/** Interactive ray tracing animation scene
 * Master's Thesis, Univ of Colo, 2001
 * @author: Phil Gage
 */
public class InteractWorld extends World {

    static int frames = 30;
    static boolean doAnimate = false;

    // Define scene layout
    InteractWorld (Grid grid) {
        super(grid);

        // Define a light source for the sun
        Light light = new Light(
            new Vector3(-100.0, -100.0, -50.0),
            new Color (0.8,0.8,0.8));
        Light.ambient = new Color (0.2,0.2,0.2);
        add(light);

        add(new Light(
            new Vector3(100.0, -100.0, 50.0),
            new Color (0.8,0.8,0.8)));

        // Checkerboard ground plane
        double groundY = 100.0; //ground Y coord
        double groundsize = 800.0; //ground XZ range

/*
        // Round ground disk looks like flat horizon with Cyl camera
        Ring round =
            new Ring (new Point(0.0, 100.0, 0.0), //center
                      new Vector3(0.0, -1.0, 0.0), //normal
                      10.0, 1000.0, // innerRadius, outerRadius,
                      new Color (1.0,1.0,0.0));
        round.setMaterial(
            new CheckerMaterial(
                new Color (1.0,1.0,1.0),
                new Color (1.0,0.0,0.0),
                100)); // gridSize
        add(round);

*/

        // Checkerboard ground plane (shows Cyl distortion)
        BoundedPlane ground = new BoundedPlane (
                new Point(0.0, groundY, 0.0),  //point on plane
                new Vector3(0.0, -1.0, 0.0), //normal
                new Extent (new Point(-groundsize, groundY-1, -groundsize), //min
                            new Point(groundsize, groundY+1, groundsize)),  //max
                new Color (1.0,1.0,1.0));
        ground.setMaterial(
            new CheckerMaterial(
                new Color (1.0,1.0,1.0),
                new Color (1.0,0.0,0.0),
                100)); // gridSize
        add(ground);

        // Define spheres
        Sphere s = new Sphere(new Point(0.0, 0.0, 500.0), 100.0, new Color (1.0,0.0,0.0));
        s.material.ks = 0.99; //mirror
        s.material.kd = 0.01;
        add(s);

        // Snowman
/*
        Color snow = new Color (1.5,1.5,1.5);
        add(new Sphere(new Point(0.0,   50.0, -500.0), 50.0, snow)); //body
        add(new Sphere(new Point(0.0,  -40.0, -500.0), 40.0, snow));
        add(new Sphere(new Point(0.0, -110.0, -500.0), 30.0, snow)); //head
        add(new Sphere(new Point(20.0,-150.0, -480.0), 10.0, new Color (0.0,0.0,0.0))); //eyes
        add(new Sphere(new Point(-20.0,-150.0, -480.0), 10.0, new Color (0.0,0.0,0.0))); //eyes
*/
        // Snowman from Movie2
        Color snow = new Color (1.5,1.5,1.5);
        add(new Sphere(new Point(  0.0,   50.0, -500.0), 50.0, snow)); //body
        add(new Sphere(new Point(  0.0,  -20.0, -500.0), 40.0, snow));
        add(new Sphere(new Point(  0.0,  -80.0, -500.0), 30.0, snow)); //head
/*
        add(new Sphere(new Point( 15.0,  -90.0, -520.0),  8.0, new Color (0.0,0.0,0.0))); //eyes
        add(new Sphere(new Point(-15.0,  -90.0, -520.0),  8.0, new Color (0.0,0.0,0.0))); //eyes
        add(new Sphere(new Point(  0.0,  -81.0, -528.0),  6.0, new Color (0.5,0.1,0.0))); //nose
        add(new Sphere(new Point(  0.0,  -70.0, -525.0),  5.0, new Color (0.0,0.0,0.0))); //mouth
        add(new Sphere(new Point( 10.0,  -72.0, -523.0),  5.0, new Color (0.0,0.0,0.0))); //mouth
        add(new Sphere(new Point(-10.0,  -72.0, -523.0),  5.0, new Color (0.0,0.0,0.0))); //mouth
*/
        add(new Sphere(new Point( 15.0,  -90.0, -480.0),  8.0, new Color (0.0,0.0,0.0))); //eyes
        add(new Sphere(new Point(-15.0,  -90.0, -480.0),  8.0, new Color (0.0,0.0,0.0))); //eyes
        add(new Sphere(new Point(  0.0,  -81.0, -472.0),  6.0, new Color (0.5,0.1,0.0))); //nose
        add(new Sphere(new Point(  0.0,  -70.0, -475.0),  5.0, new Color (0.0,0.0,0.0))); //mouth
        add(new Sphere(new Point( 10.0,  -72.0, -477.0),  5.0, new Color (0.0,0.0,0.0))); //mouth
        add(new Sphere(new Point(-10.0,  -72.0, -477.0),  5.0, new Color (0.0,0.0,0.0))); //mouth


        // Box
        Box box = new Box (
            new Extent (new Point(-600.0, -100.0, -100.0), //min
                        new Point(-400.0,  100.0,  100.0)),  //max
            new Color (1.0,0.0,1.0));
        add(box);

        // Define pile of RGB spheres
        add(new Sphere(new Point(550.0, 0.0, 200.0), 100.0, new Color (1.0,0.0,0.0)));
        add(new Sphere(new Point(500.0, 0.0, 0.0), 100.0, new Color (0.0,1.0,0.0)));
        add(new Sphere(new Point(550.0, 0.0, -200.0), 100.0, new Color (0.0,0.0,1.0)));

        // Define transparent sphere on pile of RGB spheres
        Sphere st = new Sphere(new Point(530.0, -200.0, 0.0), 100.0, new Color (1.0,1.0,1.0));
        st.material.kt = 0.8; //transparent
        st.material.kd = 0.2;
        add(st);

        // Lord of the Rings
        add(
            new Ring (new Point(500.0, -200.0, 0.0), //center
                      new Vector3(0.2, -1.0, 0.2), //normal
                      120.0, 150.0, // innerRadius, outerRadius,
                      new Color (1.0,1.0,0.0)));

        // Define animated sphere class to test temporal coherence
        // To animate, extend class and override animate()
        class BouncingSphere extends Sphere {
            BouncingSphere () {
                super(new Point(0.0, 80.0, 300.0), 20.0,
                      new Color (1.0,1.0,1.0));
//                material.ks = 0.99; //mirror
//                material.kd = 0.01;
//                material.specular = 10.0; //Phong
            }
            // Override for animation
            boolean animate (int frame) {
frame = frame%frames;
                if (doAnimate) {
//System.out.println("animate!");
//                    center.y += 100.0*(double)frame;
                    center.y = 4.0*(double)frame*(double)(frames-frame)/(double)(frames*frames);
//                    center.y = -300.0*center.y + 130.0;
//                    center.y = -1.0*center.y + 130.0;  //fig
                    center.y = -200.0*center.y + 80.0;
                    return true;
                }
                else
                    return false;
            }
        }
        Sphere a = new BouncingSphere ();
        add(a);
    }

}