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LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference cBezier33.h Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2002 Aaron Cameron This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ /************************************************************************ NOTICE #1 Code in this class was taken from from the web. I was unable to find any license information, so I've included the author and the source here: Bezier curves Written by Paul Bourke Original: April 1989, Updated: December 1996 http://astronomy.swin.edu.au/~pbourke/curves/bezier/ ************************************************************************/ #ifndef _n2l4_cBezier33_h #define _n2l4_cBezier33_h namespace n2l { template <class TComponent, class TTime> class cBezier33 { public: typedef cBezier33<TComponent,TTime> tThisCurve; typedef TComponent tComponent; typedef cVector3<TComponent,TComponent,TComponent> tVector; typedef TTime tTime; // Constructors /* ************************************************************ */ cBezier33() { mPoint[0].set(0,0,0); mPoint[1].set(0,0,0); mPoint[2].set(0,0,0); } /* ************************************************************ */ cBezier33( const tVector & iP0, const tVector & iP1, const tVector & iP2 ) { mPoint[0] = iP0; mPoint[1] = iP1; mPoint[2] = iP2; } /* ************************************************************ */ cBezier33( const tThisCurve & iCurve ) { mPoint[0] = iCurve.mPoint[0]; mPoint[1] = iCurve.mPoint[1]; mPoint[2] = iCurve.mPoint[2]; } /* ************************************************************ */ const tVector pointAt( const tTime & iTime ) { // See NOTICE #1 above tComponent mum1,mum12,mu2; tVector p; mu2 = iTime * iTime; mum1 = 1 - iTime; mum12 = mum1 * mum1; p.x( mPoint[0].x() * mum12 + 2 * mPoint[1].x() * mum1 * iTime + mPoint[2].x() * mu2 ); p.y( mPoint[0].y() * mum12 + 2 * mPoint[1].y() * mum1 * iTime + mPoint[2].y() * mu2 ); p.z( mPoint[0].z() * mum12 + 2 * mPoint[1].z() * mum1 * iTime + mPoint[2].z() * mu2 ); return p; } private: tVector mPoint[3]; }; // class } // namespace n2l #endif

©2009 Aaron Cameron

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