public void GetRFromRRGGBBTest()
{
// Init
string hexColor = "#128Fa5";
// Act
byte result = HexColorUtil.GetR(hexColor);
// Assert
Assert.AreEqual(18, result);
}
public void GetRFromRGBTest()
{
// Init
string hexColor = "#465";
// Act
byte result = HexColorUtil.GetR(hexColor);
// Assert
Assert.AreEqual(64, result);
}
/// <inheritdoc />
public System.IO.Stream ColorizePixel(System.IO.Stream imageStream, GetPixelColor getPixelColor)
{
#region validation
if (imageStream == null)
{
throw new ArgumentNullException(nameof(imageStream));
}
if (getPixelColor == null)
{
throw new ArgumentNullException(nameof(getPixelColor));
}
#endregion
// create map for colorcode-representation
// stores already translated HEX-colors
Dictionary <string, Rgba32> colorMap = new Dictionary <string, Rgba32>();
using (Image <Rgba32> image = LoadImageFromStream <Rgba32>(imageStream, out IImageFormat imageFormat))
{
// iterate over all pixels of image
for (int x = 0; x < image.Width; x++)
{
for (int y = 0; y < image.Height; y++)
{
// get color for pixel
// if null, background color should be used
string pixelColor = getPixelColor(x, y);
if (!string.IsNullOrEmpty(pixelColor))
{
if (!colorMap.ContainsKey(pixelColor))
{
colorMap.Add(pixelColor, new Rgba32(HexColorUtil.GetR(pixelColor), HexColorUtil.GetG(pixelColor), HexColorUtil.GetB(pixelColor), HexColorUtil.GetA(pixelColor)));
}
image[x, y] = colorMap[pixelColor];
}
}
}
return(SaveAsStream(image, imageFormat));
}
}