static void canvas_EvRedraw(object sender, RedrawEventArgs e)
{
var p = e.Painter;
p.Clear(0);
Ellipse2d el1 = new Ellipse2d(new Point2d(mousex, mousey), 200, 5, 1.0);
Ellipse2d el2 = new Ellipse2d(new Point2d(400, 500), 300, 5, -1);
p.Color = RGB.Red;
p.DrawEllipse(el1.Center.X, el1.Center.Y, el1.MajorRadius, el1.MinorRadius, el1.Rotation);
p.Color = RGB.Green;
p.DrawEllipse(el2.Center.X, el2.Center.Y, el2.MajorRadius, el2.MinorRadius, el2.Rotation);
var intpts = Intersect2d.EllipseEllipse(el1, el2);
if (intpts != null)
{
p.Color = RGB.Yellow;
foreach (Point2d pt in intpts)
{
p.DrawMark(pt.X, pt.Y, MarkType.DiagonalCross, 10);
}
}
}
public static void Run()
{
Ellipse2d elp1 = new Ellipse2d(new Point2d(0, 0), 10.0, 10.0);
Ellipse2d elp2 = new Ellipse2d(new Point2d(0, 0), 20.0, 10.0);
GeneralConic2d con1 = elp1.ToGeneralConic();
GeneralConic2d con2 = elp2.ToGeneralConic();
Intersect2d.ConicConic(con1, con2);
}