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JavaFX顺序转换

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本文概述

此过渡用于按顺序(一个接一个)在节点上应用动画列表。顺序过渡对于设计按顺序动画其实体的游戏很重要。

在JavaFX中, 类javafx.animation.SequentialTransition用于表示顺序转换。我们需要将多个过渡对象的列表传递到此类的构造函数中。这些动画将按顺序应用到节点上(按顺序将它们传递到构造函数中)。

属性

该类仅包含一个属性, 下表及其setter方法对此属性进行了描述。

属性 描述 设置方法
node 它是Node类的对象类型属性。它表示要在其上应用过渡的节点。 setNode(Node node)

构造函数

该类中有四个构造函数。

  1. public SequentialTransition():使用默认参数创建一个SequentialTransition实例。
  2. public SequentialTransition(Animation?children):创建一个带有动画列表的SequentialTransition实例。
  3. public SequentialTransition(Node node):创建一个带有指定节点的sequenceTransition实例, 在该节点上要应用顺序转换。
  4. public SequentialTransition(Node node, Animation?children):创建带有指定节点和动画列表的SequentialTransition实例。

在以下示例中, 我们创建了一个多边形, 并按顺序对其应用了各种过渡。

package application;
import javafx.animation.FadeTransition;
import javafx.animation.PauseTransition;
import javafx.animation.RotateTransition;
import javafx.animation.ScaleTransition;
import javafx.animation.SequentialTransition;
import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Polygon;
import javafx.stage.Stage;
import javafx.util.Duration;
public class SequentialTransitionExample extends Application{

	@Override
	public void start(Stage primaryStage) throws Exception {
		// TODO Auto-generated method stub

Polygon poly = new Polygon();
		
		 //Setting points for the polyogn 
		 poly.getPoints().addAll(new Double[] {320.0, 270.0, 270.0, 220.0, 270.0, 270.0, 320.0, 120.0, 370.0, 270.0, 370.0, 220.0});
		
		 //Setting Color and Stroke properties for the polygon  
		 poly.setFill(Color.LIMEGREEN);
		 poly.setStroke(Color.BLACK);
	 
		 //Setting durations for the transitions
	     Duration dur1 = Duration.millis(1000);
	     Duration dur2 = Duration.millis(500);
	 
	     
	     //Setting the pause transition
	     PauseTransition pause = new PauseTransition(Duration.millis(1000));
	     
	     //Setting the fade transition 
	     FadeTransition fade = new FadeTransition(dur2);
	     fade.setFromValue(1.0f);
	     fade.setToValue(0.3f);
	     fade.setCycleCount(2);
	     fade.setAutoReverse(true);
	     
	     //Setting Translate transition
	     TranslateTransition translate = new TranslateTransition(dur1);
	     translate.setToX(-150f);
	     translate.setCycleCount(2);
	     translate.setAutoReverse(true);
	     
	     //Setting Rotate Transition 
	     RotateTransition rotate = new RotateTransition(dur2);
	     rotate.setByAngle(180f);
	     rotate.setCycleCount(4);
	     rotate.setAutoReverse(true);
	     
	     //Setting Scale Transition 
	     ScaleTransition scale = new ScaleTransition(dur1);
	     scale.setByX(1.5f);
	     scale.setByY(1.2f);
	     scale.setCycleCount(2);
	     scale.setAutoReverse(true);
	     
	     //Instantiating Sequential Transition class by passing the list of transitions into its constructor
	     SequentialTransition seqT = new SequentialTransition (poly, rotate, pause, fade, translate, scale);
	     
	     //playing the transition 
	     seqT.play();
	 	 
	     //Configuring the group and scene 
	     Group root = new Group();
		 root.getChildren().addAll(poly);
		 Scene scene = new Scene(root, 490, 450, Color.WHEAT);
		 primaryStage.setScene(scene);
		 primaryStage.setTitle("Sequential Transition Example");
		 primaryStage.show();
	}
	public static void main(String[] args) {
		launch(args);
	}

}

输出:

JavaFX顺序转换
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