My broad goal is to make these diagrams look more professional by drawing (modeling?) them in Blender and then rendering them via NPR techniques. The qualities that I'm looking for are:
- The drawing is rendered with a "toon" or "hand-drawn" feel.
- The pictures look "polished" and "crisp"
My problem is this: when I snap a bezier curve to the vertices of the mesh, the rendering does one of the following:
- The curve "comes in and out" of the surface (i.e. the curve is puncturing the surface).
- The curve is displaced from the surface and isn't flush.
My question is this: how do I draw an arbitrary smooth curve which is flush on a surface?