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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ *
+ * DESCRIPTION:
+ *      Renderer main interface.
+ *
+ *-----------------------------------------------------------------------------*/
+
+#ifndef __R_MAIN__
+#define __R_MAIN__
+
+#include "d_player.h"
+#include "r_data.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+//
+// POV related.
+//
+
+extern fixed_t  viewcos;
+extern fixed_t  viewsin;
+extern int      viewwidth;
+extern int      viewheight;
+extern int      viewwindowx;
+extern int      viewwindowy;
+extern int      centerx;
+extern int      centery;
+extern fixed_t  centerxfrac;
+extern fixed_t  centeryfrac;
+extern fixed_t  viewheightfrac; //e6y: for correct clipping of things
+extern fixed_t  projection;
+// proff 11/06/98: Added for high-res
+extern fixed_t  projectiony;
+extern int      validcount;
+
+//
+// Rendering stats
+//
+
+extern int rendered_visplanes, rendered_segs, rendered_vissprites;
+extern boolean rendering_stats;
+
+//
+// Lighting LUT.
+// Used for z-depth cuing per column/row,
+//  and other lighting effects (sector ambient, flash).
+//
+
+// Lighting constants.
+
+#define LIGHTLEVELS       16
+#define LIGHTSEGSHIFT      4
+#define MAXLIGHTSCALE     48
+#define LIGHTSCALESHIFT   12
+#define MAXLIGHTZ        128
+#define LIGHTZSHIFT       20
+
+// killough 3/20/98: Allow colormaps to be dynamic (e.g. underwater)
+extern const lighttable_t *(*zlight)[MAXLIGHTZ];
+extern const lighttable_t *fullcolormap;
+extern int numcolormaps;    // killough 4/4/98: dynamic number of maps
+extern const lighttable_t **colormaps;
+// killough 3/20/98, 4/4/98: end dynamic colormaps
+
+extern int          extralight;
+extern const lighttable_t *fixedcolormap;
+
+// Number of diminishing brightness levels.
+// There a 0-31, i.e. 32 LUT in the COLORMAP lump.
+
+#define NUMCOLORMAPS 32
+
+//
+// Utility functions.
+//
+
+PUREFUNC int R_PointOnSide(fixed_t x, fixed_t y, const node_t *node);
+PUREFUNC int R_PointOnSegSide(fixed_t x, fixed_t y, const seg_t *line);
+angle_t R_PointToAngle(fixed_t x, fixed_t y);
+angle_t R_PointToAngle2(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2);
+subsector_t *R_PointInSubsector(fixed_t x, fixed_t y);
+
+//
+// REFRESH - the actual rendering functions.
+//
+
+void R_RenderPlayerView(player_t *player);   // Called by G_Drawer.
+void R_Init(void);                           // Called by startup code.
+void R_SetViewSize(int blocks);              // Called by M_Responder.
+void R_ExecuteSetViewSize(void);             // cph - called by D_Display to complete a view resize
+
+#endif