[osg-users] osgviewerMFC pick problem

[OpenSceneGraph Users]

hi~I have a box,and click on model's face in osgviewerMFC(osgpick example) 
,but sometime i will get wrong coordinate（most of click are near side）,and 
i do the same operate only in osgviewer ,it works well！ ！！
For Example，sometime i should get 2 coordinates in a perspective view 
because of picking overlap part of two faces,if my pick return just 2 
coodinates,the result is good,but sometime return only 1 ,and the one is 
not top coordinate!
I really confused about this case！Hope your reply~

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