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/****************************************************************************
* image.h
*
* This module contains all defines, typedefs, and prototypes for IMAGE.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/image.h $
* $Revision: #2 $
* $Change: 2939 $
* $DateTime: 2004/07/04 13:43:26 $
* $Author: root $
* $Log$
*****************************************************************************/
#ifndef IMAGE_H
#define IMAGE_H
#include "hfield.h"
BEGIN_POV_NAMESPACE
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
/* Image/Bump Map projection types. */
#define PLANAR_MAP 0
#define SPHERICAL_MAP 1
#define CYLINDRICAL_MAP 2
#define PARABOLIC_MAP 3
#define HYPERBOLIC_MAP 4
#define TORUS_MAP 5
#define PIRIFORM_MAP 6
#define OLD_MAP 7
/* Bit map interpolation types. */
#define NO_INTERPOLATION 0
#define NEAREST_NEIGHBOR 1
#define BILINEAR 2
#define CUBIC_SPLINE 3
#define NORMALIZED_DIST 4
/* NK 1998 - instead of Use_Colour_Flag */
#define USE_INDEX 0
#define USE_COLOUR 1
#define USE_ALPHA 2
/* USE_IMAGE = TRUE = 1
USE_INDEX = FALSE = 0 */
/* NK ---- */
/*****************************************************************************
* Global typedefs
******************************************************************************/
/*****************************************************************************
* Global variables
******************************************************************************/
/*****************************************************************************
* Global functions
******************************************************************************/
DBL image_pattern (VECTOR EPoint, TPATTERN *TPattern);
int image_map (VECTOR EPoint, PIGMENT *Pigment, COLOUR colour);
TEXTURE *material_map (VECTOR IPoint, TEXTURE *Texture);
void bump_map (VECTOR EPoint, TNORMAL *Tnormal, VECTOR normal);
HF_VAL image_height_at(IMAGE *Image, int x, int y);
bool is_image_opaque(IMAGE *Image);
IMAGE *Copy_Image (IMAGE *Old);
IMAGE *Create_Image (void);
void Destroy_Image (IMAGE *Image);
END_POV_NAMESPACE
#endif
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