How to scale a surface to a certain wanted surface area?

Grasshopper
1

How to scale a surface to a certain wanted surface area?

Scale surface to certain surface area size 01.gh (8.0 KB)

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Scale%20surface%20to%20certain%20surface%20area%20size%20011441×693 82.1 KB

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Check out Pufferfish, I have a scale to area component which works on planar closed curves, surfaces, and breps (can scale non uniformly as well if you put dif values in the x,y,z)

Capture
Capture.PNG1573×442 149 KB

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Canvas at 22;55;05.png1256×432 59.4 KB

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Jeeeh!

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Arghhhhh… I did not know where the place the V,
Thank you!

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Hi,

Can that be done with scale NU?
The proportions seems to be ok, but the size is worng:

eroor0
eroor01383×723 54.6 KB

file:scaleBox.gh (20.0 KB)

Thanks!

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In this case, you’d better not to use the square root. It’s not an area ratio case.

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Nice! Thanks a lot!

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Also the Pufferfish ones will let you go non uniform.

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Hi- I am a bit stuck and I am sure its an easy fix…with Pufferfish how can I use ‘scale to area’ to scale in one dimension? meaning, without adding a slider. the geometry will grow only in x direction?
pufferfish scale to area.gh (30.1 KB)

rec to wavy
rec to wavy790×932 26.2 KB

wavy to rec
wavy to rec975×1233 37.2 KB

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You didn’t internalize any curves however, the Scale to Area component has input proportions factors for x, y, and z.

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ho no, I am sorry. attaching again .
I tried working with the inputs, but I think I am not understanding something. I want anchor two dimensions and the third one to move to reach the area required (so there shouldn’t actually be a number slider) . similar to scale 1D. Is there a way to do that?

Thank you again

pufferfish scale to area.gh (25.2 KB)

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you could scale by the proportions of desired area. scale factor = (current area/desired area)

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Hi Mark, I am not sure I understand your suggestion.
1.The regular scale by factor- cannot operate as scale 1D (meaning scaling only one curve on in unit x to match the area
2. Scale NU- is not by area
3. scale by area (pufferfish)- cannot be scale scaled 1D

I hope that was clearer
thanks again

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I was going to say something until I noticed this remark from 3 days ago… But since you believe “it’s an easy fix”, I won’t bother.

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Scale nu has 3 inputs, x, y, and z. so scale x by the ratio, which you need to calculate using the area component and the division component, then scale y by 1, and z by 1.

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I don’t understand the sarcasm. Obviously If I am writing this question for three days, I understand its not easy as I thought. I just assumed it is a basic thing that should be possible in gh.

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This method only works if the surface is planar and the surface normal direction is not in the x direction. That is how geometry works.