Hi Robert, I was using the scaled lz.osg as an example, the same behavior can be seen if you simply use the cow.osg. It rains very hard right around the cow, but if you move the camera back far enough, the rain gets lighter and lighter and then finally stops completely. Is this the desired effect?
My original tests were on a projected osgdem generated database. If I used a very small database, then the osgprecipitation effect worked well, but loading a larger scene caused it to rain within a small region around the center of the bounding sphere. I'll keep looking and see if I can come up with anything. Thanks, Jason On Thu, Feb 26, 2009 at 4:07 PM, Robert Osfield <robert.osfi...@gmail.com>wrote: > Hi Jason, > > osgParticle::PrecipitationEffect is design to be effectively infinite, > no matter how far you move it should repeat endlessly. I've done lots > of testing on town sized models and it certainly works in this context > fine. > > My guess is that your scaling of the scene has introduced issues that > the shader isn't able to cope with for some reason. Try loaded a > model that is of a 1:1 scale to see if it works fine. > > Robert. > > On Thu, Feb 26, 2009 at 7:29 PM, Jason Beverage <jasonbever...@gmail.com> > wrote: > > Hi Robert, > > > > I'm playing around with the osgprecipitation example and noticed that it > > doesn't work as I would expect for large models. > > > > For example, osgprecipitation lz.osg works fine, but osgprecipitation > > lz.osg.100,100,100.scale doesn't show any rain unless you zoom in closely > to > > 0,0,0. > > > > Is there a way to make the precipitation effect follow the camera so that > is > > always appears to be raining? > > > > I attempted to use the setPosition method of particle effect on each > frame > > to the eye point of the camera, but that didn't seem to do anything. I > also > > tried sticking the PrecipitationEffect under a MatrixTransform and > > translating the MatrixTransform to the eye point of the camera each frame > > and it didn't seem to work correctly either. It seemed like it only > > respected the initial positioning and ignored all subsequent transforms. > > > > Thanks! > > > > Jason > > > > _______________________________________________ > > osg-users mailing list > > osg-users@lists.openscenegraph.org > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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