private List <Line3D> GetCutRegion(List <List <Line3D> > cellList, List <Line3D> openningOutLines) { List <Line3D> resultLines = new List <Line3D>(); foreach (List <Line3D> lines in cellList) { Vector3D centriod = GetCentriod(lines); int a = GraphicAlgorithm.InsideOfRegion(centriod, openningOutLines); if (a == 1) { resultLines = lines; break; } } return(resultLines); }
/// <summary> /// 检测一个点是否在一个多边形内部 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void InsideTestBtn_Click(object sender, RoutedEventArgs e) { List <Geometry2D> gss = this.drawingKernel.GeometryShapes; List <Line2D> lines = new List <Line2D>(); List <Vector2D> vts = new List <Vector2D>(); foreach (var g in gss) { if (g is PolygonGeometry) { PolygonGeometry poly = g as DrawingKernel.Geometries.Primitives.PolygonGeometry; g.FillColor = Colors.Azure; g.Opacity = 0.3; poly.Update(); lines.AddRange(poly.Lines); } if (g is DrawingKernel.Geometries.Primitives.LineGeometry) { DrawingKernel.Geometries.Primitives.LineGeometry l = g as DrawingKernel.Geometries.Primitives.LineGeometry; vts.Add(l.Start); vts.Add(l.End); } if (g.GeometryId == "tp") { this.drawingKernel.RemoveGeometryShape(g); } } if (vts != null) { int resultP = 0; for (int i = 0; i < vts.Count; i++) { resultP = GraphicAlgorithm.InsideOfRegion(vts[i], lines); if (resultP == 0) { CircleGeometry c = new DrawingKernel.Geometries.Primitives.CircleGeometry(); c.FillColor = Colors.Red; c.Start = vts[i]; c.End = Vector2D.Create(vts[i].X + 5, vts[i].Y); c.GeometryId = "tp"; this.drawingKernel.AddShape(c); } else if (resultP == 1) { CircleGeometry c = new DrawingKernel.Geometries.Primitives.CircleGeometry(); c.FillColor = Colors.Green; c.Start = vts[i]; c.End = Vector2D.Create(vts[i].X + 5, vts[i].Y); c.GeometryId = "tp"; this.drawingKernel.AddShape(c); } else { CircleGeometry c = new DrawingKernel.Geometries.Primitives.CircleGeometry(); c.FillColor = Colors.Yellow; c.Start = vts[i]; c.End = Vector2D.Create(vts[i].X + 5, vts[i].Y); c.GeometryId = "tp"; this.drawingKernel.AddShape(c); } } } }