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>
2026-07-23 10:10:45 +08:00
parent 44060ac3cb
commit 0481f10b8c
6 changed files with 103 additions and 6 deletions
@@ -0,0 +1,39 @@
+import os
+import sys
+import unittest
+from unittest import mock
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import model_decimate
+
+
+class TestModelDecimateCli(unittest.TestCase):
+    def test_default_reducer_is_quad(self):
+        summary = {
+            "src": "store.fbx",
+            "tris_before": 49966,
+            "tris_after": 3000,
+            "target": 3000,
+            "reducer": "quad",
+            "uv": {
+                "mode": "seam",
+                "islands": 1,
+                "fill": 1.0,
+                "flipped": 0.0,
+                "overlap": 0.0,
+            },
+            "warnings": [],
+        }
+        argv = ["model_decimate.py", "store.fbx", "--tris", "3000"]
+
+        with mock.patch.object(sys, "argv", argv), \
+             mock.patch.object(model_decimate, "find_blender", return_value="blender"), \
+             mock.patch.object(model_decimate, "run_blender_script", return_value=summary) as run:
+            model_decimate.main()
+
+        args = run.call_args.args[2]
+        self.assertEqual(args[-1], "quad")
+
+
+if __name__ == "__main__":
+    unittest.main()