JavaFX 幾何變換

淡入淡出動畫

下面是演示 JavaFX 中淡入淡出動畫的程式。將此程式碼儲存到名為 **FadeTransitionExample.java** 的檔案中。

import javafx.animation.FadeTransition; 
import javafx.application.Application; 
import javafx.scene.Group; 
import javafx.scene.Scene; 
import javafx.scene.paint.Color; 
import javafx.scene.shape.Circle; 
import javafx.stage.Stage; 
import javafx.util.Duration; 
         
public class FadeTransitionExample extends Application { 
   @Override 
   public void start(Stage stage) {
      //Drawing a Circle 
      Circle circle = new Circle(); 
      
      //Setting the position of the circle 
      circle.setCenterX(300.0f);  
      circle.setCenterY(135.0f); 
      
      //Setting the radius of the circle 
      circle.setRadius(100.0f); 
      
      //Setting the color of the circle 
      circle.setFill(Color.BROWN); 
      
      //Setting the stroke width of the circle 
      circle.setStrokeWidth(20); 
       
      //Creating the fade Transition 
      FadeTransition fadeTransition = new FadeTransition(Duration.millis(1000)); 
      
      //Setting the node for Transition 
      fadeTransition.setNode(circle); 
      
      //Setting the property fromValue of the transition (opacity) 
      fadeTransition.setFromValue(1.0); 
      
      //Setting the property toValue of the transition (opacity) 
      fadeTransition.setToValue(0.3); 
      
      //Setting the cycle count for the transition 
      fadeTransition.setCycleCount(50); 
      
      //Setting auto reverse value to false 
      fadeTransition.setAutoReverse(false); 
  
      //Playing the animation 
      fadeTransition.play(); 
         
      //Creating a Group object  
      Group root = new Group(circle); 
         
      //Creating a scene object 
      Scene scene = new Scene(root, 600, 300); 
      
      //Setting title to the Stage 
      stage.setTitle("Fade transition example"); 
         
      //Adding scene to the stage 
      stage.setScene(scene); 
         
      //Displaying the contents of the stage 
      stage.show(); 
   }      
   public static void main(String args[]){ 
      launch(args); 
   } 
}

使用以下命令在命令提示符下編譯並執行儲存的 java 檔案。

javac FadeTransitionExample.java 
java FadeTransitionExample

執行後，上述程式將生成如下所示的 JavaFX 視窗。

填充動畫

下面是演示 JavaFX 中填充動畫的程式。將此程式碼儲存到名為 **FillTransitionExample.java** 的檔案中。

import javafx.animation.FillTransition; 
import javafx.application.Application; 
import javafx.scene.Group; 
import javafx.scene.Scene; 
import javafx.scene.paint.Color; 
import javafx.scene.shape.Circle; 
import javafx.stage.Stage; 
import javafx.util.Duration; 
         
public class FillTransitionExample extends Application { 
   @Override 
   public void start(Stage stage) {      
      //Drawing a Circle 
      Circle circle = new Circle(); 
      
      //Setting the position of the circle 
      circle.setCenterX(300.0f); 
      circle.setCenterY(135.0f); 
      
      //Setting the radius of the circle 
      circle.setRadius(100.0f); 
      
      //Setting the color of the circle 
      circle.setFill(Color.BROWN); 
      
      //Setting the stroke width of the circle 
      circle.setStrokeWidth(20); 
       
      //Creating the fill Transition 
      FillTransition fillTransition = new FillTransition(Duration.millis(1000)); 
      
      //Setting the shape for Transition 
      fillTransition.setShape(circle); 
      
      //Setting the from value of the transition (color) 
      fillTransition.setFromValue(Color.BLUEVIOLET);  
      
      //Setting the toValue of the transition (color) 
      fillTransition.setToValue(Color.CORAL); 
      
      //Setting the cycle count for the transition 
      fillTransition.setCycleCount(50); 
      
      //Setting auto reverse value to false 
      fillTransition.setAutoReverse(false);  
      
      //Playing the animation 
      fillTransition.play(); 
         
      //Creating a Group object  
      Group root = new Group(circle); 
         
      //Creating a scene object 
      Scene scene = new Scene(root, 600, 300);   
      
      //Setting title to the Stage
      stage.setTitle("Fill transition example"); 
         
      //Adding scene to the stage 
      stage.setScene(scene); 
         
      //Displaying the contents of the stage 
      stage.show(); 
   }      
   public static void main(String args[]){ 
      launch(args); 
   } 
}

使用以下命令在命令提示符下編譯並執行儲存的 java 檔案。

javac FillTransitionExample.java 
java FillTransitionExample

執行後，上述程式將生成如下所示的 JavaFX 視窗。

描邊動畫

下面是演示 JavaFX 中描邊動畫的程式。將此程式碼儲存到名為 **StrokeTransitionExample.java** 的檔案中。

import javafx.animation.StrokeTransition; 
import javafx.application.Application; 
import javafx.scene.Group; 
import javafx.scene.Scene; 
import javafx.scene.paint.Color; 
import javafx.scene.shape.Circle; 
import javafx.stage.Stage; 
import javafx.util.Duration; 
         
public class StrokeTransitionExample extends Application { 
   @Override 
   public void start(Stage stage) {      
      //Drawing a Circle 
      Circle circle = new Circle(); 
      
      //Setting the position of the circle 
      circle.setCenterX(300.0f); 
      circle.setCenterY(135.0f); 
      
      //Setting the radius of the circle 
      circle.setRadius(100.0f); 
      
      //Setting the color of the circle 
      circle.setFill(Color.BROWN); 
      
      //Setting the stroke width of the circle 
      circle.setStrokeWidth(20); 
       
      //creating stroke transition  
      StrokeTransition strokeTransition = new StrokeTransition(); 
      
      //Setting the duration of the transition 
      strokeTransition.setDuration(Duration.millis(1000)); 
      
      //Setting the shape for the transition 
      strokeTransition.setShape(circle); 
      
      //Setting the fromValue property of the transition (color) 
      strokeTransition.setFromValue(Color.BLACK); 
      
      //Setting the toValue property of the transition (color) 
      strokeTransition.setToValue(Color.BROWN); 
       
      //Setting the cycle count for the transition 
      strokeTransition.setCycleCount(50); 
      
      //Setting auto reverse value to false 
      strokeTransition.setAutoReverse(false); 
      
      //Playing the animation 
      strokeTransition.play(); 
         
      //Creating a Group object  
      Group root = new Group(circle); 
         
      //Creating a scene object 
      Scene scene = new Scene(root, 600, 300);  
      
      //Setting title to the Stage 
      stage.setTitle("Stroke transition example"); 
         
      //Adding scene to the stage 
      stage.setScene(scene); 
         
      //Displaying the contents of the stage 
      stage.show(); 
   }      
   public static void main(String args[]){ 
      launch(args); 
   } 
}

使用以下命令在命令提示符下編譯並執行儲存的 java 檔案。

javac StrokeTransitionExample.java 
java StrokeTransitionExample 

執行後，上述程式將生成如下所示的 JavaFX 視窗。