Hi Jason, Curious....
My using your settings and zooming out a long long way I see the artefact. It looks like the rendering cells are clamped to model. This would normally be what you'd want - in a sim you don't normally move outside the model. Are you seeing problems when moving around your model? Robert. On Fri, Feb 27, 2009 at 4:36 PM, Jason Beverage <[email protected]> wrote: > Hi Robert, > > I'm attaching a zip file showing some screenshots of what I'm seeing. I > disabled lighting so that the terrain database would be more pronounced. > This is running: > osgprecipitation --fogColor 0 0 0 1 --particleColor 1 0 0 1 --particleSize > 0.1 terrain.ive. Terrain.ive is an osgdem generated UTM database. > > The 3 screenshots show me being very close to the terrain and then zooming > out. You can see in 1.jpg that the lower bottom half of the rain is cut > off. In 2.jpg, I've added red lines to highlight the area where rain is > appearing. As I move in and out, I can see "boxes" of rain appear and > dissapear and finally if I zoom far enough away, the rain dissapears > completely. > > I'm thinking there is a precision issue somewhere... > > Thanks! > > Jason > > On Fri, Feb 27, 2009 at 10:55 AM, Robert Osfield <[email protected]> > wrote: >> >> Hi Jason, >> >> I've just done tests on town models here at it's working fine. >> >> Could you take a screenshot of what your are seeing, perhaps it's a driver >> bug. >> >> Robert. >> >> On Fri, Feb 27, 2009 at 3:49 PM, Jason Beverage <[email protected]> >> wrote: >> > 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 >> > <[email protected]> >> > 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 >> >> <[email protected]> >> >> 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 >> >> > [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 >> > >> > >> > _______________________________________________ >> > 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 > > > _______________________________________________ > 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
