javafx绘制彩色不相交的圆圈,个数从键盘上输入,半径在10-20之间,色彩随机

以下是一个实现示例：

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.Scanner;

public class Main extends Application {

    private static final int MIN_RADIUS = 10;
    private static final int MAX_RADIUS = 20;

    private int circleCount;
    private List<Circle> circles;

    @Override
    public void start(Stage primaryStage) throws Exception {
        // 从键盘上输入圆圈的个数
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入圆圈个数：");
        circleCount = scanner.nextInt();

        // 创建圆圈
        circles = new ArrayList<>();
        Random random = new Random();
        for (int i = 0; i < circleCount; i++) {
            double radius = MIN_RADIUS + random.nextDouble() * (MAX_RADIUS - MIN_RADIUS);
            Color color = Color.rgb(random.nextInt(256), random.nextInt(256), random.nextInt(256));
            Circle circle = new Circle(radius, color);
            circles.add(circle);
        }

        // 布局圆圈
        boolean intersect;
        do {
            intersect = false;
            for (int i = 0; i < circleCount; i++) {
                Circle circle1 = circles.get(i);
                circle1.setCenterX(MIN_RADIUS + random.nextDouble() * (600 - 2 * MAX_RADIUS));
                circle1.setCenterY(MIN_RADIUS + random.nextDouble() * (400 - 2 * MAX_RADIUS));
                for (int j = i + 1; j < circleCount; j++) {
                    Circle circle2 = circles.get(j);
                    if (circle1.intersects(circle2.getBoundsInLocal())) {
                        intersect = true;
                        break;
                    }
                }
                if (intersect) {
                    break;
                }
            }
        } while (intersect);

        // 添加圆圈到面板
        Pane root = new Pane();
        root.getChildren().addAll(circles);

        // 显示窗口
        primaryStage.setScene(new Scene(root, 600, 400));
        primaryStage.show();
    }

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

该示例中，首先从键盘上输入圆圈的个数，然后创建圆圈，并随机生成半径和色彩。接着，使用一个循环来布局圆圈，每次随机生成圆心坐标，并检查当前圆圈是否与其他圆圈相交。如果有相交，则需要重新生成圆心坐标，直到所有圆圈都不相交为止。最后，将所有圆圈添加到面板中，并显示窗口。