> I try since over ten, 15 years to learn using modellers, but i find them
> way too hard to learn. It is much easier for me, to write out of my mind
> the coordinate numbers. Seeing all these numbers and functions, I can
> easily imagine the scene. Sounds strange, but that's me. Can't change.

Have you ever tried to drive a modeller from a scripting language? You 
can write Python scripts to create geometry in Blender, OpenSCAD is 
exclusively driven from scripts, and FreeCAD also allows you to drive it 
from Python scripts.

Another alternative maybe worth considering, if you are after 
animations, is to write a script to drive the GPU in your machine. You 
can do some pretty complex stuff in realtime (or near realtime) on 
modern GPUs. For examples look up "shadertoy".

 > Parsing takes over 10 minutes, rendering takes more than an entire night
 > -for ONE frame!

Have you looked down every avenue to optimise the scene? There are 
usually a lot of shortcuts and tricks that work to speed up complex scenes.

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