public static void DrawSpectrum(Bitmap bitmap, Hues hues, int index)
{
if (bitmap == null) throw new ArgumentNullException("bitmap");
if (hues == null) throw new ArgumentNullException("hues");
if (index < hues.MinIndex || index > hues.MaxIndex)
throw new ArgumentOutOfRangeException("index");
HueEntry hue = hues.Get(index);
BitmapData data = bitmap.LockBits(new Rectangle(new Point(), bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format16bppArgb1555);
float colorWidth = (float)bitmap.Width / 32.0f;
short[] line = new short[bitmap.Width];
for (int x = 0; x < bitmap.Width; x++)
{
int id = (int)(x / colorWidth);
if (id < 32)
{
line[x] = (short)(hue.Colors[id] | 0x8000);
}
}
for (int y = 0; y < bitmap.Height; y++)
{
int offset = (int)data.Scan0 + y * data.Stride;
Marshal.Copy(line, 0, (IntPtr)offset, line.Length);
}
bitmap.UnlockBits(data);
}
public static void DrawField(Bitmap bitmap, Hues hues, int startHueIndex, int endHueIndex, Size hueSize, int brightness)
{
// Check arguments
if (bitmap == null) throw new ArgumentNullException("bitmap");
if (hues == null) throw new ArgumentNullException("hues");
if (bitmap.PixelFormat != PixelFormat.Format16bppArgb1555)
throw new ArgumentException("Invalid bitmap pixel format.", "bitmap");
if (startHueIndex != 0)
startHueIndex = HuesRenderer.Range(startHueIndex, hues.MinIndex, hues.MaxIndex);
if (endHueIndex != 0)
endHueIndex = HuesRenderer.Range(endHueIndex, hues.MinIndex, hues.MaxIndex);
hueSize.Width = HuesRenderer.Range(hueSize.Width, 1, 64);
hueSize.Height = HuesRenderer.Range(hueSize.Height, 1, 64);
brightness = HuesRenderer.Range(brightness, 0, 31);
int columns = bitmap.Size.Width / hueSize.Width;
int rows = bitmap.Size.Height / hueSize.Height;
BitmapData data = bitmap.LockBits(new Rectangle(new Point(), bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format16bppArgb1555);
for (int y = 0; y < rows; y++)
{
short[] line = new short[bitmap.Size.Width];
for (int x = 0; x < columns; x++)
{
int id = startHueIndex + x * rows + y + 1;
if (id <= hues.MaxIndex && (endHueIndex == 0 || id <= endHueIndex))
{
ushort color = hues.Get(id).Colors[brightness];
for (int i = 0; i < hueSize.Width; i++)
{
line[x * hueSize.Width + i] = (short)(color | 0x8000);
}
}
}
for (int i = 0; i < hueSize.Height; i++)
{
int offset = (int)data.Scan0 + (y * hueSize.Height + i) * data.Stride;
Marshal.Copy(line, 0, (IntPtr)offset, line.Length);
}
}
bitmap.UnlockBits(data);
}
