public void Plot(int x, int y, Color3 color, bool gammaCorrection)
{
if (float.IsNaN(color.R)) return;
var oldColor = _acc[x, y];
var newColor = (oldColor*NumSamples + color)/(NumSamples + 1);
_acc[x, y] = newColor;
_screen.Plot(x, y, newColor.ToArgb(gammaCorrection));
}
public Accumulator(Surface screen)
{
_screen = screen;
_acc = new Color3[screen.Width, screen.Height];
for(int y = 0; y < screen.Height; y++)
for (int x = 0; x < screen.Width; x++)
{
_acc[x,y] = new Color3(0,0,0);
}
}
public SingleColorSkybox(Color3 color)
{
_color = color;
}
public PointLight(Vector3 position, Color3 color, float intensity)
{
Position = position;
Color = color;
Intensity = intensity;
}
public Color3 TraceRay(int x, int y, RNG rng)
{
float v = (float)y / Screen.Height;
float u = (float)x / Screen.Width;
Color3 color = new Color3(0,0,0);
var strat = new Stratifier(rng, _sampleSizeX, _sampleSizeY);
for (int i = 0; i < SampleSize; i++)
{
var pos = strat.GetRandomPointInStratum(i);
var dx = pos.X / Screen.Width;
var dy = pos.Y / Screen.Height;
var r = _camera.CreatePrimaryRay(u + dx, v + dy);
color += _scene.Sample(r, rng, false);
}
color /= SampleSize;
return color;
}