# Grasshopper curves attractor

**URL:** <https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864>\
**Category:** Grasshopper\
**Tags:** windows, mac, curves\
**Created:** [January 25, 2022, 8:52am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864 "2022-01-25T08:52:36Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 25, 2022, 8:52am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/1 "2022-01-25T08:52:36Z")

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Hello,  
I’m finding a way to make a similar surface as I attached, with the help of a curve attractor.  
I don’t know how to make that.  
Anyone can please help me?

Thank you!

 ![Screenshot 2022-01-25 at 2.16.01 PM](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/7/c/7/7c7370e0172d478be40679ae608c7ed2479fc64a.png)

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**Author:** ![Will\_Wang](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/will_wang/32/513624_2.png) [@Will\_Wang](https://discourse.mcneel.com/u/Will_Wang)\
**Post date:** [January 25, 2022, 3:12pm UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/2 "2022-01-25T15:12:59Z")

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![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/e/1/8/e18617cc50c3d7bee2e39f52d326cff4a0e5a077.jpeg)

one way is to use these curves to create ruled surfaces in-between, and round off the ridges  
some ridges seem to disappear because the “z height” happens to be close to the tangent of the surface

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**Author:** ![zhuangjia777](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/zhuangjia777/32/658636_2.png) [@zhuangjia777](https://discourse.mcneel.com/u/zhuangjia777)\
**Post date:** [January 25, 2022, 4:55pm UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/3 "2022-01-25T16:55:57Z")

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![Rhino_KUmuPi2Iac](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/9/b/2/9b275ecf1f3876f786c22ec14b4e8ce1ea1bb1df.png)  
Do you know this stone panel is carved out bit by bit to this shape, not lift up ridges. It is not formed by real phyical tension, but by hands of craftman. Like the part near low center, you actually don’t know it is pump out or concave. It is a game of shadow and light. Only have top view is not enough information in this case. And this is the reason it is so difficult to model. Because the real geometry of this panel may not like you think in mind.

In short, I think it does look like a curve attractor. but by its nature, the closest way to model this panel is voxel.

[https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/d/8/6/d861770b953a0ed28a3d4697e7048f69410c20ab.mp4](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/d/8/6/d861770b953a0ed28a3d4697e7048f69410c20ab.mp4)

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**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 26, 2022, 3:14am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/4 "2022-01-26T03:14:25Z")

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Hello,  
It’s amazing! thank you so much for responding.  
Can you please let me know, which plugin did you used for the same?  
I want to creat similar.

Thank you!

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**Author:** ![zhuangjia777](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/zhuangjia777/32/658636_2.png) [@zhuangjia777](https://discourse.mcneel.com/u/zhuangjia777)\
**Post date:** [January 26, 2022, 3:48am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/5 "2022-01-26T03:48:05Z")

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This is a plugin that I haven’t released yet. It is still on test. If you want to test it, please message me.

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**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 26, 2022, 3:49am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/6 "2022-01-26T03:49:41Z")

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I’ve dropped the message.

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**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 26, 2022, 4:16am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/7 "2022-01-26T04:16:27Z")

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Hello,  
I hope you have received my message.

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<div class="post-metadata">

**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 27, 2022, 3:53am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/8 "2022-01-27T03:53:46Z")

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Hello, can you please let me know?  
How did you make that with the help of that plugin?

Thank you!

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<div class="post-metadata">

**Author:** ![user2669](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/user2669/32/348640_2.png) [@user2669](https://discourse.mcneel.com/u/user2669)\
**Post date:** [January 27, 2022, 4:39am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/9 "2022-01-27T04:39:40Z")

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![Screenshot 2022-01-25 at 2.16.01 PM](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/7/c/7/7c7370e0172d478be40679ae608c7ed2479fc64a.png)  
Hello,  
I’m finding a way to make a similar surface as I attached, with the help of a curve attractor.  
I don’t know how to make that.  
Anyone can please help me?

> [@Grasshopper curves attractor](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864):
>
> Hello, I’m finding a way to make a similar surface as I attached, with the help of a curve attractor. I don’t know how to make that. Anyone can please help me? Thank you!

Thank you!

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<div class="post-metadata">

**Author:** ![inno](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/inno/32/544036_2.png) [@inno](https://discourse.mcneel.com/u/inno)\
**Post date:** [January 27, 2022, 10:46pm UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/10 "2022-01-27T22:46:55Z")

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the only thing I can think about (and be sure: it does involves a lot of suffering and you won’t get anything smooth) is sweeps

like this:

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/c/9/8/c988758f445efd8021afd4fe614998fdd65ce29a.png)

many of them:

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/3/c/2/3c223dfc358ff07362a483efb58fe9f5cd588ea6.jpeg)

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/1/c/5/1c525b281eed78d0babf60c315eb167026dcb918.jpeg)

but you won’t get any of those nice and smooth transitions that look like an elastic fabric being pulled down (-Z)

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/1/0/f/10f803aefe2802bd710d6d8a821944a2e6e74b02.jpeg)

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<div class="post-metadata">

**Author:** ![ShynnSup](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/shynnsup/32/767220_2.png) [@ShynnSup](https://discourse.mcneel.com/u/ShynnSup)\
**Post date:** [January 28, 2022, 12:01am UTC](https://discourse.mcneel.com/t/grasshopper-curves-attractor/136864/11 "2022-01-28T00:01:25Z")

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But why can’t you porject the control points of a surface to those curves and move them in Z?