before you get all carried away with Xlib events for mouse scroll , - and to add some thoughts on the rediscovery of glrad:
Rshow, http://www.pab-opto.de/progs/rshow/ , the current Open-Gl version of my 1993 rshow on the then Iris-Gl, is still existing. Comes with GUI and some extra features, like generating image mapping, data display, grid generation, raytracing and multiple windows. Not much advertising for it over the years (except this one, also see 1998 paper on rshow), it is still in daily use here and at Fraunhofer ISE. (Note to LBNL: ISE is /not/ IBP, in case you shift all credit to IBP again).
The core problem with Open-Gl display in practice seems complexity. E.g.: Being inside a cabin with a forest outside doesn't matter for raytracing speed, but it does for plain Open-Gl, since it tries to draw all trees outside, visible or not. Today’s entry graphic cards have more power then a 1995 SGI Onyx2 , yes, but scenes have become more complex too, so brute force works only so much.
Rshow has a commandline option to ignore geometry below a certain size, so that allow interactive navigation with smooth, tessellated CAD surfaces, but it is a rather amateurish solution. Its Tcl/Tk GUI is a bit dated too, although, Tcl/Tk libraries are still supported by Debian and others. Apart from all this, I had not a single project in the last 20 years where rshow was not used, - "works for me".
There's at least one other Radiance geometry renderer out there, written by Andreas Gerber, based on some graphics library, but I don't further details at hand.
And one of the nicest Open-GL renderers had been the one in "Ecotect", - before it disappeared in the garbage bin of Autodesk.
Both rshow and glrad use the legacy API of Open-Gl, which has changed since then with the introduction of "shaders". It is still backward compatible (and probably will be a while with the mass of existing programs), but users are encouraged to upgrade.
Actually, I would have a look at the rendering engines available for some games if I were to start a very fast hardware Radiance-previewer from scratch today. They probably solved the Level-of-detail problem neatly. The drawback is, of course, the dependency on their feature library.
On 04/28/16 05:17, Douglas L Reeder wrote:
Yes, after I saw your 5 values I rotated it both ways and got/duplicated your
On Apr 27, 2016, at 8:25 PM, Randolph M. Fritz <[email protected] >> <mailto:[email protected]>> wrote:
On Apr 27, 2016 6:50 PM, "Douglas L Reeder" <[email protected] >> <mailto:[email protected]>> wrote:
> On os x with a logitech 3 button mouse with the center button being a mouse
wheel xev returns button 1 for the left button, 2 for depressing the wheel, 3
for the right button, and 4 for rotating the wheel.
Hunh, interesting. Did you try rotating the wheel both ways?
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