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CnC_Renegade/Code/WWMath/wwmath.cpp

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/*
** Command & Conquer Renegade(tm)
** Copyright 2025 Electronic Arts Inc.
**
** 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/***********************************************************************************************
*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
***********************************************************************************************
* *
* Project Name : WWMath *
* *
* $Archive:: /Commando/Code/wwmath/wwmath.cpp $*
* *
* Author:: Eric_c *
* *
* $Modtime:: 5/10/01 10:52p $*
* *
* $Revision:: 11 $*
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "wwmath.h"
#include "wwhack.h"
#include "lookuptable.h"
#include <stdlib.h>
#include "wwdebug.h"
#include "wwprofile.h"
// TODO: convert to use loouptablemanager...
float _FastAcosTable[ARC_TABLE_SIZE];
float _FastAsinTable[ARC_TABLE_SIZE];
float _FastSinTable[SIN_TABLE_SIZE];
float _FastInvSinTable[SIN_TABLE_SIZE];
void WWMath::Init(void)
{
LookupTableMgrClass::Init();
for (int a=0;a<ARC_TABLE_SIZE;++a) {
float cv=float(a-ARC_TABLE_SIZE/2)*(1.0f/(ARC_TABLE_SIZE/2));
_FastAcosTable[a]=acos(cv);
_FastAsinTable[a]=asin(cv);
}
for (a=0;a<SIN_TABLE_SIZE;++a) {
float cv= (float)a * 2.0f * WWMATH_PI / SIN_TABLE_SIZE; //float(a-SIN_TABLE_SIZE/2)*(1.0f/(SIN_TABLE_SIZE/2));
_FastSinTable[a]=sin(cv);
if (a>0) {
_FastInvSinTable[a]=1.0f/_FastSinTable[a];
} else {
_FastInvSinTable[a]=WWMATH_FLOAT_MAX;
}
}
}
void WWMath::Shutdown(void)
{
LookupTableMgrClass::Shutdown();
}
float WWMath::Random_Float(void)
{
return ((float)(rand() & 0xFFF)) / (float)(0xFFF);
}
/*
** Force link some modules from this library.
*/
void Do_Force_Links(void)
{
FORCE_LINK(curve);
FORCE_LINK(hermitespline);
FORCE_LINK(catmullromspline);
FORCE_LINK(cardinalspline);
FORCE_LINK(tcbspline);
}