1    package graphics.raytracers.tracer.primatives; 
2     
3    import graphics.raytracers.tracer.geometry.Ray3d; 
4    import graphics.raytracers.tracer.geometry.Vector3d; 
5     
6    public abstract class Primitive { 
7        public Surface surf = new Surface(); 
8     
9        public void setColor(double r, double g, double b) { 
10           surf.color = new Vector3d(r, g, b); 
11       } 
12    
13       public abstract Vector3d normal(Vector3d pnt); 
14    
15       public abstract Isect intersect(Ray3d ry); 
16    
17       public abstract String toString(); 
18   } 
19