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Java Swing中的冲突

java swing interface

Java Swing中的冲突,java,swing,interface,Java,Swing,Interface,最近，我一直在编写一个2D沙盒，其中填充了几个运动中的形状，特别是圆。每个圆的速度和大小可以由窗口顶部和底部的两个J滑块控制 动画类 import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import java.awt.*; public class Animation extends JFrame { public final int HEIGHT = 500; publ

最近，我一直在编写一个2D沙盒，其中填充了几个运动中的形状，特别是圆。每个圆的速度和大小可以由窗口顶部和底部的两个J滑块控制

动画类

import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;

public class Animation extends JFrame {

    public final int HEIGHT = 500;
    public final int WIDTH = 735;
    public int speed = 10, size = 50;
    JSlider sl1, sl2;
    JPanel panel, panel2;
    JLabel label, label2;
    GraphicsDemo gD;

    public Animation() {
        this.setSize(WIDTH+35,HEIGHT+90);
        this.getContentPane();
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        panel = new JPanel(); panel2 = new JPanel();
        panel.setLayout(new FlowLayout());
        panel2.setLayout(new FlowLayout());
        label = new JLabel("Current Speed: 10");
        label2 = new JLabel("Current Size: 50");

        Dimension length = label.getPreferredSize();
        label.setBounds(150, 200, length.width, length.height);
        setSlider();
        Animation.event e1 = new Animation.event();
        Animation.event e2 = new Animation.event();
        sl1.addChangeListener(e1);
        sl2.addChangeListener(e2);


        panel.add(sl1); panel2.add(sl2);
        panel.add(label); panel2.add(label2);
        gD = new GraphicsDemo(HEIGHT, WIDTH, speed, size, sl1, sl2);
        this.add(gD);

        this.add(panel, BorderLayout.NORTH);
        this.add(panel2, BorderLayout.SOUTH);
        this.setVisible(true);

    }

    public void setSlider() {
        sl1 = new JSlider(JSlider.HORIZONTAL, 0, 20, speed);
        sl1.setMajorTickSpacing(5);
        sl1.setPaintTicks(true);

        sl2 = new JSlider(JSlider.HORIZONTAL, 20, 100, size);
        sl2.setMajorTickSpacing(5);
        sl2.setPaintTicks(true);
    }

    public class event implements ChangeListener {

        @Override
        public void stateChanged(ChangeEvent e) {
            speed = sl1.getValue();
            label.setText("Current speed: " + speed);

            size = sl2.getValue();
            label2.setText("Current size: " + size);
        }
    }
}

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.util.ArrayList;

public class GraphicsDemo extends JPanel implements ActionListener {

    public ArrayList<Balls> balls = new ArrayList<>();
    Image spaceImage;
    JSlider sl, sl2;
    Timer timer;
    public int h, w, s, size;
    public GraphicsDemo(int WIDTH, int HEIGHT, int SPEED,
                        int SIZE, JSlider slide, JSlider slide2) {
        h = HEIGHT; w = WIDTH;
        sl = slide; sl2 = slide2;
        s = SPEED; size = SIZE;
        init();
        spaceImage = new ImageIcon("C:\\Users\\admin\\Downloads\\space.jpg").getImage();
        timer = new Timer(100, this);
        timer.start();
    }

    public void init() {
        for (int i = 0; i < 10; i++) {
            int x = (int) ((Math.random()*700)+1);
            int y = (int) ((Math.random()*400)+1);
            if (i % 2 == 0) {
                balls.add(new Balls(size, x, y, 10, -10));
            } else {
                balls.add(new Balls(size, x, y, -10, 10));
            }
        }
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        this.setBackground(Color.BLACK);

        Graphics2D g2D = (Graphics2D) g;

        g2D.drawImage(spaceImage, 0,0, 735, 490, null);

        GradientPaint paint = new GradientPaint(0,0,Color.RED, 420,0,Color.BLUE);
        g2D.setPaint(paint);
        for (Balls ball : balls) {
            ball.render(g2D);
        }
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        for (Balls ball : balls) {
            ball.checkBounds();
            ball.changeVel(sl);
            ball.changeSize(sl2);
            for(Balls b : balls) {
          //      ball.collision(b);
            }
        }
        repaint();
    }

    static class Balls {
        Shape oval;
        private int radius;
        private int cx;
        private int cy;
        private int velX, velY;


        Balls(int r, int x, int y, int velX, int velY) {
            this.radius = r;
            this.cx = x;
            this.cy = y;
            this.velX = velX;
            this.velY = velY;
            oval = new Ellipse2D.Double(cx, cy, radius, radius);
        }

        void checkBounds() {
            cx += velX;
            cy += velY;
            if (cx >= 735-radius || cx <= 0) {
                velX *= -1;
            }
            if (cy  >= 490-radius || cy  <= 0) {
                velY *= -1;
            }
        }

        public void collision(Balls o) {
            Area areaA = new Area(oval);
            areaA.intersect(new Area(o.oval));
            if (!areaA.isEmpty()) {
                velX *= -1;
            }
        }

        void changeVel(JSlider sl) {
            if (velX < 0) {
                velX = -sl.getValue();
            } else {
                velX = sl.getValue();
            }
            if(velY < 0) {
               velY = -sl.getValue();
            } else {
                velY = sl.getValue();
            }
        }

        void changeSize(JSlider sl) {
            radius = sl.getValue();
        }

        void render(Graphics2D g) {
            oval = new Ellipse2D.Double(cx, cy, radius, radius);
            g.fill(oval);
        }
    }
} 

import java.awt.geom.Area;
import java.util.ArrayList;

public class Collisions {

    public boolean collision(ArrayList<GraphicsDemo.Balls> balls, Shape o1) {
        Area areaA = new Area(o1);
        for (GraphicsDemo.Balls ball : balls) {
            areaA.intersect(new Area(ball.oval));
            return !areaA.isEmpty();
        }
        return true;
    }
}
GraphicsDemo类

import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;

public class Animation extends JFrame {

    public final int HEIGHT = 500;
    public final int WIDTH = 735;
    public int speed = 10, size = 50;
    JSlider sl1, sl2;
    JPanel panel, panel2;
    JLabel label, label2;
    GraphicsDemo gD;

    public Animation() {
        this.setSize(WIDTH+35,HEIGHT+90);
        this.getContentPane();
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        panel = new JPanel(); panel2 = new JPanel();
        panel.setLayout(new FlowLayout());
        panel2.setLayout(new FlowLayout());
        label = new JLabel("Current Speed: 10");
        label2 = new JLabel("Current Size: 50");

        Dimension length = label.getPreferredSize();
        label.setBounds(150, 200, length.width, length.height);
        setSlider();
        Animation.event e1 = new Animation.event();
        Animation.event e2 = new Animation.event();
        sl1.addChangeListener(e1);
        sl2.addChangeListener(e2);


        panel.add(sl1); panel2.add(sl2);
        panel.add(label); panel2.add(label2);
        gD = new GraphicsDemo(HEIGHT, WIDTH, speed, size, sl1, sl2);
        this.add(gD);

        this.add(panel, BorderLayout.NORTH);
        this.add(panel2, BorderLayout.SOUTH);
        this.setVisible(true);

    }

    public void setSlider() {
        sl1 = new JSlider(JSlider.HORIZONTAL, 0, 20, speed);
        sl1.setMajorTickSpacing(5);
        sl1.setPaintTicks(true);

        sl2 = new JSlider(JSlider.HORIZONTAL, 20, 100, size);
        sl2.setMajorTickSpacing(5);
        sl2.setPaintTicks(true);
    }

    public class event implements ChangeListener {

        @Override
        public void stateChanged(ChangeEvent e) {
            speed = sl1.getValue();
            label.setText("Current speed: " + speed);

            size = sl2.getValue();
            label2.setText("Current size: " + size);
        }
    }
}

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.util.ArrayList;

public class GraphicsDemo extends JPanel implements ActionListener {

    public ArrayList<Balls> balls = new ArrayList<>();
    Image spaceImage;
    JSlider sl, sl2;
    Timer timer;
    public int h, w, s, size;
    public GraphicsDemo(int WIDTH, int HEIGHT, int SPEED,
                        int SIZE, JSlider slide, JSlider slide2) {
        h = HEIGHT; w = WIDTH;
        sl = slide; sl2 = slide2;
        s = SPEED; size = SIZE;
        init();
        spaceImage = new ImageIcon("C:\\Users\\admin\\Downloads\\space.jpg").getImage();
        timer = new Timer(100, this);
        timer.start();
    }

    public void init() {
        for (int i = 0; i < 10; i++) {
            int x = (int) ((Math.random()*700)+1);
            int y = (int) ((Math.random()*400)+1);
            if (i % 2 == 0) {
                balls.add(new Balls(size, x, y, 10, -10));
            } else {
                balls.add(new Balls(size, x, y, -10, 10));
            }
        }
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        this.setBackground(Color.BLACK);

        Graphics2D g2D = (Graphics2D) g;

        g2D.drawImage(spaceImage, 0,0, 735, 490, null);

        GradientPaint paint = new GradientPaint(0,0,Color.RED, 420,0,Color.BLUE);
        g2D.setPaint(paint);
        for (Balls ball : balls) {
            ball.render(g2D);
        }
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        for (Balls ball : balls) {
            ball.checkBounds();
            ball.changeVel(sl);
            ball.changeSize(sl2);
            for(Balls b : balls) {
          //      ball.collision(b);
            }
        }
        repaint();
    }

    static class Balls {
        Shape oval;
        private int radius;
        private int cx;
        private int cy;
        private int velX, velY;


        Balls(int r, int x, int y, int velX, int velY) {
            this.radius = r;
            this.cx = x;
            this.cy = y;
            this.velX = velX;
            this.velY = velY;
            oval = new Ellipse2D.Double(cx, cy, radius, radius);
        }

        void checkBounds() {
            cx += velX;
            cy += velY;
            if (cx >= 735-radius || cx <= 0) {
                velX *= -1;
            }
            if (cy  >= 490-radius || cy  <= 0) {
                velY *= -1;
            }
        }

        public void collision(Balls o) {
            Area areaA = new Area(oval);
            areaA.intersect(new Area(o.oval));
            if (!areaA.isEmpty()) {
                velX *= -1;
            }
        }

        void changeVel(JSlider sl) {
            if (velX < 0) {
                velX = -sl.getValue();
            } else {
                velX = sl.getValue();
            }
            if(velY < 0) {
               velY = -sl.getValue();
            } else {
                velY = sl.getValue();
            }
        }

        void changeSize(JSlider sl) {
            radius = sl.getValue();
        }

        void render(Graphics2D g) {
            oval = new Ellipse2D.Double(cx, cy, radius, radius);
            g.fill(oval);
        }
    }
} 

import java.awt.geom.Area;
import java.util.ArrayList;

public class Collisions {

    public boolean collision(ArrayList<GraphicsDemo.Balls> balls, Shape o1) {
        Area areaA = new Area(o1);
        for (GraphicsDemo.Balls ball : balls) {
            areaA.intersect(new Area(ball.oval));
            return !areaA.isEmpty();
        }
        return true;
    }
}

import java.awt.*；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入java.awt.geom.Area；
导入java.awt.geom.Ellipse2D；
导入java.util.ArrayList；
公共类GraphicsDemo扩展JPanel实现ActionListener{
public ArrayList balls=new ArrayList（）；
图像空间图像；
JSlider sl，sl2；
定时器；
公共int h、w、s、尺寸；
公共图形DEMO（整数宽度、整数高度、整数速度、，
整数大小，JSlider幻灯片，JSlider幻灯片2）{
h=高度；w=宽度；
sl=幻灯片；sl2=幻灯片2；
s=速度；尺寸=尺寸；
init（）；
spaceImage=new-ImageIcon（“C:\\Users\\admin\\Downloads\\space.jpg”）.getImage（）；
定时器=新定时器（100，本）；
timer.start（）；
}
公共void init（）{
对于（int i=0；i<10；i++）{
intx=（int）（（Math.random（）*700）+1）；
int y=（int）（（Math.random（）*400）+1）；
如果（i%2==0）{
添加（新球（尺寸，x，y，10，-10））；
}否则{
添加（新球（尺寸，x，y，-10，10））；
}
}
}
公共组件（图形g）{
超级组件（g）；
这个.背景（颜色.黑色）；
Graphics2D g2D=（Graphics2D）g；
g2D.drawImage（spaceImage，0,0735490，空）；
GradientPaint=新的GradientPaint（0,0，Color.RED，420,0，Color.BLUE）；
g2D.setPaint（油漆）；
用于（球：球）{
球体渲染（g2D）；
}
}
@凌驾
已执行的公共无效操作（操作事件e）{
用于（球：球）{
ball.checkBounds（）；
球型变速杆（sl）；
改变大小的球（sl2）；
用于（球b：球）{
//碰撞（b）；
}
}
重新油漆（）；
}
静态类球{
椭圆形；
私有整数半径；
私人int cx；
私密性；
私人int velX，velY；
球（整数r，整数x，整数y，整数velX，整数velY）{
这个半径=r；
这是cx=x；
这个.cy=y；
this.velX=velX；
这是一个很好的例子；
椭圆=新椭圆2d.Double（cx，cy，半径，半径）；
}
void checkBounds（）{
cx+=velX；
cy+=1；

如果（cx>=735 radius | | cx=490 radius | | cy碰撞类中存在错误：


import java.awt.geom.Area;
import java.util.ArrayList;

public class Collisions {

    public boolean collision(ArrayList<GraphicsDemo.Balls> balls, Shape o1) {
        Area areaA = new Area(o1);
        for (GraphicsDemo.Balls ball : balls) {
            areaA.intersect(new Area(ball.oval));
            return !areaA.isEmpty();  // HERE
        }
        return true;
    }
}



导入java.awt.geom.Area；
导入java.util.ArrayList；
公共类冲突{
公共布尔碰撞（ArrayList球，形状o1）{
面积A=新面积（o1）；
用于（GraphicsDemo.Balls球：球）{
区域A.相交（新区域（球形、椭圆形））；
return！areaA.isEmpty（）；//此处
}
返回true；
}
}



您的循环在第一步返回一个没有任何断言的值！
首先，不要从中更新组件的状态，在
paintComponent
方法中，您正在为自己设置一个高CPU负载，因为这可能会触发新的绘制过程。不要将滑块传递给球，这会暴露实现细节和风险严格修改组件，最好直接设置滑块的值