X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmathconstants.h;h=2385861ea165d3b3db3a869a6f20ed4ce5398061;hb=742d2aa9bb46bce4f690474fa22f5980e175e55e;hp=78d7d7021f928257ec472db39b8677634d4bc00f;hpb=043ecf4d074909ba2f7f53237962f9eaa72f19c2;p=architektonas diff --git a/src/mathconstants.h b/src/mathconstants.h index 78d7d70..2385861 100644 --- a/src/mathconstants.h +++ b/src/mathconstants.h @@ -1,7 +1,8 @@ +// // Mathematical Constants used by Architektonas // // Part of the Architektonas Project -// (C) 2011 Underground Software +// (C) 2016 Underground Software // See the README and GPLv3 files for licensing and warranty information // // NOTE: Since this has no code associated with it, there is no corresponding @@ -10,10 +11,19 @@ // JLH = James Hammons // // WHO WHEN WHAT -// --- ---------- ------------------------------------------------------------ +// --- ---------- ----------------------------------------------------------- // JLH 04/01/2011 Created this file +// JLH 03/15/2016 Added Tau constants, removed Pi constants (Pi is wrong) // -#define PI 3.14159265358979323846264338327 -#define RADIANS_TO_DEGREES (180.0 / PI) -#define DEGREES_TO_RADIANS (PI / 180.0) +#define TAU 6.28318530717958647692528676655 +#define TAU_1QTR (TAU * 0.25) +#define TAU_2QTR (TAU * 0.50) +#define TAU_3QTR (TAU * 0.75) +#define RADIANS_TO_DEGREES (360.0 / TAU) +#define DEGREES_TO_RADIANS (TAU / 360.0) + +// Convenience definitions +#define HALF_TAU (TAU_2QTR) +#define QTR_TAU (TAU_1QTR) +#define THREE_QTR_TAU (TAU_3QTR)