mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-22 22:27:05 +00:00
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
|
//========= Copyright Valve Corporation, All rights reserved. ============//
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
// $Workfile: $
|
||
|
|
// $Date: $
|
||
|
|
//
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
// $Log: $
|
||
|
|
//
|
||
|
|
// $NoKeywords: $
|
||
|
|
//=============================================================================//
|
||
|
|
|
||
|
|
#ifndef POLYLIB_H
|
||
|
|
#define POLYLIB_H
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#ifndef MATHLIB_H
|
||
|
|
#include "mathlib/mathlib.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct winding_t
|
||
|
|
{
|
||
|
|
int numpoints;
|
||
|
|
Vector *p; // variable sized
|
||
|
|
int maxpoints;
|
||
|
|
winding_t *next;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define MAX_POINTS_ON_WINDING 64
|
||
|
|
|
||
|
|
// you can define on_epsilon in the makefile as tighter
|
||
|
|
// point on plane side epsilon
|
||
|
|
// todo: need a world-space epsilon, a lightmap-space epsilon, and a texture space epsilon
|
||
|
|
// or at least convert from a world-space epsilon to lightmap and texture space epsilons
|
||
|
|
#ifndef ON_EPSILON
|
||
|
|
#define ON_EPSILON 0.1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
winding_t *AllocWinding (int points);
|
||
|
|
vec_t WindingArea (winding_t *w);
|
||
|
|
void WindingCenter (winding_t *w, Vector ¢er);
|
||
|
|
vec_t WindingAreaAndBalancePoint( winding_t *w, Vector ¢er );
|
||
|
|
void ClipWindingEpsilon (winding_t *in, const Vector &normal, vec_t dist,
|
||
|
|
vec_t epsilon, winding_t **front, winding_t **back);
|
||
|
|
|
||
|
|
// translates everything by offset, then does the clip, then translates back (to keep precision)
|
||
|
|
void ClipWindingEpsilon_Offset( winding_t *in, const Vector &normal, vec_t dist, vec_t epsilon, winding_t **front, winding_t **back, const Vector &offset );
|
||
|
|
|
||
|
|
void ClassifyWindingEpsilon( winding_t *in, const Vector &normal, vec_t dist,
|
||
|
|
vec_t epsilon, winding_t **front, winding_t **back, winding_t **on);
|
||
|
|
void ClassifyWindingEpsilon_Offset( winding_t *in, const Vector &normal, vec_t dist,
|
||
|
|
vec_t epsilon, winding_t **front, winding_t **back, winding_t **on, const Vector &offset);
|
||
|
|
|
||
|
|
winding_t *ChopWinding (winding_t *in, const Vector &normal, vec_t dist);
|
||
|
|
winding_t *CopyWinding (winding_t *w);
|
||
|
|
winding_t *ReverseWinding (winding_t *w);
|
||
|
|
winding_t *BaseWindingForPlane (const Vector &normal, vec_t dist);
|
||
|
|
void CheckWinding (winding_t *w);
|
||
|
|
void WindingPlane (winding_t *w, Vector &normal, vec_t *dist);
|
||
|
|
void RemoveColinearPoints (winding_t *w);
|
||
|
|
int WindingOnPlaneSide (winding_t *w, const Vector &normal, vec_t dist);
|
||
|
|
void FreeWinding (winding_t *w);
|
||
|
|
void WindingBounds (winding_t *w, Vector &mins, Vector &maxs);
|
||
|
|
|
||
|
|
void ChopWindingInPlace (winding_t **w, const Vector &normal, vec_t dist, vec_t epsilon);
|
||
|
|
// frees the original if clipped
|
||
|
|
|
||
|
|
bool PointInWinding( Vector const &pt, winding_t *pWinding );
|
||
|
|
|
||
|
|
// translates a winding by offset
|
||
|
|
void TranslateWinding( winding_t *pWinding, const Vector &offset );
|
||
|
|
|
||
|
|
void pw(winding_t *w);
|
||
|
|
|
||
|
|
|
||
|
|
#endif // POLYLIB_H
|