Advanced Retargeting option: If the end user armature is complex, on the level of Sintel/Mancandy rigs, the user is requested to mark Advanced Retargeting, and constraints will be semi automatically configured to retarget the animation and then Retargeting will bake and remove these constraints

release/scripts/modules/retarget.py

@@ -21,6 +21,7 @@
 import bpy
 from mathutils import *
 from math import radians, acos
+from bl_operators import nla
 import cProfile
 
 
@@ -264,6 +265,7 @@ def copyTranslation(performer_obj, enduser_obj, perfFeet, root, s_frame, e_frame
             v = locDeriv[key][i]
             hipV = locDeriv[perfRoot][i]
             endV = locDeriv[perf_bones[key].bone.map][i]
+            print(v.length,)
             if (v.length < 0.1):
                 #this is a plant frame.
                 #lets see what the original hip delta is, and the corresponding
@@ -284,6 +286,7 @@ def copyTranslation(performer_obj, enduser_obj, perfFeet, root, s_frame, e_frame
         stride_bone.name = "stride_bone"
     print(stride_bone)
     stride_bone.location = Vector((0, 0, 0))
+    print(linearAvg)
     if linearAvg:
         #determine the average change in scale needed
         avg = sum(linearAvg) / len(linearAvg)
@@ -295,6 +298,8 @@ def copyTranslation(performer_obj, enduser_obj, perfFeet, root, s_frame, e_frame
             newTranslation = (tailLoc(perf_bones[perfRoot]) / avg)
             stride_bone.location = enduser_obj_mat * (newTranslation - initialPos)
             stride_bone.keyframe_insert("location")
+    else:
+        stride_bone.keyframe_insert("location")
     stride_bone.animation_data.action.name = ("Stride Bone " + action_name)
 
     return stride_bone
@@ -439,10 +444,66 @@ def NLASystemInitialize(enduser_arm, context):#enduser_obj, name):
     anim_data.action = None
 
 
+def preAdvancedRetargeting(performer_obj, enduser_obj):
+    createDictionary(performer_obj.data, enduser_obj.data)
+    bones = enduser_obj.pose.bones
+    map_bones = [bone for bone in bones if bone.bone.reverseMap]
+    for bone in map_bones:
+        perf_bone = bone.bone.reverseMap[0].name
+        addLocalRot = False;
+        if bone.bone.use_connect or not bone.constraints:
+            locks = bone.lock_location
+            if not (locks[0] or locks[1] or locks[2]):  
+                cons = bone.constraints.new('COPY_LOCATION')
+                cons.name = "retargetTemp"
+                cons.use_x = not locks[0]
+                cons.use_y = not locks[1]
+                cons.use_z = not locks[2]
+                cons.target = performer_obj
+                cons.subtarget = perf_bone
+                addLocalRot = True
+
+       
+        cons2 = bone.constraints.new('COPY_ROTATION')
+        cons2.name = "retargetTemp"
+        locks = bone.lock_rotation
+        cons2.use_x = not locks[0]
+        cons2.use_y = not locks[1]
+        cons2.use_z = not locks[2]
+        cons2.target = performer_obj
+        cons2.subtarget = perf_bone
+
+        if addLocalRot:
+            for constraint in bone.constraints:
+                if constraint.type == 'COPY_ROTATION':
+                    constraint.target_space = 'LOCAL'
+                    constraint.owner_space = 'LOCAL_WITH_PARENT'
+
+
+def prepareForBake(enduser_obj):
+    bones = enduser_obj.pose.bones
+    for bone in bones:
+        bone.bone.select = False
+    map_bones = [bone for bone in bones if bone.bone.reverseMap]
+    for bone in map_bones:
+        for cons in bone.constraints:
+            if "retargetTemp" in cons.name:
+                bone.bone.select = True
+
+def cleanTempConstraints(enduser_obj):
+    bones = enduser_obj.pose.bones
+    map_bones = [bone for bone in bones if bone.bone.reverseMap]
+    for bone in map_bones:
+        for cons in bone.constraints:
+            if "retargetTemp" in cons.name:
+                bone.constraints.remove(cons)
+
 #Main function that runs the retargeting sequence.
+#If advanced == True, we assume constraint's were already created
 def totalRetarget(performer_obj, enduser_obj, scene, s_frame, e_frame):
     perf_arm = performer_obj.data
     end_arm = enduser_obj.data
+    advanced = end_arm.advancedRetarget
     
     try:
         enduser_obj.animation_data.action = bpy.data.actions.new("temp")
@@ -450,27 +511,33 @@ def totalRetarget(performer_obj, enduser_obj, scene, s_frame, e_frame):
     except:
         print("no need to create new action")
     
-    
     print("creating Dictionary")
     feetBones, root = createDictionary(perf_arm, end_arm)
     print("cleaning stuff up")
     perf_obj_mat, enduser_obj_mat = cleanAndStoreObjMat(performer_obj, enduser_obj)
+    if not advanced:
         turnOffIK(enduser_obj)
         print("Creating intermediate armature (for first pass)")
         inter_obj = createIntermediate(performer_obj, enduser_obj, root, s_frame, e_frame, scene)
         print("First pass: retargeting from intermediate to end user")
-
-        
         retargetEnduser(inter_obj, enduser_obj, root, s_frame, e_frame, scene)
+    else:
+        prepareForBake(enduser_obj)
+        print("Retargeting pose (Advanced Retarget)")
+        nla.bake(s_frame, e_frame, action=enduser_obj.animation_data.action, only_selected=True, do_pose=True, do_object=False)
     name = performer_obj.animation_data.action.name
     enduser_obj.animation_data.action.name = "Base " + name
     print("Second pass: retargeting root translation and clean up")
     stride_bone = copyTranslation(performer_obj, enduser_obj, feetBones, root, s_frame, e_frame, scene, enduser_obj_mat)
+    if not advanced:
         IKRetarget(performer_obj, enduser_obj, s_frame, e_frame, scene)
     restoreObjMat(performer_obj, enduser_obj, perf_obj_mat, enduser_obj_mat, stride_bone)
     bpy.ops.object.mode_set(mode='OBJECT')
+    if not advanced:
         bpy.ops.object.select_name(name=inter_obj.name, extend=False)
         bpy.ops.object.delete()
+    else:
+        cleanTempConstraints(enduser_obj)
     bpy.ops.object.select_name(name=enduser_obj.name, extend=False)
 
     if not name in [tracks.name for tracks in end_arm.mocapNLATracks]:

release/scripts/startup/ui_mocap.py

@@ -140,9 +140,26 @@ class MocapNLATracks(bpy.types.PropertyGroup):
 
 bpy.utils.register_class(MocapNLATracks)
 
+                    
+def advancedRetargetToggle(self, context):
+    enduser_obj = context.active_object
+    performer_obj = [obj for obj in context.selected_objects if obj != enduser_obj]
+    if enduser_obj is None or len(performer_obj) != 1:
+        print("Need active and selected armatures")
+        return
+    else:
+        performer_obj = performer_obj[0]
+    if self.advancedRetarget:
+        retarget.preAdvancedRetargeting(performer_obj, enduser_obj)
+    else:
+        retarget.cleanTempConstraints(enduser_obj)
+
+
+
 bpy.types.Armature.stitch_settings = bpy.props.PointerProperty(type=AnimationStitchSettings)
 bpy.types.Armature.active_mocap =  bpy.props.StringProperty(update=retarget.NLASystemInitialize)
 bpy.types.Armature.mocapNLATracks = bpy.props.CollectionProperty(type=MocapNLATracks)
+bpy.types.Armature.advancedRetarget = bpy.props.BoolProperty(default=False, update=advancedRetargetToggle)
 
 #Update function for IK functionality. Is called when IK prop checkboxes are toggled.
 
@@ -281,6 +298,7 @@ class MocapPanel(bpy.types.Panel):
                     mapRow.operator("mocap.savemapping", text='Save mapping')
                     mapRow.operator("mocap.loadmapping", text='Load mapping')
                     self.layout.prop(data=performer_obj.animation_data.action, property='name', text='Action Name')
+                    self.layout.prop(enduser_arm, "advancedRetarget", text='Advanced Retarget')
                     self.layout.operator("mocap.retarget", text='RETARGET!')
 
 
@@ -398,6 +416,35 @@ class OBJECT_OT_RetargetButton(bpy.types.Operator):
             return False
             
     
+    #~ class OBJECT_OT_AdvancedRetargetButton(bpy.types.Operator):
+        #~ '''Prepare for advanced retargeting '''
+        #~ bl_idname = "mocap.preretarget"
+        #~ bl_label = "Prepares retarget of active action from Performer to Enduser"
+
+        #~ def execute(self, context):
+            #~ scene = context.scene
+            #~ s_frame = scene.frame_start
+            #~ e_frame = scene.frame_end
+            #~ enduser_obj = context.active_object
+            #~ performer_obj = [obj for obj in context.selected_objects if obj != enduser_obj]
+            #~ if enduser_obj is None or len(performer_obj) != 1:
+                #~ print("Need active and selected armatures")
+            #~ else:
+                #~ performer_obj = performer_obj[0]
+            #~ retarget.preAdvancedRetargeting(performer_obj, enduser_obj)
+            #~ return {"FINISHED"}
+
+        #~ @classmethod
+        #~ def poll(cls, context):
+            #~ if context.active_object:
+                #~ activeIsArmature = isinstance(context.active_object.data, bpy.types.Armature)
+            #~ performer_obj = [obj for obj in context.selected_objects if obj != context.active_object]
+            #~ if performer_obj:
+                #~ return activeIsArmature and isinstance(performer_obj[0].data, bpy.types.Armature)
+            #~ else:
+                #~ return False
+
+
 class OBJECT_OT_SaveMappingButton(bpy.types.Operator):
     '''Save mapping to active armature (for future retargets) '''
     bl_idname = "mocap.savemapping"