private void DrawEdgeSpline(PointF p1, PointF p2, PointF p3, PointF p4, float d, D2dBrush brush, D2dGraphics g)
{
g.DrawBezier(p1, p2, p3, p4, brush, m_theme.StrokeWidth);
float arrowScale = (float)ArrowSize / d;
float dx = (p3.X - p4.X) * arrowScale;
float dy = (p3.Y - p4.Y) * arrowScale;
DrawArrow(g, brush, p4, dx, dy);
}
/// <summary>
/// Draws the eye icon</summary>
/// <param name="g">The D2dGraphics graphics object</param>
/// <param name="rect">The rectangle to fit the eye icon in</param>
/// <param name="pen">The pen used to draw the icon</param>
/// <param name="strokeWidth">Width of the stroke</param>
public static void DrawEyeIcon(this D2dGraphics g, RectangleF rect, D2dBrush pen, float strokeWidth)
{
float delta = rect.Width / 3;
var p1 = new PointF(rect.X, rect.Y + rect.Height / 2);
var p2 = new PointF(p1.X + delta, rect.Y);
var p3 = new PointF(p1.X + 2 * delta, rect.Y);
var p4 = new PointF(rect.X + rect.Width, rect.Y + rect.Height / 2);
g.DrawBezier(p1, p2, p3, p4, pen, strokeWidth);// top lid
p2 = new PointF(p2.X, rect.Y + rect.Height);
p3 = new PointF(p3.X, rect.Y + rect.Height);
g.DrawBezier(p1, p2, p3, p4, pen, strokeWidth); //bottom lid
var irisCenter = new PointF(rect.X + rect.Width / 2, rect.Y + rect.Height / 2);
float irisRadius = 0.2f * Math.Min(rect.Width, rect.Height);
var irisRect = new RectangleF(irisCenter.X - irisRadius, irisCenter.Y - irisRadius, 2 * irisRadius, 2 * irisRadius);
g.DrawEllipse(irisRect, pen, strokeWidth * 1.8f);
}