/*
* Copyright (C) 2015 johnlindsay
*
* This program 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 whitebox.structures;
/**
* This class is used to create a 2-D array of 32-bit integers.
* @author John Lindsay
*/
public class IntArray2D {
private int rows = 0;
private int columns = 0;
private int[] data;
private int numCells = 0;
private int noData = -32768;
/**
* Initializes a new IntArray2D with a specified number of rows, columns,
* and a user-specified NoData value.
* @param rows The number of rows.
* @param columns The number of columns.
* @param noData The user-specified NoData value.
*/
public IntArray2D(int rows, int columns, int noData) {
this.rows = rows;
this.columns = columns;
this.noData = noData;
numCells = rows * columns;
data = new int[numCells];
for (int i = 0; i < numCells; i++) {
data[i] = noData;
}
}
/**
* Initializes a new IntArray2D with a specified number of rows and columns.
* @param rows The number of rows.
* @param columns The number of columns.
*/
public IntArray2D(int rows, int columns) {
this.rows = rows;
this.columns = columns;
numCells = rows * columns;
data = new int[numCells];
for (int i = 0; i < numCells; i++) {
data[i] = noData;
}
}
public void incrementValue(int row, int column, int value) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return;
}
int cellNum = row * columns + column;
data[cellNum] += value;
}
public void incrementValue(int row, int column) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return;
}
int cellNum = row * columns + column;
data[cellNum]++;
}
public void decrementValue(int row, int column, int value) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return;
}
int cellNum = row * columns + column;
data[cellNum] -= value;
}
public void decrementValue(int row, int column) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return;
}
int cellNum = row * columns + column;
data[cellNum]--;
}
public void setValue(int row, int column, int value) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return;
}
int cellNum = row * columns + column;
data[cellNum] = value;
}
public int getValue(int row, int column) {
if (row < 0 || row >= rows || column < 0 || column >= columns) {
return noData;
}
int cellNum = row * columns + column;
return data[cellNum];
}
public int getNoDataValue() {
return noData;
}
public static void main(String[] arg) {
IntArray2D intArray = new IntArray2D(100, 100, -999);
intArray.setValue(5, 4, 4);
intArray.setValue(5, 4, 8);
intArray.setValue(5, 5, 12);
intArray.setValue(6, 76, 9);
intArray.setValue(-100, 76, 9);
System.out.println(intArray.getValue(5, 4));
System.out.println(intArray.getValue(5, 5));
System.out.println(intArray.getValue(6, 76));
System.out.println(intArray.getValue(-100, 76));
}
}