Hi Jason, I'm a bit rusty on the implementation - it's been a couple of years since I wrote it. Could you provide a model that reproduces the problems whilst your still in the model.
Robert. On Fri, Feb 27, 2009 at 5:16 PM, Jason Beverage <[email protected]> wrote: > Hi Robert, > > It really depends on the model. With the dataset in the screenshots (which > is the boston example from osgGIS), no, everything looks fine as long as I > stay relatively close to the dataset. However, I have another dataset that > we use that is a much larger geospatial extent, and it seems to only work as > long as I am very close to the center of the bounding sphere of the dataset. > > Perhaps for the large datasets there is a setting I could tweak to the > number of cells or something to make the effect appear over the whole > dataset. I notice that the osgprecipitation example has a --boundingBox > option but it looks like it is never used. > > Thanks! > > Jason > > On Fri, Feb 27, 2009 at 11:54 AM, Robert Osfield <[email protected]> > wrote: >> >> 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 > > > _______________________________________________ > 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
