88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
/*
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Copyright (C) 1999-2006 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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#pragma once
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#include "qmath.h"
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struct winding_t
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{
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int numpoints;
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Vector3 p[];
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};
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#define MAX_POINTS_ON_WINDING 512
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// you can define on_epsilon in the makefile as tighter
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#ifndef ON_EPSILON
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#define ON_EPSILON 0.1
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#endif
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enum EPlaneSide
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{
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eSideFront = 0, //! in front of plane ---->| *
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eSideBack = 1, //! behind the plane -*-->|
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eSideOn = 2,
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eSideCross = 3,
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};
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winding_t *AllocWinding( int points );
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float WindingArea( const winding_t *w );
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Vector3 WindingCenter( const winding_t *w );
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void ClipWindingEpsilon( winding_t *in, const Plane3f& plane,
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float epsilon, winding_t **front, winding_t **back );
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void ClipWindingEpsilonStrict( winding_t *in, const Plane3f& plane,
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float epsilon, winding_t **front, winding_t **back );
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winding_t *ChopWinding( winding_t *in, const Plane3f& plane );
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winding_t *CopyWinding( const winding_t *w );
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winding_t *ReverseWinding( const winding_t *w );
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winding_t *BaseWindingForPlane( const Plane3f& plane );
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void CheckWinding( winding_t *w );
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Plane3f WindingPlane( const winding_t *w );
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void RemoveColinearPoints( winding_t *w );
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EPlaneSide WindingOnPlaneSide( const winding_t *w, const Plane3f& plane );
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void FreeWinding( winding_t *w );
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MinMax WindingBounds( const winding_t *w );
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void AddWindingToConvexHull( winding_t *w, winding_t **hull, const Vector3& normal );
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void ChopWindingInPlace( winding_t **w, const Plane3f& plane, float epsilon );
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// frees the original if clipped
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void pw( winding_t *w );
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///////////////////////////////////////////////////////////////////////////////////////
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// Below is double-precision stuff. This was initially needed by the base winding code
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// in q3map2 brush processing.
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///////////////////////////////////////////////////////////////////////////////////////
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struct winding_accu_t
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{
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int numpoints;
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DoubleVector3 p[];
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};
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winding_accu_t *BaseWindingForPlaneAccu( const Plane3f& plane );
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void ChopWindingInPlaceAccu( winding_accu_t **w, const Plane3f& plane, float epsilon );
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winding_t *CopyWindingAccuToRegular( const winding_accu_t *w );
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void FreeWindingAccu( winding_accu_t *w );
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