Grasshopper

algorithmic modeling for Rhino

BBX - Divide Curve - Vector Direction Problem

Hi -- I am solving an intersection event between a referenced Brep and parallel planar surfaces. I then divide the curves from the BBX to get the tangent vectors at each point. The problem that I'm having is that the vectors at the points on the top-most curve are pointing in the opposite direction from all of the other vectors, which looks like this:

If I adjust my 'Distance from Top/Bottom' slider, the upper curve moves down in z, becomes larger, and the vectors reverse

However, I want it so that all of the vectors point in the same direction at all times.

Does anybody know why the top vectors are being reversed, and how I can fix it so that does not happen?

thanks

-Bret

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Permalink Reply by Chris Tietjen on December 12, 2012 at 6:06pm

The Curve Input to the Flip component doesn't need to be flattened.

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Permalink Reply by Bret Vanderhyden on December 12, 2012 at 6:26pm

awesome, thanks

Permalink Reply by dingenis on December 12, 2012 at 7:34pm

hi bret,

before loading the model as brep

commands in rdm

     explode>

                    >make uniform

                                            >join

grt

dingenis

 

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