Trimmed surface domain

I have a surface that I trimmed out of a larger surface. The original was created by extruding a set of planer curves, exploding it into surfaces and then trimming out the portion of this particular face that I wanted.

Next I am trying to create a matrix of points on the face of that trimmed surface. But the uv domain of the trimmed surface seems to be the original, untrimmed one. The attached Grasshopper gives two examples of where this is leading me astray, in one case I generate the control points for the surface and they clearly are the control points for the original. In the second case I generate the matrix which should have 10 rows and 10 columns of points. But only three columns show because the other points are generated off the edges of the trimmed regions.

So my question is, how do I get my surface to reduce down to the trimmed area??? How do I eliminate the ghost of the original surface??

Thanks!

- Brian -

Replies to This Discussion

Permalink Reply by Vicente Soler on September 19, 2012 at 2:37pm

In Rhino use the ShrinkTrimmedSrf command.

Since you trimmed the surface using isocurves this command will convert your surface into an untrimmed surface with no ghost areas. If you had other trim loops, it would have shrank the hidden areas to a minimum.

Permalink Reply by Nick on September 19, 2012 at 3:15pm