private Bitmap GetColorPlaneBitmap(Rectangle rect, ColorComponent comp) { Bitmap map = new Bitmap(rect.Width, rect.Height, PixelFormat.Format24bppRgb); BitmapData mapData = map.LockBits( new Rectangle(0, 0, map.Width, map.Height), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb); unsafe { byte *pt0 = (byte *)mapData.Scan0; Parallel.For(rect.Top, rect.Bottom, y => { int bitmapY = y - rect.Top; for (int x = rect.Left; x < rect.Right; x++) { int bitmapX = x - rect.Left; Color color; switch (comp) { case ColorComponent.Hue: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( _hsb.H, x / 255.0, 1 - y / 255.0)); break; case ColorComponent.Saturation: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( x / 255.0, _hsb.S, 1 - y / 255.0)); break; case ColorComponent.Brightness: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( x / 255.0, 1 - y / 255.0, _hsb.B)); break; case ColorComponent.Red: color = Color.FromArgb( _rgb.R, x, 255 - y); break; case ColorComponent.Green: color = Color.FromArgb( x, _rgb.G, 255 - y); break; case ColorComponent.Blue: color = Color.FromArgb( x, 255 - y, _rgb.B); break; default: throw new ArgumentException(); } if (_webSafeColorsOnly) { color = AdobeColors.GetNearestWebSafeColor(color); } byte *pt = pt0 + mapData.Stride * bitmapY + 3 * bitmapX; pt[2] = color.R; pt[1] = color.G; pt[0] = color.B; } }); } map.UnlockBits(mapData); return(map); }
private Bitmap GetColorStripBitmap(Rectangle rect, ColorComponent comp) { Bitmap map = new Bitmap(rect.Width, rect.Height, PixelFormat.Format24bppRgb); BitmapData mapData = map.LockBits( new Rectangle(0, 0, map.Width, map.Height), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb); int height = this.Height - 8; unsafe { byte *pt0 = (byte *)mapData.Scan0; Parallel.For(rect.Top, rect.Bottom, y => { int bitmapY = y - rect.Top; Color color; switch (comp) { case ColorComponent.Hue: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( 1.0 - (double)y / height, 1, 1)); break; case ColorComponent.Saturation: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( _hsb.H, 1.0 - (double)y / height, _hsb.B)); break; case ColorComponent.Brightness: color = AdobeColors.HSB_to_RGB(new AdobeColors.HSB( _hsb.H, _hsb.S, 1.0 - (double)y / height)); break; case ColorComponent.Red: int red = 255 - (int)Math.Round(255 * (double)y / height); color = Color.FromArgb( red, _rgb.G, _rgb.B); break; case ColorComponent.Green: int green = 255 - (int)Math.Round(255 * (double)y / height); color = Color.FromArgb( _rgb.R, green, _rgb.B); break; case ColorComponent.Blue: int blue = 255 - (int)Math.Round(255 * (double)y / height); color = Color.FromArgb( _rgb.R, _rgb.G, blue); break; default: throw new ArgumentException(); } if (_webSafeColorsOnly) { color = AdobeColors.GetNearestWebSafeColor(color); } for (int x = rect.Left; x < rect.Right; x++) { int bitmapX = x - rect.Left; byte *pt = pt0 + mapData.Stride * bitmapY + 3 * bitmapX; pt[2] = color.R; pt[1] = color.G; pt[0] = color.B; } }); } map.UnlockBits(mapData); return(map); }