javafx - NHS Spinner

Forked (http://codepen.io/csswizardry/pen/PjPXrg by Harry Roberts)

import javafx.animation.Animation;
import javafx.animation.Interpolator;
import javafx.animation.RotateTransition;
import javafx.animation.SequentialTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyCodeCombination;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.stage.Stage;
import javafx.util.Duration;

public class Main extends Application {

 @Override
 public void start(Stage stage) throws Exception {
  int radius = 20;
  Color fill = Color.WHITE;
  
  Circle center = new Circle(150, 150, radius, fill);
  Circle c1 = new Circle(150 - radius*2, 150 - radius*2, radius, fill);
  Circle c2 = new Circle(150 + radius*2, 150 + radius*2, radius, fill);
  Circle c3 = new Circle(150 - radius*2, 150 + radius*2, radius, fill);
  
  Group root = new Group(center, c1, c2, c3);
  
  RotateTransition rt = new RotateTransition(Duration.seconds(1.5), root);
  rt.setInterpolator(Interpolator.EASE_BOTH);
  rt.setFromAngle(-360*5);
  rt.setToAngle(-50);
  
  rt.setCycleCount(Animation.INDEFINITE);
  rt.setAutoReverse(true);
  rt.play();
  
  stage.setScene(new Scene(root, 300, 300, Color.web("#272727")));
  stage.show();
  stage.getScene().getAccelerators().put(new KeyCodeCombination(KeyCode.ESCAPE), () -> System.exit(0));
 }

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

}

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