- JavaFX Tutorial
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- JavaFX Properties of 2D Objects
- JavaFX - Stroke Type Property
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- Operations on 2D Objects
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- JavaFX - DropShadow Effect
- JavaFX - InnerShadow Effect
- JavaFX - Lighting Effect
- JavaFX - Light.Distant Effect
- JavaFX - Light.Spot Effect
- JavaFX - Point.Spot Effect
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- Properties of 3D Objects
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- JavaFX Layout Panes
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- JavaFX CSS
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- Media with JavaFX
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- JavaFX Useful Resources
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- JavaFX - Discussion
Lighting Effect - (Spot Light as Source)
On applying this effect to a node, a light is simulated on it, as if it is being generated by a spot light.
Spot Light Source − The light from this source attenuates in all directions. The intensity of the light depends on the distance of the object from the source.
The class named Light.Spot of the package javafx.scene.effect represents the distant light source. This class contains four properties, which are −
pointsAtX − This property is of the type double and it represents the x coordinate of the direction of vector for this light.
pointsAtY − This property is of the type double and it represents the y coordinate of the direction of vector for this light.
pointsAtZ − This property is of the type double and it represents the z coordinate of the direction of vector for this light.
specularExponent − This property is of the type double and it represents the specular exponent, which controls the focus of this light source.
Example
The following program is an example demonstrating the lighting effect of JavaFX. In here, we are drawing a text “Welcome to Tutorialspoint” and a circle in a scene.
To these, we are applying the lighting effect, where the light is being emitted by a spotlight.
Save this code in a file with the name SpotLightExample.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 SpotLightExample 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 centre 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.Spot class Light.Spot light = new Light.Spot(); //Setting the color of the light light.setColor(Color.GRAY); //setting the position of the light light.setX(70); light.setY(55); light.setZ(45); //Instantiating the Lighting class Lighting lighting = new Lighting(); //Setting the light source lighting.setLight(light); //Applying lighting effect to the text text.setEffect(lighting); //Applying 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("Spot 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); } }
Compile and execute the saved java file from the command prompt using the following commands.
javac SpotLightExample.java java SpotLightExample
On executing, the above program generates a JavaFX window as shown below.
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