Change True to False and False to True

Replies to This Discussion

Permalink Reply by David Rutten on February 4, 2013 at 11:52am

You can use the Not component, it inverts boolean values.

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David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Hannes Löschke on February 4, 2013 at 12:27pm

I'm not 100% sure but it looks like all boolean parameters have an "invert" option.

Permalink Reply by Robert Megel on February 4, 2013 at 1:03pm

there occurred a new problem. If i want to test multiple Breps for inclusion it does not work

it works only for one Brep. Grafting the geometry component doesn't work also.

Permalink Reply by Hannes Löschke on February 4, 2013 at 2:11pm

There's some more complex thinking involved.

For each point you need to check for containment in one of the BReps.

So we graft the points and get a list of booleans. If one of the Breps contains the point, it will return true, all others return false.

We need to combine all booleans to get one boolean that indicates "insied at least one Brep". Here's the trick: a boolean false converts to integer 0, true is 1. Now if we add up all booleans and all were false, the result is still 0, which converts back to false. If there were one or more trues, the result will be larger than 0, which conveniently converts back to true...

Attachments:

• cull_contained_points_multiple_breps.gh, 3 KB

Permalink Reply by Robert Megel on February 5, 2013 at 6:49am

This is tricky, though. I think i wouldn't get it at my own. Thank you very much.

Permalink Reply by Michael Pryor on February 5, 2013 at 8:03am

But what about just using the multiple inclusion component, It also will maintain original tree structure.