Hi Sonya, it is in Enviro.cpp there, see function -
void Enviro::SetWindowBox(const IPoint2 &p1, const IPoint2 &p2) and also look at track of mouse movements see for MM_SELECTBOX in that file. basically the approach is to render quad ( with border or without ), keep track of mouse and resize this quad accordingly rubber band is based on common approach ( you might look for C++ rubber bands in google ), and only osg one is to appropriately render selection quad, other tricks are non osg related. Regards Sergey On Wed, Jul 2, 2014 at 1:32 PM, Sonya Blade <[email protected]> wrote: > Hi Sergey, > > It really is very hard to locate the code portion where it implements the > rubber > drawing, I'm paving my way with osgHUD example to create the rubber > banding. > > Your comments will be appreciated, > > Regards, > ------------------------------ > Date: Wed, 2 Jul 2014 11:03:47 +0400 > From: [email protected] > To: [email protected] > Subject: Re: [osg-users] Rubber window for multiple selection > > > Hi Sonya, > > if I'm not mistaken Enviro in vtp ( osg based app ) has rubber band > implemented > > https://code.google.com/p/vtp/ > > Regards > Sergey > > > On Wed, Jul 2, 2014 at 10:19 AM, Sonya Blade <[email protected]> > wrote: > > Dear All, > > Mainly I have 2 questions, both are to achieve the comprehensive selection > task in OSG. > > #1 - How to draw a rectangle, polygonal, circle, lasso etc.. selection > rubber? > #2 - How to configure OSG to implement that selection defined at the first > step? > > For selection part OSG Beginners book suggest to use > osgUtil::PolytopeIntersector > for regional selection, > but doesn't give any clue on how to draw the rubber or is it comes as an > intrinsic > feature of > sgUtil::PolytopeIntersector when you create it with WINDOW parameter set > on. > > I also studied the osgkeyboardmouse.cpp example, but I couldn't find any > visible difference when I switch > from LineSegmentInteresect to PolytopeIntersector, while I was expecting > to see the HUD window rubber > to be drawn and objects falling into that rectangle to be selected. > > Your guidance will be appreciated! > > Regards, > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > _______________________________________________ osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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