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#ifndef LIFE_SRC_UTIL_TORUS_ARRAY_
#define LIFE_SRC_UTIL_TORUS_ARRAY_
#include <array>
#include <cstdint>
namespace life {
namespace util {
template<
typename TYPE,
std::size_t WIDTH,
std::size_t HEIGHT
>
class TorusArray {
static std::size_t toMatrixColumn(const std::ptrdiff_t x) {
if ( x >= 0 ) {
return x % WIDTH;
} else {
return WIDTH - ( std::abs(x) % WIDTH );
}
}
static std::size_t toMatrixRow(const std::ptrdiff_t y) {
if ( y >= 0 ) {
return y % HEIGHT;
} else {
return HEIGHT - ( std::abs(y) % HEIGHT );
}
}
public:
static const std::size_t width = WIDTH;
static const std::size_t height = HEIGHT;
TYPE get(const std::ptrdiff_t x, const std::ptrdiff_t y) const {
return this->matrix_[toMatrixRow(y)][toMatrixColumn(x)];
}
void set(const std::ptrdiff_t x, const std::ptrdiff_t y, TYPE&& value) {
this->matrix_[toMatrixRow(y)][toMatrixColumn(x)] = value;
}
private:
std::array<std::array<TYPE, WIDTH>, HEIGHT> matrix_;
};
}
}
#endif // LIFE_SRC_UTIL_TORUS_ARRAY_
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