private void Initialize(Bitmap bitmap)
{
this.imageWidth = bitmap.Width;
this.imageHeight = bitmap.Height;
// Compute the maximum level of detail that this image supports.
// This is a function of size of the image.
this.MaximumLevelsOfDetail = TileHelper.CalculateMaximumLevel(this.imageHeight, this.imageWidth, this.inputBoundary);
// Get starting pixel values for x and y
Helper.LatLongToPixelXY(this.inputBoundary.Bottom, this.inputBoundary.Left, this.MaximumLevelsOfDetail, out startX, out startY);
// Get ending pixel values for x and y
Helper.LatLongToPixelXY(this.inputBoundary.Top, this.inputBoundary.Right, this.MaximumLevelsOfDetail, out endX, out endY);
// Get image data
this.imageData = TileHelper.BitmapToBytes(bitmap);
}
public static void ToBitmap(int level, int tileX, int tileY, int[] values, IImageTileSerializer serializer, IImageTileSerializer referenceImageSerializer)
{
byte[] referenceImage = null;
using (Bitmap image = new Bitmap(Constants.TileSize, Constants.TileSize, PixelFormat.Format32bppArgb))
{
// Set the data row by row
Rectangle dimension = new Rectangle(0, 0, Constants.TileSize, Constants.TileSize);
BitmapData imageData = image.LockBits(dimension, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
byte[] rgb = new byte[imageData.Stride];
int position = -1;
if (referenceImageSerializer != null)
{
referenceImage = TileHelper.BitmapToBytes(referenceImageSerializer.Deserialize(level, tileX, tileY));
}
for (int pixelY = 0; pixelY < Constants.TileSize; pixelY++)
{
Array.Clear(rgb, 0, rgb.Length);
int pos = 0;
Color referenceColor = Color.White;
for (int pixelX = 0; pixelX < Constants.TileSize; pixelX++)
{
Color color = Color.Transparent;
position++;
if (referenceImage != null)
{
if (referenceImage != null &&
referenceImage[(position * 4)] == referenceColor.B &&
referenceImage[(position * 4) + 1] == referenceColor.G &&
referenceImage[(position * 4) + 2] == referenceColor.R)
{
if (values != null)
{
color = Color.FromArgb(values[position]);
}
}
}
else
{
if (values != null)
{
color = Color.FromArgb(values[position]);
}
}
rgb[pos++] = color.B;
rgb[pos++] = color.G;
rgb[pos++] = color.R;
rgb[pos++] = color.A;
}
IntPtr p = new IntPtr(imageData.Scan0.ToInt64() + (pixelY * imageData.Stride));
System.Runtime.InteropServices.Marshal.Copy(rgb, 0, p, rgb.Length);
}
image.UnlockBits(imageData);
if (serializer != null)
{
serializer.Serialize(image, level, tileX, tileY);
}
imageData = null;
rgb = null;
}
}
