95 lines
2.6 KiB
C
95 lines
2.6 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_portals_h
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#define qfbsp_portals_h
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/** \defgroup qfbsp_portals Portal Functions
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\ingroup qfbsp
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A portal is the polygonal interface between two leaf nodes, regardless
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of the contents of the two leaf nodes.
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Decision nodes will not have portals on them, though as part of the
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portal building process, they will temporarily have portals.
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*/
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//@{
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struct node_s;
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typedef struct portal_s {
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int planenum; ///< plane holding this portal
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struct node_s *nodes[2]; ///< [0] = front side of plane
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struct portal_s *next[2]; ///< [0] = front side of plane
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struct winding_s *winding; ///< this portal's polygon
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} portal_t;
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extern struct node_s outside_node; // portals outside the world face this
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/** Allocate a new portal.
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Increases \c c_activeportals by one.
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\return Pointer to the new portal.
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*/
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portal_t *AllocPortal (void);
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/** Free a portal.
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Only the first portal will be freed. If the portal is linked to other
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portals, those portals will have to be freed seperately.
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Reduces \c c_activeportals by one.
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\param p The portal to free.
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*/
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void FreePortal (portal_t *p);
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/** Builds the exact polyhedrons for the nodes and leafs.
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\param headnode The root of the world bsp.
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*/
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void PortalizeWorld (struct node_s *headnode);
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/** Builds the exact polyhedrons for the nodes and leafs.
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Like PortalizeWorld, but stop at detail nodes - Alexander Malmberg.
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\param headnode The root of the world bsp.
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*/
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void PortalizeWorldDetail (struct node_s *headnode); // stop at detail nodes
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/** Free all portals from a node and its decendents.
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\param node The node from which to remove and free portals.
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*/
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void FreeAllPortals (struct node_s *node);
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/** Write the map's portals to the portal file.
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\param headnode The root of the map's bsp.
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*/
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void WritePortalfile (struct node_s *headnode);
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//@}
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#endif//qfbsp_portals_h
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