@ikon_ben, have you seen any other full parametric kite design coded in Grasshopper apart from mine?
Like Ben said almost all inflatable designer's are using SurfPlan from David Aberdeen. He is for sure the unsung hero of our sport. The power and ease of use of SurfPlan has allowed designer's a lot of freedom to explore concepts quickly without a lot of manual low level CAD work. The cost of the yearly license is well worth it to the brands using it.
About a year ago, for no good reason other than I had the time available and I really wanted a 'difficult' coding project to tackle I wrote my own parametric kite code for Rhino using Grasshopper. I think all up it took me about two months full time work to get a usable code base (with two full, back to bare screen rewrites). I was completely expecting to run into issues I could not overcome, but no unsolvable problems derailed me.
To date I've had one kite built from it, a 9.0m AR4.0 three strut freeride. I completely expected it not to fly, but with some very minor bridal tuning it turned out to fly better than could have hoped. I've put 30 hours on the kite over the summer.
I've recently updated some of the code and tweaked the design a little, order for MK2 going to the factory shortly.
Wingworks, who is active on this forum has written a similar piece of code in Python using Blender:
http://www.wingworks.de/kite-design/3d- ... -wingcalc/