// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id: r_plane.h,v 1.2 1998/01/04 19:29:04 pekangas Exp $
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// DESCRIPTION:
//	Refresh, visplane stuff (floor, ceilings).
//
//-----------------------------------------------------------------------------


#ifndef __R_PLANE__
#define __R_PLANE__


#include "r_data.h"

#ifdef __GNUG__
#pragma interface
#endif


// Visplane related.
extern  short*		lastopening;


typedef void (*planefunction_t) (int top, int bottom);

extern planefunction_t	floorfunc;
extern planefunction_t	ceilingfunc_t;

extern short		*floorclip;
extern short		*ceilingclip;

extern fixed_t		*yslope;
extern fixed_t		*distscale;

void resinit_r_plane_c(void);  //called before anything else

void R_InitPlanes (void);
void R_ClearPlanes (void);

void
R_MapPlane
( int		y,
  int		x1,
  int		x2 );

void
R_MakeSpans
( int		x,
  int		t1,
  int		b1,
  int		t2,
  int		b2 );

void R_DrawPlanes (void);

visplane_t*
R_FindPlane
( fixed_t	height,
  int		picnum,
  int		lightlevel );

visplane_t*
R_CheckPlane
( visplane_t*	pl,
  int		start,
  int		stop );



#endif
//-----------------------------------------------------------------------------
//
// $Log: r_plane.h,v $
// Revision 1.2  1998/01/04 19:29:04  pekangas
// Added hicolor and multiresulution support from Chi Hoang's DOS port
//
//
//-----------------------------------------------------------------------------
