diff options
author | ShadowNinja <shadowninja@minetest.net> | 2015-07-06 12:53:30 -0400 |
---|---|---|
committer | ShadowNinja <shadowninja@minetest.net> | 2017-05-06 16:09:45 -0400 |
commit | 77597c4ff3b666cc37dd257952938df48d7e6f09 (patch) | |
tree | 00e8ce314ddf1c3eb52bbe6f3521b8a1ea0200ff /src/face_position_cache.h | |
parent | b6f4a9c7e1a4f0bac66fd6f6ff844425ac775975 (diff) | |
download | minetest-77597c4ff3b666cc37dd257952938df48d7e6f09.tar.gz minetest-77597c4ff3b666cc37dd257952938df48d7e6f09.tar.bz2 minetest-77597c4ff3b666cc37dd257952938df48d7e6f09.zip |
Clean up numeric.h and split FacePositionCache from it
I also optiized FacePositionCache a bit: I removed a map
lookup and vector copy from both branches of getFacePosition.
Diffstat (limited to 'src/face_position_cache.h')
-rw-r--r-- | src/face_position_cache.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/face_position_cache.h b/src/face_position_cache.h new file mode 100644 index 000000000..c1d2841c4 --- /dev/null +++ b/src/face_position_cache.h @@ -0,0 +1,44 @@ +/* +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 |