mirror of
https://github.com/minetest/minetest.git
synced 2024-12-04 13:33:44 +01:00
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
|
/*
|
||
|
|
Minetest
|
||
|
|
Copyright (C) 2015 Nerzhul, Loic Blot <loic.blot@unix-experience.fr>
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License along
|
||
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
||
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef FACE_POSITION_CACHE_HEADER
|
||
|
|
#define FACE_POSITION_CACHE_HEADER
|
||
|
|
|
||
|
|
#include "irr_v3d.h"
|
||
|
|
#include "threading/mutex.h"
|
||
|
|
#include "util/cpp11_container.h"
|
||
|
|
|
||
|
|
#include <map>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This class permits caching getFacePosition call results.
|
||
|
|
* This reduces CPU usage and vector calls.
|
||
|
|
*/
|
||
|
|
class FacePositionCache {
|
||
|
|
public:
|
||
|
|
static const std::vector<v3s16> &getFacePositions(u16 d);
|
||
|
|
|
||
|
|
private:
|
||
|
|
static const std::vector<v3s16> &generateFacePosition(u16 d);
|
||
|
|
static UNORDERED_MAP<u16, std::vector<v3s16> > cache;
|
||
|
|
static Mutex cache_mutex;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|