How to visualize data in paraview with fortran

How to visualize data in paraview with fortran

I'm sorry I'm quite new to fortran therefore I don't know if this is out
of question. But I'd like to ask you for help. I wrote a program in
fortran which calculates molecular (basicaly their centers in 3d space -
xyz) movements. I'd like to visualize these data in ParaView, which I'm
capabl of. My programs output is VTK file which I can load into ParaView
and see everything I need clearly. But I'd like to somehow make this
process autonomous.
Basicaly I'd like to do computations and after some steps I'd like to
visualize molecules with ParaaView, take a screenshot from certain angle
save images as png (or any other img format which ParaView supports).
Because of a high number of iterations I can't do this myself, therefore I
thought about incorporating some kind of script into my fortran code or
any other way to make this happen, but I don't even know if this is
possible or how?
I do really hope you can help me I'm in a pinch here, I'm quite new to
fortran I hope I'm not asking for impossible.
I'd like to thank you very much for any help you can provide me with. (I'm
not asking for a prepared script, but for some hint/guide how to do this
if possible, but I'm not against examples either).