java - 在 Java 7 中绘制 vector 图

Question

我正在尝试在 Swing/JPanel 中创建一些代码，这些代码采用一些(可变的)变量并绘制如下图形:

我不知道从哪里开始。这个想法是在六边形上有关键点，每个变量一个，每个点之间画一条线，然后自定义形状内的空间将被遮蔽。有什么想法吗？

代码原型(prototype)

import java.awt.*;
import javax.swing.*;

public class DrawPolygon extends JPanel {

int xOffset = 0;
int yOffset = 0;
int sizeModifer = 50;
int numOfPoints = 8;
int linePosition = 80;
double sizeMultiplier = 1;

@Override
public void paintComponent(Graphics g) {
    super.paintComponent(g);

    Polygon[] polygons = new Polygon[5];
    for (int i = 0; i < polygons.length; i++){
        polygons[i] = new Polygon();
        for (int q = 0; q < numOfPoints; q++) {
            polygons[i].addPoint(
                xOffset + (int) (linePosition + (sizeModifer*sizeMultiplier)
                * Math.cos(q * 2 * Math.PI / numOfPoints)),
                yOffset + (int) ((linePosition - 10) + (sizeModifer*sizeMultiplier)
                * Math.sin(q * 2 * Math.PI / numOfPoints)));
        }//built points
        sizeMultiplier = sizeMultiplier - 0.2;
    }//build polygon arrays

    Polygon innerPolygon = new Polygon();
    for (int i = 0; i < numOfPoints; i++) {
        int randomRange = 5 + (int) (Math.random() * ((sizeModifer - 5) + 1));
        innerPolygon.addPoint(
            xOffset + (int) (linePosition + randomRange
            * Math.cos(i * 2 * Math.PI / numOfPoints)),
            yOffset + (int) ((linePosition - 10) + randomRange
            * Math.sin(i * 2 * Math.PI / numOfPoints)));
    }
    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(
        RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setStroke(new BasicStroke(1));

    for (int i = 0; i < polygons.length; i++){
        g2d.setColor(Color.green);
        g2d.fill(polygons[i]);
        g2d.setColor(Color.black);
        g2d.draw(polygons[i]);
    }//draw polygons from arrays

    double distanceModifier = 1;
    for (int i = 0; i < numOfPoints; i++) {
        g2d.drawString("test"+(i+1),
            xOffset + (int) (linePosition + (sizeModifer*distanceModifier)
            * Math.cos(i * 2 * Math.PI / numOfPoints)),
            yOffset + (int) ((linePosition - 10) + (sizeModifer*distanceModifier)
            * Math.sin(i * 2 * Math.PI / numOfPoints)));
        distanceModifier = distanceModifier +.01;
    }

    g2d.setColor(new Color(255,213,200,90));
    g2d.fill(innerPolygon);
    g2d.setColor(Color.red);
    g2d.draw(innerPolygon);
}

@Override
public Dimension getPreferredSize() {
    // TODO calculate size based on geometry
    return new Dimension(160, 160);
}

public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
        @Override
        public void run() {
            JFrame frame = new JFrame();
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setTitle("Show Different Polygons");
            frame.add(new DrawPolygon());
            frame.pack();
            frame.setLocationByPlatform(true);
            frame.setVisible(true);
        }
    });
}

Answer 1

JFreeChart包括 SpiderWebPlot ，如图所示 demo在杂项下讨论here .虽然 SpiderWebChartDemo1 包含五个类别，但您的图像似乎包含六个。