private Image ReadImage(MapImage mapImage, Point startPoint, Point endPoint, int overview)
{
imageStartPoint = ScreenToImage(mapImage, startPoint);
imageEndPoint = ScreenToImage(mapImage, endPoint);
if (imageEndPoint.X > mapImage.ImageWidth)
{
imageEndPoint.X = mapImage.ImageWidth;
}
if (imageEndPoint.Y > mapImage.ImageHeight)
{
imageEndPoint.Y = mapImage.ImageHeight;
}
System.Drawing.Bitmap bitmap = gdalReader.GetBitmap((int)imageStartPoint.X, (int)imageStartPoint.Y,
(int)imageEndPoint.X, (int)imageEndPoint.Y, overview);
Image image = new Image();
image.Source = ImageControl.BitmapToBitmapImage(bitmap, mapImage.ImageFormat);
return(image);
}
private void SetImage(MapImage mapImage)
{
System.Drawing.Bitmap bitmap = gdalReader.GetBitmap(0, 0, mapImage.ImageWidth, mapImage.ImageHeight, 5);
Image image = new Image();
image.Source = ImageControl.BitmapToBitmapImage(bitmap, mapImage.ImageFormat);
image.Width = mapImage.ViewWidth;
image.Height = mapImage.ViewHeight;
image.Stretch = Stretch.Fill;
if (mapImage.ImageBoundary != null)
{
Canvas.SetLeft(image, mapImage.ImageBoundary.Left);
Canvas.SetTop(image, mapImage.ImageBoundary.Top);
}
else
{
Canvas.SetLeft(image, 0);
Canvas.SetTop(image, 0);
}
CanvasView.Children.Add(image);
}