[Radiance-general] Re: Rendering Panoramas

[Jack de Valpine]

Hi All,

Quick note on ranimate. It should be possible to use ssh instead of rsh 
by specifying it to ranimate. Ssh does take a little work to set up 
correctly for trusted logins (ie logins that do not require a password 
which is what ranimate needs) but it is possible to do and seems to work 
fine. I have done so in the past for ranimate, but it has been a while. 
I will forego all the arguments about why you should be using ssh anyway 
in place of rsh, they are readily available elsewhere...;->

Regards,

-Jack

Greg Ward wrote:

> Hi Lars,
>
> Rob has some good tips about using rad to generate rendering options 
> using the OPTFILE setting, and I use this feature a lot, myself.  
> There are many ways to run the rad command, and the man page is the 
> best place to look for understanding these.  In its most basic form, 
> it acts like a simple makefile to build an octree, optionally running 
> mkillum, and maintain a set of rendered and filtered pictures.
>
> However, if you're doing a set of runs over different lighting 
> configurations, scene alternatives, etc., you often need a lot more 
> than rad can offer in terms of scene building.  I sometimes use a 
> makefile to maintain the various octrees I use based on scene input, 
> then employ a rad input file that specifies only the OCTREE setting -- 
> no explicit scene files.  This can also be specified on the rad 
> command line, so a single rad input file can suffice for many scene 
> alternatives.
>
> For generating animations, the ranimate program does a reasonable job, 
> though it really needs updating for running animations over a network 
> now that rsh no longer exists....
>
> With regard to fisheye projections, the -vta option can go up to a 360 
> degree field of view, where you get a circular image whose 
> circumference is essentially a single value corresponding to the 
> direction opposite the -vd parameter.  I don't know anything about 
> ptviewer, or the kinds of projections it uses.  You may need to write 
> a script and pass it to rtrace with the -fac (and -x & -y) options to 
> take ray origin and direction on the input and produce a color picture 
> on the output.  Using this method, you can get any projection onto a 
> rectangular image that you can describe mathematically.
>
> -Greg
>
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