public class Object3d {
    public PointComp[] points;
    public int[][] faceList;
    public Face[] faces;
    public Point3D boundingSphereC;
    public double boundingSphereR;

    public Object3d(PointComp[] _points, int[][] faceList, boolean initialise){
        points = _points;
        if(initialise){initialise();}
    }
    public void initialise(){
        // init faces
        faces = new Face[faceList.length];
        for (int face = 0; face < faceList.length; face+= 1) {
            faces[face] = new Face();
            faces[face].points = new PointComp[faceList[face].length];
            for (int point = 0; point < faceList[face].length; point += 1){
                faces[face].points[point] = points[faceList[face][point]];
            }
        }
        // init bounding sphere
        double distance = 0;
        double newDis;
        Point3D pointA = points[0].point;
        Point3D pointB = points[0].point;
        // todo - maybe use some vector classes?
        for (int i = 1; i < points.length; i+=1) {
            newDis = Math.pow(points[0].point.x - points[i].point.x, 2) +
                    Math.pow(points[0].point.y - points[i].point.y, 2) +
                    Math.pow(points[0].point.z - points[i].point.z, 2);
            if (newDis >= distance){
                pointA = points[i].point;
                distance = newDis;}}
        for (PointComp point : points) {
            newDis = Math.pow(pointA.x - point.point.x, 2) +
                    Math.pow(pointA.y - point.point.y, 2) +
                    Math.pow(pointA.z - point.point.z, 2);
            if (newDis >= distance){
                pointB = point.point;
                distance = newDis;}}
        boundingSphereC = new Point3D(
                (pointA.x+ pointB.x) / 2,
                (pointA.y + pointB.y)/2,
                (pointA.y + pointB.y)/2);
        boundingSphereR = Math.sqrt(distance)/2;
    }
}