/*
* This file is part of JGrasstools (http://www.jgrasstools.org)
* (C) HydroloGIS - www.hydrologis.com
*
* JGrasstools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jgrasstools.gears.utils;
/**
* A point that can checked by comparison.
*
* @author Andrea Antonello (www.hydrologis.com)
*/
public class CheckPoint implements Comparable<CheckPoint> {
public int col;
public int row;
public int index;
public CheckPoint( int col, int row, int index ) {
this.col = col;
this.row = row;
this.index = index;
}
public int compareTo( CheckPoint o ) {
/*
* if row and col are equal, return 0, which will
* anyways trigger and exception
*/
if (col == o.col && row == o.row) {
return 0;
}
/*
* in the case of non equal row/col, we need to make the normal sort
*/
if (index < o.index) {
return -1;
} else if (index > o.index) {
return 1;
} else {
return 0;
}
}
}