public Ray Reflect(Vector3 normal, Vector3 point, SpectralColor colorFilter)
{
return(new Ray(
point,
Vector3.Reflect(Direction, normal),
ColorFilter.ApplyFilter(colorFilter)
));
}
public MaterialObject(
Vector3 origin,
Quaternion rotation,
List <Triangle> triangles,
SpectralColor color
) : base(origin, rotation, triangles)
{
Color = color;
}
public LightSource(
Vector3 origin,
Quaternion rotation,
List <Triangle> triangles,
float totalFlux,
SpectralColor spectralColor
) : base(origin, rotation, triangles)
{
TotalFlux = totalFlux;
Spectral = spectralColor.Normalize();
}
public void AccumulatePixel(uint x, uint y, SpectralColor luminance)
{
lock (this)
{
var pixel = Pixels[x, y];
var hits = HitsCount[x, y] + 1;
var newValues = pixel.Values.Zip(luminance.Values, (o, n) => o + (n - o) / (float)hits).ToArray();
Pixels[x, y] = new SpectralColor(newValues);
HitsCount[x, y] = hits;
}
}
public Ray CastRay(Vector2 pixel)
{
return(new Ray(
Origin,
Vector3.Normalize(
Vector3.Transform(
new Vector3(pixel.X * ViewAngle.X, pixel.Y * ViewAngle.Y, ViewAngle.Z),
Direction
)
),
SpectralColor.One()
));
}
public Image(uint w, uint h)
{
var pixels = new SpectralColor[w, h];
for (int i = 0; i < w; i++)
{
for (int j = 0; j < h; j++)
{
pixels[i, j] = SpectralColor.Zero();
}
}
Pixels = pixels;
HitsCount = new uint[w, h];
}
static void Main(string[] args)
{
var camera = new Camera(new Vector3(0f, 0f, -1f), Quaternion.Identity, new Vector3(1f, 1f, 1f));
var lights = new LightSource(
new Vector3(1f, 1f, -1f),
Quaternion.Identity,
new List <Triangle>()
{
new Triangle(new Vector3(-0.5f, 0.5f, 0f), new Vector3(0.5f, 0.5f, 0f),
new Vector3(-0.5f, -0.5f, 0f)),
new Triangle(new Vector3(0.5f, 0.5f, 0f), new Vector3(0.5f, -0.5f, 0f),
new Vector3(-0.5f, -0.5f, 0f))
},
100f,
new SpectralColor(new float[40].Select((f, i) => (float)i * 10).ToArray()).Normalize());
var objects = new MaterialObject(
new Vector3(0f, 0f, 0f),
Quaternion.CreateFromYawPitchRoll(0.5f, 0.5f, 0f),
new List <Triangle>()
{
new Triangle(new Vector3(0, 0, 0), new Vector3(0, 1, 0), new Vector3(1, 0, 0)),
new Triangle(new Vector3(1, 1, 0), new Vector3(0, 1, 0), new Vector3(1, 0, 0)),
// new Triangle(new Vector3(0, 0, 0), new Vector3(0, 0, 1), new Vector3(1, 0, 0)),
// new Triangle(new Vector3(1, 1, 0), new Vector3(0, 0, 1), new Vector3(1, 0, 0))
},
SpectralColor.One()
);
var scene = new Scene(new List <MaterialObject>()
{
objects
}, new List <LightSource>()
{
lights
});
var renderer = new Renderer(scene, camera);
var image = renderer.Render(1366, 768, 4);
var imgStr = HDRPrinter.StringifyImage(image);
File.WriteAllText("C:\\img.txt", imgStr);
}
public SpectralColor ApplyFilter(SpectralColor colorFilter)
{
return(new(Values.Zip(colorFilter.Values, (c, f) => c * f).ToArray()));
}
public SpectralColor AddLuminance(SpectralColor lumi)
{
return(new(Values.Zip(lumi.Values, (l, r) => l + r).ToArray()));
}
public Ray(Vector3 origin, Vector3 direction, SpectralColor color)
{
Origin = origin;
Direction = direction;
ColorFilter = color;
}