"""Dump rest-pose local matrices for look-at target bones in armature.glb."""
import sys

import bpy

glb = sys.argv[sys.argv.index("--") + 1]
bpy.ops.wm.read_factory_settings(use_empty=True)
bpy.ops.import_scene.gltf(filepath=glb)
for obj in bpy.data.objects:
    if obj.type == "ARMATURE":
        for name in ("Head", "neck_01", "spine_02", "spine_03"):
            b = obj.data.bones.get(name)
            if b is None:
                print(name, "MISSING")
                continue
            # matrix_local: bone rest transform in armature space.
            m = b.matrix_local
            print(name, "head:", [round(v, 3) for v in b.head_local])
            for row in range(3):
                print("   ", [round(m[row][c], 3) for c in range(4)])