TestSafeCanvas.java

package jme3test.awt;

import com.jme3.app.SimpleApplication;
import com.jme3.material.Material;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.shape.Box;
import com.jme3.system.AppSettings;
import com.jme3.system.JmeCanvasContext;
import java.awt.Canvas;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;

public class TestSafeCanvas extends SimpleApplication {

    public static void main(String[] args) throws InterruptedException{
        AppSettings settings = new AppSettings(true);
        settings.setWidth(640);
        settings.setHeight(480);

        final TestSafeCanvas app = new TestSafeCanvas();
        app.setPauseOnLostFocus(false);
        app.setSettings(settings);
        app.createCanvas();
        app.startCanvas(true);

        JmeCanvasContext context = (JmeCanvasContext) app.getContext();
        Canvas canvas = context.getCanvas();
        canvas.setSize(settings.getWidth(), settings.getHeight());

        

        Thread.sleep(3000);

        JFrame frame = new JFrame("Test");
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                app.stop();
            }
        });
        frame.getContentPane().add(canvas);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        Thread.sleep(3000);

        frame.getContentPane().remove(canvas);

        Thread.sleep(3000);

        frame.getContentPane().add(canvas);
    }

    @Override
    public void simpleInitApp() {
        flyCam.setDragToRotate(true);

        Box b = new Box(1, 1, 1);
        Geometry geom = new Geometry("Box", b);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        mat.setTexture("ColorMap", assetManager.loadTexture("Interface/Logo/Monkey.jpg"));
        geom.setMaterial(mat);
        rootNode.attachChild(geom);
    }
}