/*
* __ .__ .__ ._____.
* _/ |_ _______ __|__| ____ | | |__\_ |__ ______
* \ __\/ _ \ \/ / |/ ___\| | | || __ \ / ___/
* | | ( <_> > <| \ \___| |_| || \_\ \\___ \
* |__| \____/__/\_ \__|\___ >____/__||___ /____ >
* \/ \/ \/ \/
*
* Copyright (c) 2006-2011 Karsten Schmidt
*
* 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.
*
* http://creativecommons.org/licenses/LGPL/2.1/
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
package spimedb.util.math;
/**
* Delivers a number of decimated/stepped values for a given interval. E.g. by
* using 5 steps the interpolation factor is decimated to: 0, 20, 40, 60, 80 and
* 100%. By default {@link LinearInterpolation} is used, however any other
* {@link InterpolateStrategy} can be specified via the constructor.
*/
public class DecimatedInterpolation implements InterpolateStrategy {
public int numSteps;
public InterpolateStrategy strategy;
public DecimatedInterpolation(int steps) {
this(steps, new LinearInterpolation());
}
public DecimatedInterpolation(int steps, InterpolateStrategy strategy) {
this.numSteps = steps;
this.strategy = strategy;
}
public double interpolate(double a, double b, double f) {
double fd = (int) (f * numSteps) / (double) numSteps;
return strategy.interpolate(a, b, fd);
}
public float interpolate(float a, float b, float f) {
float fd = (int) (f * numSteps) / (float) numSteps;
return strategy.interpolate(a, b, fd);
}
}