JavaFX FXML Basic Example

Animations.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package animations;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;



/**
 *
 * @author toor
 */
public class Animations extends Application {
    
    @Override
    public void start(Stage stage) throws Exception {
        FXMLLoader spinnerSceneLoader = new FXMLLoader(getClass().getResource("Spinner.fxml"));
        Parent root = (Parent) spinnerSceneLoader.load();
        
        SpinnerController ctrlrPointer = (SpinnerController) spinnerSceneLoader.getController();
        
        
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
}

Spinner.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.shape.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.text.TextAlignment?>

<AnchorPane id="AnchorPane" prefHeight="320" prefWidth="400.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="animations.SpinnerController">
	<children>
		<Label layoutX="0" layoutY="5" minWidth="400" style="-fx-alignment: center;">
			<font>
				<Font size="15" />
			</font>
			<text>Hello World</text>
		</Label>
		<Button fx:id="button" contentDisplay="CENTER" defaultButton="true" layoutX="161.0" layoutY="272.0" onAction="#handleButtonAction" text="Click Me!" />
		<Label fx:id="label" layoutX="10" layoutY="30" minHeight="20" minWidth="70">
			<text>You haven't spun yet!</text>
		</Label>
		<Polygon fill="#009918" layoutX="200" layoutY="35" stroke="BLACK" strokeType="OUTSIDE">
			<points>
                <Double fx:value="-5.0" />
                <Double fx:value="4.0" />
                <Double fx:value="5.0" />
                <Double fx:value="4.0" />
                <Double fx:value="0.0" />
                <Double fx:value="10.0" />
            </points>
        </Polygon>
		<Group fx:id="spinnerPolygon" layoutX="200.0" layoutY="145.0" rotate="0">
			<children>
				<Circle fill="DODGERBLUE" layoutX="0" layoutY="5" radius="100.0" stroke="BLACK" strokeType="INSIDE" />
				<Line endX="100.0" layoutX="0" layoutY="5" />
				<Line endX="100.0" layoutX="-100.0" layoutY="5" />
				<Line endX="100.0" layoutX="-50.0" layoutY="-45.0" rotate="90.0" />
				<Line endX="50.0" layoutX="0" layoutY="55.0" rotate="90.0" startX="-50.0" />
				<!-- This is a comment -->
				<Label layoutX="20" layoutY="-20" minHeight="20" minWidth="20" text="0" />
				<Label layoutX="20" layoutY="20" minHeight="20" minWidth="20" text="1" />
				<Label layoutX="-20" layoutY="20" minHeight="20" minWidth="20" text="2" />
				<Label layoutX="-20" layoutY="-20" minHeight="20" minWidth="20" text="3" />
			</children>
		</Group>
	</children>
</AnchorPane>

SpinnerController.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package animations;

import java.net.URL;
import java.util.Random;
import java.util.ResourceBundle;
import javafx.animation.RotateTransition;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.Group;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.util.Duration;

/**
 *
 * @author toor
 */
public class SpinnerController implements Initializable {

    private double angleTurned = 0.0;
    
    @FXML private Group spinnerPolygon;
    @FXML private Label label;
    @FXML private Button button;
    
    @FXML
    private void handleButtonAction(ActionEvent event) {
        RotateTransition spinSpinner;
        spinSpinner = new RotateTransition(Duration.millis(1000), spinnerPolygon);
        double randomNum = angleToSpin();
        angleTurned = (angleTurned + randomNum) % 360.0;
        spinSpinner.setByAngle(randomNum);
        spinSpinner.play();
        int newLoc = landinglocation(angleTurned);

        System.out.println("newloc: " + newLoc);
        System.out.println("angleTurned " + angleTurned);
        
        spinSpinner.setOnFinished(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent event) {
                label.setText("you are on quartile: " + newLoc);
            }
        });
        

    }

    private double angleToSpin() {
        Random r = new Random();
        return (r.nextDouble() * 720);
    }
    
    private int landinglocation (double d) {
        return (int) Math.floor((360.0 - d) / 90);
    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    }

}