eclipse烟花代码

### 关于Eclipse烟花效果代码

在探讨如何实现在Eclipse环境中创建烟花效果之前，值得注意的是通常这类视觉特效更多是在专门的图形库或是Web开发环境里实现。然而，在Eclipse中可以通过嵌入JavaFX或SWT等GUI框架来达成这一目标。

下面提供了一个简单的基于JavaFX的例子，可以在Eclipse IDE内运行并展示烟花爆炸的效果：

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class FireworkEffect extends Application {

    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Scene scene = new Scene(root, 800, 600, Color.BLACK);

        createFirework(scene.getWidth() / 2, scene.getHeight(), root);
        
        Timeline timeline = new Timeline(new KeyFrame(Duration.millis(1), e -> {}));
        timeline.setCycleCount(Timeline.INDEFINITE);
        timeline.play();

        primaryStage.setTitle("Fireworks in Eclipse");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private static void createFirework(double startX, double startY, Group group){
        Circle fireworkCenter = new Circle(startX, startY, 5, Color.YELLOW);
        group.getChildren().add(fireworkCenter);

        for (int i=0; i<360; i+=10){ // Create particles around center point
            Particle particle = new Particle(fireworkCenter.getCenterX(),
                                             fireworkCenter.getCenterY());
            group.getChildren().add(particle.circle);
            
            particle.animate(i);    
        }
    }

    static class Particle{
        final Circle circle;
        final int speed = 5;

        Particle(double centerX, double centerY){
            this.circle = new Circle(centerX, centerY, 2, getRandomColor());
        }

        void animate(int angle){
            // Animate each particle moving away from the explosion site at different angles.
            Timeline timeline = new Timeline(
                new KeyFrame(Duration.seconds(.017),
                    event->circle.setTranslateX(circle.getTranslateX()+Math.cos(Math.toRadians(angle))*speed),
                    event->circle.setTranslateY(circle.getTranslateY()-Math.sin(Math.toRadians(angle))*speed))
            );
            timeline.setCycleCount(40 + Math.random()*20);
            timeline.play();
        }

        private static Color getRandomColor(){
            return Color.rgb((float)Math.random()*255,
                             (float)Math.random()*255,
                             (float)Math.random()*255,.8);
        }
    }

    public static void main(String[] args) { launch(args);}
}

这段程序利用了`javafx.animation`包下的类实现了动画效果，并通过随机颜色函数给每一个粒子赋予不同的色彩[^1]。为了使这个例子工作正常，确保已经配置好了JavaFX SDK并且项目属性设置正确以便能够访问到必要的库文件。