Hi folks. what I want to do is to create a linear series of scissor structure. as the picture below:[images] there are a couple of problems I came acrossed with: the endpoints splits If the whole structure moves in a direction the lines in my script does not become compatc so that the scissor st…

[image] Difficulties with Data Trees Grasshopper Yes, that’s as good a description as any other I’ve heard. I hesitate to mention my own play with scissor structures since you seem to have a good idea and are making progress toward your goals. Still, FYI: [scissors_2…

My problem isn’t that complicated and also not a curved structure, just a simple linear one direction pantograph which I’m going to attach to a pneumatic arm.

[image] DanielPiker: In that case keep it simple - no need for simulation For sure! Yours is much simpler than mine. [scissors_2020Aug30a] scissors_2020Aug30a.gh (20.4 KB)

Thank you Daniel in origami’s simulation is needed, I’m looking forward to focus on learning kangaroo in order to simulate such structures.

Yes, when the problem is simple enough that a simple geometric solution is possible I think it’s usually better to use that, but if this is a test for something more complex where such geometric approaches aren’t obvious then you can simulate it like this: scissor_kangaroo.gh (12.9 KB) The key is …

[image] DanielPiker: The key is the ‘rod’ goal - each arm of the scissor is a polyline with 2 segments, and this goal keeps the 2 segments in a straight line. Fascinating, yet bizarre. Having to supply the two polylines isn’t quite as convenient and parametric as the “simple geometric soluti…

Scissor Structure

Grasshopper Kangaroo

DanielPiker (Daniel Piker) August 30, 2020, 2:30pm 4

In that case keep it simple - no need for simulation
simplescissor.gh (7.7 KB)

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Scissor Structure

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