Martin Landa wrote: > Hi all, > > when developing wxNviz I am facing to the strange problem with ctypes. > > Nviz_get_exag_height() [1] returns correct values. > > D1/1: Nviz_get_exag_height(): value = 805.696899 min = -2944.302979 > max = 4555.696777 > > SetViewDefault() [2] which is calling Nviz_get_exag_height() gets > incorrect values. > > GUI D1/1: Nviz::SetViewDefault(): hdef=2.000000, hmin=0.000000, > hmax=36893488147419103232.000000 > > Any idea what can be wrong? > > Thanks, Martin > > [1] http://trac.osgeo.org/grass/browser/grass/trunk/lib/nviz/exag.c#L63 > [2] > http://trac.osgeo.org/grass/browser/grass/trunk/gui/wxpython/gui_modules/wxnviz.py#L95
Just a wild guess, try in wxnviz.py c_double() instead of c_float() because Nviz_get_exag_height() wants double pointers, not float pointers (confusing: python doc says python float = C double). BTW, I get a number of compile errors in trunk/gui/wxpython/nviz/change_view.cpp about type conversions. In nviz.h, one error about too many arguments: include/grass/nviz.h:134: error: too many arguments to function ‘int Nviz_set_viewpoint_twist(int)’ No changes in my local copy, updated 1 hour ago. Maybe this is pointing into the right direction, Markus M _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
