/*
* Copyright (c) 2009 Piotr Piastucki
*
* This file is part of Patchca CAPTCHA library.
*
* Patchca 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 3 of the License, or
* (at your option) any later version.
*
* Patchca 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 Patchca. If not, see <http://www.gnu.org/licenses/>.
*/
package com.xiongyingqi.captcha.filter.library;
public class DoubleRippleImageOp extends RippleImageOp {
@Override
protected void transform(int x, int y, double[] t) {
double tx = Math.sin((double) y / yWavelength + yRandom) + 1.3 * Math.sin((double) 0.6 * y / yWavelength + yRandom);
double ty = Math.cos((double) x / xWavelength + xRandom) + 1.3 * Math.cos((double) 0.6 * x / xWavelength + xRandom);
t[0] = x + xAmplitude * tx;
t[1] = y + yAmplitude * ty;
}
}