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https://git.code.sf.net/p/quake/quakeforge
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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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#ifndef qfbsp_brush_h
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#define qfbsp_brush_h
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#include "QF/darray.h"
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#include "QF/mathlib.h"
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#include "bsp5.h"
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#include "map.h"
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/** \defgroup qfbsp_brush Brush Functions
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\ingroup qfbsp
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*/
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///@{
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#define NUM_HULLS 2 // normal and +16
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#define NUM_CONTENTS 2 // solid and water
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typedef struct brush_s {
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struct brush_s *next;
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vec3_t mins, maxs;
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struct visfacet_s *faces;
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int contents;
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} brush_t;
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typedef struct brushset_s {
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vec3_t mins, maxs;
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brush_t *brushes; // NULL terminated list
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} brushset_t;
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typedef struct DARRAY_TYPE (plane_t) planeset_t;
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extern planeset_t planes;
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/** Allocate a new brush.
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\return Pointer to the new brush.
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*/
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brush_t *AllocBrush (void);
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/** Load the brushes from the entity.
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\param ent The entity from which to load the brushes.
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\param hullnum The number of the hull for which to load the brushes.
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\return The brush set holding the brushes loaded from the entity.
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*/
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brushset_t *Brush_LoadEntity (entity_t *ent, int hullnum);
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/** Determine the primary axis of the normal.
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\param normal Must be canonical.
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*/
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int PlaneTypeForNormal (const vec3_t normal) __attribute__((pure));
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/** Make the plane canonical.
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A cononical plane is one whose normal points towards +inf on its primary
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axis. The primary axis is that which has the largest magnitude of the
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vector's components.
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\param dp The plane to make canonical.
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\return 1 if the plane was flipped, otherwise 0.
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*/
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int NormalizePlane (plane_t *dp);
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/** Add a plane to the global list of planes.
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Make the plane canonical, and add it to the global list of planes if it
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does not duplicate a plane that is already in the list. If the plane is
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flipped while being made canonical, side will be set to 1, otherwise side
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will be 0.
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\param dplane The plane to add.
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\param side The side of the plane that will be front.
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\return global plane number.
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*/
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int FindPlane (const plane_t *dplane, int *side);
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///@}
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#endif//qfbsp_brush_h
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