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/****************************************************************************
* atmoshp.h
*
* This module contains all defines, typedefs, and prototypes for ATMOSPH.CPP.
*
* from Persistence of Vision(tm) Ray Tracer version 3.6.
* Copyright 1991-2003 Persistence of Vision Team
* Copyright 2003-2004 Persistence of Vision Raytracer Pty. Ltd.
*---------------------------------------------------------------------------
* NOTICE: This source code file is provided so that users may experiment
* with enhancements to POV-Ray and to port the software to platforms other
* than those supported by the POV-Ray developers. There are strict rules
* regarding how you are permitted to use this file. These rules are contained
* in the distribution and derivative versions licenses which should have been
* provided with this file.
*
* These licences may be found online, linked from the end-user license
* agreement that is located at http://www.povray.org/povlegal.html
*---------------------------------------------------------------------------
* This program is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
*---------------------------------------------------------------------------
* $File: //depot/povray/3.6-release/source/atmosph.h $
* $Revision: #2 $
* $Change: 2939 $
* $DateTime: 2004/07/04 13:43:26 $
* $Author: root $
* $Log$
*****************************************************************************/
#ifndef ATMOSPH_H
#define ATMOSPH_H
BEGIN_POV_NAMESPACE
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
/* Define fog types. DMF */
#define ORIG_FOG 1
#define GROUND_MIST 2
#define FOG_TYPES 2
/*****************************************************************************
* Global typedefs
******************************************************************************/
typedef struct Fog_Struct FOG;
typedef struct Rainbow_Struct RAINBOW;
typedef struct Skysphere_Struct SKYSPHERE;
struct Fog_Struct
{
int Type;
DBL Distance;
DBL Alt;
DBL Offset;
COLOUR Colour;
VECTOR Up;
TURB *Turb;
SNGL Turb_Depth;
FOG *Next;
};
struct Rainbow_Struct
{
DBL Distance;
DBL Jitter;
DBL Angle, Width;
DBL Arc_Angle, Falloff_Angle, Falloff_Width;
VECTOR Antisolar_Vector;
VECTOR Up_Vector, Right_Vector;
PIGMENT *Pigment;
RAINBOW *Next;
};
struct Skysphere_Struct
{
int Count; /* Number of pigments. */
PIGMENT **Pigments; /* Pigment(s) to use. */
TRANSFORM *Trans; /* Skysphere transformation. */
};
/*****************************************************************************
* Global variables
******************************************************************************/
/*****************************************************************************
* Global functions
******************************************************************************/
void Initialize_Atmosphere_Code (void);
void Deinitialize_Atmosphere_Code (void);
void Do_Infinite_Atmosphere (RAY *Ray, COLOUR Colour);
void Do_Finite_Atmosphere (RAY *Ray, INTERSECTION *Intersection, COLOUR Colour, int Light_Source_Flag);
FOG *Create_Fog (void);
FOG *Copy_Fog (FOG *Fog);
void Destroy_Fog (FOG *Fog);
RAINBOW *Create_Rainbow (void);
RAINBOW *Copy_Rainbow (RAINBOW *Rainbow);
void Destroy_Rainbow (RAINBOW *Rainbow);
SKYSPHERE *Create_Skysphere (void);
SKYSPHERE *Copy_Skysphere (SKYSPHERE *Skysphere);
void Destroy_Skysphere (SKYSPHERE *Skysphere);
void Scale_Skysphere (SKYSPHERE *Skysphere, VECTOR Vector);
void Rotate_Skysphere (SKYSPHERE *Skysphere, VECTOR Vector);
void Translate_Skysphere (SKYSPHERE *Skysphere, VECTOR Vector);
void Transform_Skysphere (SKYSPHERE *Skysphere, TRANSFORM *Trans);
END_POV_NAMESPACE
#endif
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