修正点在多段线方向,在点在圆弦上的时候,判断错误的问题.

__test__/Polyline/PtInPolylineDir.test.ts

@@ -182,3 +182,16 @@ test('首尾点相等', () =>
     expect(isR).toBeFalsy();
 
 });
+
+test('点在圆弧的弦中心上', () =>
+{
+    let f = new CADFile();
+    f.Data =
+        [1, ["Polyline", 1, 1, 264, false, 7, -1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 2, 6, [0, 0], 0, [5, 0], 0.9999999999999999, [5, 5], -0.9999999999999999, [5, 10], 0, [0, 10], 0, [0, 0], 0, false]]
+    f.Read();
+    let pl = f.ReadObject() as Polyline;
+
+    let pt = new Vector3().fromArray([4.999999999999999, 2.5, 0]);
+    let isR = GetPointAtCurveDir(pl, pt);
+    expect(isR).toBeFalsy();
+});

src/Common/CurveUtils.ts

@@ -331,7 +331,7 @@ function PointInPolylineArc(pl: Polyline, index: number, pt: Vector3): number
 
     let arc = pl.GetCurveAtIndex(index) as Arc;
 
-    if (IsPointInBowArc(arc, pt))
+    if (IsPointInBowArc(arc, pt, true))
         return Math.sign(bul);
 
     return 0;

src/DatabaseServices/PointInPolyline.ts

@@ -31,15 +31,19 @@ function IsPointInCircularSector(arc: Arc, pt: Vector3): boolean
  * 
  * @param {Arc} arc 二维圆弧
  * @param {Vector3} pt 点
+ * @param {boolean} isInChrodIsTrue 当点在弦上也认为在弓形内部
  * @returns {boolean} 点在内部
  */
-export function IsPointInBowArc(arc: Arc, pt: Vector3): boolean
+export function IsPointInBowArc(arc: Arc, pt: Vector3, isInChrodIsTrue = false): boolean
 {
     let pv = pt.clone().sub(arc.StartPoint);
     let av = arc.EndPoint.sub(arc.StartPoint);
 
     pv.cross(av);
 
+    if (isInChrodIsTrue && equaln(pv.z, 0))
+        return true;
+
     //未优化的代码
     // if (pv.z > 0 && arc.IsClockWise)
     //     return false;