//
// Calculate the intersection point in the screen coordinate system
// スクリーン座標系での交点を求める
//
public static Vector3d CrossOnScreen(DrawContext dc, Vector3d wp00, Vector3d wp01, Vector3d wp10, Vector3d wp11)
{
Vector3d sp00 = dc.WorldPointToDevPoint(wp00);
Vector3d sp01 = dc.WorldPointToDevPoint(wp01);
Vector3d sp10 = dc.WorldPointToDevPoint(wp10);
Vector3d sp11 = dc.WorldPointToDevPoint(wp11);
Vector3d cp = CadMath.CrossLine2D(sp00, sp01, sp10, sp11);
return(cp);
}
