Created property systems for multiple retargets on a single armature, for this type of use and animation stitching. Also contains some placeholder UI and code for animation stitching.

release/scripts/modules/mocap_constraints.py

@@ -59,7 +59,7 @@ def addNewConstraint(m_constraint, cons_obj):
         c_type = "LIMIT_LOCATION"
         #create and store the new constraint within m_constraint
     real_constraint = cons_obj.constraints.new(c_type)
-    real_constraint.name = "Mocap fix " + str(len(cons_obj.constraints))
+    real_constraint.name = "Auto fixes " + str(len(cons_obj.constraints))
     m_constraint.real_constraint_bone = consObjToBone(cons_obj)
     m_constraint.real_constraint = real_constraint.name
     #set the rest of the constraint properties
@@ -364,7 +364,8 @@ def bakeAllConstraints(obj, s_frame, e_frame, bones):
                 simpleBake += [end_bone]
     for bone in selectedBones:
         bone.bone.select = True
-    constraintTrack = obj.animation_data.nla_tracks["Mocap fixes"]
+    tracks = [track for track in obj.data.mocapNLATracks if track.active][0]
+    constraintTrack = obj.animation_data.nla_tracks[tracks.auto_fix_track]
     constraintStrip = constraintTrack.strips[0]
     constraintStrip.action_frame_start = s_frame
     constraintStrip.action_frame_end = e_frame
@@ -403,7 +404,8 @@ def unbakeConstraints(context):
     obj = context.active_object
     bones = obj.pose.bones
     scene = bpy.context.scene
-    constraintTrack = obj.animation_data.nla_tracks["Mocap fixes"]
+    tracks = obj.data.mocapNLATracks[obj.animation_data.action]
+    constraintTrack = obj.animation_data.nla_tracks[tracks.auto_fix_track]
     constraintStrip = constraintTrack.strips[0]
     action = constraintStrip.action
     # delete the fcurves on the strip

release/scripts/modules/mocap_tools.py

@@ -757,3 +757,11 @@ def path_editing(context, stride_obj, path):
         eval_time_fcurve.keyframe_points.insert(frame=t, value=parameterization[t])
     y_fcurve.mute = True
     print("finished path editing")
+
+
+def anim_stitch(context, enduser_obj):
+    stitch_settings = enduser_obj.data.stitch_settings
+    action_1 = stitch_settings.first_action
+    action_2 = stitch_settings.second_action
+    TrackNamesA = enduser_obj.data.mocapNLATracks[action_1]
+    TrackNamesB = enduser_obj.data.mocapNLATracks[action_2]

release/scripts/modules/retarget.py

@@ -272,21 +272,31 @@ def copyTranslation(performer_obj, enduser_obj, perfFeet, root, s_frame, e_frame
                 if endV.length != 0:
                     linearAvg.append(hipV.length / endV.length)
 
+    action_name = performer_obj.animation_data.action.name
+    #if you have a parent, and that parent is a previously created stride bone
+    if enduser_obj.parent:
+        stride_action = bpy.data.actions.new("Stride Bone " + action_name)
+        stride_bone = enduser_obj.parent
+        stride_bone.animation_data.action = stride_action
+    else:
         bpy.ops.object.add()
         stride_bone = bpy.context.active_object
         stride_bone.name = "stride_bone"
-
+    print(stride_bone)
+    stride_bone.location = Vector((0, 0, 0))
     if linearAvg:
         #determine the average change in scale needed
         avg = sum(linearAvg) / len(linearAvg)
         scene.frame_set(s_frame)
-        initialPos = (tailLoc(perf_bones[perfRoot]) / avg)
+        initialPos = (tailLoc(perf_bones[perfRoot]) / avg) + stride_bone.location
         for t in range(s_frame, e_frame):
             scene.frame_set(t)
             #calculate the new position, by dividing by the found ratio between performer and enduser
             newTranslation = (tailLoc(perf_bones[perfRoot]) / avg)
             stride_bone.location = enduser_obj_mat * (newTranslation - initialPos)
             stride_bone.keyframe_insert("location")
+    stride_bone.animation_data.action.name = ("Stride Bone " + action_name)
+
     return stride_bone
 
 
@@ -299,7 +309,7 @@ def IKRetarget(performer_obj, enduser_obj, s_frame, e_frame, scene):
             # set constraint target to corresponding empty if targetless,
             # if not, keyframe current target to corresponding empty
             perf_bone = pose_bone.bone.reverseMap[-1].name
-            orgLocTrg = originalLocationTarget(pose_bone)
+            orgLocTrg = originalLocationTarget(pose_bone, enduser_obj)
             if not ik_constraint.target:
                 ik_constraint.target = orgLocTrg
                 target = orgLocTrg
@@ -322,6 +332,7 @@ def IKRetarget(performer_obj, enduser_obj, s_frame, e_frame, scene):
                 target.location = final_loc
                 target.keyframe_insert("location")
             ik_constraint.mute = False
+    scene.frame_set(s_frame)
 
 
 def turnOffIK(enduser_obj):
@@ -358,44 +369,59 @@ def restoreObjMat(performer_obj, enduser_obj, perf_obj_mat, enduser_obj_mat, str
             empty = bpy.data.objects[pose_bone.name + "Org"]
             empty.parent = stride_bone
     performer_obj.matrix_world = perf_obj_mat
-    enduser_obj.matrix_world = enduser_obj_mat
     enduser_obj.parent = stride_bone
+    enduser_obj.matrix_world = enduser_obj_mat
 
 
 #create (or return if exists) the related IK empty to the bone
-def originalLocationTarget(end_bone):
+def originalLocationTarget(end_bone, enduser_obj):
     if not end_bone.name + "Org" in bpy.data.objects:
         bpy.ops.object.add()
         empty = bpy.context.active_object
         empty.name = end_bone.name + "Org"
         empty.empty_draw_size = 0.1
-        #empty.parent = enduser_obj
+        empty.parent = enduser_obj
     empty = bpy.data.objects[end_bone.name + "Org"]
     return empty
 
 
 #create the specified NLA setup for base animation, constraints and tweak layer.
-def NLASystemInitialize(enduser_obj, s_frame):
+def NLASystemInitialize(enduser_obj, s_frame, name):
     anim_data = enduser_obj.animation_data
+    if not name in enduser_obj.data.mocapNLATracks:
+        NLATracks = enduser_obj.data.mocapNLATracks.add()
+        NLATracks.name = name
+    else:
+        NLATracks = enduser_obj.data.mocapNLATracks[name]
+    for track in enduser_obj.data.mocapNLATracks:
+        track.active = False
     mocapAction = anim_data.action
-    mocapAction.name = "Base Mocap"
+    mocapAction.name = "Base " + name
     anim_data.use_nla = True
+    for track in anim_data.nla_tracks:
+        anim_data.nla_tracks.remove(track)
     mocapTrack = anim_data.nla_tracks.new()
-    mocapTrack.name = "Base Mocap Track"
+    mocapTrack.name = "Base " + name
-    mocapStrip = mocapTrack.strips.new("Base Mocap", s_frame, mocapAction)
+    NLATracks.base_track = mocapTrack.name
+    mocapStrip = mocapTrack.strips.new("Base " + name, s_frame, mocapAction)
     constraintTrack = anim_data.nla_tracks.new()
-    constraintTrack.name = "Mocap fixes"
+    constraintTrack.name = "Auto fixes " + name
-    constraintAction = bpy.data.actions.new("Mocap fixes")
+    NLATracks.auto_fix_track = constraintTrack.name
-    constraintStrip = constraintTrack.strips.new("Mocap fixes", s_frame, constraintAction)
+    constraintAction = bpy.data.actions.new("Auto fixes " + name)
+    constraintStrip = constraintTrack.strips.new("Auto fixes " + name, s_frame, constraintAction)
     constraintStrip.extrapolation = "NOTHING"
     userTrack = anim_data.nla_tracks.new()
-    userTrack.name = "Mocap manual fix"
+    userTrack.name = "Manual fixes " + name
-    userAction = bpy.data.actions.new("Mocap manual fix")
+    NLATracks.manual_fix_track = userTrack.name
-    userStrip = userTrack.strips.new("Mocap manual fix", s_frame, userAction)
+    if enduser_obj.parent.animation_data:
+        NLATracks.stride_action = enduser_obj.parent.animation_data.action.name
+    userAction = bpy.data.actions.new("Manual fixes " + name)
+    userStrip = userTrack.strips.new("Manual fixes " + name, s_frame, userAction)
     userStrip.extrapolation = "HOLD"
     #userStrip.blend_type = "MULITPLY" - doesn't work due to work, will be activated soon
     anim_data.nla_tracks.active = constraintTrack
-    anim_data.action = constraintAction
+    NLATracks.active = True
+    #anim_data.action = constraintAction
     anim_data.action_extrapolation = "NOTHING"
 
 
@@ -419,7 +445,7 @@ def totalRetarget(performer_obj, enduser_obj, scene, s_frame, e_frame):
     bpy.ops.object.mode_set(mode='OBJECT')
     bpy.ops.object.select_name(name=inter_obj.name, extend=False)
     bpy.ops.object.delete()
-    NLASystemInitialize(enduser_obj, s_frame)
+    NLASystemInitialize(enduser_obj, s_frame, performer_obj.animation_data.action.name)
     print("retargeting done!")
 
 if __name__ == "__main__":

release/scripts/startup/ui_mocap.py

@@ -110,6 +110,35 @@ bpy.utils.register_class(MocapConstraint)
 
 bpy.types.Armature.mocap_constraints = bpy.props.CollectionProperty(type=MocapConstraint)
 
+
+class AnimationStitchSettings(bpy.types.PropertyGroup):
+    first_action = bpy.props.StringProperty(name="Action 1",
+            description="First action in stitch")
+    second_action = bpy.props.StringProperty(name="Action 2",
+            description="Second action in stitch")
+    blend_frame = bpy.props.IntProperty(name="Stitch frame",
+            description="Frame to locate stitch on")
+    blend_amount = bpy.props.IntProperty(name="Blend amount",
+            description="Size of blending transitiion, on both sides of the stitch",
+            default=10)
+
+bpy.utils.register_class(AnimationStitchSettings)
+
+
+class MocapNLATracks(bpy.types.PropertyGroup):
+    name = bpy.props.StringProperty()
+    active = bpy.props.BoolProperty()
+    base_track = bpy.props.StringProperty()
+    auto_fix_track = bpy.props.StringProperty()
+    manual_fix_track = bpy.props.StringProperty()
+    stride_action = bpy.props.StringProperty()
+
+bpy.utils.register_class(MocapNLATracks)
+
+bpy.types.Armature.stitch_settings = bpy.props.PointerProperty(type=AnimationStitchSettings)
+
+bpy.types.Armature.mocapNLATracks = bpy.props.CollectionProperty(type=MocapNLATracks)
+
 #Update function for IK functionality. Is called when IK prop checkboxes are toggled.
 
 
@@ -246,6 +275,7 @@ class MocapPanel(bpy.types.Panel):
                     mapRow = self.layout.row()
                     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.operator("mocap.retarget", text='RETARGET!')
 
 
@@ -315,6 +345,16 @@ class ExtraToolsPanel(bpy.types.Panel):
     def draw(self, context):
         layout = self.layout
         layout.operator('mocap.pathediting', text="Follow Path")
+        layout.label("Animation Stitching")
+        activeIsArmature = isinstance(context.active_object.data, bpy.types.Armature)
+        if activeIsArmature:
+            enduser_arm = context.active_object.data
+            settings = enduser_arm.stitch_settings
+            layout.prop_search(settings, "first_action", enduser_arm, "mocapNLATracks")
+            layout.prop_search(settings, "second_action", enduser_arm, "mocapNLATracks")
+            layout.prop(settings, "blend_frame")
+            layout.prop(settings, "blend_amount")
+            layout.operator('mocap.animstitch', text="Stitch Animations")
 
 
 class OBJECT_OT_RetargetButton(bpy.types.Operator):
@@ -323,15 +363,18 @@ class OBJECT_OT_RetargetButton(bpy.types.Operator):
     bl_label = "Retargets 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]
-        scene = context.scene
+            s_frame, e_frame = performer_obj.animation_data.action.frame_range
-        s_frame = scene.frame_start
+            s_frame = int(s_frame)
-        e_frame = scene.frame_end
+            e_frame = int(e_frame)
         retarget.totalRetarget(performer_obj, enduser_obj, scene, s_frame, e_frame)
         return {"FINISHED"}
 
@@ -645,6 +688,26 @@ class OBJECT_OT_PathEditing(bpy.types.Operator):
             return False
 
 
+class OBJECT_OT_AnimationStitchingButton(bpy.types.Operator):
+    '''Stitches two defined animations into a single one via alignment of NLA Tracks'''
+    bl_idname = "mocap.animstitch"
+    bl_label = "Stitches two defined animations into a single one via alignment of NLA Tracks"
+
+    def execute(self, context):
+        mocap_tools.anim_stitch(context, context.active_object)
+        return {"FINISHED"}
+
+    @classmethod
+    def poll(cls, context):
+        activeIsArmature = False
+        if context.active_object:
+            activeIsArmature = isinstance(context.active_object.data, bpy.types.Armature)
+            if activeIsArmature:
+                stitch_settings = context.active_object.data.stitch_settings
+                return (stitch_settings.first_action and stitch_settings.second_action)
+        return False
+
+
 def register():
     bpy.utils.register_module(__name__)