To clarify prev message: you can "pack" you data in 1d texture where each pixel contains value for some direction (f.e. with 1 degree resolution), and draw quad using shader where you generate texcoords based on vertex position in fragment shader to access image.
13.01.2012, 15:34, "Sergey Polischuk" <[email protected]>: > Hi, Kevin > > Are you really need mesh? > You can store data in image and draw just one quad textured with this image. > Update data in image according to your input data -> draw quad, repeat. > I think you can reuse some your code for mesh generation to create (point > coordinates in image) -> (polar coords) pairs to easily access data in image > > Cheers. > > 12.01.2012, 20:38, "Kevin Williams" <[email protected]>: > >> Hi, >> >> This may seem like overkill: using OSG for rendering a 2D polar surface >> plot, but I have plans for other things, so please bear with me! >> >> Basically, what I need to do is mesh a disk, and quite rapidly update the >> color along the radials (rho, constant theta's) in proportion to incoming >> instrument measurement data - basically a radar display. >> >> Because I don't see a way to collect a set of node indices along each of my >> defined radials on which I can set the color if I use the Delaunay mesher, I >> wrote a quick triangle mesher today. (It generates triangle vertex indices >> and coordinates, and eliminates shared vertices, but I can keep track of all >> the vertices along each radial.) >> >> I plan to create a TriangleMesh using this routine. >> >> My question is, is there an elegant way of handling this problem in OSG? As >> a new user there is a good chance I'm missing the obvious. :) >> >> Kind regards >> >> Kevin >> >> ------------------ >> Read this topic online here: >> http://forum.openscenegraph.org/viewtopic.php?p=44779#44779 >> >> _______________________________________________ >> 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
