/****************************************************************************
 *                  polygon.h
 *
 * This module contains all defines, typedefs, and prototypes for POLYGON.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.
 *---------------------------------------------------------------------------
 *
 *===========================================================================
 * This file is part of MegaPOV, a modified and unofficial version of POV-Ray
 * For more information on MegaPOV visit our website:
 * http://megapov.inetart.net/
 *===========================================================================
 *
 * $RCSfile: polygon.h,v $
 * $Revision: 1.9 $
 * $Author: chris $
 *
 *****************************************************************************/


#ifndef POLYGON_H
#define POLYGON_H

BEGIN_POV_NAMESPACE

/*****************************************************************************
* Global preprocessor definitions
******************************************************************************/

#define POLYGON_OBJECT (BASIC_OBJECT)



/*****************************************************************************
* Global typedefs
******************************************************************************/

typedef struct Polygon_Data_Struct POLYGON_DATA;
typedef struct Polygon_Struct POLYGON;

struct Polygon_Data_Struct
{
  int References;
  int Number;
  UV_VECT *Points;
};

struct Polygon_Struct
{
  OBJECT_FIELDS
  VECTOR S_Normal;
  POLYGON_DATA *Data;
};



/*****************************************************************************
* Global variables
******************************************************************************/

#ifdef IS_PATCH
extern METHODS Polygon_Methods;
#endif

/*****************************************************************************
* Global functions
******************************************************************************/

POLYGON *Create_Polygon (void);
void    Compute_Polygon (POLYGON *Polyg, int Number, VECTOR *Points);

END_POV_NAMESPACE

#endif
