修正问题

src/graphic/ListenLayer.js

@@ -21,7 +21,7 @@ export default class ListenLayer {
 
   //开始监听，exceptVectorIds表示不考虑的元素
   /**
-   * 
+   *
    * @param exceptVectorIds：{
           exceptPointId,
           exceptLineId,
@@ -34,8 +34,8 @@ export default class ListenLayer {
           exceptCrossCrossPointId,
           exceptTextId,
           exceptSVGId,
-  }  
-   * @returns 
+  }
+   * @returns
    */
   start(position, exceptVectorIds) {
     let flag = false;
@@ -996,8 +996,8 @@ export default class ListenLayer {
     return magnifierInfo;
   }
   /**
-    * 
-    * @param info:{ 
+    *
+    * @param info:{
         roadPointInfo,
         curveRoadPointInfo,
         roadEdgeInfo,
@@ -1005,7 +1005,7 @@ export default class ListenLayer {
         crossPointInfo,
         pointInfo,
         roadPointInfo
-      }  
+      }
     */
   setModifyPoint(position, info) {
     //优先级最高
@@ -1353,7 +1353,9 @@ export default class ListenLayer {
   }
 
   distanceForBezier(position, curves, width) {
-    return mathUtil.getHitInfoForCurves(position, curves, width);
+
+    const data = mathUtil.getHitInfoForCurves(position, curves, width);
+    return data
   }
 
   equalAndClone(info1, info2) {

src/graphic/Renderer/Draw.js

@@ -674,6 +674,16 @@ export default class Draw {
       for (let coves of midCovesArray) {
         help.drawCoves(ctx, coves);
       }
+
+
+      midCovesArray = help.transformCoves([
+        vector.curves,
+      ]);
+      ctx.strokeStyle = 'red'
+      for (let coves of midCovesArray) {
+        help.drawCoves(ctx, coves);
+      }
+
     }
     ctx.restore();
 

src/graphic/Util/MathUtil.js

@@ -1451,7 +1451,41 @@ export default class MathUtil {
   }
 
   getHitInfoForThreeBezier(position, curve, rang = 3) {
+    // 定义三次贝塞尔曲线的控制点和目标点
+    var p0 = curve.start;
+    var p1 = curve.controls[0];
+    var p2 = curve.controls[1];
+    var p3 = curve.end;
+    var target = position
+
+// 参数化方式在曲线上取一系列的点
+    var pointsOnCurve = [];
+    for (var t = 0; t <= 1; t += 0.01) {
+      var x = Math.pow(1 - t, 3) * p0.x + 3 * Math.pow(1 - t, 2) * t * p1.x + 3 * (1 - t) * Math.pow(t, 2) * p2.x + Math.pow(t, 3) * p3.x;
+      var y = Math.pow(1 - t, 3) * p0.y + 3 * Math.pow(1 - t, 2) * t * p1.y + 3 * (1 - t) * Math.pow(t, 2) * p2.y + Math.pow(t, 3) * p3.y;
+      pointsOnCurve.push({ x: x, y: y });
+    }
+
+// 计算每个点与目标点的距离
+    var shortestDistance = Number.MAX_VALUE;
+    var closestPoint;
+    for (var i = 0; i < pointsOnCurve.length; i++) {
+      var distance = Math.sqrt(Math.pow(pointsOnCurve[i].x - target.x, 2) + Math.pow(pointsOnCurve[i].y - target.y, 2));
+      if (distance < shortestDistance) {
+        shortestDistance = distance;
+        closestPoint = pointsOnCurve[i];
+      }
+    }
+    return {
+      position: closestPoint,
+      distance: shortestDistance,
+    }
+
+    console.log("最短距离:", shortestDistance);
+    console.log("最近点:", closestPoint);
+
     const { x: offsetX, y: offsetY } = position;
+    let results = []
     // 用 x 求出对应的 t，用 t 求相应位置的 y，再比较得出的 y 与 offsetY 之间的差值
     const tsx = this.getThreeBezierT(
       curve.start.x,
@@ -1460,6 +1494,7 @@ export default class MathUtil {
       curve.end.x,
       offsetX
     );
+    console.log(tsx)
     for (let x = 0; x < 3; x++) {
       if (tsx[x] <= 1 && tsx[x] >= 0) {
         const point = this.getThreeBezierPoint(
@@ -1469,12 +1504,12 @@ export default class MathUtil {
           curve.controls[1],
           curve.end
         );
-        if (Math.abs(point.y - offsetY) < rang) {
-          return {
+        // if (Math.abs(point.y - offsetY) < rang) {
+          results.push({
             position: point,
             distance: this.getDistance(point, position),
-          };
-        }
+          });
+        // }
       }
     }
     // 如果上述没有结果，则用 y 求出对应的 t，再用 t 求出对应的 x，与 offsetX 进行匹配
@@ -1494,14 +1529,17 @@ export default class MathUtil {
           curve.controls[1],
           curve.end
         );
-        if (Math.abs(point.x - offsetX) < rang) {
-          return {
+        // if (Math.abs(point.x - offsetX) < rang) {
+          results.push({
             position: point,
             distance: this.getDistance(point, position),
-          };
-        }
+          });
+        // }
       }
     }
+
+    console.log(results)
+    return results.sort((a, b) => a.distance - b.distance)[0]
   }
 
   // 二次曲线
@@ -1515,6 +1553,7 @@ export default class MathUtil {
     bezierData.push(curve.end.y);
     const { isHit, getInfo } = bezierUtil.measureBezier(...bezierData);
     const { point } = getInfo(position);
+
     return {
       position: {
         x: point[0],