public void GenerateTest()
{
const int height = 256;
const int width = 256;
var iterationsX = new int[] { 64, 128, 192 };
var iterationsY = new int[] { 64, 128, 192 };
foreach (int iterationX in iterationsX)
{
foreach (int iterationY in iterationsY)
{
var gradient = new RadialGradient(iterationX, iterationY, 1, 1, width, height, true);
using (var testBitmap = new Bitmap(width, height))
using (var originalBitmap = new Bitmap(String.Format(@".\OriginalImages\RadialGradient{0}_{1}.png", iterationX, iterationY)))
{
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int result = (byte)(255 * gradient.Generate(x, y));
var color = Color.FromArgb(255, result, result, result);
testBitmap.SetPixel(x, y, color);
}
}
int differentPixels = 0;
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
if (testBitmap.GetPixel(x, y) != originalBitmap.GetPixel(x, y))
{
differentPixels++;
}
}
}
// Allow for a 0.5% difference
Assert.IsTrue(differentPixels < Mathf.RoundToInt((width * height) * 0.005f));
}
}
}
}
public void GenerateWithDivisionsTest()
{
const int height = 256;
const int width = 256;
var iterationsX = new int[] { 64, 128, 192 };
var iterationsY = new int[] { 64, 128, 192 };
foreach (int iterationX in iterationsX)
{
foreach (int iterationY in iterationsY)
{
var gradient = new RadialGradient(iterationX, iterationY, 1, 1, width, height, true,
new List<RadialGradient.RadialGradientDivision>()
{
new RadialGradient.RadialGradientDivision { Value = 0f, Point = Vector2.zero },
new RadialGradient.RadialGradientDivision { Value = 0f, Point = new Vector2((float)width / 2 - ((float)width / 2 * 0.75f), (float)height / 2 - ((float)height / 2 * 0.75f)) },
new RadialGradient.RadialGradientDivision { Value = 0.9f, Point = new Vector2((float)width / 2 - ((float)width / 2 * 0.25f), (float)height / 2 - ((float)height / 2 * 0.25f)) },
new RadialGradient.RadialGradientDivision { Value = 1f, Point = new Vector2((float)width / 2, (float)height / 2) }
});
using (var testBitmap = new Bitmap(width, height))
using (var originalBitmap = new Bitmap(String.Format(@".\OriginalImages\RadialGradientWithDivisions{0}_{1}.png", iterationX, iterationY)))
{
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int result = (byte)(255 * gradient.Generate(x, y));
var color = Color.FromArgb(255, result, result, result);
testBitmap.SetPixel(x, y, color);
}
}
int differentPixels = 0;
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
if (testBitmap.GetPixel(x, y) != originalBitmap.GetPixel(x, y))
{
differentPixels++;
}
}
}
// Allow for a 0.5% difference
Assert.IsTrue(differentPixels < Mathf.RoundToInt((width * height) * 0.005f));
}
}
}
}
