java JavaFX |辉光类

JavaFX |辉光类

原文:https://www.geeksforgeeks.org/javafx-glow-class/

Glow 类是 JavaFX 的一部分。发光是一种高级效果，使用可配置的阈值使输入图像看起来发光。辉光类继承效果类。

类的构造函数:

辉光():使用默认参数创建新的辉光对象。
发光(双 l) :创建一个具有指定等级的发光新实例。

常用方法:

方法	说明
getInput()	返回属性输入的值
设置输入(效果五)	设置属性输入的值
setLevel(双 v)	设置发光对象的级别值
getLevel()	返回发光对象的级别值

下面的程序说明了发光类的使用:

Java Program to add a image and add Glow effect to it: In this program a FileInputStream is created and an image is taken as input from a file. Image named image is created using the input from the file input stream. From the image, an image view object is created and it is added to the VBox. The VBox is then added to the scene and the scene is added to the stage. A Glow effect is created with a specified level passed as parameters and the effect is set to the image view using setEffect() function.

```java // Java Program to add a image and // add Glow effect to it. import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.; import javafx.scene.layout.; import javafx.stage.Stage; import javafx.scene.image.; import javafx.scene.effect.; import java.io.*; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Group;

public class glow_1 extends Application {

// launch the application     public void start(Stage stage) throws Exception     {

// set title for the stage         stage.setTitle("Glow Example");

// create a input stream         FileInputStream input = new FileInputStream("D:\GFG.png");

// create a image         Image image = new Image(input);

// create a image View         ImageView imageview = new ImageView(image);

// create a glow effect         Glow glow = new Glow(0.5);

// set effect         imageview.setEffect(glow);

// create a VBox         VBox vbox = new VBox(imageview);

// create a scene         Scene scene = new Scene(vbox, 200, 200);

// set the scene         stage.setScene(scene);

stage.show();     }

// Main Method     public static void main(String args[])     {

// launch the application         launch(args);     } } ```

输入图像:

输出:
Java Program to add an image and add a Glow effect to it, and also add a button to change the glow level: In this program, an FileInputStream is created and an image is taken as input from a file. Image named image is created using the input from the file input stream. From the image, an image view object is created and it is added to the VBox. The VBox is then added to the scene and the scene is added to the stage. A Glow effect is created with a specified level passed as parameters and the effect is set to the image view using setEffect() function. A Button named button is created which is used to increase the glow of the image. The button is also added to the VBox. The glow of the image is increased using the setLevel() function. The events related to the button is handled using EventHandler.

```java // Java Program to add a image and // add Glow effect to it, and also // add a button to change the glow level import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.; import javafx.scene.layout.; import javafx.stage.Stage; import javafx.scene.image.; import javafx.scene.effect.; import java.io.*; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Group;

public class glow_2 extends Application {

double level = 0.1;

// launch the application     public void start(Stage stage) throws Exception     {

// set title for the stage         stage.setTitle("Glow Example");

// create a input stream         FileInputStream input = new FileInputStream("D:\GFG.png");

// create a image         Image image = new Image(input);

// create a image View         ImageView imageview = new ImageView(image);

// create a glow effect         Glow glow = new Glow(level);

// create a button         Button button = new Button("Glow");

// action event         EventHandler event = new EventHandler() {

public void handle(ActionEvent e)             {

// increase the level                 level += 0.1;                 if (level > 1)                     level = 0.0;

// set Level gor glow                 glow.setLevel(level);             }         };

// set on action of button         button.setOnAction(event);

// set effect         imageview.setEffect(glow);

// create a VBox         VBox vbox = new VBox(imageview, button);

// create a scene         Scene scene = new Scene(vbox, 200, 200);

// set the scene         stage.setScene(scene);

stage.show();     }

// Main Method     public static void main(String args[])     {

// launch the application         launch(args);     } } ```

输入图像:

输出图像:

https://media.geeksforgeeks.org/wp-content/uploads/Glow.mp4