Hartmut
c054236d22
The initial implementation only overrode the material_map dict in the task, but the Blender USD primvar path bypassed it. Now: - Added --material-override named CLI arg parsed in _blender_args.py - Both Mode A (factory) and Mode B (template) in _blender_scene_setup.py override usd_material_lookup and material_map when set - Passed through full chain: task → step_processor → render_blender → CLI → Blender - Tested: 175-part bearing rendered with single Steel-Bare material (1/1 materials) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
187 lines
7.7 KiB
Python
187 lines
7.7 KiB
Python
"""MODE A / MODE B scene setup for blender_render.py.
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MODE A — factory settings (no template): auto-camera + auto-lights
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MODE B — template file: load .blend, import into named collection
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"""
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import time as _time
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from typing import Callable
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import bpy # type: ignore[import]
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from _blender_camera import setup_auto_camera, setup_auto_lights
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from _blender_import import import_glb, apply_rotation, import_usd_file
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from _blender_materials import (
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assign_failed_material,
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build_mat_map_lower,
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apply_material_library,
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apply_material_library_direct,
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)
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from _blender_scene import (
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ensure_collection,
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apply_smooth_batch,
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apply_sharp_edges_from_occ,
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setup_shadow_catcher,
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)
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def setup_scene(args, lap_fn: Callable[[str], None]) -> None:
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"""Set up the Blender scene according to args (MODE A or B).
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Handles import, rotation, smooth shading, material assignment, shadow
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catcher, and auto-camera/lights. lap_fn is called with a label string
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at each timing checkpoint.
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"""
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if args.use_template:
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_setup_mode_b(args, lap_fn)
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else:
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_setup_mode_a(args)
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def _setup_mode_b(args, lap_fn: Callable[[str], None]) -> None:
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"""MODE B: Template-based render — load .blend, import into collection."""
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print(f"[blender_render] Opening template: {args.template_path}")
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bpy.ops.wm.open_mainfile(filepath=args.template_path)
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lap_fn("template_load")
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target_col = ensure_collection(args.target_collection)
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usd_material_lookup: dict = {}
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if args.usd_path:
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parts, usd_material_lookup = import_usd_file(args.usd_path)
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else:
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parts = import_glb(args.glb_path)
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lap_fn("glb_import")
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apply_rotation(parts, args.rotation_x, args.rotation_y, args.rotation_z)
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lap_fn("rotation")
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for part in parts:
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for col in list(part.users_collection):
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col.objects.unlink(part)
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target_col.objects.link(part)
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apply_smooth_batch(parts, args.smooth_angle)
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if not args.usd_path:
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_occ_pairs = args.mesh_attributes.get("sharp_edge_pairs") or []
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if _occ_pairs:
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apply_sharp_edges_from_occ(parts, _occ_pairs)
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lap_fn("smooth_shading")
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# Apply material override: replace all material lookups with a single material
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if getattr(args, 'material_override', None):
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print(f"[blender_render] material_override active: all parts → {args.material_override}", flush=True)
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if usd_material_lookup:
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usd_material_lookup = {k: args.material_override for k in usd_material_lookup}
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if args.material_map:
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args.material_map = {k: args.material_override for k in args.material_map}
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if args.material_library_path and usd_material_lookup:
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# USD primvar path: direct material assignment (no name-matching needed)
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apply_material_library_direct(
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parts, args.material_library_path, usd_material_lookup,
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)
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# Fall back to name-matching for any parts missing primvars
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if args.material_map:
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_unassigned = [p for p in parts if not p.data.materials or
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(len(p.data.materials) == 1 and
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p.data.materials[0] and
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p.data.materials[0].name == "SCHAEFFLER_059999_FailedMaterial")]
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if _unassigned:
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print(f"[blender_render] {len(_unassigned)} parts without USD primvar — "
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f"falling back to name-matching", flush=True)
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apply_material_library(
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_unassigned, args.material_library_path,
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build_mat_map_lower(args.material_map), args.part_names_ordered,
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)
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elif args.material_library_path and args.material_map:
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apply_material_library(
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parts, args.material_library_path,
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build_mat_map_lower(args.material_map), args.part_names_ordered,
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)
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else:
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for part in parts:
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assign_failed_material(part)
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lap_fn("material_assign")
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if args.shadow_catcher:
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setup_shadow_catcher(parts)
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needs_auto_camera = (
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(args.lighting_only and not args.shadow_catcher)
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or not bpy.context.scene.camera
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)
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if args.lighting_only and not args.shadow_catcher:
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print("[blender_render] lighting_only mode: using template World/HDRI, forcing auto-camera")
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elif needs_auto_camera:
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print("[blender_render] WARNING: template has no camera — will create auto-camera")
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if not needs_auto_camera and bpy.context.scene.camera:
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bpy.context.scene.camera.data.clip_start = 0.001
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print(f"[blender_render] template mode: {len(parts)} parts imported into collection '{args.target_collection}'")
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if needs_auto_camera:
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setup_auto_camera(parts, args.width, args.height,
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lens_mm=args.focal_length_mm,
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sensor_width_mm=args.sensor_width_mm)
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def _setup_mode_a(args) -> None:
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"""MODE A: Factory settings — auto-camera + auto-lights."""
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bpy.ops.wm.read_factory_settings(use_empty=True)
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usd_material_lookup: dict = {}
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if args.usd_path:
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parts, usd_material_lookup = import_usd_file(args.usd_path)
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else:
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parts = import_glb(args.glb_path)
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apply_rotation(parts, args.rotation_x, args.rotation_y, args.rotation_z)
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_t = _time.time()
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apply_smooth_batch(parts, args.smooth_angle)
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if not args.usd_path:
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_occ_pairs = args.mesh_attributes.get("sharp_edge_pairs") or []
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if _occ_pairs:
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apply_sharp_edges_from_occ(parts, _occ_pairs)
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for part in parts:
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assign_failed_material(part)
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print(f"[blender_render] smooth+fallback-material: {len(parts)} parts ({_time.time()-_t:.2f}s)", flush=True)
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# Apply material override: replace all material lookups with a single material
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if getattr(args, 'material_override', None):
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print(f"[blender_render] material_override active (Mode A): all parts → {args.material_override}", flush=True)
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if usd_material_lookup:
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usd_material_lookup = {k: args.material_override for k in usd_material_lookup}
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if args.material_map:
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args.material_map = {k: args.material_override for k in args.material_map}
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if args.material_library_path and usd_material_lookup:
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# USD primvar path: direct material assignment
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apply_material_library_direct(
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parts, args.material_library_path, usd_material_lookup,
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)
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# Fall back to name-matching for parts without primvars
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if args.material_map:
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_unassigned = [p for p in parts if not p.data.materials or
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(len(p.data.materials) == 1 and
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p.data.materials[0] and
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p.data.materials[0].name == "SCHAEFFLER_059999_FailedMaterial")]
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if _unassigned:
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apply_material_library(
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_unassigned, args.material_library_path,
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build_mat_map_lower(args.material_map), args.part_names_ordered,
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)
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elif args.material_library_path and args.material_map:
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apply_material_library(
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parts, args.material_library_path,
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build_mat_map_lower(args.material_map), args.part_names_ordered,
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)
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bbox_center, bsphere_radius = setup_auto_camera(parts, args.width, args.height,
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lens_mm=args.focal_length_mm,
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sensor_width_mm=args.sensor_width_mm)
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setup_auto_lights(bbox_center, bsphere_radius)
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world = bpy.data.worlds.new("World")
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bpy.context.scene.world = world
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world.use_nodes = True
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bg = world.node_tree.nodes["Background"]
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bg.inputs["Color"].default_value = (0.96, 0.96, 0.97, 1.0)
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bg.inputs["Strength"].default_value = 0.15
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