Here you can find the source of setBitSet(BitSet bitSet, int x1, int x2, int y, int width)
private static void setBitSet(BitSet bitSet, int x1, int x2, int y, int width)
//package com.java2s; /*/*from ww w. j a va 2 s . c o m*/ * Copyright (C) 2010-2015 JPEXS, 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 3.0 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. */ import java.util.BitSet; public class Main { private static void setBitSet(BitSet bitSet, int x1, int x2, int y, int width) { int idx = width * y + x1; int idx2 = width * y + x2; for (; idx < idx2; idx++) { bitSet.set(idx); } } }