/// <summary>
/// Function to render the symbol
/// </summary>
/// <param name="map">The map</param>
/// <param name="point">The point to symbolize</param>
/// <param name="g">The graphics object</param>
protected void RenderPoint(MapViewport map, Coordinate point, Graphics g)
{
if (point == null)
{
return;
}
PointF pp = map.WorldToImage(point);
if (Rotation != 0f && !Single.IsNaN(Rotation))
{
SizeF offset = GetOffset();
PointF rotationCenter = pp;
using (var origTrans = g.Transform.Clone())
using (var t = g.Transform)
{
t.RotateAt(Rotation, rotationCenter);
t.Translate(offset.Width + 1, offset.Height + 1);
g.Transform = t;
OnRenderInternal(pp, g);
g.Transform = origTrans;
}
using (var symTrans = new Matrix())
{
symTrans.RotateAt(Rotation, rotationCenter);
symTrans.Translate(offset.Width + 1, offset.Height + 1);
var pts = CanvasArea.ToPointArray();
symTrans.TransformPoints(pts);
CanvasArea = pts.ToRectangleF();
}
}
else
{
pp = PointF.Add(pp, GetOffset());
OnRenderInternal(pp, g);
}
}
