/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package cube3d;

import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.DepthTest;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.RectangleBuilder;
import javafx.scene.transform.Rotate;
import javafx.scene.transform.Translate;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 * A sample that demonstrates an animated rotation of 3D cubes. When the
 * application runs in standalone mode, the scene must be constructed with
 * the depthBuffer argument set to true, and the root node must have depthTest
 * set to true.
 *
 * @see javafx.scene.transform.Rotate
 * @see javafx.scene.paint.Color
 * @see javafx.scene.shape.RectangleBuilder
 */
public class Cube3D extends Application {

    private Timeline animation;

    private void init(Stage primaryStage) {
        Group root = new Group();
        root.setDepthTest(DepthTest.ENABLE);
        primaryStage.setResizable(false);
        primaryStage.setScene(new Scene(root, 400, 150, true));
        primaryStage.getScene().setCamera(new PerspectiveCamera());
        root.getTransforms().addAll(
            new Translate(400 / 2, 150 / 2),
            new Rotate(180, Rotate.X_AXIS)
        );
        root.getChildren().add(create3dContent());
    }

    public Node create3dContent() {
        Cube c = new Cube(50,Color.RED,1);
        c.rx.setAngle(45);
        c.ry.setAngle(45);
        Cube c2 = new Cube(50,Color.GREEN,1);
        c2.setTranslateX(100);
        c2.rx.setAngle(45);
        c2.ry.setAngle(45);
        Cube c3 = new Cube(50,Color.ORANGE,1);
        c3.setTranslateX(-100);
        c3.rx.setAngle(45);
        c3.ry.setAngle(45);

        animation = new Timeline();
        animation.getKeyFrames().addAll(
                new KeyFrame(Duration.ZERO,
                        new KeyValue(c.ry.angleProperty(), 0d),
                        new KeyValue(c2.rx.angleProperty(), 0d),
                        new KeyValue(c3.rz.angleProperty(), 0d)
                ),
                new KeyFrame(Duration.seconds(1),
                        new KeyValue(c.ry.angleProperty(), 360d),
                        new KeyValue(c2.rx.angleProperty(), 360d),
                        new KeyValue(c3.rz.angleProperty(), 360d)
                ));
        animation.setCycleCount(Animation.INDEFINITE);

        return new Group(c,c2,c3);
    }

    public void play() {
        animation.play();
    }

    @Override public void stop() {
        animation.pause();
    }

    public class Cube extends Group {
        final Rotate rx = new Rotate(0,Rotate.X_AXIS);
        final Rotate ry = new Rotate(0,Rotate.Y_AXIS);
        final Rotate rz = new Rotate(0,Rotate.Z_AXIS);
        public Cube(double size, Color color, double shade) {
            getTransforms().addAll(rz, ry, rx);
            getChildren().addAll(
                RectangleBuilder.create() // back face
                    .width(size).height(size)
                    .fill(color.deriveColor(0.0, 1.0, (1 - 0.5*shade), 1.0))
                    .translateX(-0.5*size)
                    .translateY(-0.5*size)
                    .translateZ(0.5*size)
                    .build(),
                RectangleBuilder.create() // bottom face
                    .width(size).height(size)
                    .fill(color.deriveColor(0.0, 1.0, (1 - 0.4*shade), 1.0))
                    .translateX(-0.5*size)
                    .translateY(0)
                    .rotationAxis(Rotate.X_AXIS)
                    .rotate(90)
                    .build(),
                RectangleBuilder.create() // right face
                    .width(size).height(size)
                    .fill(color.deriveColor(0.0, 1.0, (1 - 0.3*shade), 1.0))
                    .translateX(-1*size)
                    .translateY(-0.5*size)
                    .rotationAxis(Rotate.Y_AXIS)
                    .rotate(90)
                    .build(),
                RectangleBuilder.create() // left face
                    .width(size).height(size)
                    .fill(color.deriveColor(0.0, 1.0, (1 - 0.2*shade), 1.0))
                    .translateX(0)
                    .translateY(-0.5*size)
                    .rotationAxis(Rotate.Y_AXIS)
                    .rotate(90)
                    .build(),
                RectangleBuilder.create() // top face
                    .width(size).height(size)
                    .fill(color.deriveColor(0.0, 1.0, (1 - 0.1*shade), 1.0))
                    .translateX(-0.5*size)
                    .translateY(-1*size)
                    .rotationAxis(Rotate.X_AXIS)
                    .rotate(90)
                    .build(),
                RectangleBuilder.create() // top face
                    .width(size).height(size)
                    .fill(color)
                    .translateX(-0.5*size)
                    .translateY(-0.5*size)
                    .translateZ(-0.5*size)
                    .build()
            );
        }
    }

    @Override public void start(Stage primaryStage) throws Exception {
        init(primaryStage);
        primaryStage.show();
        play();
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX 
     * application. main() serves only as fallback in case the 
     * application can not be launched through deployment artifacts,
     * e.g., in IDEs with limited FX support. NetBeans ignores main().
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
}