| addFrag | addFrag(VolFrag src) only within the intersection of the 2 frags |
| addValue | addValue(int x, int y, int z, float val) |
| getSize | getSize() |
| multValue | multValue(int x, int y, int z, float val) |
| readFile | readFile(filename) return 0 on success not 0 on failure |
| setSize | setSize(int size) sets object size |
| setSizeI | setSizeI(int nx, int i) |
| setSizeYZ | setSizeYZ(int nx, int y, int z) |
| setupIcos | setupIcos() |
| setValue | setValue(int x, int y, int z, float val) |
| validXYZ | int validXYZ(int x, int y, int z) |
| valueAt | float valueAt(int x, int y, int z) |
| VolFrag | VolFrag() construct an empty VolFrag instance |
| writeFile | writeFile(filename) return 0 on success not 0 on failure |
| zero | zero() zero all elements |