[Rock-dev] weired typelib related error

[Janosch Machowinski]

Hey,
I get an error in case I try to access an uninitialized map of
Base::Spline from ruby:
/home/scotch/rock1.9/base/types_ruby/lib/base/typelib_plugin.rb:50:in 
`initialize': dimension must be strictly positive (RuntimeError)
         from 
/home/scotch/rock1.9/base/types_ruby/lib/base/typelib_plugin.rb:50:in `new'
         from 
/home/scotch/rock1.9/base/types_ruby/lib/base/typelib_plugin.rb:50:in 
`block in <top (required)>'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:2589:in `to_ruby'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1388:in `block in 
each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1379:in `block in 
raw_each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1378:in `times'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1378:in `raw_each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1387:in `each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1421:in `map'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1421:in `block in 
extend_for_custom_convertions'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:2589:in `to_ruby'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1228:in `get_field'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1039:in `block (3 
levels) in custom_convertion_module'
         from 
/home/scotch/rock1.9/install/share/typelib/ruby/corridor_plan.rb:105:in 
`block in split'
         from 
/home/scotch/rock1.9/install/share/typelib/ruby/corridor_plan.rb:97:in 
`times'
         from 
/home/scotch/rock1.9/install/share/typelib/ruby/corridor_plan.rb:97:in 
`split'
         from 
/home/scotch/rock1.9/install/share/typelib/ruby/corridor_plan.rb:136:in 
`block in split_annotation_segments'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1727:in `block in 
each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1726:in `do_each'
         from 
/home/scotch/rock1.9/install/lib/ruby/1.9.1/typelib.rb:1726:in `each'
         from 
/home/scotch/rock1.9/install/share/typelib/ruby/corridor_plan.rb:127:in 
`split_annotation_segments'
         from ./filter_plan:213:in `filter_plan'
         from ./filter_plan:256:in `<main>'

The error message actually comes from the constructor of base::SplineBase.
The give 'value' parameter to 
/home/scotch/rock1.9/base/types_ruby/lib/base/typelib_plugin.rb:50
is :
{
   geometric_resolution=0.0,
   dimension=0,
   curve_order=0,
   kind=:DEGENERATE,
   knots=[

   ],
   vertices=[

   ]}

The problem is that dimension is zero. My problem now is that I have no idea
who generates the 'value' and why it is non valid.
As a workaround I just force dimension to one in typelib_plugin.rb which 
works,
but is obviously the wrong fix.
Any ideas ?
     Janosch


-- 
  Dipl. Inf. Janosch Machowinski
  SAR-&  Sicherheitsrobotik

  DFKI Bremen
  Robotics Innovation Center
  Robert-Hooke-Straße 5
  28359 Bremen, Germany

  Phone: +49 (0)421 178 45-6614
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  E-Mail: robotik at dfki.de

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