--- Andy Little <andy@servocomm.freeserve.co.uk> wrote:
Regarding the geometry end, it seems to me that the geometry doesnt need to be tied to the particular pqs type. Using Boost.Typeof it should be possible to implement geometric entities that will work with the types in pqs or others if written in terms of Concepts.
I think this is an excellent idea! Now that I think about it, with Boost.Typeof a linear algebra library could be written that's compatible with strongly typed quantities of any kind, including PQS, but completely independent of PQS. You can leave that work to others who are experts in that area, and concentrate on just the dimensional analysis for individual quantities.
I reckon that my best bet is to try to implement vectors, quaternions and matrices in the absolute simplest way possible within PQS [...] I currently view the work more as an experiment to start to answer the question. What happens if we try to implement geometry on strongly typed quantities?
Sounds like a worthwhile experiment. A simple set of operations you could start with might be: vector dot product matrix multiplied by vector matrix multiplied by matrix addition/subtraction These are all straightforward to implement for vectors of any size and would provide enough functionality to test the concept. BTW, Andy, thank you for all the work you've done on PQS and for your persistence in it, even with so many criticisms and suggestions. I think it could turn out to be a really valuable library. -- Leland __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com