58 lines
2.2 KiB
Python
58 lines
2.2 KiB
Python
"""Blender 内运行：校验低模 FBX 的 UV 质量门；无 UV 或不达标就地 seam 重展并覆盖导出。
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调用：blender -b --factory-startup --python bl_uvgate.py -- <low.fbx> [mode_label]
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mode_label 仅用于日志/回退警告中标注上游展开方式（默认 rizom）。"""
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import os
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import sys
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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def main():
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import bpy
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import json
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from bl_decimate import (join_meshes, uv_gate_ok, _collect_uv_metrics,
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_do_unwrap)
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argv = sys.argv[sys.argv.index("--") + 1:]
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fbx = argv[0]
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mode_label = argv[1] if len(argv) > 1 else "rizom"
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warnings = []
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bpy.ops.wm.read_factory_settings(use_empty=True)
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bpy.ops.import_scene.fbx(filepath=fbx)
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meshes = [o for o in bpy.data.objects if o.type == 'MESH']
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if not meshes:
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print("MT_SUMMARY " + json.dumps({"error": "FBX 中没有 mesh"},
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ensure_ascii=False))
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return
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obj = join_meshes(meshes)
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if obj.data.uv_layers:
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m = _collect_uv_metrics(obj)
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if uv_gate_ok(m["flipped"], m["overlap"]):
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m["mode"] = mode_label
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print("MT_SUMMARY " + json.dumps(
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{"uv": m, "reexported": False, "warnings": warnings},
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ensure_ascii=False))
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return
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warnings.append("%s UV 质量不达标（翻转 %.1f%% 重叠 %s），回退 seam"
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% (mode_label, m["flipped"] * 100,
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"%.1f%%" % (m["overlap"] * 100)
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if m["overlap"] is not None else "未知"))
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else:
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warnings.append("%s 输出无 UV，回退 seam" % mode_label)
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m = _do_unwrap(obj, "seam", warnings) # 内部自带 smart 回退
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if m["mode"] == "seam":
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m["mode"] = "seam_fallback"
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bpy.ops.object.select_all(action='DESELECT')
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obj.select_set(True)
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bpy.ops.export_scene.fbx(filepath=os.path.abspath(fbx), use_selection=True,
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path_mode='STRIP', embed_textures=False)
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print("MT_SUMMARY " + json.dumps(
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{"uv": m, "reexported": True, "warnings": warnings},
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ensure_ascii=False))
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if __name__ == "__main__" and "--" in sys.argv:
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main()
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