Inside/Outside Closed Crv

hi all,

can any one help me with the problem?

i need to check if

a number of points is inside (included in)

a number of closed co-planar crvs.

"brep inclusion" (going a solid-based workaround) is a waste of resources here and gets pretty tricky:

http://www.grasshopper3d.com/forum/topics/test-points-for-brep-incl...

"trim inclusion" also doesn't seem to help.

thanks in advance,

best, frank

Replies to This Discussion

Permalink Reply by to] on May 21, 2010 at 9:45am

hi
just use the containment component which his new in 0.7 (flyout curve/analysis)

Permalink Reply by FrankS on May 21, 2010 at 10:09am

ok, thanks, great.

i am still on 0.6. this is agood reason to switch...

frank

Permalink Reply by FrankS on May 22, 2010 at 1:44pm

0.7 is great. thanks david!

i still have a problem with "multiple pts" in "multiple crvs" inclusion.

i attached a screenshot of a definition using the containment component which works fine with a single closed crv as input. i need to check if a number of pts is inside a °variable number of closed crvs°.

can anyone give me a direction on this?

thanks in advance.
frank

Attachments:

InclusionProblem_01.ghx, 117 KB

Permalink Reply by FrankS on May 22, 2010 at 2:06pm

(hopefully) bigger screenshot here

Attachments:

InclusionProblem_01.jpg, 68 KB

Permalink Reply by FrankS on May 25, 2010 at 1:36am

since i am still stuck with this one:
can anyone figrure out a solution for the problem described above?
any hints much appreciated!

david's suggestion in this thread seams to deal with a similar problem. however i do not get it to work. it involves grafting and mass adding ...
http://www.grasshopper3d.com/forum/topics/test-points-for-brep-incl...

problem: the inclusion is only solved for the first of serveral crvs. how can i make the def solve inclusion for all crvs?

thanks in advance,
frank

Permalink Reply by Luis Fraguada on May 25, 2010 at 1:59am

Hello, let the trees to the work... Do not flatten the point tree, send that directly to the containment component. After you make the circles, graft those into a tree.

Attachments:

InclusionProblem_01_edit.ghx, 132 KB

Permalink Reply by Luis Fraguada on May 25, 2010 at 2:05am

hmmm, after some tests it seems to break in certain situations...for example, try to make the circles bigger...

Permalink Reply by FrankS on May 25, 2010 at 7:47am

hi luis,

thanks for the reply.

actually my screenshot shows only a small definition where i tried to isolate the problem + i didn't what rhino geometry involved. in the end i don't mean to use circles and they don't derive from that point grid.
i would need this issue to work with an arbitary amount of points and curves with a unspecific path struture...

BTW: i have got the impression that the "containment" component breaks a bit the logic of "normal" GH components. same seams to be true for "BRep inclusion".

"Solid difference" for example will checks a number of A vs. a number of B, cross-referencing all inputs.

maybe i am missing something here...

cheers,
frank

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