Overlapping field lines, minimum distance between elements

Grasshopper
#1

Hi there,

I’m trying to create ‘extruded’ version of Tyler Hobbs flow lines drawings that could be built from some kind of sheet material like MDF/ metal, etc…

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1b

Tyler gives very detailed description of how to do it but it’s all done with coding. Flow Fields — Tyler Hobbs

https://tylerxhobbs.com/essays/2020/flow-fields

As I’m not familiar with Phyton I was trying to achieve similar effect with grasshopper components.

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I’ve managed to replace long curvy flow lines with short rectangles (20mm long by 4mm thick) which can be extruded in Z direction but there are few other issues I need to resolve:

  1. Overlapping of elements – as I’m planning to laser cut the flaps from plywood or plexiglass I can’t have any overlapping elements.
  2. Is there a way of specifying min distance between two elements so that it’s possible to laser cut the holes.

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  1. It’s probably too much, but I was thinking that maybe it would also be possible to have various flap lengths depending on curvature. Say whenever there is a sharp turn and shorter flaps would be needed, we could have 20-40mm flaps (blue ones), than red ones and for longer straight lines flaps could go up to 70-100mm in length (yellow ones) …

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Thanks in advance for all your help.

fields_min distance.3dm (35.3 KB)

#3

Thank you so much - I’ll play with it over the next few days. Hopefully with your script I’ll be able to get the result I was after.

#4

No problem it could also be useful for me. I have a new version with oversampling, because by default I transform each curve to a polyline with points every “distance by offset”, with oversampling it become a polyline with points every “(distance by offset)/oversampling”. It could be also possible to have 2 distance depending on the direction between 2 curves, parallel or perpendicular …

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3 Likes
#5

I would also like to use @laurent_delrieu’s script to remove the lines that are too close to each other, from a set of Principal Stress Lines that are obtained with the Karamba plugin (3.7.13: Line Results on Shells - Karamba3D 2.2.0).

Could you please share with me the Grasshopper script you created @laurent_delrieu? I can’t see it in this thread. I would use it for a university assignment.

In advance, thanks for your attention!

#6

@laurent_delrieu what is the last picture in your previous post ^ ?
Seems like a sort of telescope… ?

#7

Yes it is