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Documentation                       Search   aabbox.h Go to the documentation of this file. /* Copyright, 2000 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL 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, or (at your option) * any later version. * NEVRAX NEL 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 NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #ifndef NL_AABBOX_H #define NL_AABBOX_H #include "nel/misc/types_nl.h" #include "nel/misc/vector.h" #include "nel/misc/plane.h" #include "nel/misc/common.h" #include "nel/misc/stream.h" namespace NLMISC { class CMatrix; class CBSphere; using NLMISC::CVector; using NLMISC::CPlane; // *************************************************************************** class CAABBox { protected: CVector Center; CVector HalfSize; public: CAABBox() : Center(0,0,0), HalfSize(0,0,0) {} // @{ void setCenter(const CVector &center) {Center= center;} void setHalfSize(const CVector &hs) {HalfSize= hs;} void setSize(const CVector &s) {HalfSize= s/2;} void setMinMax(const CVector &bmin, const CVector &bmax) { Center= (bmin+bmax)/2; HalfSize= bmax-Center; } void extend(const CVector &v); // @{ CVector getMin() const {return Center-HalfSize;} CVector getMax() const {return Center+HalfSize;} void getMin(CVector &ret) const {ret= Center-HalfSize;} void getMax(CVector &ret) const {ret= Center+HalfSize;} const CVector &getCenter() const {return Center;} const CVector &getHalfSize() const {return HalfSize;} CVector getSize() const {return HalfSize*2;} void getSize(CVector &ret) const {ret= HalfSize*2;} float getRadius() const {return HalfSize.norm();} // @} // @{ bool clipFront(const CPlane &p) const; bool clipBack(const CPlane &p) const; bool include(const CVector &a) const; bool include(const CAABBox &box) const; bool intersect(const CAABBox &box) const; bool intersect(const CVector &a, const CVector &b, const CVector &c) const; bool intersect(const CBSphere &s) const; // @} // @{ void makePyramid(CPlane planes[6]) const; static CAABBox computeAABBoxUnion(const CAABBox &b1, const CAABBox &b2); void computeIntersection(const CAABBox &b1, const CAABBox &b2); static CAABBox transformAABBox(const CMatrix &mat, const CAABBox &box); // @} void serial(NLMISC::IStream &f); }; // *************************************************************************** class CAABBoxExt : private CAABBox { protected: float RadiusMin, RadiusMax; void updateRadius() { // The bounding sphere. RadiusMax= CAABBox::getRadius(); // The including sphere. RadiusMin= NLMISC::minof((float)fabs(HalfSize.x), (float)fabs(HalfSize.y), (float)fabs(HalfSize.z)); } public: CAABBoxExt() {RadiusMin= RadiusMax=0;} CAABBoxExt(const CAABBox &o) {RadiusMin= RadiusMax=0; *this=o;} // @{ void setCenter(const CVector &center) {Center= center;} void setHalfSize(const CVector &hs) {HalfSize= hs; updateRadius();} void setSize(const CVector &s) {HalfSize= s/2; updateRadius();} void setMinMax(const CVector &bmin, const CVector &bmax) { Center= (bmin+bmax)/2; HalfSize= bmax-Center; updateRadius(); } CAABBoxExt &operator=(const CAABBox &o) {Center= o.getCenter(); HalfSize= o.getHalfSize(); updateRadius(); return (*this);} // @{ CVector getMin() const {return CAABBox::getMin();} CVector getMax() const {return CAABBox::getMax();} const CVector &getCenter() const {return Center;} const CVector &getHalfSize() const {return HalfSize;} CVector getSize() const {return HalfSize*2;} float getRadius() const {return RadiusMax;} CAABBox getAABBox() const { CAABBox box; box.setCenter(getCenter()); box.setHalfSize(getHalfSize()); return box; } // @} // @{ bool clipFront(const CPlane &p) const; bool clipBack(const CPlane &p) const; bool intersect(const CAABBoxExt &box) const {return CAABBox::intersect(box);} bool intersect(const CVector &a, const CVector &b, const CVector &c) const {return CAABBox::intersect(a,b,c);} // @} void serial(NLMISC::IStream &f); }; } // NLMISC #endif // NL_AABBOX_H /* End of aabbox.h */