/// <summary>
/// Draws a point at the given location.
/// </summary>
/// <param name="ptX">X-Coordinate of the point, that should be drawn.</param>
/// <param name="ptY">Y-Coordinate of the point, that should be drawn.</param>
/// <param name="e">MapArgs for calculating the scaleSize.</param>
/// <param name="ps">PointSymbolizer with which the point gets drawn.</param>
/// <param name="g">Graphics-Object that should be used by the PointSymbolizer.</param>
/// <param name="origTransform">The original transformation that is used to position the point.</param>
private void DrawPoint(double ptX, double ptY, MapArgs e, IPointSymbolizer ps, Graphics g, Matrix origTransform)
{
var x = Convert.ToInt32((ptX - e.MinX) * e.Dx);
var y = Convert.ToInt32((e.MaxY - ptY) * e.Dy);
double scaleSize = ps.GetScale(e);
Matrix shift = origTransform.Clone();
shift.Translate(x, y);
g.Transform = shift;
ps.Draw(g, scaleSize);
}
/// <summary>
/// Draws a point at the given location.
/// </summary>
/// <param name="ptX">X-Coordinate of the point, that should be drawn.</param>
/// <param name="ptY">Y-Coordinate of the point, that should be drawn.</param>
/// <param name="e">MapArgs for calculating the scaleSize.</param>
/// <param name="ps">PointSymbolizer with which the point gets drawn.</param>
/// <param name="g">Graphics-Object that should be used by the PointSymbolizer.</param>
/// <param name="origTransform">The original transformation that is used to position the point.</param>
/// <param name="clockwiseAngle">clockwiseAngle.</param>
private void DrawPoint(double ptX, double ptY, MapArgs e, IPointSymbolizer ps, Graphics g, Matrix origTransform, float clockwiseAngle)
{
var pt = new PointF
{
X = Convert.ToSingle((ptX - e.MinX) * e.Dx),
Y = Convert.ToSingle((e.MaxY - ptY) * e.Dy)
};
double scaleSize = ps.GetScale(e);
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
shift.Rotate(clockwiseAngle);
g.Transform = shift;
ps.Draw(g, scaleSize);
}
/// <summary>
/// Draws a point at the given location.
/// </summary>
/// <param name="ptX">X-Coordinate of the point, that should be drawn.</param>
/// <param name="ptY">Y-Coordinate of the point, that should be drawn.</param>
/// <param name="e">MapArgs for calculating the scaleSize.</param>
/// <param name="ps">PointSymbolizer with which the point gets drawn.</param>
/// <param name="g">Graphics-Object that should be used by the PointSymbolizer.</param>
/// <param name="origTransform">The original transformation that is used to position the point.</param>
private void DrawPoint(double ptX, double ptY, MapArgs e, IPointSymbolizer ps, Graphics g, Matrix origTransform)
{
var pt = new Point
{
X = Convert.ToInt32((ptX - e.MinX) * e.Dx),
Y = Convert.ToInt32((e.MaxY - ptY) * e.Dy)
};
double scaleSize = ps.GetScale(e);
// CGX
if (MapFrame != null && (MapFrame as IMapFrame).ReferenceScale > 1.0 && (MapFrame as IMapFrame).CurrentScale > 0.0)
{
double dReferenceScale = (MapFrame as IMapFrame).ReferenceScale;
double dCurrentScale = (MapFrame as IMapFrame).CurrentScale;
scaleSize = dReferenceScale / dCurrentScale;
} // Fin CGX
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
g.Transform = shift;
ps.Draw(g, scaleSize);
}
private static Bitmap GetSymbolizerBitmap(IPointSymbolizer symbolizer, IProj e)
{
if (symbolizer == null) return null;
var scaleSize = symbolizer.GetScale(e);
var size = symbolizer.GetSize();
if (size.Width * scaleSize < 1 || size.Height * scaleSize < 1) return null;
var bitmap = new Bitmap((int)(size.Width * scaleSize) + 1, (int)(size.Height * scaleSize) + 1);
var bg = Graphics.FromImage(bitmap);
bg.SmoothingMode = symbolizer.Smoothing ? SmoothingMode.AntiAlias : SmoothingMode.None;
var trans = bg.Transform;
// keenedge:
// added ' * scaleSize ' to fix a problme when ploted using ScaleMode=Geographic. however, it still
// appeared to be shifted up and left by 1 pixel so I also added the one pixel shift to the NW.
trans.Translate(((float)(size.Width * scaleSize) / 2 - 1), (float)(size.Height * scaleSize) / 2 - 1);
bg.Transform = trans;
symbolizer.Draw(bg, 1);
return bitmap;
}