Fawkes API
Fawkes Development Version
linear.cpp
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/***************************************************************************
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* linear.cpp - Linear interpolator
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*
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* Created: Tue Nov 18 11:13:13 2008
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* Copyright 2008 Tim Niemueller [www.niemueller.de]
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* 2008 Graeme McPhillips
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*
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****************************************************************************/
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/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. A runtime exception applies to
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* this software (see LICENSE.GPL_WRE file mentioned below for details).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* Read the full text in the LICENSE.GPL_WRE file in the doc directory.
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*/
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#include <utils/math/interpolation/linear.h>
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namespace
fawkes
{
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#if 0
/* just to make Emacs auto-indent happy */
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}
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#endif
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/** @class LinearInterpolator <utils/math/interpolation/linear.h>
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* Linear value interpolator.
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* The interpolator creates intermediate points given a starting and and
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* end point and time constraints. Times are supplied in a discrete unit like
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* miliseconds or microseconds.
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* The values are interpolated on a straight line between the starting and the
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* end point.
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*
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* The calculation is executed with the following equation:
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* \f[
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* \frac{t_\mathrm{current}}{t_\mathrm{end}} \cdot (v_\mathrm{end} - v_\mathrm{start}) + v_\mathrm{start}
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* \f]
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*
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* @author Tim Niemueller
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* @author Graeme McPhillips
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* @author Stephen Marais
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*/
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float
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LinearInterpolator::interpolate
(
float
t_current,
float
t_end,
float
t_step,
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float
v_start,
float
v_end)
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{
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return
(t_current / t_end) * (v_end - v_start) + v_start;
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}
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}
// end namespace fawkes
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fawkes
Fawkes library namespace.
fawkes::LinearInterpolator::interpolate
virtual float interpolate(float t_current, float t_end, float t_step, float v_start, float v_end)
Interpolate a point at a specific time.
Definition:
linear.cpp:51
src
libs
utils
math
interpolation
linear.cpp
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