public Lambertian(Vec3 albedo)
{
if (rng == null)
{
rng = new RandomSphere();
}
this.albedo = albedo;
}
public Metallic(Vec3 albedo, double fuzziness)
{
if (rng == null)
{
rng = new RandomSphere();
}
this.albedo = albedo;
this.fuzziness = fuzziness;
}
public Camera(Vec3 lookFrom, Vec3 lookAt, Vec3 viewUp, double fov, double aspect, double aperture = 0.0, double focalLength = -1.0)
{
double theta = Math.PI * fov / 180;
double half_height = Math.Tan(theta / 2);
double half_width = aspect * half_height;
lensRadius = aperture / 2;
if (focalLength < 0)
{
focalLength = Vec3.Distance(lookFrom, lookAt);
}
position = lookFrom;
w = Vec3.Normalize(lookFrom - lookAt);
u = Vec3.Normalize(Vec3.Cross(viewUp, w));
v = Vec3.Cross(w, u);
lowerLeftCorner = position - (half_width * u + half_height * v + w) * focalLength;
horizontal = 2 * half_width * focalLength * u;
vertical = 2 * half_height * focalLength * v;
rsg = new RandomSphere();
}
