/**
*
* Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
*
* 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, see <http://www.gnu.org/licenses/>.
*
**/
package lucee.runtime.img.interpolation;
public class Quadratic implements Interpolation
{
@Override
public double f(double x) {
if (x < 0.0)
x = -x;
if (x < 0.5)
return 0.75 - x * x;
if (x < 1.5) {
x -= 1.5;
return 0.5 * x * x;
}
return 0.0;
}
@Override
public double getSupport() {
return 1.5;
}
}