通过java画一个大风车.doc

今天的作业我做的是画一个风车:运行结果:1首先:写个Point类:（作用作为风车的中点）package com.huang.exam;/* * * author 黄燕斌 * version 1.0 * since 2013-05-28 * */public class Point private double x;private double y;/* * 构造器 */public Point()/* * 构造器 * param x * param y */public Point(double x,double y)this.x = x;this.y = y;/* * return X */public double getX() return x;/* * * param x X */public void setX(int x) this.x = x;/* * * return Y */public double getY() return y;/* * * param y Y */public void setY(int y) this.y = y;2.写一个风车Windmill类package com.huang.exam;import java.awt.Color;import java.awt.Graphics;/* * 风车 * author 黄 * version 1.0 * since 2013-05-28 * */public class Windmill private Point center;private int radius;private Color color;public Windmill()/* * 构造器 * param center * param radius * param color */public Windmill(Point center, int radius,Color color)this.radius = radius;this.center = center;this.color = color;public Color getColor() return color;public void setColor(Color color) this.color = color;public Point getCenter() return center;public void setCenter(Point center) this.center = center;public int getRadius() return radius;public void setRadius(int radius) this.radius = radius;/* * 画风车 * param g */public void draw(Graphics g)/*通过计算出风车10点的位置*/int arrayX = new int10;int arrayY = new int10;Pointp1 = newPoint(center.getX(),center.getY()+ radius);Point p3 = new Point(center.getX()+Math.cos(18*Math.PI/180)*radius,center.getY()+Math.sin(18*Math.PI/180)*radius);Point p5 = new Point(center.getX()+Math.cos(54*Math.PI/180)*radius,center.getY()-Math.sin(54*Math.PI/180)*radius);Point p7 = new Point(center.getX()-Math.cos(54*Math.PI/180)*radius,center.getY()-Math.sin(54*Math.PI/180)*radius);Point p9 = new Point(center.getX()-Math.cos(18*Math.PI/180)*radius,center.getY()+Math.sin(18*Math.PI/180)*radius);double T = 0.3819;Point p2= new Point(center.getX(),center.getY()-T*radius);Point p4 = new Point(center.getX()-Math.cos(18*Math.PI/180)*T*radius,center.getY()-Math.sin(18*Math.PI/180)*T*radius);Point p6 = new Point(center.getX()-Math.cos(54*Math.PI/180)*T*radius,center.getY()+Math.sin(54*Math.PI/180)*T*radius);Point p8 = new Point(center.getX()+Math.cos(54*Math.PI/180)*T*radius,center.getY()+Math.sin(54*Math.PI/180)*T*radius);Point p10 = new Point(center.getX()+Math.cos(18*Math.PI/180)*T*radius,center.getY()-Math.sin(18*Math.PI/180)*T*radius);arrayX0 = (int)p1.getX();arrayY0 = (int)p1.getY();arrayX1 = (int)p2.getX();arrayY1 = (int)p2.getY();arrayX2 = (int)p3.getX();arrayY2 = (int)p3.getY();arrayX3 = (int)p4.getX();arrayY3 = (int)p4.getY();arrayX4 = (int)p5.getX();arrayY4 = (int)p5.getY();arrayX5 = (int)p6.getX();arrayY5 = (int)p6.getY();arrayX6 = (int)p7.getX();arrayY6 = (int)p7.getY();arrayX7 = (int)p8.getX();arrayY7 = (int)p8.getY();arrayX8 = (int)p9.getX();arrayY8 = (int)p9.getY();arrayX9 = (int)p10.getX();arrayY9 = (int)p10.getY();g.setColor(color);g.drawPolygon(arrayX, arrayY, 10);3. 写一个 CompantPanel 继承JPanel package com.huang.exam;import java.awt.Color;import java.awt.Graphics;import javax.swing.JPanel;public class CompantPanel extends JPanel public void paintComponent(Graphics g) Point p = new Point(250,200);Windmill fs = new Windmill(p,200,Color.blue);fs.draw(g); 4. main类package com.huang.exam;import javax.swing.JFrame;public class Main public static void main(String