SWBF-msh-Blender-IO/addons/io_scene_swbf_msh/msh_to_blend.py

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Python
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""" Gathers the Blender objects from the current scene and returns them as a list of
Model objects. """
import bpy
import bmesh
import math
from enum import Enum
from typing import List, Set, Dict, Tuple
from itertools import zip_longest
from .msh_scene import Scene
from .msh_model import *
from .msh_model_utilities import *
from .msh_utilities import *
from .msh_model_gather import *
from .crc import *
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import os
#def import_anim(scene : Scene):
def parent_object_to_bone(obj, armature, bone_name):
bpy.ops.object.select_all(action='DESELECT')
armature.select_set(True)
bpy.context.view_layer.objects.active = armature
bpy.ops.object.mode_set(mode='EDIT')
armature.data.edit_bones.active = armature.data.edit_bones[bone_name]
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
bpy.context.view_layer.objects.active = None
obj.select_set(True)
bpy.context.view_layer.objects.active = obj
bpy.ops.object.parent_clear(type="CLEAR_KEEP_TRANSFORM")
bpy.context.view_layer.objects.active = None
obj.select_set(True)
armature.select_set(True)
bpy.context.view_layer.objects.active = armature
bpy.ops.object.mode_set(mode='POSE')
armature.pose.bones[bone_name].bone.select = True
bpy.ops.object.parent_set(type="BONE")
armature.pose.bones[bone_name].bone.select = False
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
def refined_skeleton_to_armature(refined_skeleton : List[Model], model_map):
armature = bpy.data.armatures.new("skeleton")
armature_obj = bpy.data.objects.new("skeleton", armature)
bpy.context.view_layer.active_layer_collection.collection.objects.link(armature_obj)
armature_obj.select_set(True)
bpy.context.view_layer.objects.active = armature_obj
bpy.ops.object.mode_set(mode='EDIT')
for bone in refined_skeleton:
edit_bone = armature.edit_bones.new(bone.name)
if bone.parent:
edit_bone.parent = armature.edit_bones[bone.parent]
edit_bone.head = model_map[bone.name].matrix_world.translation
bone_children = [b for b in get_model_children(bone, refined_skeleton)]
if bone_children:
edit_bone.tail = Vector((-0.00001,0.0,0.0))
for bone_child in bone_children:
edit_bone.tail += model_map[bone_child.name].matrix_world.translation
edit_bone.tail = edit_bone.tail / len(bone_children)
else:
edit_bone.tail = model_map[bone.name].matrix_world @ Vector((-0.2,0.0,0.0))
bpy.ops.object.mode_set(mode='OBJECT')
armature_obj.select_set(True)
bpy.context.view_layer.update()
return armature_obj
def extract_refined_skeleton(scene: Scene):
model_dict = {}
skeleton_models = []
for model in scene.models:
model_dict[model.name] = model
if model.geometry:
for seg in model.geometry:
if seg.weights:
for weight_set in seg.weights:
for weight in weight_set:
model_weighted_to = scene.models[weight.bone]
if crc(model_weighted_to.name) not in scene.skeleton:
scene.skeleton.append(crc(model_weighted_to.name))
for model in scene.models:
if crc(model.name) in scene.skeleton:
skeleton_models.append(model)
refined_skeleton_models = []
for bone in skeleton_models:
if bone.parent:
curr_ancestor = model_dict[bone.parent]
stacked_transform = model_transform_to_matrix(bone.transform)
while True:
if crc(curr_ancestor.name) in scene.skeleton or curr_ancestor.name == scene.models[0].name:
new_model = Model()
new_model.name = bone.name
print("Adding {} to refined skeleton...".format(bone.name))
new_model.parent = curr_ancestor.name if curr_ancestor.name != scene.models[0].name else ""
loc, rot, _ = stacked_transform.decompose()
new_model.transform.rotation = rot
new_model.transform.translation = loc
refined_skeleton_models.append(new_model)
break
else:
curr_ancestor = model_dict[curr_ancestor.parent]
stacked_transform = model_transform_to_matrix(curr_ancestor.transform) @ stacked_transform
return sort_by_parent(refined_skeleton_models)
def extract_models(scene: Scene, materials_map):
model_map = {}
for model in sort_by_parent(scene.models):
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new_obj = None
if model.model_type == ModelType.STATIC or model.model_type == ModelType.SKIN:
new_mesh = bpy.data.meshes.new(model.name)
verts = []
faces = []
offset = 0
mat_name = ""
full_texcoords = []
weights_offsets = {}
for i,seg in enumerate(model.geometry):
if i == 0:
mat_name = seg.material_name
verts += [tuple(convert_vector_space(v)) for v in seg.positions]
if seg.weights:
weights_offsets[offset] = seg.weights
if seg.texcoords is not None:
full_texcoords += seg.texcoords
else:
full_texcoords += [(0.0,0.0) for _ in range(len(seg.positions))]
if seg.triangles:
faces += [tuple([ind + offset for ind in tri]) for tri in seg.triangles]
else:
for strip in seg.triangle_strips:
for i in range(len(strip) - 2):
face = tuple([offset + strip[j] for j in range(i,i+3)])
faces.append(face)
offset += len(seg.positions)
new_mesh.from_pydata(verts, [], faces)
new_mesh.update()
new_mesh.validate()
if full_texcoords:
edit_mesh = bmesh.new()
edit_mesh.from_mesh(new_mesh)
uvlayer = edit_mesh.loops.layers.uv.verify()
for edit_mesh_face in edit_mesh.faces:
mesh_face = faces[edit_mesh_face.index]
for i,loop in enumerate(edit_mesh_face.loops):
texcoord = full_texcoords[mesh_face[i]]
loop[uvlayer].uv = tuple([texcoord.x, texcoord.y])
edit_mesh.to_mesh(new_mesh)
edit_mesh.free()
new_obj = bpy.data.objects.new(new_mesh.name, new_mesh)
vertex_groups_indicies = {}
for offset in weights_offsets:
for i, weight_set in enumerate(weights_offsets[offset]):
for weight in weight_set:
index = weight.bone
if index not in vertex_groups_indicies:
model_name = scene.models[index].name
vertex_groups_indicies[index] = new_obj.vertex_groups.new(name=model_name)
vertex_groups_indicies[index].add([offset + i], weight.weight, 'ADD')
'''
Assign Materials - will do per segment later...
'''
if mat_name:
material = materials_map[mat_name]
if new_obj.data.materials:
new_obj.data.materials[0] = material
else:
new_obj.data.materials.append(material)
else:
new_obj = bpy.data.objects.new(model.name, None)
new_obj.empty_display_size = 1
new_obj.empty_display_type = 'PLAIN_AXES'
model_map[model.name] = new_obj
if model.parent:
new_obj.parent = model_map[model.parent]
new_obj.location = convert_vector_space(model.transform.translation)
new_obj.rotation_mode = "QUATERNION"
new_obj.rotation_quaternion = convert_rotation_space(model.transform.rotation)
bpy.context.collection.objects.link(new_obj)
return model_map
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def extract_materials(folder_path: str, scene: Scene) -> Dict[str,bpy.types.Material]:
extracted_materials = {}
for material_name in scene.materials.keys():
new_mat = bpy.data.materials.new(name=material_name)
new_mat.use_nodes = True
bsdf = new_mat.node_tree.nodes["Principled BSDF"]
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tex_path_def = os.path.join(folder_path, scene.materials[material_name].texture0)
tex_path_alt = os.path.join(folder_path, "PC", scene.materials[material_name].texture0)
tex_path = tex_path_def if os.path.exists(tex_path_def) else tex_path_alt
if os.path.exists(tex_path):
texImage = new_mat.node_tree.nodes.new('ShaderNodeTexImage')
texImage.image = bpy.data.images.load(tex_path)
new_mat.node_tree.links.new(bsdf.inputs['Base Color'], texImage.outputs['Color'])
extracted_materials[material_name] = new_mat
return extracted_materials
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def extract_scene(filepath: str, scene: Scene):
folder = os.path.join(os.path.dirname(filepath),"")
matmap = extract_materials(folder, scene)
model_map = extract_models(scene, matmap)
skel = extract_refined_skeleton(scene)
armature = refined_skeleton_to_armature(skel, model_map)
reparent_obj = None
for model in scene.models:
if model.model_type == ModelType.SKIN:
if model.parent:
reparent_obj = model_map[model.parent]
skin_obj = model_map[model.name]
skin_obj.select_set(True)
armature.select_set(True)
bpy.context.view_layer.objects.active = armature
bpy.ops.object.parent_clear(type='CLEAR')
bpy.ops.object.parent_set(type='ARMATURE')
skin_obj.select_set(False)
armature.select_set(False)
bpy.context.view_layer.objects.active = None
print("About to parent to bones....")
if armature is not None:
for bone in armature.data.bones:
for model in scene.models:
if model.parent in armature.data.bones and model.name not in armature.data.bones:
parent_object_to_bone(model_map[model.name], armature, model.parent)
print("Done parenting to bones")
'''
if reparent_obj is not None and armature.name != reparent_obj.name:
armature.select_set(True)
reparent_obj.select_set(True)
bpy.context.view_layer.objects.active = reparent_obj
bpy.ops.object.parent_set(type='OBJECT')
armature.select_set(False)
reparent_obj.select_set(False)
bpy.context.view_layer.objects.active = None
for model in scene.models:
if model.name in bpy.data.objects:
obj = bpy.data.objects[model.name]
if get_is_model_hidden(obj) and len(obj.children) == 0:
obj.hide_set(True)
'''
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