import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Camera;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.PerspectiveCamera;
import javafx.scene.PointLight;
import javafx.scene.Scene;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.PickResult;
import javafx.scene.paint.Color;
import javafx.scene.paint.Material;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Sphere;
import javafx.stage.Stage;

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 */
/**
 *
 * @author Andrew Glushchenko
 */
public class LodHelperTranslateTestApp extends Application{

    
    private Group sphereGroup;
    private Group root;
    private Group cameraGroup;
    private Sphere sphere1;
    private Sphere sphere2;
    private Material mtrl;
    private PointLight pl = new PointLight(Color.GREEN);
    
    @Override
    public void start(Stage stage) throws Exception {
        mtrl = new PhongMaterial(Color.AQUA);
        sphere1 = new Sphere();
        sphere1.setMaterial(mtrl);
        sphere1.setScaleX(100);
        sphere1.setScaleY(100);
        sphere1.setScaleY(100);
        sphere1.setTranslateX(-100);
        sphere2 = new Sphere();
        sphere2.setMaterial(mtrl);
        sphere2.setScaleX(100);
        sphere2.setScaleY(100);
        sphere2.setScaleY(100);
        sphere2.setTranslateX(100);
        pl.setTranslateX(-300);
        sphereGroup = new Group(sphere1,sphere2);
        sphereGroup.getChildren().add(pl);
        root = new Group(sphereGroup);
        Scene scene = new Scene(root,500,500);
        cameraGroup = new Group(addCamera(scene));
        root.getChildren().add(cameraGroup);
        sphereGroup.setTranslateX(250);
        sphereGroup.setTranslateY(250);
        
        scene.setOnMouseClicked(new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent t) {
                PickResult pr = t.getPickResult();
                Node n = pr.getIntersectedNode();
                if(n!=null){
                    System.out.println(n.computeAreaInScreen());
                }            
            }
        });
        scene.setOnKeyPressed(new EventHandler<KeyEvent>() {

            @Override
            public void handle(KeyEvent t) {
                switch(t.getText()){
                    case "1":
                        moveSphere(-100);
                        break;
                    case "2":
                        moveSphere(100);
                        break;
                    case "3":
                        moveGroup(-100);
                        break;
                    case "4":
                        moveGroup(100);
                        break;
                }
            }
        });
        
        
        stage.setScene(scene);
        stage.show();
    }
    private void moveSphere(double delta){
        System.out.println("moveSphere");
        sphere1.setTranslateZ(sphere1.getTranslateZ() + delta);
        sphere2.setTranslateZ(sphere2.getTranslateZ() + delta);
    }
    private void moveGroup(double delta){
        System.out.println("moveGroup");
        sphereGroup.setTranslateZ(sphereGroup.getTranslateZ() + delta);
    }
    
    private Camera addCamera(Scene scene){
        PerspectiveCamera pc = new PerspectiveCamera(false);
        scene.setCamera(pc);
        return pc;
    }
    public static void main(String[] args) {
        launch(args);
    }
}