调整齿轮吸附位置

Assets/Scripts/FixSystemNew/BodyModule/GearFollower.cs

@@ -8,6 +8,7 @@ public class GearFollower : MonoBehaviour
     public float snapDistance = 0.3f;
     public float detachDistance = 1.0f;
     public float tractionSpeed = 2f;
+    public float edgePointsScale = 1.2f;  // 边缘点缩放倍率
 
     [Header("切割轨迹")]
     public LineRenderer cutLineRenderer;
@@ -15,6 +16,7 @@ public class GearFollower : MonoBehaviour
     public float noiseAmount = 0.05f;  // 毛刺偏移幅度
 
     private List<Vector2> edgePoints;
+    private List<Vector2> originalEdgePoints;  // 存储原始边缘点
     private int currentEdgeIndex = 0;
     private int tractionDirection = 1;
 
@@ -66,6 +68,7 @@ public class GearFollower : MonoBehaviour
     private void LoadEdgePointsFromSprite()
     {
         edgePoints = new List<Vector2>();
+        originalEdgePoints = new List<Vector2>();  // 初始化原始边缘点列表
         if (targetSpriteRenderer == null)
         {
             Debug.LogError("targetSpriteRenderer 为空");
@@ -84,26 +87,42 @@ public class GearFollower : MonoBehaviour
         float desiredSegmentLength = 0.1f;
 
         edgePoints.Clear();
+        originalEdgePoints.Clear();
+
+        // 计算中心点
+        Vector2 center = Vector2.zero;
+        foreach (Vector2 point in shapePoints)
+        {
+            center += point;
+        }
+        center /= shapePoints.Count;
 
         for (int i = 0; i < shapePoints.Count; i++)
         {
             Vector2 p1 = targetSpriteRenderer.transform.TransformPoint(shapePoints[i]);
             Vector2 p2 = targetSpriteRenderer.transform.TransformPoint(shapePoints[(i + 1) % shapePoints.Count]);
 
-            float segmentLength = Vector2.Distance(p1, p2);
+            // 计算缩放后的点
+            Vector2 scaledP1 = center + (p1 - center) * edgePointsScale;
+            Vector2 scaledP2 = center + (p2 - center) * edgePointsScale;
+
+            float segmentLength = Vector2.Distance(scaledP1, scaledP2);
             int steps = Mathf.Max(1, Mathf.CeilToInt(segmentLength / desiredSegmentLength));
 
             for (int s = 0; s < steps; s++)
             {
                 float t = (float)s / steps;
-                Vector2 interpolated = Vector2.Lerp(p1, p2, t);
+                Vector2 interpolated = Vector2.Lerp(scaledP1, scaledP2, t);
+                Vector2 originalInterpolated = Vector2.Lerp(p1, p2, t);
                 edgePoints.Add(interpolated);
+                originalEdgePoints.Add(originalInterpolated);
             }
         }
 
         if ((edgePoints[0] - edgePoints[edgePoints.Count - 1]).sqrMagnitude > 0.0001f)
         {
             edgePoints.Add(edgePoints[0]);
+            originalEdgePoints.Add(originalEdgePoints[0]);
         }
 
         Debug.Log($"边缘点数量：{edgePoints.Count}");
@@ -200,8 +219,13 @@ public class GearFollower : MonoBehaviour
             transform.position += (Vector3)(moveDir.normalized * maxStep);
         }
 
+        // 使用原始边缘点来记录切割线
+        Vector2 originalFrom = originalEdgePoints[currentEdgeIndex];
+        Vector2 originalTo = originalEdgePoints[nextIndex];
+        Vector2 originalTargetPoint = GetClosestPointOnSegment(originalFrom, originalTo, transform.position);
+        
         // 记录切割点（带噪声模拟毛糙）
-        Vector3 noisyPoint = transform.position;
+        Vector3 noisyPoint = originalTargetPoint;
         noisyPoint.x += Random.Range(-noiseAmount, noiseAmount);
         noisyPoint.y += Random.Range(-noiseAmount, noiseAmount);
         AddCutPoint(noisyPoint);