public Image <Rgba32> RenderAsGif(int width = 320, int height = 120, int margin = 7)
{
using (var image = new Image <Rgba32>(width, height))
{
int barwidth = width / 5;
for (int arrayIndex = 0; arrayIndex < _bitArray.Count; arrayIndex++)
{
for (byte cl = 1; cl >= 0; cl--)
{
// Weird flex move that sets the 5th bit first to 1 then to 0
var bits = this._bitArray[arrayIndex];
bits[0] = cl;
// Build Frame
using (var frame = new Image <Rgba32>(width, height))
{
for (int byteIndex = 0; byteIndex < 5; byteIndex++)
{
var color = _bitArray[arrayIndex][byteIndex] == 1 ? Color.White :Color.Black;
var bounds = new CoreRectangle(byteIndex * barwidth + margin, margin, barwidth - 2 * margin, height - 2 * margin);
frame.Mutate(x => x.Fill(color, bounds));
}
image.Frames.AddFrame(frame.Frames[0]);
}
}
}
return(image);
}
}
public Image <Rgba32> RenderAsGif(int width = 320, int height = 120)
{
using (var image = new Image <Rgba32>(width, height))
{
int margin = 7, barwidth = width / 5;
for (int i = 0; i < bitarray.Count; i++)
{
for (int cl = 1; cl >= 0; cl--)
{
int[] bits = this.bitarray[i];
bits[0] = cl;
using (var frame = new Image <Rgba32>(width, height))
{
for (int b = 0; b < 5; b++)
{
var color = bitarray[i][b] == 1 ? Color.White :Color.Black;
var bounds = new CoreRectangle(b * barwidth + margin, margin, barwidth - 2 * margin, height - 2 * margin);
frame.Mutate(x => x.Fill(color, bounds));
}
image.Frames.AddFrame(frame.Frames[0]);
}
}
}
return(image);
}
}
public static void ImageRegionIsColor(this Assert assert, SixLabors.ImageSharp.Rectangle region, Rgb24 expectedColor, Image <Rgb24> actualImage, double tolerance = 0.0)
{
//var width = region.Width;
var area = region.Width * region.Height;
var red = new int[area];
var green = new int[area];
var blue = new int[area];
var indices = new HashSet <int>();
for (var x = region.Left; x < region.Right; x++)
{
for (var y = region.Top; y < region.Bottom; y++)
{
var color = actualImage[x, y];
var i = x - region.Left;
var j = y - region.Top;
var index0 = (i * region.Height) + j;
if (indices.Contains(index0))
{
Debugger.Break();
}
indices.Add(index0);
red[index0] = color.R;
green[index0] = color.G;
blue[index0] = color.B;
}
}
var averageRed = red.Average();
var averageBlue = blue.Average();
var averageGreen = green.Average();
Assert.IsTrue(
Math.Abs(averageRed - expectedColor.R) <= tolerance &&
Math.Abs(averageGreen - expectedColor.G) <= tolerance &&
Math.Abs(averageBlue - expectedColor.B) <= tolerance,
$"Region {region} is not expected color {expectedColor} - actual averages: R={averageRed:F20}, G={averageGreen:F20}, B={averageBlue:F20}");
}
public static void ImageContainsExpected <T>(this Assert assert, Image <T> expectedImage, SixLabors.ImageSharp.Point expectedLocation, Image <T> actualImage, double tolerance = 0.0, string message = "")
where T : struct, IPixel <T>
{
var regionToCheck = new SixLabors.ImageSharp.Rectangle(expectedLocation, expectedImage.Size());
Assert.IsTrue(actualImage.Bounds().Contains(regionToCheck));
var(normalizedDifference, differences) = CompareImage(expectedImage, actualImage, regionToCheck);
if (normalizedDifference > tolerance)
{
var deltaStrings = differences.Take(10).Select(x => x.ToString()).FormatList();
var assertReason =
$@"Images are not equal - total delta {normalizedDifference} is not less than tolerance {tolerance}.
Difference are:
{deltaStrings}
(and {differences.Count} more..)
{message}";
Assert.Fail(assertReason);
}
}
/// <summary>
/// Pixelates an image with the given pixel size.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="size">The size of the pixels.</param>
/// <param name="rectangle">
/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
/// </param>
/// <returns>The <see cref="Image{TPixel}"/>.</returns>
public static IImageProcessingContext <TPixel> Pixelate <TPixel>(this IImageProcessingContext <TPixel> source, int size, Rectangle rectangle)
where TPixel : struct, IPixel <TPixel>
=> source.ApplyProcessor(new PixelateProcessor <TPixel>(size), rectangle);
