Going on grasping the data structures...
> > - Point example: a point doesn't have nodes but have a line (P_LINE), > with type GV_POINT. > It's enough for me to get confused :) > A P_LINE structure has a void * topo opaque element [2], which will point > to the relative topology structure depending on the type. In case of a > G_POINT type, what is the topology structure attached to the topo pointer? > Ok, as I supposed the topo pointer is NULL for points. > > - Line example: two nodes with type GV_LINE. A P_NODE doesn't have a type > [3], so how can it be... a GV_LINE? :( > Sorry, this is clear now. The type is referring to the lines attached to the node. > > I'm missing something. Could you help to understand it? > Thanks a lot, > giovanni > > > [1] http://grass.osgeo.org/programming7/vlibTopology.html#vlibTopoExamples > [2] http://grass.osgeo.org/programming7/structP__line.html > [3] http://grass.osgeo.org/programming7/structP__node.html > > -- > Giovanni Allegri > http://about.me/giovanniallegri > blog: http://blog.spaziogis.it > GEO+ geomatica in Italia http://bit.ly/GEOplus > -- Giovanni Allegri http://about.me/giovanniallegri blog: http://blog.spaziogis.it GEO+ geomatica in Italia http://bit.ly/GEOplus
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