[Radiance-general] view_param.cal

[Jack de Valpine]

Hi Rob,

There are a couple of things here.

   1. Each line of non-comment code in a cal needs to be terminated with
      ';' (note comments are enclosed in {} and do not need to be
      terminated by ';')
   2. Depending on where rayinit.cal is located you may need to do the
      following: calc /mypath/ray/rayinit.cal view_param.cal

-Jack de Valpine

Fitzsimmons, Rob wrote:

>I'm trying to create the view_param.cal mentioned in RwR page 328
>
>I think I've typed it exactly as it is in the book, then copy it to
>/usr/local/lib/ray/view_param.cal
>_______________________________________
>
>{ view_param.cal
>    Arbitrary aspect ratio:
>    p = pixel aspect ratio (height/width=input)
>    h = horizontal view angle (input)
>    v = vertical view angle (output)
>}
>
>v = 114.6*atan(p*tan(h/114.6))
>
>{ View parameters specific to 35mm film
>   f = focal length of lens (input)
>   v35 = vertical view angle -vv (output)
>   h35 = horizontal view angle 0vh (output)
>}
>   v35 = 114.6*atan(17/f)
>   h35 = 114.6*atan(11.5/f)
>______________________________________
>
>but I get an error when I try to use it 
>calc  view_param.cal
>
>I get back:
>view_param.cal, line 15:
>   v35 = 114.6*atan(17/f)
>   ^ ';' expected
>
>What am I missing?
>Thanks
>Rob F
>
>
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>  
>

-- 
#	John E. de Valpine
#	president
#
#	visarc incorporated
#	http://www.visarc.com
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