public static Point? GetNearest(Circle2D c, Point p)
{
Ray2D r = new Ray2D(c.Center, p);
return GetNearest(r.Intersection(c), p);
}
public static IList<Point> GetIntersects(ISegment line1, IRay line2)
{
IList<Point> list = new List<Point>();
Ray2D Ray = new Ray2D(line1.StartPoint, line1.EndPoint);
IList<Point> intersect = line2.Intersection(Ray);
if (intersect.Count > 0 && (
intersect[0].X > Math.Min(line1.StartPoint.X, line1.EndPoint.X)
&& intersect[0].X < Math.Max(line1.StartPoint.X, line1.EndPoint.X)
&& intersect[0].Y > Math.Min(line1.StartPoint.Y, line1.EndPoint.Y)
&& intersect[0].Y < Math.Max(line1.StartPoint.Y, line1.EndPoint.Y)
)
)
{
list.Add(intersect[0]);
}
return list;
}
