Hi Cedric, hmm for some reason the post of Guy wasn't added to the right thread in the maillist ( http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2009-March/025337.html ) I tried out his suggestion and got something like a self-deleting callback working (Demo file is attached). I just need to figure out how to measure the time between the callback calls. For now it just increments the 'time' value with a fixed number. It would ofcourse be nicer if I could use an exciting class that handles the scheduling/timeline.
About your request, I do not know how to create a stacktrace here with Visual Studio 2005, but that would require the debug libraries of OSG right? I could try stepping through the code with the debugger later this week and see where it locks up/crashes. I also noticed that there are some other issues with the (animation?) demos. After building the OSG 2.9.1 package (svn), I tried out a few of the animation demos. Running the demos is not a problem, but if you try to close them, it usually result in a crash. I'm not sure if its the osgAnimation part thats causing it or the viewer. Kind regards, - Laurence P.S.: Sorry about the previous reply, I made a mistake while attaching the file... ;\ -----Original Message----- From: Cedric Pinson [mailto:[email protected]] Sent: Mon 3/23/2009 4:27 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Animating vertices in a Geode Hi Laurence, Before i dig into can you give the stacktrace to have an idea where it crashes ? Cheers, Cedric Laurence Muller wrote: > Hi Cedric, > > I tried to create a simple project based on the 'osganimationmorph' > demo as Robert Osfield suggested. > > Instead of loading the geometries from a *.osg file, I define two new > geometries (both quads but on a different position). These geometries > are added as a drawable to the MorphGeometry. > However, for some reason OSG doesn't allows me to swap the old geom0 > and geom1 geometry objects with the ones I create. The application > crashes when you try to run it. > > Any suggestions? > > Kind regards, > - Laurence > > > Cedric Pinson wrote: >> <div class="moz-text-flowed" style="font-family: -moz-fixed">Hi >> Laurence, >> >> You can easily do it with morphgeometry: >> - define two geometry with morphgeometry >> - use an custom update callback that use an ease motion to control >> the ratio of geometry to use >> >> Would be great to make an example with it, it will help others users. >> >> Cheers, >> Cedric >> >> Laurence Muller wrote: >>> Hi, >>> >>> In the application I am working on, I am trying to create a smooth >>> (transition) animation on the vertices inside an object. >>> >>> Example: >>> I have included an illustration to make my problem a bit more clear. >>> The current scene contains one geode with a geometry attached. >>> The geometry is filled with 7 quads (4 vertices per quad) and is >>> illustrated as red dots in the picture. (The 'edges' are stored in a >>> separate geode) >>> >>> The application allows users to select a specific layout (radial, >>> force based, etc) for the quads. In the current implementation this >>> change happens immediately. >>> (It updates the vertex array with new values and uses the dirty() >>> call on the vertex array). >>> >>> On the OSG wiki page I found some information about animating >>> objects in the scene graph. >>> http://www.openscenegraph.org/projects/osg/wiki/Community/NodeKits/osgAnimation >>> >>> >>> http://www.robertpenner.com/easing/easing_demo.html >>> >>> However, it seems like this will only work on geode level (by >>> modifying the Matrix or PositionAttitudeTransformation). >>> Another problem with this method is that it seems that you need to >>> create a predefined animation. >>> >>> In my case the new position of a vertex will depend on the current >>> position (and the animation only needs to be used once). >>> >>> Question: >>> - Is there a way to use the osgAnimation functions on the vertex >>> array and is it possible to use it with the transition methods from >>> the EaseMotion demo? >>> >>> Kind regards, >>> - Laurence >>> >>> ------------------------------------------ >>> Laurence Muller >>> Website/Blog/Portfolio: >>> http://www.multigesture.net/ >>> >>> >>> ------------------------------------------------------------------------ >>> >>> >>> ------------------------------------------------------------------------ >>> >>> >>> _______________________________________________ >>> 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 -- +33 (0) 6 63 20 03 56 Cedric Pinson mailto:[email protected] http://www.plopbyte.net
<<winmail.dat>>
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