Marcus Lindblom wrote: > Allen Bierbaum wrote: > >> Marcus Lindblom wrote: >> >> >>> Allen Bierbaum wrote: >>> >>> >>> >>> >>>> Does anyone have an idea for exactly what polygonal/fractal/sinusoidal >>>> landscape to test with. I am all for having something complex that can >>>> be auto generated but I need a link to a method to generate it. >>>> >>>> >>>> >>>> >>> Use a perlin noise function? You ought to be able to find one on the net. >>> >>> >>> >> I guess I was thinking of something a bit more interesting then noise. :) >> >> > Ok. :) > >> [snip] >> >> That said, if anyone has code for generating vegetation in OpenSG it >> could be very interesting to see. See >> http://www.vterrain.org/Plants/index.html for more details on this >> area. SpeedTree is used quite a bit with game engines and I think the >> early papers about it are public, I just can't find them right now. >> >> > SpeedTree is cool. I used that at my previous company. I don't know much > about their algorithms and I probably aren't allowed to talk too much > about it either. Their main strength is that they have chosen good > parameters to influence the generation of a tree, and they have an nice > system for generating each level and choosing them at runtime. They also > have an instancing system to reduce state-changes and the runtime-core > is naturally API-agnostic. > > Something like that would definately be cool as it would both be a ton > of polys together with LOD-out-of-hell so the amount of detail would be > pretty staggering. > > Couldn't we just grab a number of different huge models (from the > archives) and place them in one scene? > We could, but part of the idea was to make it so the program could be small (ie. just code) but it could generate a controllable and potentially insane amount of data. So for example if someone had a 48 node cluster and wanted to try rendering 10 billion polygons they could just change a command line parameter and tell the system to spew forth with data. :)
The simplest (but fairly lame) way to do this would be to generate a grid of teapots and let the user say how large the grid should be and how many levels deep the surface creation for the teapot should be. Not a great solution, but it would work. -Allen ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Opensg-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensg-users
