Adding flexview capability and colored pointcloud

[Solrac3589]

This PR depends on beta-robots/common_msgs#1 to work.

colored option it is half done but not finished (there is no RGB ensenso yet).

[carlosjoserg]

In general seems ok.

I see a lot of debug prints though, like https://github.com/beta-robots/ensenso_nx/pull/32/files#diff-c543d1f9da91fbe1d6f262ce45837424R212

At least, you might want to wrap them in a macro like:

#ifdef VERBOSE
#define DEBUG_PRINTOUT( m ) std::cout << m
#else
#define DEBUG_PRINTOUT( m )
#endif

And then use it like:

DEBUG_PRINTOUT("inside grab grayscale capturing" << std::endl);

So only when #define VERBOSE is present you will have debug prints.

/cc @andreucm

[andreucm]

yes, adding a VERBOSE def is necessary. Thanks