Implement the Filter Transform modifier

This causes an object to be given a plFilterCoordInterface instead of a
plCoordinateInterface. The difference is that plFilterCoordInterface
will reject changes to certain components of an object's transform. This
is useful in certain parenting situations, namely subworlds.

korman/exporter/convert.py

@@ -191,7 +191,8 @@ class Exporter:
         if so is None:
             so = self.mgr.find_create_object(plSceneObject, bl=bl)
         if so.coord is None:
-            ci = self.mgr.add_object(plCoordinateInterface, bl=bl, so=so)
+            ci_cls = bl.plasma_object.ci_type
+            ci = self.mgr.add_object(ci_cls, bl=bl, so=so)
 
             # Now we have the "fun" work of filling in the CI
             ci.localToWorld = utils.matrix44(bl.matrix_basis)

korman/properties/modifiers/anim.py

@@ -104,6 +104,49 @@ class AnimGroupObject(idprops.IDPropObjectMixin, bpy.types.PropertyGroup):
         return {"child_anim": "object_name"}
 
 
+class PlasmaAnimationFilterModifier(PlasmaModifierProperties):
+    pl_id = "animation_filter"
+
+    bl_category = "Animation"
+    bl_label = "Filter Transform"
+    bl_description = "Filter animation components"
+    bl_icon = "UNLINKED"
+
+    no_rotation = BoolProperty(name="Filter Rotation",
+                               description="Filter rotations",
+                               options=set())
+
+    no_transX = BoolProperty(name="Filter X Translation",
+                             description="Filter the X component of translations",
+                             options=set())
+    no_transY = BoolProperty(name="Filter Y Translation",
+                             description="Filter the Y component of translations",
+                             options=set())
+    no_transZ = BoolProperty(name="Filter Z Translation",
+                             description="Filter the Z component of translations",
+                             options=set())
+
+    def export(self, exporter, bo, so):
+        # By this point, the object should already have a plFilterCoordInterface
+        # created by the converter. Let's test that assumption.
+        coord = so.coord.object
+        assert isinstance(coord, plFilterCoordInterface)
+
+        # Apply filtercoordinterface properties
+        if self.no_rotation:
+            coord.filterMask |= plFilterCoordInterface.kNoRotation
+        if self.no_transX:
+            coord.filterMask |= plFilterCoordInterface.kNoTransX
+        if self.no_transY:
+            coord.filterMask |= plFilterCoordInterface.kNoTransY
+        if self.no_transZ:
+            coord.filterMask |= plFilterCoordInterface.kNoTransZ
+
+    @property
+    def requires_actor(self):
+        return True
+
+
 class PlasmaAnimationGroupModifier(ActionModifier, PlasmaModifierProperties):
     pl_id = "animation_group"
     pl_depends = {"animation"}

korman/properties/prop_object.py

@@ -52,6 +52,13 @@ class PlasmaObject(bpy.types.PropertyGroup):
                              default=False,
                              options={"HIDDEN"})
 
+    @property
+    def ci_type(self):
+        if self.id_data.plasma_modifiers.animation_filter.enabled:
+            return plFilterCoordInterface
+        else:
+            return plCoordinateInterface
+
     @property
     def has_animation_data(self):
         bo = self.id_data

korman/ui/modifiers/anim.py

@@ -42,6 +42,18 @@ def animation(modifier, layout, context):
         col.prop_search(modifier, "loop_start", action, "pose_markers", icon="PMARKER")
         col.prop_search(modifier, "loop_end", action, "pose_markers", icon="PMARKER")
 
+def animation_filter(modifier, layout, context):
+    split = layout.split()
+
+    col = split.column()
+    col.label("Translation:")
+    col.prop(modifier, "no_transX", text="Filter X")
+    col.prop(modifier, "no_transY", text="Filter Y")
+    col.prop(modifier, "no_transZ", text="Filter Z")
+
+    col = split.column()
+    col.label("Rotation:")
+    col.prop(modifier, "no_rotation", text="Filter Rotation")
 
 class GroupListUI(bpy.types.UIList):
     def draw_item(self, context, layout, data, item, icon, active_data, active_property, index=0, flt_flag=0):