JavaFX Polygons

Polygon Drawing Procedures

The steps listed below should be followed to draw a polygon in JavaFX.

Step 1: Making a Class

Step 2: Creating a Polygon 

Step 3: Setting the Polygon's Properties

Step 4: Making a Group Object

Step 5: Making a Scene Object is Step 5

Step 6: Choosing the Stage's Title

Step 7: Including a Scene on Stage

Step 8: Displaying the Stage's Contents

Step 9: Launching the Application

Example 1

As implied by the name polygon, this program constructs a Polygon. The polygon's vertices' coordinates are supplied as parameters. The polygon will be built inside a scene that is housed within a stage. The stage's title is provided through the setTitle() method. The polygon is then attached to the newly established group. The group is associated with the location. The show() method is then used to display the outcome.

Program:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.Polygon;
import javafx.scene.control.*;
import javafx.stage.Stage;

import javafx.scene.Group;

public class App extends Application
{
    // launching the application
    public void start(Stage stage)
    {
        // setting title for the window.
        stage.setTitle("creation of polygon");

      Polygon polygon = new Polygon();

        // coordinates of the points of polygon that will be drawn
        polygon.getPoints().addAll(new Double[]{
            300.0, 50.0,
            450.0, 150.0,
            300.0, 250.0,
            150.0, 150.0,
         });

       
        Group group = new Group(polygon);
        Scene scene = new Scene(group, 500, 300);

        // setting the scene
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String args[])
    {
        // launching the application
        launch(args);
    }
}

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Output:

Example 2

As implied by the name of the application, polygon, a Polygon is created. The polygon's vertices' coordinates are supplied as parameters. The polygon's fill is set using the set Fill() function. The polygon will be built inside a scene that is housed within a stage. The stage's title is provided through the setTitle() method. The polygon is then attached to the newly established group. The group is associated with the location. The show() method is then used to display the outcome.

Program:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.Polygon;
import javafx.scene.control.*;
import javafx.stage.Stage;

import javafx.scene.Group;
public class App extends Application {

    // starting the application using this function
    public void start(Stage stage)
    {
        // setting the title for that stge so that test_polygon can be created.
        stge.setTitle("Example of Polygon creation");

        // these are the coordinates of coordinat of that test_polygon.
        double coordinat[] = { 10.0d, 140.0d, 30.0d, 110.0d, 40.0d,
            50.0d, 50.0d, 40.0d, 110.0d, 30.0d, 140.0d, 10.0d };

        // creating a polygon named test_polygon.
        Polygon test_polygon = new Polygon(coordinat);

        // setting fill for that polygon (test_polygon).
        test_polygon.setFill(Color.BLUE);

        // creating a Group for that polygon.
        Group grp = new Group(test_polygon);

        // creating a scene for that group.
        Scene scene = new Scene(grp, 500, 300);

        // setting that scene.
        stge.setScene(scene);

        stge.show();
    }

    public static void main(String args[])
    {
        // launching the application.
        launch(args);
    }
}

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Output:

Frequently Asked Questions

In JavaFX, how can you add a rectangle?

By instantiating the Rectangle class from the JavaFX.scene package, you may build a rectangle in JavaFX.

What approach is taken when drawing a polygon?

The polygon is drawn using the addPoint() and drawPolygon() methods.

What is the JavaFX inset?

The JavaFX Insets class is a component. The interior offsets for each of the four sides of the rectangular region are stored in the Insets class. The Insets class derives from Java.lang.Object class.

What does a JavaFX stage mean?

A Scene, made up of visual components, is hosted by a Stage in JavaFX. The Stage class in the JavaFX represents a stage in a JavaFX application. The start(Stage s) method of the Application class receives the platform-created primary stage as a parameter.

Conclusion

In this article, we have extensively discussed the JavaFX Polygons. In detail, we will discuss the procedure to draw a polygon in JavaFX with the help of various programs.

We hope this blog has helped you enhance your JavaFX Polygon knowledge. If you would like to learn more, check out our articles on JavaFX, JDK, and Java. Practice makes a man perfect. To practice and improve yourself in the interview, you can check out Top 100 SQL problems, Interview experience, Coding interview questions, and the Ultimate guide path for interviews.

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