Serious-Engine/Sources/Engine/Graphics/Fog.h

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2016-03-12 01:20:51 +01:00
/* 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. */
2016-03-11 14:57:17 +01:00
#ifndef SE_INCL_FOG_H
#define SE_INCL_FOG_H
#ifdef PRAGMA_ONCE
#pragma once
#endif
#include <Engine/Math/Vector.h>
enum AttenuationType {
AT_LINEAR, // t*density
AT_EXP, // 1-exp(-t*density)
AT_EXP2, // 1-exp(-(t*density)^2)
};
enum FogGraduationType {
FGT_CONSTANT, // constant density
FGT_LINEAR, // h*graduation
FGT_EXP, // 1-exp(-h*graduation)
};
class CFogParameters {
public:
FLOAT3D fp_vFogDir; // fog direction in absolute space
FLOAT fp_fH0; // lowest point in LUT
FLOAT fp_fH1; // bottom of fog in LUT
FLOAT fp_fH2; // top of fog in LUT
FLOAT fp_fH3; // highest point in LUT
FLOAT fp_fFar; // farthest point in LUT
INDEX fp_iSizeL; // LUT size in distance (must be pow2)
INDEX fp_iSizeH; // LUT size in depth (must be pow2)
COLOR fp_colColor; // fog color and alpha
enum AttenuationType fp_atType; // type of attenuation
FLOAT fp_fDensity; // attenuation parameter
enum FogGraduationType fp_fgtType; // type of graduation
FLOAT fp_fGraduation; // graduation parameter
};
#define HPF_VISIBLEFROMOUTSIDE (1UL<<0) // can be viewed from sectors that are not hazed
class CHazeParameters {
public:
ULONG hp_ulFlags;
FLOAT hp_fNear; // nearest point in LUT
FLOAT hp_fFar; // farthest point in LUT
INDEX hp_iSize; // LUT size in distance (must be pow2)
COLOR hp_colColor; // fog color and alpha
enum AttenuationType hp_atType; // type of attenuation
FLOAT hp_fDensity; // attenuation parameter
};
#endif /* include-once check. */