Hi Marinus,
By issue i meant your challenge to convert line art into a solid fill vector with varying thickness.
The challenge I’m facing is to come up/identify a plugin, or script that can help generate a 3d from 2d drawings: (see image)
edit:
I’ve gone ahead and made a new topic for people to share insights and ideas: 2D to 3D BIM Models - Grasshopper - McNeel Forum