java JavaFX | AmbientLight 类

JavaFX | AmbientLight 类

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

AmbientLight 类是 JavaFX 的一部分。这个类定义了一个环境光对象。AmbientLight 类创建一个似乎来自所有方向的光源。

该类的构造函数为:

环境光():创建默认为白色的环境光源
环境光(颜色 c) :创建指定颜色的环境光源

以下方法继承自 LightBase :

方法	说明
获得颜色（）	返回光线的颜色
isLightOn()	返回灯是否亮着
设置颜色(颜色值)	设置灯光的颜色
setLightOn(布尔值)	设置 lightOn 属性的值。

下面的程序将说明 AmbientLight 类的使用:

Java program to create a ambient light of default color: This program creates a Sphere indicated by the name sphere(radius is passed as arguments). A AmbientLight is created named ambient_light of default white color. A Button named button will be created which will be used to turn the ambient light on or off. The Sphere will be created inside a scene, which in turn will be hosted inside a stage. The function setTitle() is used to provide title to the stage. Then a Group is created, and the sphere, button and ambient light is attached.The group is attached to the scene. Finally, the show() method is called to display the final results.

```java // Java program to create a ambient light of default color import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.DrawMode; import javafx.scene.layout.; import javafx.event.ActionEvent; import javafx.scene.AmbientLight; import javafx.scene.shape.Sphere; import javafx.scene.control.; import javafx.stage.Stage; import javafx.scene.Group; import javafx.scene.PerspectiveCamera; import javafx.scene.paint.Color; import javafx.event.ActionEvent; import javafx.event.EventHandler;

public class ambient_light_1 extends Application {

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

// set title for the stage         stage.setTitle("creating ambient_light");

// create a sphere         Sphere sphere = new Sphere(80.0f);

// create a ambient light         AmbientLight ambient_light = new AmbientLight();

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

// create a Group         Group group = new Group(sphere, ambient_light, button);

// translate the sphere to a position         sphere.setTranslateX(100);         sphere.setTranslateY(100);

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

public void handle(ActionEvent e)             {                 ambient_light.setLightOn(!ambient_light.isLightOn());             }         };

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

// create a scene         Scene scene = new Scene(group, 500, 300);

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

stage.show();     }

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

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

输出:
Java program to create a ambient light of a specified color: This program creates a Sphere indicated by the name sphere(radius is passed as arguments). A AmbientLight is created named ambient_light of a specified color(RED). A Button named button will be created which will be used to turn the ambient light on or off. The Sphere will be created inside a scene, which in turn will be hosted inside a stage. The function setTitle() is used to provide title to the stage. Then a Group is created, and the sphere, button and ambient light is attached.The group is attached to the scene. Finally, the show() method is called to display the final results.

```java // Java program to create a ambient light // of a specified color import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.DrawMode; import javafx.scene.layout.; import javafx.event.ActionEvent; import javafx.scene.AmbientLight; import javafx.scene.shape.Sphere; import javafx.scene.control.; import javafx.stage.Stage; import javafx.scene.Group; import javafx.scene.PerspectiveCamera; import javafx.scene.paint.Color; import javafx.event.ActionEvent; import javafx.event.EventHandler;

public class ambient_light_2 extends Application {

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

// set title for the stage         stage.setTitle("creating ambient_light");

// create a sphere         Sphere sphere = new Sphere(80.0f);

// create a ambient light         AmbientLight ambient_light = new AmbientLight(Color.RED);

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

// create a Group         Group group = new Group(sphere, ambient_light, button);

// translate the sphere to a position         sphere.setTranslateX(100);         sphere.setTranslateY(100);

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

public void handle(ActionEvent e)             {                 ambient_light.setLightOn(!ambient_light.isLightOn());             }         };

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

// create a scene         Scene scene = new Scene(group, 500, 300);

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

stage.show();     }

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

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

输出: