public void FloydSteinberg1()
{
var dt = new FloydSteinbergDither();
const int xsize = 100;
const int ysize = 100;
var b1 = new Bitmap(xsize, ysize);
b1.SetPixel(50, 50, Color.FromArgb(255, 255, 255, 255));
var b2 = dt.Process(b1);
for (int x = 0; x < xsize; x++)
{
for (int y = 0; y < ysize; y++)
{
Color col = b2.GetPixel(x, y);
if (col.R != 0)
{
Assert.AreEqual(255, col.R);
Assert.AreEqual(255, col.R);
Assert.AreEqual(255, col.R);
Assert.AreEqual(50, x);
Assert.AreEqual(50, y);
}
else
{
Assert.AreEqual(0, col.R);
Assert.AreEqual(0, col.G);
Assert.AreEqual(0, col.B);
}
}
}
}
public void FloydSteinberg2()
{
var dt = new FloydSteinbergDither();
const int xsize = 100;
const int ysize = 100;
var b1 = new Bitmap(xsize, ysize, PixelFormat.Format32bppArgb);
b1.SetPixel(50, 50, Color.FromArgb(255, 127, 127, 127));
b1.SetPixel(50, 51, Color.FromArgb(255, 127, 127, 127));
b1.SetPixel(50, 52, Color.FromArgb(255, 127, 127, 127));
b1.SetPixel(50, 53, Color.FromArgb(255, 127, 127, 127));
var b2 = dt.Process(b1);
for (int x = 0; x < xsize; x++)
{
for (int y = 0; y < ysize; y++)
{
Color col = b2.GetPixel(x, y);
if (col.R != 0)
{
Assert.AreEqual(255, col.R);
Assert.AreEqual(255, col.R);
Assert.AreEqual(255, col.R);
Assert.AreEqual(50, x);
Assert.IsTrue(y==53 || y==51);
}
else
{
Assert.AreEqual(0, col.R);
Assert.AreEqual(0, col.G);
Assert.AreEqual(0, col.B);
}
}
}
}