Grasshopper

algorithmic modeling for Rhino

Perpendicular Frames along Curves on Surface

Hi guys, 

I'm curious if this is a bug. 

I made a bulging surface and divided this into points. Then I made polylines along the points and with this polylines I created perpendicular frames. I realized the frames are not in the same direction. When I made the frames using interpolate curves it looks fine. Only when they are polylines, perpendicular frames are not aligned same. 


I guess the frames' directions are only different when the created polylines happen to be linear while the others are all 3 dimensional. 

Is there any suggestion to fix this problem? 

Thanks, 

J

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Permalink Reply by peter fotiadis on July 25, 2014 at 12:22am

There's evil things going on with frames (i.e. coordinate systems)

Exploit these test cases (posted "some" time ago)

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Permalink Reply by Jonghoon Im on July 26, 2014 at 1:57am

Thanks Peter!

I'll try your definition.

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