feat: evolve portfolio into an authored midnight grand tour

assets/blender/evolution/export-grand-tourer.py

@@ -0,0 +1,39 @@
+"""Export the current authored Portfolio Evolution scene. Run inside Blender."""
+import bpy
+from pathlib import Path
+root_path = Path(__file__).resolve().parents[3]
+scene = bpy.data.scenes["Portfolio Evolution"]
+# A separate export scene combines geometry by material: eight runtime draw groups.
+export_scene = bpy.data.scenes.new('Evolution Export')
+bpy.context.window.scene = export_scene
+root = bpy.data.objects.new('evolution-chase-car', None)
+export_scene.collection.objects.link(root)
+names = {'M_Body_Gunmetal': 'car-body', 'M_Body_Haunch': 'body-haunches', 'M_Glass_Smoke': 'rear-glass', 'M_Rear_Light': 'rear-light-bar', 'M_Cyan_Accent': 'car-underglow-source', 'M_Lower_Graphite': 'body-trim', 'M_Wheel': 'wheel-machining', 'M_Tire': 'tires'}
+bpy.context.window.scene = scene
+depsgraph = bpy.context.evaluated_depsgraph_get()
+groups = {}
+for obj in scene.objects:
+    if obj.type != 'MESH' or obj.name.startswith('LOOKDEV'):
+        continue
+    evaluated = obj.evaluated_get(depsgraph)
+    mesh = bpy.data.meshes.new_from_object(evaluated, depsgraph=depsgraph)
+    mesh.transform(obj.matrix_world)
+    clone = bpy.data.objects.new('export-' + obj.name, mesh)
+    export_scene.collection.objects.link(clone)
+    key = obj.data.materials[0].name.split('.')[0]
+    groups.setdefault(key, []).append(clone)
+bpy.context.window.scene = export_scene
+for key, objects in groups.items():
+    bpy.ops.object.select_all(action='DESELECT')
+    for obj in objects:
+        obj.select_set(True)
+    bpy.context.view_layer.objects.active = objects[0]
+    if len(objects) > 1:
+        bpy.ops.object.join()
+    joined = bpy.context.object
+    joined.name = 'evolution-' + names[key]
+    joined.parent = root
+bpy.ops.object.select_all(action='SELECT')
+bpy.ops.export_scene.gltf(filepath=str(root_path / 'src/assets/nightdrive-grand-tourer-evolution.glb'), export_format='GLB', use_selection=True, use_active_scene=True, export_apply=True, export_animations=False, export_cameras=False, export_lights=False)
+print('Exported', len(groups), 'material groups')
+bpy.context.window.scene = scene