Hey Taz, thanks so much I have been out of the loop. Just tried to recreate your screengrab, but it didn't work in the end for me...I wonder if the way the original triangular curves are created matters...I posted the definition file here: http://grasshopper3d.googlegroups.com/web/gbf-mesh-triangulation-01.ghx?gda=W-u2Tk8AAACHnAhpAbFiwGExyoDUnoJs1FhCEOEBGX2AscXtQ7DJrz-kx1JsziHiZe-yYarTnUK6x1hTEeCb--WE8O6oAEdqnHMhSp_qzSgvndaTPyHVdA&gsc=hvqvXAsAAABAQHyKqPE-Un_VuKEdY7TR
thanks again. this is great
