public static void DrawArrow(DiagramPainter dp, Graphics g, int x1, int y1, int x2, int y2, ReferenceStyle.ArrowStyle style)
{
Point2D a = new Point2D(x1, y1);
Point2D b = new Point2D(x2, y2);
float len = (a - b).Size;
Point2D e = b + (a - b) * (style.DistanceFromEnd / len); // vrchol sipky
Point2D f = b + (a - b) * ((style.DistanceFromEnd + style.Length - style.Delta) / len); // konec sipky
Vector2D n = (b - a).NormalVector.Normalized;
Point2D p = b + (a - b) * ((style.DistanceFromEnd + style.Length) / len); // pata sipky
Point2D s = p + n * (style.Width / 2); //jedno kridlo sipky
Point2D t = p - n * (style.Width / 2); //druhe kridlo sipky
PointF[] triangle = new PointF[3];
g.FillPolygon(dp.GetSolidBrush(style.Color), new PointF[] { e, f, s });
g.FillPolygon(dp.GetSolidBrush(style.Color), new PointF[] { e, f, t });
}
public static void DrawArrow(DiagramPainter dp, Graphics g, Point a, Point b, ReferenceStyle.ArrowStyle style)
{
DrawArrow(dp, g, a.X, a.Y, b.X, b.Y, style);
}