public PixelRectangleInfo(int width, int height, IPixelInformation pixelInfo, PixmapOrientation orient, int bytesPerRow)
{
Width = width;
Height = height;
Layout = pixelInfo.Layout;
ComponentType = pixelInfo.ComponentType;
Orientation = orient;
Alignment = 1;
BytesPerRow = bytesPerRow;
}
public static ColorRGBA GetColor(IPixelInformation pixelInfo, IntPtr data, int startIndex)
{
int bytesPerPixel = pixelInfo.BytesPerPixel;
// how many components are there?
int nComponents = PixelInformation.GetComponentsPerLayout(pixelInfo.Layout);
int componentSize = PixelInformation.GetBytesPerComponent(pixelInfo.ComponentType);
double maxValue = PixelInformation.GetMaxComponentValue(pixelInfo.ComponentType);
float[] floats = new float[nComponents];
switch (pixelInfo.ComponentType)
{
case PixelComponentType.Byte:
case PixelComponentType.UnsignedByte:
byte[] bufferb = new byte[nComponents];
Marshal.Copy(data, bufferb, 0, nComponents);
for (int i = 0; i < nComponents; i++)
floats[i] = (float)(bufferb[i] / maxValue);
break;
case PixelComponentType.Short:
short[] buffers = new short[nComponents];
Marshal.Copy(data, buffers, 0, nComponents);
for (int i = 0; i < nComponents; i++)
floats[i] = (float)(buffers[i] / maxValue);
break;
case PixelComponentType.Int:
int[] bufferi = new int[nComponents];
Marshal.Copy(data, bufferi, 0, nComponents);
for (int i = 0; i < nComponents; i++)
floats[i] = (float)(bufferi[i] / maxValue);
break;
case PixelComponentType.Float:
int[] bufferf = new int[nComponents];
Marshal.Copy(data, bufferf, 0, nComponents);
for (int i = 0; i < nComponents; i++)
floats[i] = (float)(bufferf[i] / maxValue);
break;
case PixelComponentType.Double:
int[] bufferd = new int[nComponents];
Marshal.Copy(data, bufferd, 0, nComponents);
for (int i = 0; i < nComponents; i++)
floats[i] = (float)(bufferd[i] / maxValue);
break;
}
ColorRGBA newColor = new ColorRGBA(floats);
return newColor;
}
public static ColorRGBA GetColor(IPixelInformation pixelInfo, byte[] data, int startIndex)
{
return GetColor(pixelInfo.Layout, pixelInfo.ComponentType, data, startIndex);
}
public static ColorRGBA GetColor(IPixelInformation pixelInfo, byte[] data)
{
return GetColor(pixelInfo, data, 0);
}
public static byte[] GetBytesForColor(IPixelInformation pInfo, ColorRGBA color)
{
return GetBytesForColor(pInfo.Layout, pInfo.ComponentType, color);
}
protected PixelAccessor(int width, int height, IPixelInformation pixelInfo, int bytesPerRow, PixmapOrientation orientation,
IntPtr pixelPointer)
{
PixRectInfo = new PixelRectangleInfo(width, height, pixelInfo, orientation, bytesPerRow);
fPixelPointer = pixelPointer;
}
