source: java/main/src/main/java/com/framsticks/visualization/ViewerTest.java @ 84

package com.framsticks.visualization;

import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.ColorCube;
import org.apache.log4j.Logger;

import javax.media.j3d.*;
import javax.swing.*;
import javax.vecmath.*;
import java.awt.*;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;

/**
 * Author: Piotr Śniegowski
 */
@SuppressWarnings("serial")
public class ViewerTest extends JPanel {
        private static final Logger log = Logger.getLogger(ViewerTest.class.getName());

        private SimpleUniverse univ = null;
        private BranchGroup scene = null;

        public BranchGroup createSceneGraph() {
                // Create the root of the branch graph
                BranchGroup objRoot = new BranchGroup();

                // Create the TransformGroup node and initialize it to the
                // identity. Enable the TRANSFORM_WRITE capability so that
                // our behavior code can modify it at run time. Add it to
                // the root of the subgraph.
                TransformGroup objTrans = new TransformGroup();
                objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
                objRoot.addChild(objTrans);

                // Create a simple Shape3D node; add it to the scene graph.
                objTrans.addChild(new ColorCube(0.4));

                // Create a new Behavior object that will perform the
                // desired operation on the specified transform and add
                // it into the scene graph.
                Transform3D yAxis = new Transform3D();
                Alpha rotationAlpha = new Alpha(-1, 4000);

                RotationInterpolator rotator =
                                new RotationInterpolator(rotationAlpha, objTrans, yAxis,
                                                0.0f, (float) Math.PI * 2.0f);
                BoundingSphere bounds =
                                new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
                rotator.setSchedulingBounds(bounds);
                objRoot.addChild(rotator);

                // Have Java 3D perform optimizations on this scene graph.
                objRoot.compile();

                return objRoot;
        }

        private Canvas3D createUniverse() {
                // Get the preferred graphics configuration for the default screen
                GraphicsConfiguration config =
                                SimpleUniverse.getPreferredConfiguration();

                // Create a Canvas3D using the preferred configuration
                final Canvas3D c = new Canvas3D(config) {
                        @Override
                        public void paint(Graphics graphics) {
                                super.paint(graphics);
                                Toolkit.getDefaultToolkit().sync();
                        }

                        @Override
                        public void postRender() {
                                super.postRender();
                                //log.info("postRender()");
                        }
                        @Override
                        public void postSwap() {
                                super.postSwap();
                                //log.info("postSwap()");
                        }
                };


                c.addComponentListener(new ComponentListener() {
                        @Override
                        public void componentResized(ComponentEvent componentEvent) {
                        }

                        @Override
                        public void componentMoved(ComponentEvent componentEvent) {
                        }

                        @Override
                        public void componentShown(ComponentEvent componentEvent) {
                                log.info("shown");
                                c.startRenderer();
                        }

                        @Override
                        public void componentHidden(ComponentEvent componentEvent) {
                                log.info("hidden");
                                c.stopRenderer();
                        }
                });

                // Create simple universe with view branch
                univ = new SimpleUniverse(c);

                // This will move the ViewPlatform back a bit so the
                // objects in the scene can be viewed.
                univ.getViewingPlatform().setNominalViewingTransform();

                // Ensure at least 5 msec per frame (i.e., < 200Hz)
                univ.getViewer().getView().setMinimumFrameCycleTime(16);

                return c;
        }

        public ViewerTest() {

                this.setLayout(new java.awt.BorderLayout());

                this.setPreferredSize(new java.awt.Dimension(250, 250));

                Canvas3D c = createUniverse();
                c.setSize(100, 100);
                this.add(c, java.awt.BorderLayout.CENTER);

                // Create the content branch and add it to the universe
                scene = createSceneGraph();
                univ.addBranchGraph(scene);
        }
}