// knob = new MTRectangle(x+innerOffset, y+innerOffset, knobWidth, knobHeight, applet);
knob = new MTEllipse(applet, new Vector3D(0,0,0), knobWidth*0.5f, knobHeight*0.5f);
knob.setFillColor(new MTColor(140, 140, 140, 255));
AbstractComponentProcessor[] inputPs = knob.getInputProcessors();
for (int i = 0; i < inputPs.length; i++) {
AbstractComponentProcessor p = inputPs[i];
if (!(p instanceof DragProcessor)){
knob.unregisterInputProcessor(p);
}
}
knob.removeAllGestureEventListeners(DragProcessor.class);