quakeforge/tools/qfbsp/include/surfaces.h

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/*
Copyright (C) 1996-1997 Id Software, Inc.
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
See file, 'COPYING', for details.
*/
#ifndef surfaces_h
#define surfaces_h
#include "QF/bspfile.h"
/** \defgroup qfbsp_surface Surface Functions
\ingroup qfbsp
*/
//@{
struct visfacet_s;
struct node_s;
struct surface_s;
typedef struct edgeface_s {
struct visfacet_s *f[2];
} edgeface_t;
extern int c_cornerverts;
extern int c_tryedges;
extern edgeface_t *edgefaces;
extern int firstmodeledge;
extern int firstmodelface;
/** Allocate a new face.
Increases \c c_activefaces by one.
\return Pointer to the new face.
*/
face_t *AllocFace (void);
/** Free a face.
Only the first face will be freed. If the face is linked to another face,
that face will have to be freed seperately.
Reduces \c c_activefaces by one.
\param f The face to free.
*/
void FreeFace (face_t *f);
/** Allocate a new surface.
Increases \c c_activesurfaces by one.
\return Pointer to the new surface.
*/
surface_t *AllocSurface (void);
/** Free a surface.
Only the first surface will be freed. If the surface is linked to another
surface, that surface will have to be freed seperately.
Reduces \c c_activefaces by one.
\param s The face to free.
*/
void FreeSurface (surface_t *s);
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/** Split any faces that are too big.
If the face is > options.subdivide_size in either texture direction,
carve off a valid sized piece and insert the remainder in the next link.
\param f The face to subdivide.
\param prevptr The address of the pointer to this face. For nice linked
list manipulation.
*/
void SubdivideFace (struct visfacet_s *f, struct visfacet_s **prevptr);
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/** Free the current node tree and return a new chain of the surfaces that
have inside faces.
*/
struct surface_s *GatherNodeFaces (struct node_s *headnode);
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/** Give edges to all the faces in the bsp tree.
\param headnode The root of the bsp tree.
*/
void MakeFaceEdges (struct node_s *headnode);
//@}
#endif//surfaces_h