Import orphaned transforms

io_scene_a3d/A3DBlenderExporter.py

@@ -46,6 +46,17 @@ class A3DBlenderExporter:
         objects = []
         for ob in self.objects:
             me = ob.data
+            if me == None:
+                # Create a transform for this object without the object itself
+                transform = A3DObjects.A3DTransform()
+                transform.position = ob.location
+                rotationW, rotationX, rotationY, rotationZ = ob.rotation_quaternion
+                transform.rotation = (rotationX, rotationY, rotationZ, rotationW)
+                transform.scale = ob.scale
+                transform.name = ob.name
+                transforms[ob.name] = transform
+                
+                continue
 
             # Process materials
             for ma in me.materials:
@@ -128,8 +139,12 @@ class A3DBlenderExporter:
             uv1Vertices[i2] = uv1Data.uv[polygon.loop_start+2].vector
         uv1Buffer.data = uv1Vertices
 
-        mesh.vertexBufferCount = 3 #XXX: We only do coordinate, normal1 and uv1
-        mesh.vertexBuffers = [coordinateBuffer, uv1Buffer, normal1Buffer]
+        normal2Buffer = A3DObjects.A3DVertexBuffer()
+        normal2Buffer.bufferType = A3D_VERTEXTYPE_NORMAL2
+        normal2Buffer.data = normal1Buffer.data
+
+        mesh.vertexBufferCount = 4 #XXX: We only do coordinate, normal1 and uv1
+        mesh.vertexBuffers = [coordinateBuffer, uv1Buffer, normal1Buffer, normal2Buffer]
 
         # Create submeshes
         indexArrays = {} # material_index: index array

io_scene_a3d/A3DBlenderImporter.py

@@ -39,7 +39,7 @@ def mirrorUVY(uv):
     return (x, 1-y)
 
 class A3DBlenderImporter:
-    def __init__(self, modelData, directory, reset_empty_transform=True, try_import_textures=True):
+    def __init__(self, modelData, directory, reset_empty_transform=True, try_import_textures=True, import_unused_transforms=True):
         self.modelData = modelData
         self.directory = directory
         self.materials = []
@@ -48,6 +48,7 @@ class A3DBlenderImporter:
         # User settings
         self.reset_empty_transform = reset_empty_transform
         self.try_import_textures = try_import_textures
+        self.import_unused_transforms = import_unused_transforms
 
     def importData(self):
         print("Importing A3D model data into blender")
@@ -79,6 +80,37 @@ class A3DBlenderImporter:
                 continue
             parentOB = objects[parentID]
             ob.parent = parentOB
+        if self.import_unused_transforms:
+            # First identify which transforms have not been used
+            unusedTransformIndices = list(
+                range(len(self.modelData.transforms))
+            )
+            print(unusedTransformIndices)
+            for objectData in self.modelData.objects:
+                unusedTransformIndices.remove(objectData.transformID)
+            
+            # Create empty objects for each transform
+            for transformID in unusedTransformIndices:
+                transformData = self.modelData.transforms[transformID]
+                ob = bpy.data.objects.new(transformData.name, None)
+                ob.empty_display_size = 10
+                ob.location = transformData.position
+                ob.rotation_mode = "QUATERNION"
+                x, y, z, w = transformData.rotation
+                ob.rotation_quaternion = (w, x, y, z)
+                ob.scale = transformData.scale
+                objects.append(ob)
+
+                # Assign parent
+                parentID = self.modelData.transformParentIDs[transformID]
+                if self.modelData.version < 3:
+                    # version 2 models use 0 to signify empty parent
+                    parentID -= 1
+                if parentID == -1:
+                    # empty parent
+                    continue
+                parentOB = objects[parentID]
+                ob.parent = parentOB
 
         return objects