throws IOException {
// setup the Renderer and the controller 'model'
if (this.renderer == null) {
this.renderer = new Renderer(makeGenerators(chemModel),
makeReactionGenerators(), new AWTFontManager());
// any specific rendering settings defaults that overwrite user settings should go here
//this.renderer.getRenderer2DModel().setShowEndCarbons(false);
//this.renderer.getRenderer2DModel().setShowAromaticity(false);
}
this.setFitToScreen(fitToScreen);