JavaFX Animation动画之地球升起

package projavafx.helloearthrise.ui;

import javafx.animation.Interpolator;
import javafx.animation.Timeline;
import javafx.animation.TranslateTransition;
import javafx.animation.TranslateTransitionBuilder;
import javafx.application.Application;
import javafx.geometry.VPos;
import javafx.scene.GroupBuilder;
import javafx.scene.Scene;
import javafx.scene.SceneBuilder;
import javafx.scene.image.Image;
import javafx.scene.image.ImageViewBuilder;
import javafx.scene.paint.Color;
import javafx.scene.shape.RectangleBuilder;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.scene.text.TextAlignment;
import javafx.scene.text.TextBuilder;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *  Main class for the \"Hello World\" style example
 */
public class HelloEarthRiseMain extends Application {

  /**
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    Application.launch(args);
  }
  
  @Override
  public void start(Stage stage) {
    
    String message = 
      \"Earthrise at Christmas: \" +
      \"[Forty] years ago this Christmas, a turbulent world \" +
      \"looked to the heavens for a unique view of our home \"  +
      \"planet. This photo of Earthrise over the lunar horizon \" +
      \"was taken by the Apollo 8 crew in December 1968, showing \" +
      \"Earth for the first time as it appears from deep space. \" +
      \"Astronauts Frank Borman, Jim Lovell and William Anders \" +
      \"had become the first humans to leave Earth orbit, \" +
      \"entering lunar orbit on Christmas Eve. In a historic live \" +
      \"broadcast that night, the crew took turns reading from \" +
      \"the Book of Genesis, closing with a holiday wish from \" +
      \"Commander Borman: \\\"We close with good night, good luck, \" +
      \"a Merry Christmas, and God bless all of you -- all of \" +
      \"you on the good Earth.\\\"\";

    // Reference to the Text
    Text textRef = TextBuilder.create()
      .layoutY(100)
      .textOrigin(VPos.TOP)
      .textAlignment(TextAlignment.JUSTIFY)
      .wrappingWidth(400)
      .text(message)
      .fill(Color.rgb(187, 195, 107))
      .font(Font.font(\"SansSerif\", FontWeight.BOLD, 24))
      .build();

    // Provides the animated scrolling behavior for the text
    TranslateTransition transTransition = TranslateTransitionBuilder.create()
      .duration(new Duration(75000))
      .node(textRef)
      .toY(-820)
      .interpolator(Interpolator.LINEAR)
      .cycleCount(Timeline.INDEFINITE)
      .build();

    Scene scene  = SceneBuilder.create()
      .width(516)
      .height(387)
      .root(
        GroupBuilder.create()
          .children(
            ImageViewBuilder.create()
              .image(new Image(\"http://projavafx.com/images/earthrise.jpg\"))
              .build(),
            GroupBuilder.create()
              .layoutX(50)
              .layoutY(180)
              .children(
                textRef
              )
              .clip(
                RectangleBuilder.create()
                  .width(430)
                  .height(85)
                  .build()
              )
              .build()
          )
          .build()
      )
      .build();

    stage.setScene(scene);
    stage.set (\"Hello Earthrise\");
    stage.show();
    
    // Start the text animation
    transTransition.play();
  }
}