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/*
* Copyright (C) 2005-2009 MaNGOS <http://www.mangosproject.org/>
*
* Copyright (C) 2008-2009 Trinity <http://www.trinitycore.org/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _SHORTBOX_H
#define _SHORTBOX_H
#include <G3D/Vector3.h>
#include <G3D/AABox.h>
#include <G3D/Triangle.h>
#include <G3D/Ray.h>
#include "ShortVector.h"
/**
This is a box and a triangle Class using ShortVectors. Each vector has 16 bit an a fixed point 12.4 representation.
*/
namespace VMAP
{
class ShortBox
{
private:
ShortVector iV1;
ShortVector iV2;
public:
ShortBox() {}
inline const ShortVector& getLo() const { return(iV1); }
inline const ShortVector& getHi() const { return(iV2); }
inline void setLo(const ShortVector& pV){ iV1 = pV; }
inline void setHi(const ShortVector& pV){ iV2 = pV; }
inline void setLo(const G3D::Vector3& pV){ iV1 = ShortVector(pV); }
inline void setHi(const G3D::Vector3& pV){ iV2 = ShortVector(pV); }
inline bool operator==(const ShortBox& b) const
{
return ((iV1 == b.iV1) && (iV2 == b.iV2));
}
inline bool operator!=(const ShortBox& b) const
{
return !((iV1 == b.iV1) && (iV2 == b.iV2));
}
};
//=====================================================================
#ifdef _DEBUG_VMAPS
#ifndef gBoxArray
extern G3D::Vector3 p1,p2,p3,p4,p5,p6,p7;
extern G3D::Array<G3D::AABox>gBoxArray;
extern G3D::Array<G3D::Triangle>gTriArray;
extern int gCount1, gCount2, gCount3, gCount4;
extern bool myfound;
#endif
#endif
static const G3D::Vector3 dummyZeroPosition = G3D::Vector3(0,0,0);
class TriangleBox
{
private:
ShortVector _vertex[3];
//ShortBox iBox;
public:
inline TriangleBox() { }
inline TriangleBox(const ShortVector& pV1, const ShortVector& pV2, const ShortVector& pV3)
{
_vertex[0] = pV1;
_vertex[1] = pV2;
_vertex[2] = pV3;
}
inline const ShortVector& vertex (int n) const
{
return(_vertex[n]);
}
inline const ShortBox getBounds()const
{
ShortBox box;
ShortVector lo = _vertex[0];
ShortVector hi = lo;
for (int i = 1; i < 3; ++i)
{
lo = lo.min(_vertex[i]);
hi = hi.max(_vertex[i]);
}
box.setLo(lo);
box.setHi(hi);
return(box);
}
inline const G3D::Vector3& getBasePosition() { return(dummyZeroPosition); }
inline const G3D::AABox getAABoxBounds() const { ShortBox box = getBounds(); return(G3D::AABox(box.getLo().getVector3(), box.getHi().getVector3())); }
inline bool operator==(const TriangleBox& t) const
{
return ((_vertex[0] == t._vertex[0]) && (_vertex[1] == t._vertex[1]) &&(_vertex[2] == t._vertex[2]));
}
inline bool operator!=(const TriangleBox& t) const
{
return !((_vertex[0] == t._vertex[0]) && (_vertex[1] == t._vertex[1]) &&(_vertex[2] == t._vertex[2]));
}
inline void intersect(const G3D::Ray& pRay, float& pMaxDist, bool /*pStopAtFirstHitDummy*/, G3D::Vector3& /*pOutLocationDummy*/, G3D::Vector3& /*pOutNormalDummy*/) const
{
static const double epsilon = 0.00001;
G3D::Triangle testT(vertex(0).getVector3(),vertex(1).getVector3(),vertex(2).getVector3());
float t = pRay.intersectionTime(testT);
if ((t < pMaxDist) || t < (pMaxDist + epsilon))
pMaxDist = t;
else
{
testT = G3D::Triangle(vertex(2).getVector3(),vertex(1).getVector3(),vertex(0).getVector3());
#ifdef _DEBUG_VMAPS
{
G3D::Triangle myt(testT.vertex(0)+p6, testT.vertex(1)+p6,testT.vertex(2)+p6);
gTriArray.push_back(myt);
}
#endif
t = pRay.intersectionTime(testT);
if ((t < pMaxDist) || t < (pMaxDist + epsilon))
pMaxDist = t;
}
}
};
}
#endif
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