c++ & boost porting

[MadMan2k]

Im currently trying to build an application written for an older version of boost, where uniform_real was defined like this:
http://www-eleves-isia.cma.fr/documentation/BoostDoc/boost_1_29_0/libs/random/random-distributions.html#uniform_real

the new API is this:
http://www.boost.org/libs/random/random-distributions.html#uniform_real

the code snippet is:

boost::uniform_real< rcss::random::DefaultRNG > dir( rcss::random::DefaultRNG::instance(),
-M_PI, +M_PI );
diff = Polar2PVector( post.r, dir() );

I changed it like this:


boost::uniform_real<> dir( -M_PI, +M_PI );
diff = Polar2PVector( post.r, dir(rcss::random::DefaultRNG::instance()) );

does it still do the same? I dont really understnand the c++ template syntax...

[Mirrorball]

This example is all you need to understand (it's from the official documentation; it took me awhile to understand it too). Copy it and change what you need:



boost::mt19937 rng; // the generator
boost::uniform_int<> six(1,6); // the distribution (an int from 1 to 6)
boost::variate_generator<boost::mt19937&, boost::uniform_int<> > die(rng, six); // create a callable object
int x = die(); // x will be an int from 1 to 6
Here is what I think you are trying to do:


boost::uniform_real<> distribution( -M_PI, +M_PI );
boost::variate_generator<boost::mt19937&, boost::uniform_real<> > dir(rcss::random::defaultRNG::instance(), distribution);
diff = Polar2PVector( post.r, dir() );
The part in bold depends on what generator you are using.