mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-05 23:44:51 +02:00
1a2ccb8f50
Conflicts: Sources/Ecc/Parser.cpp Sources/Ecc/Scanner.cpp Sources/Engine/Base/Scanner.cpp Sources/Engine/GameAgent/GameAgent.cpp Sources/Engine/Graphics/Gfx_wrapper.h Sources/Engine/Network/Network.cpp Sources/Engine/Sound/SoundDecoder.h Sources/Engine/Templates/HashTableTemplate.cpp Sources/Engine/Terrain/Terrain.h Sources/EntitiesMP/ParticleCloudsHolder.es Sources/EntitiesMP/ParticleCloudsMarker.es Sources/SeriousSam/CDCheck.h Sources/SeriousSam/Menu.cpp Sources/SeriousSam/MenuGadgets.cpp Sources/SeriousSam/SeriousSam.cpp Sources/SeriousSam/SplashScreen.cpp Sources/SeriousSam/StdH.cpp Sources/SeriousSam/StdH.h Sources/Shaders/StdH.cpp
95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd.
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of version 2 of the GNU General Public License as published by
|
|
the Free Software Foundation
|
|
|
|
|
|
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. */
|
|
|
|
#include "Engine/StdH.h"
|
|
|
|
#include <Engine/Math/Functions.h>
|
|
|
|
/////////////////////////////////////////////////////////////////////
|
|
// Snapping functions
|
|
|
|
// does "snap to grid" for given coordinate
|
|
void Snap( FLOAT &fDest, FLOAT fStep)
|
|
{
|
|
// this must use floor() to get proper snapping of negative values.
|
|
FLOAT fDiv = fDest/fStep;
|
|
FLOAT fRound = fDiv + 0.5f;
|
|
FLOAT fSnap = FLOAT(floor(fRound));
|
|
FLOAT fRes = fSnap * fStep;
|
|
fDest = fRes;
|
|
}
|
|
// does "snap to grid" for given coordinate
|
|
void Snap( DOUBLE &fDest, DOUBLE fStep)
|
|
{
|
|
// this must use floor() to get proper snapping of negative values.
|
|
DOUBLE fDiv = fDest/fStep;
|
|
DOUBLE fRound = fDiv + 0.5f;
|
|
DOUBLE fSnap = DOUBLE(floor(fRound));
|
|
DOUBLE fRes = fSnap * fStep;
|
|
fDest = fRes;
|
|
}
|
|
|
|
#if 0
|
|
// does "snap to grid" for given angle
|
|
void Snap( ANGLE &angDest, ANGLE angStep)
|
|
{
|
|
/* Watch out for unsigned-signed mixing!
|
|
All sub-expressions and arguments must be unsigned for this to work correctly!
|
|
Unfortunately, ANGLE is not an unsigned type by default, so we must cast it.
|
|
Also, angStep must be a divisor of ANGLE_180!
|
|
*/
|
|
ASSERT(ANGLE_180%angStep == 0); // don't test with ANGLE_360 ,since it is 0!
|
|
angDest = ANGLE( ((UWORD(angDest)+UWORD(angStep)/2U)/UWORD(angStep))*UWORD(angStep) );
|
|
}
|
|
#endif
|
|
|
|
double adSinQuadrants[4][2] =
|
|
{
|
|
{1.0, 0.0},
|
|
{-1.0, -90.0},
|
|
{-1.0, 0.0},
|
|
{1.0, -90.0},
|
|
};
|
|
double adCosQuadrants[4][2] =
|
|
{
|
|
{-1.0, -90.0},
|
|
{-1.0, 0.0},
|
|
{1.0, -90.0},
|
|
{1.0, 0.0},
|
|
};
|
|
|
|
FLOAT Sin(ANGLE a)
|
|
{
|
|
double aWrapped = WrapAngle(a);
|
|
double aIn90 = fmod(aWrapped, 90.0);
|
|
int iQuadrant = int(aWrapped/90.0);
|
|
double fSin = adSinQuadrants[iQuadrant][0]*
|
|
sin((aIn90+adSinQuadrants[iQuadrant][1])*PI/ANGLE_180);
|
|
return FLOAT (fSin);
|
|
}
|
|
FLOAT Cos(ANGLE a)
|
|
{
|
|
double aWrapped = WrapAngle(a);
|
|
double aIn90 = fmod(aWrapped, 90.0);
|
|
int iQuadrant = int(aWrapped/90.0);
|
|
double fCos = adCosQuadrants[iQuadrant][0]*
|
|
sin((aIn90+adCosQuadrants[iQuadrant][1])*PI/ANGLE_180);
|
|
return FLOAT (fCos);
|
|
}
|
|
FLOAT Tan(ANGLE a)
|
|
{
|
|
return Sin(a)/Cos(a);
|
|
}
|