A built-in GLSL floating-point constant for
3pi/2.Example
// GLSL declaration const float czm_threePiOver2 = ...; // Example float pi = (2.0 / 3.0) * czm_threePiOver2;
3pi/2.// GLSL declaration const float czm_threePiOver2 = ...; // Example float pi = (2.0 / 3.0) * czm_threePiOver2;