BVH Анимация Скиннинг ⇐ Python

[Anonymous]

Я довольно новичок в методах блендера и ретаргетинга, однако я ищу способ объявленного движением кожи. Файл. < /p>
Однако, когда я пытаюсь перенести анимацию, кожа из FBX деформирована. Я немного смущен, так как я не нашел слишком много информации о том, как это сделать правильно. < /P>
Я был бы очень благодарен за любую помощь!

import bpy
import sys
import numpy as np
import argparse
import os

def clean_scene():
bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete()

def load_fbx(source):
bpy.ops.import_scene.fbx(filepath=source)

def load_bvh(source):
bpy.ops.import_anim.bvh(filepath=source)
return source.split('/')[-1][:-4]

def extract_weight(me):
verts = me.data.vertices
vgrps = me.vertex_groups

weight = np.zeros((len(verts), len(vgrps)))
mask = np.zeros(weight.shape, dtype=int)
vgrp_label = vgrps.keys()

for i, vert in enumerate(verts):
for g in vert.groups:
j = g.group
weight[i, j] = g.weight
mask[i, j] = 1

return weight, vgrp_label, mask

def clean_vgrps(me):
vgrps = me.vertex_groups
for _ in range(len(vgrps)):
vgrps.remove(vgrps[0])

def load_weight(me, label, weight):
clean_vgrps(me)
verts = me.data.vertices
vgrps = me.vertex_groups

for name in label:
vgrps.new(name=name)

for j in range(weight.shape[1]):
idx = vgrps.find(label[j])
if idx == -1:
continue
for i in range(weight.shape[0]):
vgrps[idx].add(, weight[i, j], 'REPLACE')

def set_modifier(me, arm):
modifiers = me.modifiers
for modifier in modifiers:
if modifier.type == 'ARMATURE':
modifier.object = arm
modifier.use_vertex_groups = True
modifier.use_deform_preserve_volume = True
return

modifier = modifiers.new(name='Armature', type='ARMATURE')
modifier.object = arm
modifier.use_vertex_groups = True
modifier.use_deform_preserve_volume = True

def adapt_weight(source_weight, source_label, source_arm, dest_arm):
dest_bone_names = {bone.name for bone in dest_arm.data.bones}

# Check for exact matches only
missing_bones = [name for name in source_label if name not in dest_bone_names]
if missing_bones:
print("\n[ERROR] The following vertex group names were not found in the destination armature bones:")
for name in missing_bones:
print(f" - {name}")
raise ValueError("Aborting weight transfer due to missing bones.")

# Proceed with safe mapping
weight = np.zeros((source_weight.shape[0], len(dest_arm.data.bones)))
dest_bone_index = {bone.name: i for i, bone in enumerate(dest_arm.data.bones)}

for j, name in enumerate(source_label):
idx = dest_bone_index[name]
weight[:, idx] += source_weight[:, j]

return weight

def main():
parser = argparse.ArgumentParser()
parser.add_argument('--fbx_file', type=str, required=True, help='path of skinned model fbx file')
parser.add_argument('--bvh_file', type=str, required=True, help='path of animation bvh file')

if "--" not in sys.argv:
argv = []
else:
argv = sys.argv[sys.argv.index("--") + 1:]

args = parser.parse_args(argv)

clean_scene()

load_fbx(args.fbx_file)
source_arm = bpy.data.objects['Armature']
source_arm.scale = [1.0, 1.0, 1.0]

bvh_name = load_bvh(args.bvh_file)
dest_arm = bpy.data.objects[bvh_name]
dest_arm.scale = source_arm.scale

bpy.context.view_layer.update()

meshes = [obj for obj in bpy.data.objects if obj.type == 'MESH']

for mesh in meshes:
weight, label, _ = extract_weight(mesh)
weight = adapt_weight(weight, label, source_arm, dest_arm)
load_weight(mesh, dest_arm.data.bones.keys(), weight)
set_modifier(mesh, dest_arm)
bpy.context.view_layer.update()

# source_arm.hide_viewport = True

if __name__ == "__main__":
main()


Подробнее здесь: https://stackoverflow.com/questions/796 ... n-skinning