private void Cut(object sender, RoutedEventArgs e)
{
Status.Text = "裁剪结果";
ResetButton();
ButtonCut.Background = new SolidColorBrush(Colors.DodgerBlue);
var polylineLst = ArbitraryPolygonCut.Cut(_polyS.PointList, _polyC.PointList);
if (polylineLst.Count == 0)
{
MessageBox.Show("没有交点");
return;
}
foreach (var pointLst in polylineLst)
{
var polyResult = new MyPolygon(RenderType.Polygon)
{
StrokeColor = Colors.Transparent,
StrokeThickess = 0,
FillColor = Color.FromArgb(80, 30, 144, 255),
Filled = true
};
polyResult.PointList.AddRange(pointLst);
polyResult.Render(Canvas);
}
}
private bool IsCloseToPolygon(Point mousePoint, MyPolygon polygon, ref Point nearestPoint)
{
var pointCount = polygon.PointList.Count;
if (pointCount < 3)
{
return(false);
}
for (int i = 0; i < polygon.PointList.Count; i++)
{
var vertex1 = polygon.PointList[i % pointCount];
var vertex2 = polygon.PointList[(i + 1) % pointCount];
var result = IsCloseTo(mousePoint, vertex1.ToPoint(), vertex2.ToPoint(), ref nearestPoint);
if (result)
{
return(true);
}
}
return(false);
}
private bool IsCloseToPolygon(Point mousePoint, MyPolygon polygon, ref Point nearestPoint)
{
var pointCount = polygon.PointList.Count;
if (pointCount < 3)
return false;
for (int i = 0; i < polygon.PointList.Count; i++)
{
var vertex1 = polygon.PointList[i% pointCount];
var vertex2 = polygon.PointList[(i + 1)%pointCount];
var result = IsCloseTo(mousePoint, vertex1.ToPoint(), vertex2.ToPoint(),ref nearestPoint);
if (result)
return true;
}
return false;
}
private void Cut(object sender, RoutedEventArgs e)
{
Status.Text = "裁剪结果";
ResetButton();
ButtonCut.Background = new SolidColorBrush(Colors.DodgerBlue);
var polylineLst = ArbitraryPolygonCut.Cut(_polyS.PointList, _polyC.PointList);
if (polylineLst.Count == 0)
{
MessageBox.Show("没有交点");
return;
}
foreach (var pointLst in polylineLst)
{
var polyResult = new MyPolygon(RenderType.Polygon)
{
StrokeColor = Colors.Transparent,
StrokeThickess = 0,
FillColor = Color.FromArgb(80, 30, 144, 255),
Filled = true
};
polyResult.PointList.AddRange(pointLst);
polyResult.Render(Canvas);
}
}