bildsoe,

This would be a highly non-scientific suggestion, but could you
(somehow...) batch the number of intersections into smaller chunks of
say 100 to 200 intersections at a time?  I don't know if that would
improve the overall performance, or be feasible in your case, but that
always seems to make things go quicker in Rhino/GH.

0.02

-taz

On Apr 20, 4:04 pm, bildsoe <[email protected]> wrote:
> Thank you for the replies.
>
> I think what phildavies is referring to is the disable redraw in
> Rhinoscript, as you said visose. It is however important for the
> project that it is done in Grasshopper.
>
> I tried both RhUtil.RhinoCurveBrepIntersect and using the
> IntersectSurface method on an OnLine. The 40 sec result was for the
> RhUtil.RhinoCurveBrepIntersect and the IntersectSurface method took
> between 200-300 msec depending on how i defined the domain of the
> OnLine.
>
> So i'm looking for alternatives. I thought about manually implementing
> some sort of intersecting mechanism, i found a paper on a method
> called "pruning" i think, but this is way over my head, and i don't
> even know if the results will be better than using the ones mentioned
> above.
>
> /Thomas
>
> On Apr 20, 5:10 pm, visose <[email protected]> wrote:
>
> > > However, I have found that it runs almost
> > > instantly if I minimize rhino after I start the script.
>
> > Have you tried disabling redraw?
>
> > You can also create intersections between curves and surfaces in
> > vb.net.
> > Here's one method using 
> > "RhUtil":http://en.wiki.mcneel.com/default.aspx/McNeel/IntersectCommandVB
>
> > Another method is using the member function ".IntersectSurface" for
> > OnLine or OnCurve.
> > Here's an example using ".IntersectCurve", which is very 
> > similar:http://en.wiki.mcneel.com/default.aspx/McNeel/SdkIntersectCurves
>
> > As i understand it, the first method uses the rhino intersect and the
> > second method uses openurbs.
>
> > On Apr 20, 4:29 pm, phildavis17 <[email protected]> wrote:
>
> > > I have been using a rhino script to do the same thing, but with meshes
> > > rather than surfaces.  It seems to take roughly the same amount of
> > > time that you describe.  However, I have found that it runs almost
> > > instantly if I minimize rhino after I start the script.  I don't know
> > > why this is the case, and I don't know how implementable this would be
> > > for a script in GH, but I'd give it a shot.- Hide quoted text -
>
> > - Show quoted text -

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