ModelTranslator: QR watertightness gate + quad default
根因(真机排查):QuadRemesher 引擎在激进减面下非确定性地从封闭流形 输入打出孔洞/非流形边(实测同一输入约 85% 次数破碎),即"破碎面"。 修复:QR 导回后比对输入拓扑,若比输入新增开边(孔洞)/非流形边即判破损、 弃用 QR 回退 collapse(topology_acceptable 纯策略+单测;_edge_defects 计数)。 顺带修复水密门在导入后拒绝时未恢复 obj 选中态,导致 collapse 回退时 export use_selection 选不到对象、只导出 4KB 空 FBX 的 bug。 含用户改动:--reducer 默认改为 quad(配合水密门,破碎自动回退,安全), 及其 CLI 默认值测试。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Claude Opus 4.8
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@@ -116,5 +116,30 @@ class TestFindQrEngine(unittest.TestCase):
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self.assertIn(os.path.join("5.0", "scripts"), chosen)
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class TestTopologyAcceptable(unittest.TestCase):
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def test_closed_source_clean_qr_ok(self):
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# 封闭输入(0/0) + 水密 QR(0/0) -> 接受
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self.assertTrue(qb.topology_acceptable(0, 0, 0, 0))
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def test_closed_source_holey_qr_rejected(self):
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# 封闭输入被 QR 打出开边 -> 拒绝
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self.assertFalse(qb.topology_acceptable(0, 0, 8, 0))
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def test_closed_source_nonmanifold_qr_rejected(self):
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self.assertFalse(qb.topology_acceptable(0, 0, 0, 1))
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def test_open_shell_source_same_ok(self):
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# 输入本身是开放壳(10 开边),QR 未新增 -> 接受
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self.assertTrue(qb.topology_acceptable(10, 0, 10, 0))
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def test_open_shell_source_worse_rejected(self):
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# QR 比输入引入更多开边 -> 拒绝
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self.assertFalse(qb.topology_acceptable(10, 0, 12, 0))
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def test_qr_fewer_defects_ok(self):
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# QR 输出反而更少缺陷(不劣于输入)-> 接受
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self.assertTrue(qb.topology_acceptable(10, 2, 8, 1))
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if __name__ == "__main__":
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unittest.main()
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