package renderSuite;

import java.lang.Math;
import renderSuite.Vec3;

public class Ray {
    // position, facing
    Vec3 p, f;

    public Ray(Vec3 position, Vec3 facing) {
        this.p = position;
        this.f = facing;
    }

    public void main() {}

    public void rotate(char axis, double angle) {
        if (axis == 'x') {
            this.f = new Vec3(this.f.x,
                              this.f.y*Math.cos(angle) - this.f.z*Math.sin(angle),
                              this.f.y*Math.sin(angle) + this.f.z*Math.cos(angle));
        } else if (axis == 'y') {
            this.f = new Vec3(this.f.x*Math.cos(angle) + this.f.z*Math.sin(angle),
                              this.f.y,
                              this.f.z*Math.cos(angle) - this.f.x*Math.sin(angle));
        }
    }

    public void move(Vec3 mv) {
        this.p.x += mv.x;
        this.p.y += mv.y;
        this.p.z += mv.z;
    }
    
    public void step(double l) {
        this.p.x += this.f.x * l;
        this.p.y += this.f.y * l;
        this.p.z += this.f.z * l;
    }
}