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); }