Grasshopper

algorithmic modeling for Rhino

Hello.


I am a beginner


I try to generate flaps from a polyline that I extrude with the Z axis.


Then I divide the surfaces, make subdivisions, and take the normal planes of each subdivision ( louver) in their center but the different normal planes have bad orientation.
So of course when I want to rotate all these flaps horizontally in one shot...well I don't have something homogeneous .

Can you tell me what's wrong ?

Thanks in advance for your help and your time

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Hello Samco,

once you get to the evaluate surface you have the planes you need per surface to use for rotation, so you dont need to add a plane surface component, which is the one that outputs inconsistent planes per piece (zoom in to see the planes in viewport y axes are not consistent). You can deconstruct the F output (the planes at the evaluated uv points) and continue with the rotation.

In case evaluate surface does not output similar planes, or you want for some reason to use plane normal component then you can use the align planes component found in vector/plane tab, which will attempt to align the planes to a given initial one, that describes the orientation you are after.

hope this helps

best

alex

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Alex
Sorry for my low level but I just start as you can see!
Also I thank you very much for your quick response.
Your help is really nice and  I carefully study your answer.

oh no worries.

louvers is a nice starting example. since you are just starting i should have added that in list item i am using an -1 index, which is the last item of the list (if wrap is true, meaning the list can be accessed in a circular way). This also works with data trees, which are a collection of lists, like you have per column in your definition. so, had i not flattened (from tree to single list) the tree in list item component, then list item would list every last item from every branch (list) of the tree.

best

alex

When I help someone and that makes me spend time, I like it informs me on his progress.
That's what I do. Thanks again Alex

Best regard


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