def _process_bones(self, parent_node, group, object_, armature):
id_ = "{!s}_{!s}".format(armature.name, object_.name)
controller_node = self._doc.createElement("controller")
parent_node.appendChild(controller_node)
controller_node.setAttribute("id", id_)
skin_node = self._doc.createElement("skin")
skin_node.setAttribute(
"source", "#{!s}".format(utils.get_geometry_name(group, object_)))
controller_node.appendChild(skin_node)
bind_shape_matrix = self._doc.createElement("bind_shape_matrix")
utils.write_matrix(Matrix(), bind_shape_matrix)
skin_node.appendChild(bind_shape_matrix)
self._process_bone_joints(object_, armature, skin_node, group)
self._process_bone_matrices(object_, armature, skin_node)
self._process_bone_weights(object_, armature, skin_node)
joints = self._doc.createElement("joints")
input = utils.write_input(id_, None, "joints", "JOINT")
joints.appendChild(input)
input = utils.write_input(id_, None, "matrices", "INV_BIND_MATRIX")
joints.appendChild(input)
skin_node.appendChild(joints)
def _write_triangle_list(self, object_, bmesh_, mesh_node, geometry_name):
tessfaces = utils.get_tessfaces(bmesh_)
current_material_index = 0
for material, materialname in self._m_exporter.get_materials_for_object(
object_).items():
triangles = ''
triangle_count = 0
normal_uv_index = 0
for face in bmesh_.faces:
norm_uv_indices = {}
for index in range(0, len(face.verts)):
norm_uv_indices[str(
face.verts[index].index)] = normal_uv_index + index
if face.material_index == current_material_index:
for tessface in tessfaces[face.index]:
triangle_count += 1
for vert in tessface:
normal_uv = norm_uv_indices[str(vert)]
dae_vertex = self._write_vertex_data(
vert, normal_uv, normal_uv,
object_.data.vertex_colors)
triangles = join(triangles, dae_vertex)
normal_uv_index += len(face.verts)
current_material_index += 1
if triangle_count == 0:
continue
triangle_list = self._doc.createElement('triangles')
triangle_list.setAttribute('material', materialname)
triangle_list.setAttribute('count', str(triangle_count))
inputs = []
inputs.append(utils.write_input(geometry_name, 0, 'vtx', 'VERTEX'))
inputs.append(
utils.write_input(geometry_name, 1, 'normal', 'NORMAL'))
inputs.append(
utils.write_input(geometry_name, 2, 'uvs', 'TEXCOORD'))
if object_.data.vertex_colors:
inputs.append(
utils.write_input(geometry_name, 3, 'vcol', 'COLOR'))
for input in inputs:
triangle_list.appendChild(input)
p = self._doc.createElement('p')
p_text = self._doc.createTextNode(triangles)
p.appendChild(p_text)
triangle_list.appendChild(p)
mesh_node.appendChild(triangle_list)
def _process_bone_weights(self, object_, armature, skin_node):
bones = utils.get_bones(armature)
group_weights = []
vw = ""
vertex_groups_lengths = ""
vertex_count = 0
bone_list = {}
for bone_id, bone in enumerate(bones):
bone_list[bone.name] = bone_id
for vertex in object_.data.vertices:
vertex_group_count = 0
for group in vertex.groups:
group_name = object_.vertex_groups[group.group].name
if (group.weight == 0 or
group_name not in bone_list):
continue
if vertex_group_count == 8:
bcPrint("Too many bone references in {}:{} vertex group"
.format(object_.name, group_name))
continue
group_weights.append(group.weight)
vw = "{}{} {} ".format(vw, bone_list[group_name], vertex_count)
vertex_count += 1
vertex_group_count += 1
vertex_groups_lengths = "{}{} ".format(vertex_groups_lengths,
vertex_group_count)
id_ = "{!s}_{!s}-weights".format(armature.name, object_.name)
source = utils.write_source(id_, "float", group_weights, [])
skin_node.appendChild(source)
vertex_weights = self._doc.createElement("vertex_weights")
vertex_weights.setAttribute("count", str(len(object_.data.vertices)))
id_ = "{!s}_{!s}".format(armature.name, object_.name)
input = utils.write_input(id_, 0, "joints", "JOINT")
vertex_weights.appendChild(input)
input = utils.write_input(id_, 1, "weights", "WEIGHT")
vertex_weights.appendChild(input)
vcount = self._doc.createElement("vcount")
vcount_text = self._doc.createTextNode(vertex_groups_lengths)
vcount.appendChild(vcount_text)
vertex_weights.appendChild(vcount)
v = self._doc.createElement("v")
v_text = self._doc.createTextNode(vw)
v.appendChild(v_text)
vertex_weights.appendChild(v)
skin_node.appendChild(vertex_weights)
def _write_vertices(self, mesh_node, geometry_name):
vertices = self._doc.createElement("vertices")
vertices.setAttribute("id", "{}-vtx".format(geometry_name))
input = utils.write_input(geometry_name, None, "pos", "POSITION")
vertices.appendChild(input)
mesh_node.appendChild(vertices)