/// <summary>
/// 一个多边形和另外一个多边形之间的关系
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void PolygonInsideTestBtn_Click(object sender, RoutedEventArgs e)
{
List <Geometry2D> gss = this.drawingKernel.GeometryShapes;
List <List <Line2D> > lines = new List <List <Line2D> >();
foreach (var g in gss)
{
if (g is PolygonGeometry)
{
List <Line2D> nlines = new List <Line2D>();
PolygonGeometry poly = g as DrawingKernel.Geometries.Primitives.PolygonGeometry;
g.FillColor = Colors.Azure;
g.Opacity = 0.3;
poly.Update();
nlines.AddRange(poly.Lines);
lines.Add(nlines);
}
if (g.GeometryId == "tp")
{
this.drawingKernel.RemoveGeometryShape(g);
}
}
//计算多边形和多边形之间的关系
if (lines.Count == 2)
{
List <List <Line2D> > ins = new List <List <Line2D> >();
var result = GraphicAlgorithm.PolygonInsideOfRegion(lines[0], lines[1], ins);
if (result == 1)
{
ins.ForEach(x => {
PolygonGeometry pg = new PolygonGeometry();
x.ForEach(y => { pg.PPoints.Add(y.Start); });
pg.FillColor = Colors.Green;
pg.GeometryId = "tp";
this.drawingKernel.AddShape(pg);
});
}
else if (result == 0)
{
ins.ForEach(x => {
PolygonGeometry pg = new PolygonGeometry();
x.ForEach(y => { pg.PPoints.Add(y.Start); });
pg.FillColor = Colors.Red;
pg.GeometryId = "tp";
this.drawingKernel.AddShape(pg);
});
}
else
{
MessageBox.Show("相离");
}
}
else
{
MessageBox.Show("不表现多个多边形的情况");
}
}