/// <summary>
/// Method that calculates the color of all pixels of the <see cref="HdrImage"/>
/// datamember according to the rendering equation,
/// specified by a <see cref="Render"/> object. It also implements
/// antialiasing to avoid Moirè fringes effects.
/// </summary>
/// <param name="rend"> The type of renderer that transforms a <see cref="Ray"/> into a <see cref="Color"/>.</param>
public void fireAllRays(Render rend)
{
int totalTicks = image.height;
var options = new ProgressBarOptions
{
ProgressCharacter = '#',
ForegroundColor = ConsoleColor.Yellow,
ForegroundColorDone = ConsoleColor.Green,
BackgroundColor = ConsoleColor.DarkBlue,
ProgressBarOnBottom = true,
};
using (var pbar = new ProgressBar(totalTicks, "", options))
{
try
{
int rowCompleted = 0;
Parallel.For(0, image.height, i =>
{
for (int j = 0; j < image.width; j++)
{
Color appo = Constant.Black;
if (this.samplesPerSide > 0)
{
for (int iPixRow = 0; iPixRow < samplesPerSide; iPixRow++)
{
for (int iPixCol = 0; iPixCol < samplesPerSide; iPixCol++)
{
float uPix = (iPixCol + pcg.randomFloat()) / (float)samplesPerSide;
float vPix = (iPixRow + pcg.randomFloat()) / (float)samplesPerSide;
Ray rr = this.fireRay(col: j, row: i, uPixel: uPix, vPixel: vPix);
appo += rend.computeRadiance(rr);
}
}
this.image.setPixel(j, i, appo * (1.0f / (float)Math.Pow(samplesPerSide, 2)));
}
else
{
Ray charles = this.fireRay(j, i);
Color me_in = rend.computeRadiance(charles);
this.image.setPixel(j, i, me_in);
}
}
rowCompleted++;
pbar.Tick($"Completed {rowCompleted}/{totalTicks} rows of the image");
});
}
catch (AggregateException)
{
//lol
}
}
}
public override Ray scatterRay(PCG r, Vec incomingDir, Point interactionPoint, Normal normal, int depth)
{
List<Vec> a = normal.createONBfromZ();
Vec e1 = a[0];
Vec e2 = a[1];
Vec e3 = a[2];
float cosThetaSq = r.randomFloat();
float cosTheta = MathF.Sqrt(cosThetaSq);
float sinTheta = MathF.Sqrt(1.0f - cosThetaSq);
float phi = 2 * MathF.PI * r.randomFloat();
Vec dir = e1 * sinTheta * MathF.Cos(phi) + e2 * sinTheta * MathF.Sin(phi) + e3 * cosTheta;
return new Ray(interactionPoint, dir, tm: 1e-5f, dep: depth);
}