"""Writes build/kazah_objects.json: the visible mesh objects of the Tender file, so the interior build can link
exactly those for the picture.   blender -b --factory-startup models/Kazah-stern-cavity-fixedv4.blend --python build/list_kazah.py"""
import json
import os

import bpy
from mathutils import Vector

names = [o.name for o in bpy.context.scene.objects if o.type == "MESH" and o.visible_get()]
lo = Vector((1e9, 1e9, 1e9))
hi = Vector((-1e9, -1e9, -1e9))
for n in names:
    o = bpy.data.objects[n]
    for c in o.bound_box:
        p = o.matrix_world @ Vector(c)
        lo = Vector((min(lo.x, p.x), min(lo.y, p.y), min(lo.z, p.z)))
        hi = Vector((max(hi.x, p.x), max(hi.y, p.y), max(hi.z, p.z)))
with open(os.path.join(os.path.dirname(os.path.abspath(__file__)), "kazah_objects.json"), "w", encoding="utf-8") as f:
    json.dump(names, f, indent=0)
print("KAZAH %d visible meshes, bounds %s .. %s" % (len(names), [round(v, 2) for v in lo], [round(v, 2) for v in hi]))