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OS/2 Shareware BBS: Graphics
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povsrc31.zip
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interior.c
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1999-12-11
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/****************************************************************************
* interior.c
*
* This module contains all functions for interior stuff.
*
* from Persistence of Vision(tm) Ray Tracer
* Copyright 1996,1999 Persistence of Vision Team
*---------------------------------------------------------------------------
* 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 Team. There are strict rules under
* which you are permitted to use this file. The rules are in the file
* named POVLEGAL.DOC which should be distributed with this file.
* If POVLEGAL.DOC is not available or for more info please contact the POV-Ray
* Team Coordinator by email to team-coord@povray.org or visit us on the web at
* http://www.povray.org. The latest version of POV-Ray may be found at this site.
*
* 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.
*
*****************************************************************************/
#include "frame.h"
#include "vector.h"
#include "povproto.h"
#include "chi2.h"
#include "colour.h"
#include "povray.h"
#include "texture.h"
#include "pigment.h"
#include "objects.h"
#include "lighting.h"
#include "matrices.h"
#include "interior.h"
#include "povray.h"
#include "point.h"
#include "texture.h"
#include "ray.h"
/*****************************************************************************
* Local preprocessor defines
******************************************************************************/
/*****************************************************************************
* Local typedefs
******************************************************************************/
/*****************************************************************************
* Local variables
******************************************************************************/
/*****************************************************************************
* Static functions
******************************************************************************/
/*****************************************************************************
*
* FUNCTION
*
* Init_Interior
*
* INPUT
*
* OUTPUT
*
* RETURNS
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Initialize interior.
*
* CHANGES
*
* Jan 1997 : Creation.
*
******************************************************************************/
void Init_Interior(INTERIOR *Interior)
{
}
/*****************************************************************************
*
* FUNCTION
*
* Create_Interior
*
* INPUT
*
* OUTPUT
*
* RETURNS
*
* INTERIOR * - created interior
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Create a interior.
*
* CHANGES
*
* Dec 1994 : Creation.
* Sep 1999 : Fade_Colour added - Edward Coffey
*
******************************************************************************/
INTERIOR *Create_Interior()
{
INTERIOR *New;
New = (INTERIOR *)POV_MALLOC(sizeof(INTERIOR), "interior");
New->References = 1;
New->IOR = 0.0;
New->Dispersion = 1.0;
New->Disp_NElems = 1; /* DEFAULT_DISP_NELEMS */
New->Old_Refract = 1.0;
New->Caustics = 0.0;
New->Fade_Distance = 0.0;
New->Fade_Power = 0.0;
Make_Colour(New->Fade_Colour, 0.0, 0.0, 0.0);
New->IMedia = NULL;
return(New);
}
/*****************************************************************************
*
* FUNCTION
*
* Copy_Interior
*
* INPUT
*
* Old - interior to copy
*
* OUTPUT
*
* RETURNS
*
* INTERIOR * - new interior
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Copy an interior.
*
* CHANGES
*
* Dec 1994 : Creation.
*
******************************************************************************/
INTERIOR *Copy_Interior(INTERIOR *Old)
{
INTERIOR *New;
if (Old != NULL)
{
New = Create_Interior();
*New = *Old;
New->IMedia = Copy_Media(Old->IMedia);
return(New);
}
else
{
return(NULL);
}
}
/*****************************************************************************
*
* FUNCTION
*
* Copy_Interior_Pointer
*
* INPUT
*
* Old - interior to copy
*
* OUTPUT
*
* RETURNS
*
* INTERIOR * - new interior
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Copy an interior by increasing number of references.
*
* CHANGES
*
* Dec 1994 : Creation.
*
******************************************************************************/
INTERIOR *Copy_Interior_Pointer(INTERIOR *Old)
{
if (Old != NULL)
{
Old->References++;
}
return(Old);
}
/*****************************************************************************
*
* FUNCTION
*
* Destroy_Interior
*
* INPUT
*
* Interior - interior to destroy
*
* OUTPUT
*
* RETURNS
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Destroy an interior.
*
* CHANGES
*
* Dec 1994 : Creation.
*
******************************************************************************/
void Destroy_Interior(INTERIOR *Interior)
{
if ((Interior != NULL) && (--(Interior->References) == 0))
{
Destroy_Media(Interior->IMedia);
POV_FREE(Interior);
}
}
/*****************************************************************************
*
* FUNCTION
*
* Transform_Interior
*
* INPUT
*
* OUTPUT
*
* RETURNS
*
* AUTHOR
*
* Dieter Bayer
*
* DESCRIPTION
*
* Transform interior.
*
* CHANGES
*
* Jan 1997 : Creation.
*
******************************************************************************/
void Transform_Interior(INTERIOR *Interior, TRANSFORM *Trans)
{
if (Interior != NULL)
{
if (Interior->IMedia != NULL)
{
Transform_Media(Interior->IMedia, Trans);
}
}
}
MATERIAL *Create_Material()
{
MATERIAL *New;
New = (MATERIAL *)POV_MALLOC(sizeof(MATERIAL), "material");
New->Texture = NULL;
#ifdef InteriorTexturePatch
New->Interior_Texture = NULL;/*Chris Huff: Interior Texture patch*/
#endif
New->Interior = NULL;
return(New);
}
MATERIAL *Copy_Material(MATERIAL *Old)
{
MATERIAL *New;
if (Old != NULL)
{
New = Create_Material();
*New = *Old;
New->Texture = Copy_Textures(Old->Texture);
#ifdef InteriorTexturePatch
New->Interior_Texture = Copy_Textures(Old->Interior_Texture);/*Chris Huff: Interior Texture patch*/
#endif
New->Interior = Copy_Interior(Old->Interior);
return(New);
}
else
{
return(NULL);
}
}
void Destroy_Material(MATERIAL *Material)
{
if (Material != NULL)
{
Destroy_Textures(Material->Texture);
#ifdef InteriorTexturePatch
Destroy_Textures(Material->Interior_Texture);/*Chris Huff: Interior Texture patch*/
#endif
Destroy_Interior(Material->Interior);
POV_FREE(Material);
}
}