X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmesh.py;fp=blender%2Fio_mspgl%2Fmesh.py;h=d9ae6b760ff545c8043269bb9e120b597f8b05f7;hp=da5e76aaf34ed259d48ff5f3a0b872c32f36cdda;hb=e1d07383b29e8581230b50f45606192d1f21f5dd;hpb=f398c65c9e741ca4919a0770e096c15e8d33c1c2

diff --git a/blender/io_mspgl/mesh.py b/blender/io_mspgl/mesh.py
index da5e76aa..d9ae6b76 100644
--- a/blender/io_mspgl/mesh.py
+++ b/blender/io_mspgl/mesh.py
@@ -70,8 +70,12 @@ class Vertex:
 
 class VertexGroup:
 	def __init__(self, group):
-		self.group = group.group
-		self.weight = group.weight
+		if group:
+			self.group = group.group
+			self.weight = group.weight
+		else:
+			self.group = 0
+			self.weight = 0.0
 
 
 class Face:
@@ -162,8 +166,9 @@ class Mesh:
 
 		# Clone basic data
 		self.vertices = [Vertex(v) for v in mesh.vertices]
-		for v in self.vertices:
-			v.groups = [VertexGroup(g) for g in v.groups]
+		if self.vertex_groups:
+			for v in self.vertices:
+				v.groups = [VertexGroup(g) for g in v.groups]
 
 		self.faces = [Face(f) for f in mesh.polygons]
 		self.edges = [Edge(e) for e in mesh.edges]
@@ -172,6 +177,7 @@ class Mesh:
 
 		self.use_auto_smooth = mesh.use_auto_smooth
 		self.auto_smooth_angle = mesh.auto_smooth_angle
+		self.max_groups_per_vertex = mesh.max_groups_per_vertex
 
 		# Clone only the desired UV layers
 		if mesh.use_uv=='NONE' or not mesh.uv_layers:
@@ -371,6 +377,9 @@ class Mesh:
 		progress.pop_task()
 
 	def prepare_vertex_groups(self, obj):
+		if not self.vertex_groups:
+			return
+
 		for v in self.vertices:
 			if v.groups:
 				weight_sum = sum(g.weight for g in v.groups)
@@ -378,6 +387,8 @@ class Mesh:
 				weight_scale = weight_sum/sum(g.weight for g in v.groups)
 				for g in v.groups:
 					g.weight *= weight_scale
+			while len(v.groups)<self.max_groups_per_vertex:
+				v.groups.append(VertexGroup(None))
 
 		if obj.parent and obj.parent.type=="ARMATURE":
 			armature = obj.parent.data