Re: [boost] Preliminary review request for (Boost) QVM

Subject: Re: [boost] Preliminary review request for (Boost) QVM
From: Vicente Botet (vicente.botet_at_[hidden])
Date: 2011-02-08 15:29:54

Emil Dotchevski-3 wrote:
> 
> On Tue, Feb 8, 2011 at 9:47 AM, Vicente Botet <vicente.botet_at_[hidden]>
> wrote:
>> Emil Dotchevski-3 wrote:
>> BTW, I guess that the Dim in quat is 4
>>
>> Â  Â  Â  Â struct quat
>> Â  Â  Â  Â {
>> Â  Â  Â  Â  Â  Â T a[Dim];
> 
> I'm not sure I understand the question, but v_traits<> defines Dim,
> q_traits<> does not.
> 

Here is what I see in
http://revergestudios.com/boost-qvm/quaternion_vector_and_matrix_types_reference.html

Best,
Vicente

namespace boost
{
    namespace qvm
    {
        //*** Matrix and vector types ***
        
        template <class T>
        struct quat
        {
            T a[Dim];  /////////////////////////////////////////
        
            template <class R>
            operator R() const
            {
                R r;
                assign(r,*this);
                return r;
            }
        };
        
        template <class Quaternion>
        struct q_traits;
        
        template <class T>
        struct q_traits< quat<T> >
        {
            typedef T scalar_type;
        
            template <int I> static scalar_type r( quat<T> const & x ) {
return x.a[I]; }
            template <int I> static scalar_type & w( quat<T> & x ) { return
x.a[I]; }
        };        

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