ModelTranslator: adaptive ray distance pure functions

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Tools/ModelTranslator/tests/test_bl_bake.py

@@ -43,5 +43,40 @@ class TestBboxMismatch(unittest.TestCase):
         self.assertFalse(bb.bbox_mismatch((1.0, 0.0, 3.0), (1.0, 0.0, 3.0)))
 
 
+class TestPercentile(unittest.TestCase):
+    def test_interpolates(self):
+        self.assertAlmostEqual(bb.percentile([0.0, 10.0], 0.25), 2.5)
+
+    def test_rejects_empty(self):
+        with self.assertRaises(ValueError):
+            bb.percentile([], 0.99)
+
+    def test_rejects_bad_q(self):
+        with self.assertRaises(ValueError):
+            bb.percentile([1.0], 1.1)
+
+
+class TestAdaptiveRayDistance(unittest.TestCase):
+    def test_p99_with_safety(self):
+        r = bb.adaptive_ray_distance([0.002] * 20, (1.0, 0.0, 0.0))
+        self.assertAlmostEqual(r["distance_p99"], 0.002)
+        self.assertAlmostEqual(r["value"], 0.003)   # 0.002*1.5，未夹
+        self.assertFalse(r["capped"])
+
+    def test_lower_floor(self):
+        r = bb.adaptive_ray_distance([0.0], (1.0, 0.0, 0.0))
+        self.assertAlmostEqual(r["value"], 0.0005)  # 下限 0.05%
+        self.assertFalse(r["capped"])
+
+    def test_upper_cap(self):
+        r = bb.adaptive_ray_distance([0.02], (1.0, 0.0, 0.0))
+        self.assertAlmostEqual(r["value"], 0.01)    # 夹到 1% 上限
+        self.assertTrue(r["capped"])
+
+    def test_zero_bbox_raises(self):
+        with self.assertRaises(ValueError):
+            bb.adaptive_ray_distance([0.01], (0.0, 0.0, 0.0))
+
+
 if __name__ == "__main__":
     unittest.main()