hy3dgen/texgen/utils/simplify_mesh_utils.py

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import trimesh


def remesh_mesh(mesh_path, remesh_path, method='trimesh'):
    if method == 'trimesh':
        mesh_simplify_trimesh(mesh_path, remesh_path)
    else:
        raise f'Method {method} has not been implemented.'


def mesh_simplify_trimesh(inputpath, outputpath):
    import pymeshlab
    ms = pymeshlab.MeshSet()
    ms.load_new_mesh(inputpath, load_in_a_single_layer=True)
    ms.save_current_mesh(outputpath.replace('.glb', '.obj'), save_textures=False)

    courent = trimesh.load(outputpath.replace('.glb', '.obj'), force='mesh')
    face_num = courent.faces.shape[0]

    if face_num > 100000:
        courent = courent.simplify_quadric_decimation(40000)
    courent.export(outputpath)