mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-14 09:45:36 +00:00
33 lines
630 B
C
33 lines
630 B
C
|
#ifndef GRID_LEXICOGRAPHIC_H
|
||
|
|
#define GRID_LEXICOGRAPHIC_H
|
||
|
|
|
||
|
|
|
||
|
|
namespace Grid{
|
||
|
|
|
||
|
|
class Lexicographic {
|
||
|
|
public:
|
||
|
|
|
||
|
|
static inline void CoorFromIndex (std::vector<int>& coor,int index,std::vector<int> &dims){
|
||
|
|
int nd= dims.size();
|
||
|
|
coor.resize(nd);
|
||
|
|
for(int d=0;d<nd;d++){
|
||
|
|
coor[d] = index % dims[d];
|
||
|
|
index = index / dims[d];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void IndexFromCoor (std::vector<int>& coor,int &index,std::vector<int> &dims){
|
||
|
|
int nd=dims.size();
|
||
|
|
int stride=1;
|
||
|
|
index=0;
|
||
|
|
for(int d=0;d<nd;d++){
|
||
|
|
index = index+stride*coor[d];
|
||
|
|
stride=stride*dims[d];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
#endif
|