Cycloid Gear Library

This is a minimal library for the generation of cycloidical gears.
Some demo functions are included.

**required: OpenSCAD version >= 2015.03 !!**
**MOST CURRENT VERSION HERE:**
https://github.com/mechadense/scad-lib-cyclogearprofiles
(old link) https://github.com/lsuess/scad-lib-cyclogearprofiles

usage: ...
**use // include would execute the demo modules**

To get a crosssection of the desired gear invoke:
**cyclogearprofile(rtooth,nteeth,vpt,verbouse);**
parameters:
rtooth ... radius of gear teeth
nteeth ... number of gear teeth
vtp ... optional parameter -- vertices per tooth -- if left 0 (this is default) OpenSCADs resolution parameters $fa $fs or $fn will be applied.
verbouse ... optional parameter -- If this is set bigger than zero then info about that gear will be reported under the choosen number.

To get a cross section of a rack invoke:
**cyclorackprofile(trackmin,rtooth,nteeth,teethshift0,vpt=0)**
trackmin ... thickne