"""
Opens the rigged doors in a background Blender before another script runs (pictures of them open); the file is
not saved. The rig is build/doors.py.

    set DOORS_OPEN=0.6
    blender -b Anchorage_Station_exterior.blend --python build/doors_pose.py --python build/bl_render.py -- ...

DOORS_OPEN: 0 shut .. 1 open, for every door's own slider (the timeline stays at frame 1, where it keeps them shut).
"""
import os

import bpy

value = float(os.environ.get("DOORS_OPEN", "1.0"))
n = 0
for ob in bpy.data.objects:
    if ob.get("anchorage_rig") == "doors" and "open" in ob.keys():
        ob["open"] = value
        ob.update_tag()
        n += 1
bpy.context.scene.frame_set(1)
print("[doors] %d doors set open %.2f for this run" % (n, value))