使用
FlowPane代替
StackPane并在
FanPane类内部声明Animation 。这是代码
public class FanWithControls extends Application { @Override // Override the start method in the Application class public void start(Stage primaryStage) { FanPane fan = new FanPane(); FlowPane spane = new FlowPane(); spane.getChildren().addAll(fan); HBox hBox = new HBox(5); Button btPause = new Button("Pause"); Button btResume = new Button("Resume"); Button btReverse = new Button("Reverse"); hBox.setAlignment(Pos.CENTER); hBox.getChildren().addAll(btPause, btResume, btReverse); Slider slider = new Slider(0, 10, 3); slider.setShowTickLabels(true); slider.setShowTickMarks(true); BorderPane pane = new BorderPane(); pane.setCenter(spane); pane.setTop(hBox); pane.setBottom(slider); // Create a scene and place it in the stage Scene scene = new Scene(pane, 300, 400); primaryStage.setTitle("FanWithControls"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage fan.setAnimation(fan); Timeline animation = fan.getAnimation(); scene.widthProperty().addListener(e -> fan.setW(fan.getWidth())); scene.heightProperty().addListener(e -> fan.setH(fan.getHeight())); btPause.setonAction((e) -> { for (Node fans : spane.getChildren()) { FanPane fanpane = (FanPane) fans; fanpane.getAnimation().pause(); }// animation.pause(); }); btResume.setonAction((e) -> { for (Node fans : spane.getChildren()) { FanPane fanpane = (FanPane) fans; fanpane.getAnimation().play(); }// animation.play(); }); btReverse.setonAction((e) -> { for (Node fans : spane.getChildren()) { FanPane fanpane = (FanPane) fans; fanpane.reverse(); }// fan.reverse(); }); slider.valueProperty().addListener((ov) -> {// animation.setRate(slider.getValue()); for (Node fans : spane.getChildren()) { FanPane fanpane = (FanPane) fans; fanpane.getAnimation().setRate(slider.getValue()); } if (spane.getChildren().size() < (int) slider.getValue()) { for (int i = spane.getChildren().size(); i < (int) slider.getValue(); i++) { FanPane fanPane = new FanPane(); spane.getChildren().add(fanPane); fanPane.setAnimation(fanPane); fanPane.getAnimation().setRate(slider.getValue()); } } else if (spane.getChildren().size() > (int) slider.getValue()) { for (int i = (int) slider.getValue(); i < spane.getChildren().size(); i++) { spane.getChildren().remove(spane.getChildren().size() - 1); } } }); } public static void main(String[] args) { launch(args); } class FanPane extends Pane { private double w = 200; private double h = 200; private double radius = Math.min(w, h) * 0.45; private Arc arc[] = new Arc[4]; private double startAngle = 30; private Circle circle = new Circle(w / 2, h / 2, radius); private Timeline animation; public FanPane() { circle.setStroke(Color.BLUE); circle.setFill(Color.WHITE); circle.setStrokeWidth(4); getChildren().add(circle); for (int i = 0; i < 4; i++) { arc[i] = new Arc(w / 2, h / 2, radius * 0.9, radius * 0.9, startAngle + i * 90, 35); arc[i].setFill(Color.RED); // Set fill color arc[i].setType(ArcType.ROUND); getChildren().addAll(arc[i]); } } public Timeline getAnimation() { return animation; } public void setAnimation(FanPane fan) { this.animation = new Timeline(new Keyframe(Duration.millis(50), e -> fan.move())); animation.setCycleCount(Timeline.INDEFINITE); animation.play(); } private double increment = 5; public void reverse() { increment = -increment; } public void move() { setStartAngle(startAngle + increment); } public void setStartAngle(double angle) { startAngle = angle; setValues(); } public void setValues() { radius = Math.min(w, h) * 0.45; circle.setRadius(radius); circle.setCenterX(w / 2); circle.setCenterY(h / 2); for (int i = 0; i < 4; i++) { arc[i].setRadiusX(radius * 0.9); arc[i].setRadiusY(radius * 0.9); arc[i].setCenterX(w / 2); arc[i].setCenterY(h / 2); arc[i].setStartAngle(startAngle + i * 90); } } public void setW(double w) { this.w = w; setValues(); } public void setH(double h) { this.h = h; setValues(); } public double getCenterX() { return circle.getCenterX(); } public double getCenterY() { return circle.getCenterY(); } public double getRadius() { return circle.getRadius(); } }}
