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);
}
