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:
# 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]
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:
# Merge materials and form a lookup from source material indices to the
# merged material list
- material_map = []
+ material_atlas = []
for m in other.materials:
if m in self.materials:
- material_map.append(self.materials.index(m))
+ material_atlas.append(self.materials.index(m))
else:
- material_map.append(len(self.materials))
+ material_atlas.append(len(self.materials))
self.materials.append(m)
# Append data and adjust indices where necessary. Since the data is
f.index += offset
f.loop_indices = range(f.loop_indices.start+offset, f.loop_indices.stop+offset)
if other.materials:
- f.material_index = material_map[f.material_index]
+ f.material_index = material_atlas[f.material_index]
offset = len(self.edges)
self.edges += other.edges
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)
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
for g in v.groups:
g.group = group_index_map[g.group]
- def apply_material_map(self, material_map):
+ def apply_material_atlas(self, material_atlas):
for m in self.materials:
- if m.name not in material_map.material_names:
- raise Exception("Material map is not compatible with Mesh")
+ if m.name not in material_atlas.material_names:
+ raise Exception("Material atlas is not compatible with Mesh")
if self.use_uv=='NONE':
return
- layer = UvLayer("material_map")
+ layer = UvLayer("material_atlas")
if self.use_uv=='UNIT0':
self.uv_layers = [layer]
layer.unit = 0
layer.uvs = [(0.0, 0.0)]*len(self.loops)
for f in self.faces:
- uv = material_map.get_material_uv(self.materials[f.material_index])
+ uv = material_atlas.get_material_uv(self.materials[f.material_index])
for i in f.loop_indices:
layer.uvs[i] = uv
e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
-def create_mesh_from_object(context, obj, progress, *, material_map=None):
+def create_mesh_from_object(context, obj, progress, *, material_atlas=None):
if obj.type!="MESH":
raise Exception("Object is not a mesh")
mesh.name = obj.data.name
- if material_map:
- mesh.apply_material_map(material_map)
+ if material_atlas:
+ mesh.apply_material_atlas(material_atlas)
progress.set_task("Triangulating", 0.2, 0.3)
mesh.prepare_triangles(progress)