如何在Java中制作星形？

Question

我正在尝试用Java制作一些形状.我创建了两个有两种不同颜色的矩形,但我想创建一个星形,我找不到有用的来源来帮助我这样做.

这是我的代码:

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

public class shapes extends JPanel{

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

        GPHCS.setColor(Color.BLUE);
        GPHCS.fillRect(25,25,100,30);

        GPHCS.setColor(Color.GRAY);
        GPHCS.fillRect(25,65,100,30);

        GPHCS.setColor(new Color(190,81,215));
        GPHCS.drawString("This is my text", 25, 120);
    }
}

Answer 1

您可以尝试使用多边形和一些基本数学:

    int midX = 500;
    int midY = 340;
    int radius[] = {118,40,90,40};
    int nPoints = 16;
    int[] X = new int[nPoints];
    int[] Y = new int[nPoints];

    for (double current=0.0; current<nPoints; current++)
    {
        int i = (int) current;
        double x = Math.cos(current*((2*Math.PI)/max))*radius[i % 4];
        double y = Math.sin(current*((2*Math.PI)/max))*radius[i % 4];

        X[i] = (int) x+midX;
        Y[i] = (int) y+midY;
    }

    g.setColor(Color.WHITE);
    g.fillPolygon(X, Y, nPoints);