mirror of https://github.com/TTimo/GtkRadiant.git
160 lines
3.3 KiB
C
160 lines
3.3 KiB
C
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant 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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GtkRadiant 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 GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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----------------------------------------------------------------------------------
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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* marker */
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#define TREE_C
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/* dependencies */
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#include "q3map2.h"
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void RemovePortalFromNode (portal_t *portal, node_t *l);
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node_t *NodeForPoint (node_t *node, vec3_t origin)
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{
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plane_t *plane;
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vec_t d;
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while (node->planenum != PLANENUM_LEAF)
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{
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plane = &mapplanes[node->planenum];
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d = DotProduct (origin, plane->normal) - plane->dist;
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if (d >= 0)
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node = node->children[0];
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else
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node = node->children[1];
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}
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return node;
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}
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/*
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=============
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FreeTreePortals_r
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=============
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*/
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void FreeTreePortals_r (node_t *node)
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{
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portal_t *p, *nextp;
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int s;
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// free children
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if (node->planenum != PLANENUM_LEAF)
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{
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FreeTreePortals_r (node->children[0]);
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FreeTreePortals_r (node->children[1]);
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}
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// free portals
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for (p=node->portals ; p ; p=nextp)
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{
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s = (p->nodes[1] == node);
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nextp = p->next[s];
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RemovePortalFromNode (p, p->nodes[!s]);
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FreePortal (p);
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}
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node->portals = NULL;
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}
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/*
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=============
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FreeTree_r
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=============
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*/
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void FreeTree_r (node_t *node)
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{
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// free children
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if (node->planenum != PLANENUM_LEAF)
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{
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FreeTree_r (node->children[0]);
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FreeTree_r (node->children[1]);
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}
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// free bspbrushes
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FreeBrushList (node->brushlist);
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// free the node
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if (node->volume)
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FreeBrush (node->volume);
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free (node);
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}
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/*
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=============
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FreeTree
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=============
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*/
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void FreeTree (tree_t *tree)
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{
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FreeTreePortals_r (tree->headnode);
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FreeTree_r (tree->headnode);
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free (tree);
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}
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//===============================================================
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void PrintTree_r (node_t *node, int depth)
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{
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int i;
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plane_t *plane;
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brush_t *bb;
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for (i=0 ; i<depth ; i++)
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Sys_Printf (" ");
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if (node->planenum == PLANENUM_LEAF)
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{
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if (!node->brushlist)
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Sys_Printf ("NULL\n");
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else
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{
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for (bb=node->brushlist ; bb ; bb=bb->next)
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Sys_Printf ("%d ", bb->original->brushNum);
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Sys_Printf ("\n");
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}
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return;
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}
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plane = &mapplanes[node->planenum];
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Sys_Printf ("#%d (%5.2f %5.2f %5.2f):%5.2f\n", node->planenum,
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plane->normal[0], plane->normal[1], plane->normal[2],
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plane->dist);
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PrintTree_r (node->children[0], depth+1);
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PrintTree_r (node->children[1], depth+1);
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}
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