contourplotdemo2.java

Web图形化的Java库

/* ======================================
 * JFreeChart : a free Java chart library
 * ======================================
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * 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 2.1 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; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ---------------------
 * ContourPlotDemo2.java
 * ---------------------
 * (C) Copyright 2003, by David M. O'Donnell and Contributors.
 *
 * Original Author:  David M. O'Donnell;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: ContourPlotDemo2.java,v 1.12 2003/09/03 15:08:49 mungady Exp $
 *
 * Changes
 * -------
 * 22-Apr-2003 : Added standard header (DG);
 *
 */

package org.jfree.chart.demo;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.util.Date;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.ClipPath;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.annotations.XYTextAnnotation;
import org.jfree.chart.axis.ColorBar;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.LogarithmicAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.ContourPlot;
import org.jfree.data.ContourDataset;
import org.jfree.data.DefaultContourDataset;
import org.jfree.data.NonGridContourDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A demonstration application to illustrate ContourPlot.
 * Command line options exist to control different plot properties
 * such as colorbar orientation, etc.  List of options are available
 * by launching with the -? option, e.g., ContourPlotDemo -?
 *
 * @author DMO
 */
public class ContourPlotDemo2 extends ApplicationFrame {

    /** The x axis. */
    private ValueAxis xAxis = null;

    /** The y axis. */    
    private NumberAxis yAxis = null;
    
    /** The z axis. */
    private ColorBar zColorBar = null;

    /** A flag controlling the orientation of the z axis. */
    private static boolean zIsVertical = false;

    /** A flag indicating whether or not the x-values are dates. */
    private static boolean xIsDate = false;
    
    /** ??. */
    private static boolean asPoints = false;

    /** Logarithmic x-axis? */
    private static boolean xIsLog = false;
    
    /** Logarithmic y axis? */
    private static boolean yIsLog = false;
    
    /** Logarithmic z axis? */
    private static boolean zIsLog = false;

    /** Inverted x axis? */
    private static boolean xIsInverted = true;
    
    /** Inverted y axis? */
    private static boolean yIsInverted = false;
    
    /** Inverted z axis? */
    private static boolean zIsInverted = false;

    /** Annotate? */
    private static boolean annotate = false;

    /** Number of x intervals. */
    private static int numX = 10;
    
    /** Number of y intervals. */
    private static int numY = 20;

    /** The plot ratio. */
    private static double ratio = 0.0;

    /** Temp data storage. */
    private double[] tmpDoubleY = null;
    
    /** Temp data storage. */
    private double[] tmpDoubleX = null;
    
    /** Temp data storage. */
    private double[] tmpDoubleZ = null;

    /** X outline. */
    private double[] xOutline = null;

    /** Y outline. */
    private double[] yOutline = null;

    /** Draw the outline? */
    static boolean drawOutline = false;
    
    /** Fill the outline? */
    static boolean fillOutline = false;
    
    /** ??. */
    static int power = 4;

    /**
     * Constructs a new demonstration application.
     *
     * @param title  the frame title.
     */
    public ContourPlotDemo2(String title) {

        super(title);

        JFreeChart chart = createContourPlot();
        ChartPanel panel = new ChartPanel(chart, true, true, true, true, true);
        panel.setPreferredSize(new java.awt.Dimension(1000, 800));
        panel.setMaximumDrawHeight(100000); //stop chartpanel from scaling
        panel.setMaximumDrawWidth(100000); //stop chartpanel from scaling
        panel.setHorizontalZoom(true);
        panel.setVerticalZoom(true);
        panel.setFillZoomRectangle(true);
        setContentPane(panel);

    }

    /**
     * Creates a ContourPlot chart.
     *
     * @return the ContourPlot chart.
     */
    private JFreeChart createContourPlot() {

        String title = "Contour Plot";
        String xAxisLabel = "X Values";
        String yAxisLabel = "Y Values";
        String zAxisLabel = "Color Values";

        if (xIsDate) {
            xAxis = new DateAxis(xAxisLabel);
            xIsLog = false; // force axis to be linear when displaying dates
        }
        else {
            if (xIsLog) {
                xAxis = new LogarithmicAxis(xAxisLabel);
            }
            else {
                xAxis = new NumberAxis(xAxisLabel);
            }
        }

        if (yIsLog) {
            yAxis = new LogarithmicAxis(yAxisLabel);
        }
        else {
            yAxis = new NumberAxis(yAxisLabel);
        }

        if (zIsLog) {
            zColorBar = new ColorBar(zAxisLabel);
        }
        else {
            zColorBar = new ColorBar(zAxisLabel);
        }

        if (xAxis instanceof NumberAxis) {
            ((NumberAxis) xAxis).setAutoRangeIncludesZero(false);
            ((NumberAxis) xAxis).setInverted(xIsInverted);
        }

        yAxis.setAutoRangeIncludesZero(false);

        yAxis.setInverted(yIsInverted);

        if (!xIsDate) {
            ((NumberAxis) xAxis).setLowerMargin(0.0);
            ((NumberAxis) xAxis).setUpperMargin(0.0);