public void Columns_Holds_Kernel_Width()
{
var width = 3;
var dither = new DitherKernel(SierraLite, width);
Assert.AreEqual(width, dither.Columns);
}
public void Centre_Holds_Kernel_Centre_Point()
{
var width = 3;
var dither = new DitherKernel(SierraLite, width);
var expected = 1;
Assert.AreEqual(expected, dither.Centre);
}
public void Rows_Holds_Kernel_Rows()
{
var width = 3;
var dither = new DitherKernel(SierraLite, width);
var expected = SierraLite.Length / width;
Assert.AreEqual(expected, dither.Rows);
}
public void Ctor_Accepts_Coeffecients()
{
var dither = new DitherKernel(SierraLiteCoeff, 3);
var actual = dither.Coefficients.ToArray();
for (int i = 0; i < SierraLiteCoeff.Length; ++i)
{
Assert.AreEqual(SierraLiteCoeff[i], actual[i]);
}
}
public void Ctor_Assigns_Factor_To_Sum()
{
var dither = new DitherKernel(SierraLite, 3);
var actual = dither.Coefficients.ToArray();
for (int i = 0; i < SierraLiteCoeff.Length; ++i)
{
Assert.AreEqual(SierraLiteCoeff[i], actual[i]);
}
}
public void Ctor_Calculates_Coefficients()
{
var factor = 6.0f;
var dither = new DitherKernel(SierraLite, 3, (int)factor);
var actual = dither.Coefficients.ToArray();
for (int i = 0; i < SierraLiteCoeff.Length; ++i)
{
Assert.AreEqual(SierraLite[i] / factor, actual[i]);
}
}
public void Index_Operator_Returns_Coefficient()
{
var width = 3;
var dither = new DitherKernel(SierraLite, width);
for (int y = 0, n = 0; y < dither.Rows; ++y)
{
for (int x = 0; x < dither.Columns; ++x, ++n)
{
var actual = dither[x, y];
var expected = SierraLiteCoeff[n];
Assert.AreEqual(expected, actual);
}
}
}
