Thanks Michael, I do see that it works perfectly on flat surfaces having objects (on a cube for example). It works in the case of curved surfaces also but sometimes resulting, here and there, in some leaps. When you try to draw on the surface of a sphere solid, for example, the drawing lines-curves go beneath the surface in some areas. But anyway, it is ok. Thanks again for the quick answering! : - )

Another question too: in the video below, in its 8.16 m. point, there shows that there is a ‘lighting presets’ scroll under the ‘lighting options’ of the ‘view’ section of the ‘options’ tab. I am not finding it in the v.3 I have. Is it somewhere else or it is taken out in this version?

https://vimeo.com/55672426

Surelly this one...by Dino
http://moi3d.com/forum/messages.php?webtag=MOI&msg=5222.47

but maybe integrated with the Custom UI by Max Smirnov!
http://moi3d.com/forum/index.php?webtag=MOI&msg=6507.241

Thanks Pilou! : - )

Hi Dimitri,

> It works in the case of curved surfaces also but sometimes resulting, here and there, in
> some leaps. When you try to draw on the surface of a sphere solid, for example, the
> drawing lines-curves go beneath the surface in some areas.

Yes, just your "picked points" that are specified in the drawing command will be on the surface - having an entire curve through its entire length result on a surface is a different thing than having just some individual points of a curve on a surface. Except for planar surfaces.

In the future I want to add some kind of drawing mode option for making a "curve on surface" for this kind of thing.

- Michael

'In the future I want to add some kind of drawing mode option for making a "curve on surface" for this kind of thing.'

This is very good news Michael! : - )

Very cool!!