javafx/javafx2.samples/TransitionPath/src/transitionpath/TransitionPath.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 transitionpath;

import javafx.animation.PathTransition;
import javafx.animation.PathTransition.OrientationType;
import javafx.animation.PathTransitionBuilder;
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.CubicCurveTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.PathBuilder;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 * A sample in which a node moves along a path from end to end over a given time.
 *
 * @related animation/transitions/FadeTransition
 * @related animation/transitions/FillTransition
 * @related animation/transitions/ParallelTransition
 * @related animation/transitions/PauseTransition
 * @related animation/transitions/RotateTransition
 * @related animation/transitions/ScaleTransition
 * @related animation/transitions/SequentialTransition
 * @related animation/transitions/StrokeTransition
 * @related animation/transitions/TranslateTransition
 * @see javafx.animation.PathTransition
 * @see javafx.animation.PathTransitionBuilder
 * @see javafx.animation.Transition
 */
public class TransitionPath extends Application {

    private PathTransition pathTransition;

    private void init(Stage primaryStage) {
        Group root = new Group();
        primaryStage.setResizable(false);
        primaryStage.setScene(new Scene(root, 400,260));
        Rectangle rect = new Rectangle (0, 0, 40, 40);
        rect.setArcHeight(10);
        rect.setArcWidth(10);
        rect.setFill(Color.ORANGE);
        root.getChildren().add(rect);
        Path path = PathBuilder.create()
                .elements(
                    new MoveTo(20,20),
                    new CubicCurveTo(380, 0, 380, 120, 200, 120),
                    new CubicCurveTo(0, 120, 0, 240, 380, 240)
                )
                .build();
        path.setStroke(Color.DODGERBLUE);
        path.getStrokeDashArray().setAll(5d,5d);
        root.getChildren().add(path);
        
        pathTransition = PathTransitionBuilder.create()
                .duration(Duration.seconds(4))
                .path(path)
                .node(rect)
                .orientation(OrientationType.ORTHOGONAL_TO_TANGENT)
                .cycleCount(Timeline.INDEFINITE)
                .autoReverse(true)
                .build();
    }

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

    @Override public void stop() {
        pathTransition.stop();
    }

    @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);
    }
}