1    package graphics.ddd; 
2     
3    // DATA STRUCTURES 
4     
5    public class Vector3d { 
6        float x; 
7        float y; 
8        float z; 
9     
10       public Vector3d() { 
11       } 
12    
13       public Vector3d(float xval, float yval, float zval) { 
14           x = xval; 
15           y = yval; 
16           z = zval; 
17       } 
18   } 
19