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/*
* splinee_data.h -- ePiX parametric spline functions
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.1.4
* Last Change: June 18, 2007
*
*
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
* Andrew D. Hwang <ahwang -at- holycross -dot- edu>
* Department of Mathematics and Computer Science
* College of the Holy Cross
* Worcester, MA, 01610-2395, USA
*
*
* ePiX 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.
*
* ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef EPIX_SPLINE_DATA
#define EPIX_SPLINE_DATA
namespace ePiX {
template <typename T>
T spl_pt(const T& p1, const T& p2, const T& p3, double t)
{
return (1-t)*(1-t)*p1 + 2*t*(1-t)*p2 + t*t*p3;
}
template <typename T>
T spl_pt(const T& p1, const T& p2, const T& p3, const T& p4, double t)
{
const double s(1-t);
return s*s*(s*p1 + 3*t*p2) + t*t*(3*s*p3 + t*p4);
}
} // end of namespace
#endif /* EPIX_SPLINE_DATA */
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