src/org/math/plot/plots/CloudPlot2D.java

/*
 * Created on 13 juil. 07 by richet
 */
package org.math.plot.plots;

import java.awt.Color;

import javax.swing.JFrame;

import org.math.plot.FrameView;
import org.math.plot.Plot2DPanel;
import org.math.plot.PlotPanel;
import org.math.plot.render.AbstractDrawer;

public class CloudPlot2D extends Plot {

        double[][] NW;

        double[][] NE;

        double[][] SW;

        double[][] SE;

        double[] width_constant = { -1, -1 };

        double[][] XY;

        float[] f;

        boolean fill_shape = true;

        public CloudPlot2D(String n, Color c, double[][] _XYcard, double wX, double wY) {
                super(n, c);
                splitXYf(_XYcard);
                width_constant = new double[] { wX, wY };

                build();
        }

        private void splitXYf(double[][] xycard) {
                XY = new double[xycard.length][2];
                f = new float[xycard.length];
                float normf = 0;
                for (int i = 0; i < xycard.length; i++) {
                        XY[i][0] = xycard[i][0];
                        XY[i][1] = xycard[i][1];
                        f[i] = (float) xycard[i][2];
                        normf += f[i];//Math.max(normf, f[i]);
                }

                for (int i = 0; i < f.length; i++) {
                        f[i] = f[i] / normf;
                }

        }

        private void build() {
                if (width_constant[0] > 0) {
                        NW = new double[XY.length][];
                        NE = new double[XY.length][];
                        SW = new double[XY.length][];
                        SE = new double[XY.length][];
                        for (int i = 0; i < XY.length; i++) {
                                NW[i] = new double[] { XY[i][0] - width_constant[0] / 2, XY[i][1] + width_constant[1] / 2 };
                                NE[i] = new double[] { XY[i][0] + width_constant[0] / 2, XY[i][1] + width_constant[1] / 2 };
                                SW[i] = new double[] { XY[i][0] - width_constant[0] / 2, XY[i][1] - width_constant[1] / 2 };
                                SE[i] = new double[] { XY[i][0] + width_constant[0] / 2, XY[i][1] - width_constant[1] / 2 };
                        }
                }
        }

        public void plot(AbstractDrawer draw, Color c) {
                if (!visible)
                        return;

                draw.canvas.includeInBounds(SW[0]);
                draw.canvas.includeInBounds(NE[XY.length - 1]);

                draw.setColor(c);
                draw.setLineType(AbstractDrawer.CONTINOUS_LINE);
                for (int i = 0; i < XY.length; i++) {
                        if (f[i] > 0) {
                                draw.fillPolygon(f[i], NW[i], NE[i], SE[i], SW[i]);
                        }
                }
        }

        @Override
        public void setData(double[][] d) {
                splitXYf(d);
        }

        @Override
        public double[][] getData() {
                return XY;
        }

        public double[] isSelected(int[] screenCoordTest, AbstractDrawer draw) {
                for (int i = 0; i < XY.length; i++) {
                        int[] screenCoord = draw.project(XY[i]);

                        if ((screenCoord[0] + note_precision > screenCoordTest[0]) && (screenCoord[0] - note_precision < screenCoordTest[0])
                                        && (screenCoord[1] + note_precision > screenCoordTest[1]) && (screenCoord[1] - note_precision < screenCoordTest[1]))
                                return XY[i];
                }
                return null;
        }

        public static void main(String[] args) {
                Plot2DPanel p = new Plot2DPanel();

                double[][] cloud = new double[100][2];
                for (int i = 0; i < cloud.length; i++) {
                        cloud[i][0] = Math.random() + Math.random();
                        cloud[i][1] = Math.random() + Math.random();
                }
                p.addCloudPlot("cloud", Color.RED, cloud, 5, 5);

                double[][] cloud2 = new double[100][2];
                for (int i = 0; i < cloud2.length; i++) {
                        cloud2[i][0] = 2 + Math.random() + Math.random();
                        cloud2[i][1] = 2 + Math.random() + Math.random();
                }
                p.addCloudPlot("cloud2", Color.RED, cloud2, 5, 5);

                p.setLegendOrientation(PlotPanel.SOUTH);
                new FrameView(p).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        }

}

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