Javafx 简明教程
JavaFX - Light.Distant Effect
将远光效果应用于某个节点时,就会模拟它上面的光,就好像它是由远处光源生成的一样。
Distant Light Source − 与节点距离较远的某个光源。在此,光从光源向一个方向衰减。
包 javafx.scene.effect 中名为 Light.Distant 的类表示远光源。该类包含两个属性,包括 −
-
azimuth − 此属性是 double 类型,表示光的方位角。
-
elevation − 此属性是 double 类型,表示光的仰角。
Example
以下程序是一个展示 JavaFX 光照效果的示例。在此示例中,光源是远光源。下面我们正在场景中绘制文本“Welcome to Tutorialspoint”和一个圆。
我们将对其应用光照效果,其中光由远光源发出。
将此代码另存为 DistantLightingExample.java 。
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.effect.Light;
import javafx.scene.effect.Lighting;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
public class DistantLightingExample extends Application {
@Override
public void start(Stage stage) {
//Creating a Text object
Text text = new Text();
//Setting font to the text
text.setFont(Font.font(null, FontWeight.BOLD, 40));
//setting the position of the text
text.setX(60);
text.setY(50);
//Setting the text to be embedded.
text.setText("Welcome to Tutorialspoint");
//Setting the color of the text
text.setFill(Color.RED);
//Drawing a Circle
Circle circle = new Circle();
//Setting the center of the circle
circle.setCenterX(300.0f);
circle.setCenterY(160.0f);
//Setting the radius of the circle
circle.setRadius(100.0f);
//setting the fill color of the circle
circle.setFill(Color.CORNFLOWERBLUE);
//Instantiating the Light.Distant class
Light.Distant light = new Light.Distant();
//Setting the properties of the light source
light.setAzimuth(45.0);
light.setElevation(30.0);
//Instantiating the Lighting class
Lighting lighting = new Lighting();
//Setting the source of the light
lighting.setLight(light);
//Applying the lighting effect to the text
text.setEffect(lighting);
//Applying the lighting effect to the circle
circle.setEffect(lighting);
//Creating a Group object
Group root = new Group(text,circle);
//Creating a scene object
Scene scene = new Scene(root, 600, 300);
//Setting title to the Stage
stage.setTitle("Distant light effect 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,从命令提示符编译并执行已保存的 java 文件。
javac --module-path %PATH_TO_FX% --add-modules javafx.controls DistantLightingExample.java
java --module-path %PATH_TO_FX% --add-modules javafx.controls DistantLightingExample