public Present Evaluate(Present[] paramList)
{
D.Assert(paramList.Length == 3);
for (int i = 0; i < paramList.Length; i++)
{
Present present = paramList[i];
if (present is PresentFailureCode)
{
return(present);
}
}
if (!(paramList[0] is ImageRef))
{
return(paramList[0]);
}
ImageRef imageRef = (ImageRef)paramList[0];
TileAddress tileAddress = (TileAddress)paramList[1];
BoundsPresent boundsPresent = (BoundsPresent)paramList[2];
MapRectangle mapWindow = CoordinateSystemUtilities.TileAddressToMapRectangle(this.coordinateSystem, tileAddress);
Region clipRegion = boundsPresent.GetRenderRegion().GetClipRegion(mapWindow, tileAddress.ZoomLevel, this.coordinateSystem);
GDIBigLockedImage gDIBigLockedImage = new GDIBigLockedImage(imageRef.image.Size, "UserClipperVerb");
gDIBigLockedImage.SetClip(clipRegion);
gDIBigLockedImage.DrawImageOntoThis(imageRef.image, new RectangleF(0f, 0f, (float)gDIBigLockedImage.Size.Width, (float)gDIBigLockedImage.Size.Height), new RectangleF(0f, 0f, (float)imageRef.image.Size.Width, (float)imageRef.image.Size.Height));
ImageRef result = new ImageRef(new ImageRefCounted(gDIBigLockedImage));
boundsPresent.Dispose();
imageRef.Dispose();
return(result);
}
private LatLonZoom PixelToLatLong(Point64 p, int zoomLevel)
{
double num = this.MetersPerPixel(zoomLevel);
double num2 = (double)p.X * num - 20037508.342789244;
double num3 = 20037508.342789244 - (double)p.Y * num;
return(new LatLonZoom(CoordinateSystemUtilities.RadiansToDegrees(1.5707963267948966 - 2.0 * Math.Atan(Math.Exp(-num3 / 6378137.0))), CoordinateSystemUtilities.RadiansToDegrees(num2 / 6378137.0), zoomLevel));
}
internal static LatLon MercatorToLatLon(LatLon mercator)
{
double num = 40075016.685578488;
double num2 = mercator.lon * num - 20037508.342789244;
double num3 = 20037508.342789244 - mercator.lat * num;
return(new LatLon(CoordinateSystemUtilities.RadiansToDegrees(1.5707963267948966 - 2.0 * Math.Atan(Math.Exp(-num3 / 6378137.0))), CoordinateSystemUtilities.RadiansToDegrees(num2 / 6378137.0)));
}
private Point64 LatLongZoomToPixel(LatLonZoom p)
{
double num = Math.Sin(CoordinateSystemUtilities.DegreesToRadians(p.lat));
double num2 = 6378137.0 * CoordinateSystemUtilities.DegreesToRadians(p.lon);
double num3 = 3189068.5 * Math.Log((1.0 + num) / (1.0 - num));
double num4 = this.MetersPerPixel(p.zoom);
return(new Point64((long)Math.Round((20037508.342789244 + num2) / num4), (long)Math.Round((20037508.342789244 - num3) / num4)));
}
public static LatLon LatLonToMercator(LatLon latlon)
{
double num = Math.Sin(CoordinateSystemUtilities.DegreesToRadians(latlon.lat));
double num2 = 6378137.0 * CoordinateSystemUtilities.DegreesToRadians(latlon.lon);
double num3 = 3189068.5 * Math.Log((1.0 + num) / (1.0 - num));
double num4 = 40075016.685578488;
return(new LatLon((20037508.342789244 - num3) / num4, (20037508.342789244 + num2) / num4));
}
