[Rock-dev] Types in Ruby, Constructor, initial values
Alexander Duda
Alexander.Duda at dfki.de
Mon May 6 14:22:46 CEST 2013
On 05/06/2013 01:53 PM, Felix Rehrmann wrote:
> Hi,
>
> when instantiating Rock Types in Ruby like
>
> a = Type::TypeToVector::PortConfig (defined like below)
>
> the constructor is not called, so values are uninitialized.
>
> Is there any way, to set initial values for a Rock type instantiated in
> ruby?
Typelib does not support any struct/class methods. You have to manually
initialize it from ruby. You can have a look at Typelib.specialize_model
to add functions to typelib types like for example it is done for
RigidBodyState.
# returns a RigidBodyState with all values initialized to NaN
pp t = Types::Base::RigidBodyState.invalid
#you can also use zero! to initialize everything to zero which is
defined for all types
pp t.zero!
Alex
>
> Felix
>
>
> namespace type_to_vector {
>
> struct PortConfig {
>
> std::string portname; //!< Name the port should have.
> std::string type; //!< Name of the type the port should handle.
> std::string slice; //!< Gives the part of a type that should be
> used in a vector.
> int vectorIdx; //!< The vector to add the port's data to.
> double period; //!< Sample rate in seconds. (0 if unknown or not
> periodic).
> bool useTimeNow; //!< Use time now to stamp unstamped data.
>
> PortConfig() :
> portname(""),
> type(""),
> slice(""),
> vectorIdx(0),
> period(0.0),
> useTimeNow(true) {}
>
> };
> }
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--
Dipl.-Ing. Alexander Duda
Unterwasserrobotik
DFKI Bremen
Robotics Innovation Center
Robert-Hooke-Straße 5
28359 Bremen, Germany
Phone: +49 (0)421 178-456620
Fax: +49 (0)421 178-454150
E-Mail: alexander.duda at dfki.de
Weitere Informationen: http://www.dfki.de/robotik
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