mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-26 19:55:44 +00:00
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* 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 General Public License for more details.
|
|
|
|
* You should have received a copy of the GNU 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 COMMON_SINETABLES_H
|
|
#define COMMON_SINETABLES_H
|
|
|
|
namespace Common {
|
|
|
|
class SineTable {
|
|
public:
|
|
/**
|
|
* Construct a sine table with the specified bit precision
|
|
*
|
|
* @param bitPrecision Precision of the table, which must be in range [4, 16]
|
|
*/
|
|
SineTable(int bitPrecision);
|
|
~SineTable();
|
|
|
|
/**
|
|
* Get pointer to table
|
|
*
|
|
* This table contains 2^bitPrecision/2 entries.
|
|
* The layout of this table is as follows:
|
|
* - Entries 0 up to (excluding) 2^bitPrecision/4:
|
|
* sin(0) till (excluding) sin(1/2*pi)
|
|
* - Entries 2^bitPrecision/4 up to (excluding) 2^bitPrecision/2:
|
|
* sin(pi) till (excluding) sin(3/2*pi)
|
|
*/
|
|
const float *getTable() { return _table; }
|
|
|
|
/**
|
|
* Get pointer to table
|
|
*/
|
|
int getPrecision() { return _bitPrecision; }
|
|
|
|
private:
|
|
float *_table;
|
|
int _bitPrecision;
|
|
};
|
|
|
|
} // End of namespace Common
|
|
|
|
#endif // COMMON_SINETABLES_H
|