- A+
所属分类:.NET技术
核心思路是使用Region的求交集和并集的结果与原始Region对比
Winform项目自带这个类库,如果使用控制台,需要先在nuget安装System.Drawing.Common
/// <summary> /// 计算两个形状的关系 /// </summary> /// <param name="rgn1">形状1</param> /// <param name="rgn2">形状2</param> /// <returns></returns> private string CalculateShapeRelationship(Region rgn1, Region rgn2) { RectangleF[] rect1 = rgn1.GetRegionScans(new Matrix()); //将形状切片 RectangleF[] rect2 = rgn2.GetRegionScans(new Matrix()); if (Enumerable.SequenceEqual(rect1, rect2)) //如果两个形状切片结果相同,则为重叠 return "重叠"; using (Region rgnIntersect = rgn1.Clone()) { rgnIntersect.Intersect(rgn2); //求交集 RectangleF[] rectIntersect = rgnIntersect.GetRegionScans(new Matrix());//将交集切片 if (rectIntersect.Length == 0) //如果交集切片没有结果则两个形状没有交集 return "相离"; } using (Region rgnUnion = rgn1.Clone()) { rgnUnion.Union(rgn2); //求并集 RectangleF[] rectUnion = rgnUnion.GetRegionScans(new Matrix()); //将并集切片 if (rectUnion.Length == rect1.Length) //如果区域1和并集一样 return "区域1包含区域2"; if (rectUnion.Length == rect2.Length) //如果区域2和并集一样 return "区域2包含区域1"; return "相交"; //两个都只占并集的一部分,则为相交 } }
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