private static void AdjustFrameToImage(RectangleD frame, Image image)
{
if (frame.Left < 0)
{
frame.Width += frame.Left;
frame.Left = 0;
}
if (frame.Top < 0)
{
frame.Height += frame.Top;
frame.Top = 0;
}
if (frame.Right > image.Width)
{
frame.Width -= frame.Right - image.Width;
}
if (frame.Bottom > image.Height)
{
frame.Height -= frame.Bottom - image.Height;
}
}
// todo: skip showRouteLine parameter, use RouteDrawingMode instead
public Bitmap CreateMapAndRouteImage(bool showRouteLine, double zoomValue, Session sessionToDraw, List <int> legsToDraw, double frameWidth, WaypointAttribute colorCodingAttribute, WaypointAttribute?secondaryColorCodingAttribute, RouteDrawingMode mode, SessionSettings sessionSettings)
{
RectangleD frame = GetFrame(zoomValue, sessionToDraw, legsToDraw, frameWidth, colorCodingAttribute, mode);
var sc = new SessionCollection();
sc.Add(sessionToDraw);
var wholeImage = CreateMapAndRouteImage(true, zoomValue, sc, colorCodingAttribute, secondaryColorCodingAttribute, mode, sessionSettings);
AdjustFrameToImage(frame, wholeImage);
var croppedImage = new Bitmap(
Convert.ToInt32(Math.Ceiling(frame.Right) - Math.Floor(frame.Left)),
Convert.ToInt32(Math.Ceiling(frame.Bottom) - Math.Floor(frame.Top)));
var croppedImageGraphics = Graphics.FromImage(croppedImage);
croppedImageGraphics.DrawImage(
wholeImage,
-Convert.ToInt32(Math.Floor(frame.Left)),
-Convert.ToInt32(Math.Floor(frame.Top)));
croppedImageGraphics.Dispose();
wholeImage.Dispose();
return(croppedImage);
}