maybe these approaches for originating 'terrain' or textures might be of interest...

(QGIS mapping software exporting dxf 'lines')
https://www.youtube.com/watch?v=JxCxBREEqG0

(aspire cam - converting raster to 2.5D paths etc)
https://www.youtube.com/watch?v=HUDR5X-Cbjo

This looks 'smart' -- http://topotopo.io/ [ Edit: Dont Bother is not working]

Hi grandpi, the NURBS surface type of geometry that MOI is based on is primarily focused on making smooth surfaces, not rough surfaces with small local details in them like you show there. So this type of thing is not really a good fit with MoI, other software like 3D Coat or ZBrush is much more suited and focused on that kind of shaping.

> Is there a way to create noise on surface after lofting like this Sketchup plugin ?

No, not really for applying it after lofting. Probably the best thing to try would be what Pilou shows above with Max's plugin for distorting the curves before you do the loft.

- Michael

Thanks for your replies !

Merci Pilou je vais essaye ! randomCurves est celui que je cherchais ...

Hi Pierre

You could try heightmap with noised grayscale pictures.
You take your original heightmap and add noise with your favorite photoshop or other.
Simple noise could give you non natural micro bumps but if you use a perlin noise layer you will have more natural results.
Test and you will have perhaps what you want.