Re: heatbugs cold

[Ginger Booth]

> From address@hidden Thu Oct 12 19:45 EDT 1995
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> Date: Thu, 12 Oct 95 17:47:32 MDT
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> From: address@hidden (Nelson Minar)
> To: Ginger Booth <address@hidden>
> Cc: address@hidden (Terry Jones), address@hidden
> Subject: Re: heatbugs cold
> In-Reply-To: <address@hidden>
> References: <address@hidden>
>       <address@hidden>
> Sender: address@hidden
> Precedence: bulk
> Status: RO
> 
> >Basically, I've gotten nowhere.
> 
> Damn, I'm sorry to hear this. It doesn't sound that bad to me, though,
> mostly BLT problems.
> 
> >I got BLT from Rick (thanks, Rick!), and it does exactly what my BLT
> >build did.  That being, when I hit the "You can configure any
> >component by pressing this <button>" button, I get a little blank
> >window with the Motif border titled "GraphConfig", entirely empty,
> >and a "%" prompt appears in my shell.
> 
> If BLT doesn't work on your system, I don't know what to do except get
> frustrated. Is Terry's comment about #! path length helpful?
> 
> >    I tried Nelson's suggestion and built testGraph.  It compiles and dies:
> >        log10: SING error (yes, SING, not sign)
> >        Floating exception (core dumped)
> 
> Oh boy. Could you get a stack trace so we can see who is generating
> the error? Run under gdb and type "where" when it crashes.
> 
> >And I -do- clearly have color problems.  Heatbugs does execute.  But with
> >the code as written, there's no red anywhere on the heatbugs display.
> 
> Have you waited for a few minutes? Heatbugs starts in a completely
> cold world, so it takes a bit for the critters to generate enough heat
> to warm it up. (If you saw a demo, it's different now).
> 
> >(In a normal, "red = 0..255" scheme, nothing below red=100 is really
> >discernable from black.  This is true with green and blue as well.)
> 
> That will depend on the gamma correction of your monitor.
> 
> >All of the windows have Motif border titles of "address@hidden" or
> >similar.
> 
> That's normal: I don't have useful titles on the windows yet.
> 
> >    The probe window says idealTemperature "192 'a'" (carat on the a)
> >                          outputHeat    "64 '@'"
> >                          world            "Grid2d (0x4006c9)
> >                          heat             "HeatSpace (0x400...)
> >                          color                 "65 'A'"
> 
> That is correct. The values on the right are string reps of the
> variables. "idealTemperature" is an unsigned char, so it's printed
> both as a number and as a character. World is an object, so you just
> see its class name and the pointer.
> 
> >The time axis on the unhappiness graph runs 0..2e+29 .  This is a
> >straight line at 0.72 or thereabouts.
> 
> 2e+29?! That's odd. Normal heatbugs has unhappiness of about 0.75 at
> time 0, levels out around near 0.1 around time 250.
> 
> >I tried installing readline-2.0, because something (of course I
> >no longer recall what...) said redirect into Tk's promptAndEval wouldn't
> >work without it.  Which could be my problem.  However.  The linker croaks
> >when I try to build it.  "ld: invalid loader fixup needed on .sl)"
> 
> you shouldn't need to deal with readline, at least for Swarm. It is
> possible to configure libtclobjc to use it, but since we never prompt
> for Tk input (normally) it just confuses things.
> 


--
            Ginger Booth, Center for Computational Ecology
                Yale Institute for Biospheric Studies