java JavaFX | BoxBlur 类

JavaFX | BoxBlur 类

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

BoxBlur 类是 JavaFX 的一部分。框模糊使用简单的框过滤器来模糊节点。BoxBlur 用于在 JavaFX 中实现模糊。一种模糊效果，使用一个简单的箱式过滤器内核，在两个维度上都有可单独配置的大小，以及一个控制最终模糊质量的迭代参数。

box blur 类有三个组件:

高度:效果的垂直维度。
宽度:效果的水平维度。
迭代次数:模糊效果的迭代次数。

类的构造函数:

BoxBlur() :创建 BoxBlur 的新对象。
BoxBlur(double w，double h，int i) :用指定的宽度、高度和迭代创建一个新的 BoxBlur 对象。

常用方法:

方法	说明
getHeight（）	返回效果的垂直尺寸
getWidth（）	返回效果的水平尺寸
getIterations()	返回效果的迭代次数
getInput()	获取属性输入的值。
设置输入(效果五)	设置属性输入的值。
setHeight(双 v)	设置效果的垂直尺寸
setWidth(双 v)	设置效果的水平尺寸
设置迭代(整数)	设置效果的迭代次数

下面的程序说明了 BoxBlur 类的使用:

Java program to import an image and add Box Blur 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 BoxBlur 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 import an image and // add Box Blur 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 box_blur_1 extends Application {

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

// set title for the stage         stage.setTitle("BoxBlur 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 box blur effect         BoxBlur box_blur = new BoxBlur();

// set effect         imageview.setEffect(box_blur);

// 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 import an image and blur effect to it with separately configurable sizes in both dimensions, and an iteration parameter: 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 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 BoxBlur effect is created with a specified level passed as parameters and the effect is set to the image view using setEffect() function. The width, height and the number of iterations of the effect is set using setHeight(), setWidth() and setIterations() function respectively.

```java // Java program to import an image and blur effect // to it with separately configurable sizes in both // dimensions, and an iteration parameter 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 box_blur_2 extends Application {

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

// set title for the stage         stage.setTitle("BoxBlur 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 box blur effect         BoxBlur box_blur = new BoxBlur();

// set width         box_blur.setWidth(10.0f);

// set height         box_blur.setHeight(10.0f);

// set Iterations         box_blur.setIterations(3);

// set effect         imageview.setEffect(box_blur);

// 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: