECT;
-				base->flag |= BA_WAS_SEL;
+			if(parsel)
+			{
+				if (t->mode == TFM_ROTATION || t->mode == TFM_TRACKBALL)
+				{
+					base->flag |= BA_TRANSFORM_CHILD;
+				}
+				else
+				{
+					base->flag &= ~SELECT;
+					base->flag |= BA_WAS_SEL;
+				}
 			}
 			/* used for flush, depgraph will change recalcs if needed :) */
 			ob->recalc |= OB_RECALC_OB;
@@ -3526,7 +3552,7 @@ static void clear_trans_object_base_flags(void)
 	base= FIRSTBASE;
 	while(base) {
 		if(base->flag & BA_WAS_SEL) base->flag |= SELECT;
-		base->flag &= ~(BA_WAS_SEL|BA_HAS_RECALC_OB|BA_HAS_RECALC_DATA|BA_DO_IPO);
+		base->flag &= ~(BA_WAS_SEL|BA_HAS_RECALC_OB|BA_HAS_RECALC_DATA|BA_DO_IPO|BA_TRANSFORM_CHILD);
 		
 		base = base->next;
 	}
@@ -4097,6 +4123,12 @@ static void createTransObject(TransInfo *t)
 			td->protectflag= ob->protectflag;
 			td->ext = tx;
 			
+			if (base->flag & BA_TRANSFORM_CHILD)
+			{
+				td->flag |= TD_NOCENTER;
+				td->flag |= TD_NO_LOC;
+			}
+			
 			/* select linked objects, but skip them later */
 			if (ob->id.lib != 0) {
 				td->flag |= TD_SKIP;