BOOLEAN DIFFERANCE ERROR !!!!!!!

hi all,

i try to boolean difference 2 triangulars in grasshopper ( i'm using 0.6.0059) but i have some problem. plz show me how to solve this problem

i also tried with rectangle ,hexagon......, it worked ok

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Permalink Reply by Luis Fraguada on June 30, 2010 at 11:33pm

this happens in Rhino as well.

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Permalink Reply by ĐỒNG VIẾT NGỌC BẢO on June 30, 2010 at 11:41pm

that's right ! this happens in rhino as well. is it an error of rhino 4 sr7?????

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Permalink Reply by David Wood on July 1, 2010 at 4:11am

Do you have a clear intersection between your boolean objects? - eliminating the obvious...

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Permalink Reply by ĐỒNG VIẾT NGỌC BẢO on July 1, 2010 at 4:51am

yes, i do

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Permalink Reply by David Wood on July 1, 2010 at 9:18am

Ok, next on the list would be to check the normal directions of all your components... I've had this problem before too.

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Permalink Reply by Jacek Markusiewicz on July 1, 2010 at 6:27am

if the surfaces are co-planar it's much more efficient to first operate on curves only before making the surfaces. You can use Boolean Region Difference. Works much better, but make sure to define the operation plane for each couple of curves. (eg. using curve panarity analysis component)

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Permalink Reply by Tobias Schwinn on July 1, 2010 at 7:33am

It might just be a display problem. Maybe try the following:

In Rhino under Tools -> Options -> Mesh set the render mesh quality to "smooth & slower". Let me now if this makes a difference.

T

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Permalink Reply by Casper Le Fèvre on July 2, 2010 at 3:30am

Hi, I had a similar problem. Tried everything from creating new curves from the edges to working in construction planes etc. and finally mailed techsupport. Their solution was to set the meshquality to custom. Explanation was that the mesher in Rhino wasn't always as robust as it should be.

Best regards, Casper

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Permalink Reply by ĐỒNG VIẾT NGỌC BẢO on July 3, 2010 at 9:21pm

hi Casper!
thank you very much ! it worked ok !^^
thanks again

best regards, blak

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Permalink Reply by ĐỒNG VIẾT NGỌC BẢO on July 3, 2010 at 9:32pm

hi Tobia Schwinn!
thanks for your comment. i setted the render mesh quality to "smooth & slower" ....nothing changed but set to "custom" it worked ok ^^

best regards, [blak]