How to scale a surface and get a specific area?

Replies to This Discussion

Permalink Reply by Vicente Soler on April 5, 2012 at 5:29pm

square root it.

Permalink Reply by Mateusz Zwierzycki on April 6, 2012 at 3:00pm

http://en.wikipedia.org/wiki/Square_(geometry)

Permalink Reply by David Rutten on April 6, 2012 at 3:20pm

The 3D scaling factor you want can be computed using the formula

S = (A1 / A0)^0.5

Where S equals the scaling factor, A1 equals the desired area and A0 equals the current area. The "^0.5" bit means "raise to the power of 0.5" which is the same as computing the square-root of the ratio.

Note that the Expression component I'm using isn't available yet in the public build, you'll need to use the F(x) component that has 2 inputs, or of course replace the expression with pure Grasshopper components (Division and SquareRoot in that order).

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Mateusz Zwierzycki on April 6, 2012 at 3:28pm

Awesome change (fx) but can it roll the formula string like panel does ? 

Permalink Reply by David Rutten on April 7, 2012 at 4:31am

At the moment it resizes itself based on the length of the expression.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Daniel Piker on April 6, 2012 at 3:31pm

? looks interesting

Permalink Reply by Vicente Soler on April 6, 2012 at 3:32pm

What I said, square root it.

Permalink Reply by Erick Vásquez on April 6, 2012 at 4:00pm

really thanks I think was distracted.

Permalink Reply by Erick Vásquez on April 6, 2012 at 4:02pm

thanks David awesome what comes!

Permalink Reply by Alpha222 on April 6, 2012 at 11:50pm

This new Function component is cute ! Like it !

Permalink Reply by Marios Tsiliakos on April 7, 2012 at 3:41am

Major spoiler alert in this discussion. don't read it people.. :)