Re: [boost] Review Request: QVM (generic Quaternion, Vector and Matrix operations library)

On Fri, Jun 26, 2015 at 12:57 AM, Sam Kellett wrote:

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On Thu, Jun 25, 2015 at 9:35 PM, Michael Marcin wrote:

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I love swizzling although I dislike this particular syntax.

See http://zajo.github.io/boost-qvm/operator_mod_rationale.html. Basically, I can't think of a better alternative.

What about

v['x'] *= 42; v['yxz'] = 42;

1) Character constants containing more than one character are implementation-defined (not portable). 2) The swizzling dispatch must be done at compile-time. You couldn't do this with an int argument to operator[]. 3) operator[] must be a member function, and QVM operations work on user-defined types. You can, of course, define operator[] in your own types in terms of operator% from QVM. So we're stuck with: v%X *= 42; v%YXZ *= 42; -- Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode