@Edent Yes it is!

"Det var designer Rainer Jucker som bisto Oslo Byes Vel i å tilpasse Piet Heins superellipse til bruk for skiltformål i 1989/90. Bruken ble avklart med Piet Hein, og Oslo Byes vel har fått bekreftet sin enerett i 2015 fra Piet Hein AS til å bruke superellipsen til denne type skilt i Norge. Piet Heins superellipse er patentbeskyttet i Norge siden 1992 (og i en lang rekke land omkring i verden)."

G Translate: "It was designer Rainer Jucker who assisted Oslo Byes Vel in adapting Piet Hein's superellipse for use for sign purposes in 1989/90. The use was clarified with Piet Hein, and Oslo Byes Vel has had its exclusive right confirmed in 2015 by Piet Hein AS to use the superellipse for this type of sign in Norway. Piet Hein's superellipse has been patented in Norway since 1992 (and in a large number of countries around the world)."

#superellipse #PietHein #norskTut

https://oslobyleksikon.no/side/Blå_skilt

Blå skilt – Oslo byleksikon

#Development #Launches
CSS corner-shape superellipse() generator · An online tool for shaping custom squircles https://ilo.im/166c8s

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#Generator #Shapes #Superellipse #Squircle #Design #WebDesign #WebDev #Frontend #CSS

CSS corner-shape superellipse() generator

A CSS corner-shape generator for the superellipse() function. Create your own corner shape with the superellipse() function and copy the code to your project.

What is the area of a Squircle?

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The Lamé curve, also called superellipse, is described by the following equation.
\[\left|\frac{x}{a}\right|^n\!\! + \left|\frac{y}{b}\right|^n\! = 1\]

In the polar coordinate system,
\[r=\left(\left|\frac{\cos(\theta)}{a}\right|^n\!\! + \left|\frac{\sin(\theta)}{b}\right|^n\!\right)^{-1/n}\]

#Superellipse #LameCurve