javafx/javafx2.samples/ChartAdvancedScatterLive/src/chartadvancedscatterlive/ChartAdvancedScatterLive.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package chartadvancedscatterlive;

import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.SequentialTransition;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.ScatterChart;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 * A live scatter chart.
 *
 * @see javafx.scene.chart.Chart
 * @see javafx.scene.chart.NumberAxis
 * @see javafx.scene.chart.ScatterChart
 * @see javafx.scene.chart.XYChart
 *
 */
public class ChartAdvancedScatterLive extends Application {

    private ScatterChart.Series<Number,Number> series;
    private double nextX = 0;
    private SequentialTransition animation;

    private void init(Stage primaryStage) {
        Group root = new Group();
        primaryStage.setScene(new Scene(root));
        root.getChildren().add(createChart());
        // create animation
        Timeline timeline1 = new Timeline();
        timeline1.getKeyFrames().add(
            new KeyFrame(Duration.millis(20), new EventHandler<ActionEvent>() {
                @Override public void handle(ActionEvent actionEvent) {
                    series.getData().add(new XYChart.Data<Number, Number>(
                            nextX,
                            Math.sin(Math.toRadians(nextX)) * 100
                    ));
                    nextX += 10;
                }
            })
        );
        timeline1.setCycleCount(200);
        Timeline timeline2 = new Timeline();
        timeline2.getKeyFrames().add(
                new KeyFrame(Duration.millis(50), new EventHandler<ActionEvent>() {
                    @Override public void handle(ActionEvent actionEvent) {
                        series.getData().add(new XYChart.Data<Number, Number>(
                                nextX,
                                Math.sin(Math.toRadians(nextX)) * 100
                        ));
                        if (series.getData().size() > 54) series.getData().remove(0);
                        nextX += 10;
                    }
                })
        );
        timeline2.setCycleCount(Animation.INDEFINITE);
        animation = new SequentialTransition();
        animation.getChildren().addAll(timeline1,timeline2);
    }

    protected ScatterChart<Number, Number> createChart() {
        final NumberAxis xAxis = new NumberAxis();
        xAxis.setForceZeroInRange(false);
        final NumberAxis yAxis = new NumberAxis(-100,100,10);
        final ScatterChart<Number,Number> sc = new ScatterChart<Number,Number>(xAxis,yAxis);
        // setup chart
        sc.setId("liveScatterChart");
        sc.setTitle("Animated Sine Wave ScatterChart");
        xAxis.setLabel("X Axis");
        xAxis.setAnimated(false);
        yAxis.setLabel("Y Axis");
        yAxis.setAutoRanging(false);
        // add starting data
        series = new ScatterChart.Series<Number,Number>();
        series.setName("Sine Wave");
        series.getData().add(new ScatterChart.Data<Number, Number>(5d, 5d));
        sc.getData().add(series);
        return sc;
    }

    public void play() {
        animation.play();
    }

    @Override public void stop() {
        animation.pause();
    }    

    @Override public void start(Stage primaryStage) throws Exception {
        init(primaryStage);
        primaryStage.show();
        play();
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX 
     * application. main() serves only as fallback in case the 
     * application can not be launched through deployment artifacts,
     * e.g., in IDEs with limited FX support. NetBeans ignores main().
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
}