package raytracer.common.object;
import raytracer.common.type.Ray;
import raytracer.common.type.Vector;
import raytracer.common.util.Solver;
public class Sphere extends RtObject{
private double rayon;
@Override
public double[] primitive(Ray ray) {
double coef[] = new double[3];
Vector tmp = ray.getOrigin().add(this.center.product(-1.));
coef[0] = ray.getDirection().scalarProduct(ray.getDirection());
coef[1] = 2. * tmp.scalarProduct(ray.getDirection());
coef[3] = tmp.scalarProduct(tmp) - this.rayon * this.rayon;
return Solver.deg2(coef);
}
@Override
public Vector normal(Vector inter) {
return (inter.transformation(this.center, null).normal());
}
}