/* This MouseDown event handler prints:
* (1) the current position of the mouse
* (2) the 3D mouse location on the ground plane (z = 0)
* (3) the 2D mouse location converted from the 3D location */
private void Window_MouseDown(object sender, MouseEventArgs e)
{
var range = new LineRange();
var isValid = ViewportInfo.Point2DtoPoint3D(Viewport, e.GetPosition(Viewport), out range);
if (!isValid)
{
MouseLabel.Content = "(no data)";
}
else
{
var point3D = range.PointFromZ(0);
var point = ViewportInfo.Point3DtoPoint2D(Viewport, point3D);
MouseLabel.Content = e.GetPosition(Viewport) + "\n" + point3D + "\n" + point;
}
}
public Vector To2DPoint(Point3D point)
{
return(viewPort == null ? new Vector() : ViewportInfo.Point3DtoPoint2D(viewPort, point).ToVector());
}