java JavaFX | Light。现货类

JavaFX | Light。现货类

原文:https://www.geeksforgeeks.org/javafx-light-spot-class/

光。Spot 类是 JavaFX 的一部分。光。聚光灯类用于创建一个聚光灯，该聚光灯具有可配置的三维空间中的灯光方向向量、焦点和颜色值。光。光点类继承 光。点班。

类的构造函数:

聚光灯():使用默认值创建聚光灯
聚光灯(双 x，双 y，双 z，双 s，颜色 c) :创建具有指定的 x，y，z 值，镜面成分和灯光颜色的聚光灯

常用方法:

方法	说明
getPointsAtX()	返回光线方向向量的 x 坐标。
getPointsAtY()	返回光线方向向量的 y 坐标。
getPointsAtZ()	返回光线方向向量的 z 坐标。
get 镜象组件()	返回镜象组件的值。
setPointsAtX(双 v)	设置光线方向向量的 x 坐标值。
setPointsAtY（double v）	设置光线方向向量的 y 坐标值。
set point set(double v)	设置光线方向向量的 z 坐标值。
set 镜象组件(双 v)	设置镜象组件的值。

下面的程序说明了光的使用。现货类别:

Java Program to create a Spot light and add it to a rectangle: In this program we will create a Rectangle named rectangle with specified height and width. We will also create a Light.Spot object named light. We will set the x, y, z values using setX(), setY() and setZ() function. Now create a lighting object and add the light object to lighting using setLight() function. We will set the Lighting effect to the Rectangle and add it to the scene and add the scene to the stage and call the show function to display the results.

```java // Java Program to create a Spot light // and add it to a rectangle import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.Rectangle; import javafx.scene.control.; import javafx.stage.Stage; import javafx.scene.Group; import javafx.scene.effect.Light.; import javafx.scene.effect.*; import javafx.scene.paint.Color;

public class Spot_1 extends Application {

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

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

// create Spot Light object         Light.Spot light = new Light.Spot();

// set coordinates         light.setX(100);         light.setY(100);         light.setZ(100);

// create a lighting         Lighting lighting = new Lighting();

// set Light of lighting         lighting.setLight(light);

// create a rectangle         Rectangle rect = new Rectangle(250, 250);

// set fill         rect.setFill(Color.WHITE);

// set effect         rect.setEffect(lighting);

// create a Group         Group group = new Group(rect);

// 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 Spotlight and add it to a rectangle and set the coordinates of the direction vector of light and color of light: In this program we will create a Rectangle named rectangle with specified height and width. We will also create a Light.Spot object named light. We will set the x, y, z values using setX(), setY() and setZ() function. The coordinate of the direction vector of light is set using setPointsAtX(), setPointsAtY() and setPointsAtX(), and specify the value of color using setColor() function Now create a lighting object and add the light object to lighting using setLight() function. We will set the Lighting effect to the Rectangle and add it to the scene and add the scene to the stage and call the show function to display the results.

```java // Java Program to create a Spot light // and add it to a rectangle and set the // coordinates of direction vector of // light and color of light import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.shape.Rectangle; import javafx.scene.control.; import javafx.stage.Stage; import javafx.scene.Group; import javafx.scene.effect.Light.; import javafx.scene.effect.*; import javafx.scene.paint.Color;

public class Spot_2 extends Application {

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

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

// create Spot Light object         Light.Spot light = new Light.Spot();

// set coordinate of direction         // the vector of this light         light.setPointsAtX(0);         light.setPointsAtY(0);         light.setPointsAtZ(-60);

// set specular exponent         light.setSpecularExponent(2);

// set color of light         light.setColor(Color.RED);

// set coordinates         light.setX(100);         light.setY(100);         light.setZ(200);

// create a lighting         Lighting lighting = new Lighting();

// set Light of lighting         lighting.setLight(light);

// create a rectangle         Rectangle rect = new Rectangle(250, 250);

// set fill         rect.setFill(Color.WHITE);

// set effect         rect.setEffect(lighting);

// create a Group         Group group = new Group(rect);

// 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: