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Assets/Scripts/Test/Light/New/ShadowCollider.cs

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+using UnityEngine;
+using System.Collections.Generic;
+
+public class ShadowCollider : MonoBehaviour
+{
+    [Header("阴影碰撞器")]
+    public GameObject sourceObject;
+    public PolygonCollider2D polygonCollider;
+
+    [Header("调试")]
+    public bool showGizmos = true;
+    public Color gizmoColor = new Color(1, 0, 0, 0.3f);
+
+    public void Initialize(List<List<Vector2>> contours)
+    {
+        polygonCollider = GetComponent<PolygonCollider2D>();
+        if (polygonCollider == null)
+            polygonCollider = gameObject.AddComponent<PolygonCollider2D>();
+
+        UpdateCollider(contours);
+    }
+
+    public void UpdateCollider(List<List<Vector2>> contours)
+    {
+        if (polygonCollider == null) return;
+
+        polygonCollider.pathCount = contours.Count;
+        for (int i = 0; i < contours.Count; i++)
+        {
+            polygonCollider.SetPath(i, contours[i].ToArray());
+        }
+    }
+
+#if UNITY_EDITOR
+    void OnDrawGizmos()
+    {
+        if (!showGizmos || polygonCollider == null) return;
+
+        Gizmos.color = gizmoColor;
+        Vector3 offset = transform.forward * 0.01f;
+
+        for (int pathIndex = 0; pathIndex < polygonCollider.pathCount; pathIndex++)
+        {
+            var path = polygonCollider.GetPath(pathIndex);
+            for (int i = 0; i < path.Length; i++)
+            {
+                Vector3 point1 = transform.TransformPoint(path[i]);
+                Vector3 point2 = transform.TransformPoint(path[(i + 1) % path.Length]);
+                Gizmos.DrawLine(point1 + offset, point2 + offset);
+            }
+        }
+    }
+#endif
+}