68 lines
3.3 KiB
Python
68 lines
3.3 KiB
Python
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# lena_leafbikini lane, stage 06: open a lane mesh in the Blender GUI, framed and shaded.
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#
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# blender --python 06_open_in_blender.py -- <mesh.glb>
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#
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# Runs inside a GUI session, NOT --background, and deliberately NOT --factory-startup: the
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# TinqsBlenderBridge autostarts from scripts/startup (tools/install_blender_bridge.ps1), and
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# factory startup would skip it, leaving the session undriveable from the terminal afterwards.
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#
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# TWO THINGS THIS SCRIPT LEARNED THE HARD WAY, both consequences of `--python` running BEFORE
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# Blender's window exists:
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# 1. `bpy.context.screen` is None at this point, so any viewport setup here dies with
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# AttributeError. All of it is deferred onto an app timer, which first fires once the UI
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# is up and can therefore see the 3D View.
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# 2. `bpy.ops.wm.read_homefile()` kills the bridge — the startup module has already
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# registered its socket server by now, and reloading the file takes it down with no
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# autostart to bring it back. The default cube/light/camera are removed by hand instead.
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#
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# Material Preview, not Solid: the point of looking at this file is the boundary between the
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# holes and her skin, and in Solid shading the baked leaf contact shadows in the albedo are
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# invisible — which is half of what makes the rim read the way it does.
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import bpy, sys, os
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GLB = os.path.abspath(sys.argv[sys.argv.index("--") + 1:][0])
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for o in list(bpy.data.objects):
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if o.name in {"Cube", "Light", "Camera"}:
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bpy.data.objects.remove(o, do_unlink=True)
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bpy.ops.import_scene.gltf(filepath=GLB)
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body = max([o for o in bpy.data.objects if o.type == 'MESH'], key=lambda o: len(o.data.vertices))
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bpy.context.view_layer.objects.active = body
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for o in bpy.data.objects:
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o.select_set(o is body)
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print(f"[open] {os.path.basename(GLB)}: {len(body.data.vertices)}v {len(body.data.polygons)}f",
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flush=True)
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def setup_viewport():
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"""Fires once, after the window exists."""
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screen = getattr(bpy.context, "screen", None)
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if screen is None:
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return 0.25 # UI not up yet — ask the timer to call again
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for area in screen.areas:
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if area.type != 'VIEW_3D':
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continue
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sp = area.spaces.active
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sp.shading.type = 'MATERIAL'
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sp.shading.use_scene_lights = False
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sp.shading.use_scene_world = False
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sp.overlay.show_floor = False
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sp.overlay.show_axis_x = sp.overlay.show_axis_y = False
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sp.overlay.show_relationship_lines = False
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sp.clip_start = 0.001
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sp.clip_end = 100.0
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region = next((r for r in area.regions if r.type == 'WINDOW'), None)
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if region:
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with bpy.context.temp_override(area=area, region=region, space_data=sp):
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# BACK, not FRONT. These lane GLBs are exported with export_yup=True and come
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# back in facing +Y, so Blender's FRONT view (looking from -Y) puts you behind
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# her — which is the wrong side for judging a cut that is mostly on her front.
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bpy.ops.view3d.view_axis(type='BACK')
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bpy.ops.view3d.view_selected()
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print("[open] viewport ready — Material Preview, framed on her front", flush=True)
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return None # done; unregister
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bpy.app.timers.register(setup_viewport, first_interval=0.5)
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