001/* =========================================================== 002 * Orson Charts : a 3D chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C)opyright 2013-2022, by David Gilbert. All rights reserved. 006 * 007 * https://github.com/jfree/orson-charts 008 * 009 * This program is free software: you can redistribute it and/or modify 010 * it under the terms of the GNU General Public License as published by 011 * the Free Software Foundation, either version 3 of the License, or 012 * (at your option) any later version. 013 * 014 * This program is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU General Public License for more details. 018 * 019 * You should have received a copy of the GNU General Public License 020 * along with this program. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 023 * Other names may be trademarks of their respective owners.] 024 * 025 * If you do not wish to be bound by the terms of the GPL, an alternative 026 * commercial license can be purchased. For details, please see visit the 027 * Orson Charts home page: 028 * 029 * http://www.object-refinery.com/orsoncharts/index.html 030 * 031 */ 032 033package org.jfree.chart3d.data; 034 035/** 036 * A generic representation of a two dimensional grid of data values. 037 * 038 * @param <T> the type of value stored in the grid. 039 */ 040public interface Values2D<T> { 041 042 /** 043 * Returns the number of rows in the grid. 044 * 045 * @return The number of rows in the grid. 046 */ 047 int getRowCount(); 048 049 /** 050 * Returns the number of columns in the grid. 051 * 052 * @return The number of columns in the grid. 053 */ 054 int getColumnCount(); 055 056 /** 057 * Returns the data item at the specified position. 058 * 059 * @param rowIndex the row index. 060 * @param columnIndex the column index. 061 * 062 * @return The data value (possibly {@code null}). 063 */ 064 T getValue(int rowIndex, int columnIndex); 065 066 /** 067 * Returns the data value at the specified position as a double primitive, 068 * or {@code Double.NaN} if the value is not an instance of 069 * {@code Number}. Where the {@link #getValue(int, int)} method 070 * returns {@code null}, this method returns {@code Double.NaN}. 071 * 072 * @param rowIndex the row index. 073 * @param columnIndex the column index. 074 * 075 * @return The data value. 076 */ 077 double getDoubleValue(int rowIndex, int columnIndex); 078 079}