Definately a tolerance issue. Use the document's absolute tolerance and you will have better results (see attached).
Also, you might want to check the model relative tolerance. 1e-07 is a little tight. 1.0 percent is a little more…"
hi there,i came across a annoying "feature" about the rhino.isPointinSurface() method.Often when I use this function to exclude points from a bunch of points with the help of a closed Cylinder or a Sphere most of the points are processed correctly but some of them remain although they are definitely INSIDE the solid.In the Rhino4-version of the function there was no option for giving a tolerance, in Rhino5 there is but it doesn't matter if I specify a tolerance or not - some of the points won't…See More