Thanks very much for the suggestion and the help offer! FireRays indeed looks like it could do what I need. Though I find it a bit intimidating as it involves lots of stuff I have no experience with. I will toy a bit around with FireRays and come back to you. Btw have you some estimate how hard (say in number of lines of julia code) it is to wrap enough of Fire Ray to be able to intersect rays with cylinders on CPU?
On Friday, March 25, 2016 at 7:53:51 PM UTC+1, Simon Danisch wrote: > > I wrapped FireRender.jl <https://github.com/JuliaGraphics/FireRender.jl>, > which uses FireRays > <http://developer.amd.com/tools-and-sdks/graphics-development/firepro-sdk/firerays-sdk/> > to > do the hit detection. > The C-Interface of FireRender was very nice to wrap and got me started > very quickly, so i expect it to be the same for FireRays (which sounds more > like the library you'd like to target). If you use Clang.jl > <https://github.com/ihnorton/Clang.jl>, you should be up to speed quickly! > It's very fast and cross platform, as they use OpenCL. > Since I'm already familiar with everything involved, I could help to get > you started. > > Best, > Simon > > > Am Freitag, 25. März 2016 14:54:01 UTC+1 schrieb jw3126: >> >> I need to do things like building a simple geometry which consists of a >> few polygons, cylinders, spheres and calculate if/where rays hit these >> objects. >> >> Is there some julia library which does this already? Or some easy to wrap >> C/Fortran library? Any suggestions? >> I would prefer a solution, which does not depend on vectorization, but >> can be called efficiently as part of a loop, one ray at a time. >> >
