Excuse me for not beeing more precise.
I do batch automation in SketchUp.
This means I write program in Ruby which do all the necessary things.
I use SketchUp API to do the SketchUp parts of the work,
but I don't have knowledge about Renditioner API to do redering.
I inspect the IDXRenditioner.rb, so I found some methods I can use. But those are not enough to do my work.
Firstly, I cannot understand exactly what you are asking. I shall have a stab at the ruby question though, go to the sketchucation forum and ask in the ruby section and I am pretty sure you will get the advice you will need. http://forums.sketchucation.com/viewforum.php?f=332&sid=a0c5a73fc4565762aaa3e715001df8e5
My question is not about Ruby. It's about Renditioner.
I do not know which version of renditioner you are asking about so specifics about saving will be impossible here, read the manual for v1 and have a look at the pdf files for v2 and you will get your answers there. The pdf files for v2 are located in the help file in your renditioner installation, you will have to navigate your way there I'm afraid as I do not know where you installed it.
When in doubt, rtfm.
PS. "I do not know how to wait for the rendering to complete". I usually make a cup of tea.
I have version 1.1 pdf. But there is nothig to answer my question.
PS: I'll RTFM if you say me where in TFM to R.