Hi David, thanks for replying! I got the Cornu Spiral to work pretty well in this example: http://thegeometryofbending.blogspot.com/2008/11/cornu-spiral-in-grasshopper.html What I'm looking for is a more easy way of controlling the rate of change. It may be as easy as supplying a list of numbers to a VB script.
Is it correct that there is (yet) no matrix function to access a specific item in list within a script? If not how can I cycle through a list (which is an input to a script) inside the script? I hope this made sence. Thanks! Mårten On 26 Feb, 19:48, David Rutten <[email protected]> wrote: > Hi Mårten, > > "bend the other way" is fine and dandy in 2D, but it's not very well > defined in 3D. So be careful there. > > I think the arc approach would be the best one, and you're probably > quite correct and it will be tricky. I once tried to create a > Fibonacci spiral, but couldn't get it to work with a variable number > of segments. > > -- > David Rutten > [email protected] > Robert McNeel & Associates > > On Feb 26, 7:36 pm, Mårten <[email protected]> wrote: > > > > > Dear Grasshopper Group. > > > I would like to create a "Curve by Curvature", defined either as a > > list of numbers or with some kind of Law Curve that could be > > interactively changed. Any thoughts on how I could do this? > > This page describes Curvature pretty well I > > think:http://www.bio.unc.edu/faculty/harris/Courses/biol166/curvature.html > > > For example, if it was a series like "1,2,3,4,5,6,7,8,9,10,11..." and > > so on, the resulting curve would be a Cornu Spiral. > > > I suppose one way of doing it is to connect a number of arcs with > > different radius according to the local curvature, but it seems a > > little tricky. Is there a better way? > > > If the curvature was negative, the curve would bend the other way. > > > Many thanks! > > > Mårten > > ------------------------------------------------------------------http://thegeometryofbending.blogspot.com/- > > Dölj citerad text - > > - Visa citerad text -
