Hi,
 I would like to draw using Processing commands programmatically when I want to rather than automatically when "draw()" method is called synchronously by Processing engine. For example:

  PApplet engine = new PApplet();

  // Do something
  engine.rect(...);
  engine.line(...);
  ...

So in the above, I get to choose when I want to draw in the PApplet without using "draw()".

Thanks in advance for any help.