//-------------------------------------------------------------------------
/// <summary>
/// Iterates through the pixels of the bitmap image. For each pixel, the
/// specified <code>delegate</code> is called. Pixels are enumerated from
/// the top left corner of the image, line by line. The <see cref="PixelData"/>
/// is updated at each step of the enumeration; that is, a new
/// <see cref="PixelData"/> instance is not created at each step. Modifying
/// the <see cref="PixelData"/> will modify the bitmap image when the
/// <see cref="Dispose"/> or <see cref="Flush"/> is invoked on the bitmap
/// handler.
/// </summary>
/// <param name="enumerator">The <code>delegate</code> that will handle
/// pixel enumeration.</param>
public void Enumerate(EnumerationHandler enumerator)
{
if (!Locked)
{
throw new InvalidOperationException("The bitmap is no longer locked; pixel information is no longer maintained.");
}
PixelData pixel = new PixelData();
for (int ycoordinate = 0; ycoordinate < Bitmap.Height; ++ycoordinate)
{
int offset = ycoordinate * this.bitmapData.Stride;
for (int xcoordinate = 0; xcoordinate < Bitmap.Width; ++xcoordinate)
{
int bIndex = offset + xcoordinate * BYTES_PER_PIXEL;
int gIndex = bIndex + 1;
int rIndex = gIndex + 1;
pixel.X = xcoordinate;
pixel.Y = ycoordinate;
pixel.R = this.pixelData[rIndex];
pixel.G = this.pixelData[gIndex];
pixel.B = this.pixelData[bIndex];
enumerator(pixel);
this.pixelData[rIndex] = pixel.R;
this.pixelData[gIndex] = pixel.G;
this.pixelData[bIndex] = pixel.B;
}
}
}
//-------------------------------------------------------------------------
/// <summary>
/// Iterates through the pixels of the bitmap image. For each pixel, the
/// specified <code>delegate</code> is called. Pixels are enumerated from
/// the top left corner of the image, line by line. The <see cref="PixelData"/>
/// is updated at each step of the enumeration; that is, a new
/// <see cref="PixelData"/> instance is not created at each step. Modifying
/// the <see cref="PixelData"/> will modify the bitmap image when the
/// <see cref="Dispose"/> or <see cref="Flush"/> is invoked on the bitmap
/// handler.
/// </summary>
/// <param name="enumerator">The <code>delegate</code> that will handle
/// pixel enumeration.</param>
public void Enumerate(EnumerationHandler enumerator)
{
if (!Locked)
{
throw new InvalidOperationException("The bitmap is no longer locked; pixel information is no longer maintained.");
}
PixelData pixel = new PixelData();
for (int ycoordinate = 0; ycoordinate < Bitmap.Height; ++ycoordinate)
{
int offset = ycoordinate * this.bitmapData.Stride;
for (int xcoordinate = 0; xcoordinate < Bitmap.Width; ++xcoordinate)
{
int bIndex = offset + xcoordinate * BYTES_PER_PIXEL;
int gIndex = bIndex + 1;
int rIndex = gIndex + 1;
pixel.X = xcoordinate;
pixel.Y = ycoordinate;
pixel.R = this.pixelData[rIndex];
pixel.G = this.pixelData[gIndex];
pixel.B = this.pixelData[bIndex];
enumerator(pixel);
this.pixelData[rIndex] = pixel.R;
this.pixelData[gIndex] = pixel.G;
this.pixelData[bIndex] = pixel.B;
}
}
}
