Re: [csswg-drafts] [css-values] Radians considered useless without π

Registering a vote for the `constant(pi)` notation, or `env(pi)` based on the resolution to

Pi isn't an angle unit, it's a numerical constant. The angle unit is `rad`.  Yes, serious mathematics doesn't use a unit for radians at all (in dimensional analysis, a radian is an angle measured as the ratio between the length of the arc and the length of the radius, so the units cancel out and you're left with a pure number). But CSS has a `rad` unit, and distinguishes between angles and numbers everywhere. So let's stick with that.

I don't mind the idea of a simple constant `pi` keyword within `calc()`.  But since (I think) there is now agreement on having a function for accessing system constants, might as well use it.

PS, I'd love to have other math constants, like e or especially √2 available in CSS for Shapes and Transforms and so on. All the [JavaScript `Math` constants](

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Received on Tuesday, 26 September 2017 02:52:20 UTC