I want to use a graphic viewer in XWindows, so I can open two or
three windows to plot the variables evolution in real time. The period
time of the RTL module is about 10 ms or 1 ms (I supose it will be
10 ms to have CPU time to run the application). The amount of
data is two floatting points variables for each plotting window, each
period time (so 3 or 4 floatting variables, because x-var (time) is
used for all the plots)
On 24 Oct 00, at 15:04, David Olofson wrote:
>
> What kinds of targets did you have in mind (fullscreen, X...), and what kind of
> user interaction do you need? How much data are we talking about?
>
> I have some more or less usable C code lying around (a few small applications,
> actually), that does basically what you ask for, but it's built around a direct
> buffer rendering toolkit that I hacked up for fun. (The basic idea was to have
> something that would work with games and the like under svgalib, GGI, SDL and
> similar drivers/APIs.)
>
> Currently, it can only use GGI (which means you can render on almost anything,
> but without nicely resizable windows), but could easily be ported to any
> graphics driver or API that provides something that looks like direct video
> buffer access. SDL is probably where I'll go if I bother with it.
>
> There is also a kernel module with a simple RT debug message and graphing API,
> that sends data to a user space application. It timestamps everything using the
> TSC.
>
>
> The problem? The applications could really use some tightening up, and the GUI
> toolkit *looks* about as nice as it's useless in most other respects. (And it
> looks pretty nice for a "few evenings, design as you go hack"... :-)
>
>
> I'll wrap up a package with some usable/comprehensible stuff if you wan't to
> play with it, but consider it all alpha stuff. (The tools have served me well
> so far, though. The graph viewer even reminds of a real application! ;-)
>
>
> David Olofson
> Programmer
> Reologica Instruments AB
> [EMAIL PROTECTED]
>
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