Z extrusion from surface

hi,

I am having trouble extruding from a surface, my current solution contours the surface but fails to extrude all the contours. In the image you will see all the contours identified on the surface, however when the result is baked you will see that a bunch of elements are missing... any assistance is greatly appreciated, thanks.

Attachments:

Extrude Z_v01.gh, 5 KB
Screen Shot 2017-08-10 at 7.36.54 pm.png, 1.2 MB

Replies to This Discussion

Permalink Reply by Tim Chen on August 10, 2017 at 6:36pm

I don't think you internalized the surface geometry. I get a blank.

Permalink Reply by craig douglas on August 10, 2017 at 7:31pm

hi tim,

i'm not sure what this means, any chance you could tell me what it is, and how do I fix it?

cheers

Permalink Reply by Tim Chen on August 10, 2017 at 11:28pm

Attach your rhino 3dm file as well. That's the quick fix.

Permalink Reply by craig douglas on August 11, 2017 at 6:38am

hi tim,

thanks much, here it is.

Attachments:

TEst GH 03i.3dm, 15.2 MB
Test GH 03i.gh, 7.8 MB

Permalink Reply by Tim Chen on August 11, 2017 at 8:59am

The problem is that some of the isocurves are not closed. I half-solved the problem by finding the end points of these curves and just drawing a straight line through.

However some isocurves go from one end of the boundary to the next. I don't know how to see which edges of the boundary should be included in the polyline.

Any ideas?

Attachments:

TestGH03i_rev1.gh, 29 KB

Permalink Reply by vhoang on August 11, 2017 at 7:47am

You used Boundary Surfaces to create surfaces from your Contours, the problem is that not all of your Contours are closed so there are less surfaces being created than you expected, thus explaining the "missing" parts.

Permalink Reply by craig douglas on August 11, 2017 at 8:09am

ok, nice pick up, can you suggest a fix please?

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