Freehand drawing

I am new to vvvv. I looked at tutorials and included patches but could not work out how to achieve freehand drawing, say by using mouse for position and middle wheel for line width. I think that Quad could be a candidate for a starting point. I would like eventually animate drawing in 3D space so I need to use Renderer (EX9)…
If some one could point me in the right direction?

hi derber,
this thread:
or this one:
could be a good point to start.