54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1997 Greg Lewis
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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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#pragma once
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struct qbsp_plane_t
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{
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vec3_t normal;
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vec_t dist;
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int type;
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int outputplanenum; // -1=unassigned, only valid after ExportNodePlanes
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};
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struct winding_t
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{
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int numpoints;
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vec3_t points[MAXEDGES]; // variable sized
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};
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winding_t *BaseWindingForPlane(const qbsp_plane_t *p);
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void CheckWinding(const winding_t *w);
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winding_t *NewWinding(int points);
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winding_t *CopyWinding(const winding_t *w);
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void CopyWindingInto(winding_t *dest, const winding_t *src); // FIXME: get rid of this
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winding_t *FlipWinding(const winding_t *w);
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winding_t *ClipWinding(winding_t *in, const qbsp_plane_t *split, bool keepon);
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void DivideWinding(const winding_t *in, const qbsp_plane_t *split, winding_t **front, winding_t **back);
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void MidpointWinding(const winding_t *w, vec3_t v);
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/* Helper function for ClipWinding and it's variants */
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void CalcSides(const winding_t *in, const qbsp_plane_t *split, int *sides, vec_t *dists, int counts[3]);
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vec_t WindingArea(const winding_t *w);
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void ChopWindingInPlace(winding_t **w, const vec3_t normal, vec_t dist, vec_t epsilon);
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