# Exponential Sine Curve across Points Grid

**URL:** <https://forum.dynamobim.com/t/exponential-sine-curve-across-points-grid/1147>\
**Category:** Packages\
**Created:** [March 3, 2015, 9:28am UTC](https://forum.dynamobim.com/t/exponential-sine-curve-across-points-grid/1147 "2015-03-03T09:28:54Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![Dimitar\_Venkov](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/dimitar_venkov/32/2068_2.png) [@Dimitar\_Venkov](https://forum.dynamobim.com/u/Dimitar_Venkov)\
**Post date:** [March 20, 2015, 8:02am UTC](https://forum.dynamobim.com/t/exponential-sine-curve-across-points-grid/1147/23 "2015-03-20T08:02:42Z")

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A picture is worth a thousand words indeed, Sol 😃

I think what you’re aiming for is the following handkerchief surface:

![Capture1](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex022/uploads/dynamobim/original/2X/c/ca569f827a1ab03144a0edab6d8ce746dc4397f0.jpg)

&nbsp;

Multi-line comments seems to be a tad buggy. Also, I think I need to work on my commenting skills.

Mehmet, you’ve taken DS lacing to a new level! You’ve managed to define a complex parametric surface in just three lines of code! It’s extremely compact. I love it.

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**Author:** ![solamour](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/solamour/32/153516_2.png) [@solamour](https://forum.dynamobim.com/u/solamour)\
**Post date:** [March 20, 2015, 8:08am UTC](https://forum.dynamobim.com/t/exponential-sine-curve-across-points-grid/1147/24 "2015-03-20T08:08:04Z")

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Awesome gentlemen! Many thanks. Very cool stuff and exactly what I was after. Not to mention I learnt a hell of a lot in the process.

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**Author:** ![solamour](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/solamour/32/153516_2.png) [@solamour](https://forum.dynamobim.com/u/solamour)\
**Post date:** [June 5, 2015, 1:00am UTC](https://forum.dynamobim.com/t/exponential-sine-curve-across-points-grid/1147/25 "2015-06-05T01:00:05Z")

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If anyone’s still curious about this thread, I solved the problem in a slightly different manner.

The little bit missing from the definition is simply me populating Revit with a very basic family (Type ‘radius’ of equal width and length, height defined by curve length).

![Sinuous Tower](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex022/uploads/dynamobim/original/2X/5/5e6a8baf3e7f47e22f735086dbc1bb98119cebe1.jpg)

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