java画出爱心

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import javax.swing.JFrame;

/**

 * 令x=cost，则y-x^(2/3)=sint

 * 所以：y=sint+(cost)^(2/3)

 * @author guoxinze

 *

 */

public class ShowLines extends JFrame{
double x[] = new double[360];
double y[] = new double[360];

int xx[] = new int[360];
int yy[] = new int[360];

int k = 0;
//得到各个点的坐标
public void setvalue(){
//360度为一个周期，设置数组中的纸
for(double t = 1;t<=360;t++){
//令x=cost，则y-x^(2/3)=sint
//所以：y=sint+(cost)^(2/3)
x[k] = Math.cos(Math.toRadians(t));
y[k] = -(Math.sin(Math.toRadians(t)) + Math.cbrt(Math.pow(Math.cos(Math.toRadians(t)), 2.0)));
//使x、y的坐标轴与图形对齐，看起来美观一点
xx[k] = (int)(x[k]*100+200);
yy[k] = (int)(y[k]*100+245);
k++;
}
}
public ShowLines(){
this.setTitle("画曲线"); 
this.setSize(600,600);
this.setLocation(500, 300);  
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);

}
@Override
public void paint(Graphics g) {
// TODO Auto-generated method stub
super.paint(g);
g.setColor(Color.black);
g.drawPolygon(xx, yy, 360);
g.setFont(new Font("Tahoma", Font.BOLD, 12));

g.drawLine(0,233,800,233);//画x轴和y轴
g.drawString("X", 550, 250);
g.drawString("Y", 190, 50);
g.drawLine(200,0,200,803);

}
public static void main(String[] args) {
ShowLines form2 = new ShowLines();
form2.setvalue();
form2.repaint();
}
}

采用十分简单的点来画出指定函数