Dear Rhino/Grasshopper developers thanks for Rhino 6, many useful improvements, render, Rhinocommon functions … but there is an old subject Polyline Offset see this thread :
Are there some news about Polyline offset ?
I know Clipper is a good solution for Grasshopper and Rhino. Update : @pascal it is not a Grasshopper question more a Rhino core function. There is a reliability problem with offset Polyline. It doesn’t work on some the cells which are simple polygon (see the picture).
The same as in Grasshopper, I used Rhino 6 and offset multiple
Is there a good way to offset curves that contains line and arc segments?
The issue is that clipper offsets only polylines and arcs are represented as many points.
The CNC I am using does not like many points, and I would like to have arcs and lines as a tool-path.
Is there any way to offset this polycurve with a good line-arc curve?
Well … since all my stuff is strictly internal (CNC routing and the likes) the only thing that I can do is to provide some indicative help in case that you want to try to write a C# that does that (Liu’s paper attached above should be your quide).
Ok, I am trying to make offsets in the curves that overlap in the border of the piece, on the undercuts. Any clue on this would be very nice. You already helped me in another post, but it was for a different situation of offsets, many thanks. No problem with C#, I am far for been an expert, but I wil try.
Yes it is possible. You can do that
Use Clipper
Make a small script that takes a polyline and extract arc or line.
I did that, and if tolerance for converting polyline to arcs and lines is more than 2 or 3 it works :
It’s time to start preparing for the 10 year jubileum of the original topic on the grasshopper forum next year.
Who brings the drinks? Who brings the party hats? Can anyone take care of making a photoalbum with a collection of offset issues?
Let’s set it off.
It’s time to start preparing for the 10 year jubileum of the original topic on the grasshopper forum next year.