public static void main(String[] args) {
        AppSettings s = new AppSettings(true);
        s.setResizable(true);
        TestIssue1798 app = new TestIssue1798();
        app.setSettings(s);
        app.start();
    }
Test case for JME issue #1798: filtered scenes are squeezed by resizable
windows.
<p>
If successful, a cartoon monkey head will be shown, and resizing the window
(using the system's window manager) will not change its shape.
<p>
If unsuccessful, then making the window taller will make the head taller, and
making the window wider will make the head wider.
<p>
Based on the TestCartoonEdge application.
jme3-examples/src/main/java/jme3test/post/TestIssue1798.java