Triangle Mesh rotating towards and along a curve

A triangle mesh rotates along the edge that is closest to the curve hence "growing" towards it. Its colour changes as according to the curve's t-value to which it is closest. It stops when reaching the end of the curve. Developed for the Grasshopper Simply Rhino class with Grasshopper and Hoopsnake. More info: http://arthurmani.com/advanced-workshop-with-simply-rhino/