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doomclassic/doom/r_plane.h

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+/*
+===========================================================================
+
+Doom 3 BFG Edition GPL Source Code
+Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  
+
+Doom 3 BFG Edition Source Code 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 3 of the License, or
+(at your option) any later version.
+
+Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#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[SCREENWIDTH];
+extern short		ceilingclip[SCREENWIDTH];
+
+extern fixed_t		yslope[SCREENHEIGHT];
+extern fixed_t		distscale[SCREENWIDTH];
+
+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
+