private void ClipPolygons()
{
if (Polygons.Count != 2)
{
throw new InvalidOperationException("Clipping is only possible for two and exactly two polygons");
}
if (Clipper == null)
{
throw new InvalidOperationException("No polygon clipper set");
}
var resultPolygon = Clipper.GetIntersectedPolygon(Polygons[0].Points, Polygons[1].Points);
if (resultPolygon.IsEmpty)
{
DialogHandler?.ShowMessageBox("No overlap");
}
else
{
Polygons.Clear();
var color = GenerateRandomColor();
Polygons.Add(new Polygon
{
Description = "Clipped Polygon",
Points = resultPolygon,
StrokeColor = color,
FillColor = Color.FromArgb(128, color)
});
}
}