BrepExplode & Evaluate Surface

BrepExplode & Evaluate Surface don't seem to work like they should. I'm trying to pinpoint a certain surface face on a larger surface with brep explode and item list. But when I connect Evaluate Surface to the F plug on the BrepExplode component 'evaluate surface' component evaluates points on the whole larger surface not just the specified face. I'm following a tutorial by Arturo Tedeshi 'Paramatetric Architecture' and it seems I'm doing everything right. Any ideas whats wrong?

Thank you

Replies to This Discussion

Permalink Reply by Nikita Troufanov on January 29, 2012 at 3:50pm

O yea and here is a screenshot of the definition

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Screen Shot 2012-01-29 at 5.15.46 AM.png, 918 KB

Permalink Reply by Michael Pryor on January 29, 2012 at 4:08pm

plug f of brep components into list item, call out the face. then plug list item into eval surface. By plugging f dorectly to eval you are evaluating all the faces.

Permalink Reply by Nikita Troufanov on January 29, 2012 at 4:50pm

yea it's still not working. all the items in the list are indexed with 0 and as I move the MD slider around the point still moves along the whole surface. Basically what I'm trying to do is connect four points of each face to a normal vector in the middle of each face generating a space frame. The trouble is that I can only obtain one point/normal along the whole surface instead of a point for each face. Any thoughts?

Permalink Reply by Michael Pryor on January 29, 2012 at 9:17pm

right click s of eval surface and reparameterize.

Permalink Reply by Nikita Troufanov on January 29, 2012 at 9:21pm

oh geez thats it! that did it. i totally forgot to check that. thanks a lot!

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