@Override
public Point3D at(final double t) {
Double x = origin.getX() + t * direction.getX();
Double y = origin.getY() + t * direction.getY();
Double z = origin.getZ() + t * direction.getZ();
return new Point3DImpl(x, y, z);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((direction == null) ? 0 : direction.hashCode());
result = prime * result + ((origin == null) ? 0 : origin.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
RayImpl other = (RayImpl) obj;
if (direction == null) {
if (other.direction != null) return false;
} else if (!direction.equals(other.direction)) return false;
if (origin == null) {
if (other.origin != null) return false;
} else if (!origin.equals(other.origin)) return false;
return true;
}
@Override
public double tOf(final Point3D a) {
Double d = a.sub(origin).dot(a.asNormal());
Double e = direction.dot(a.asNormal());
return d / e;
}