POV-Ray : Newsgroups : povray.object-collection : The Bright Star Catalogue : Re: The Bright Star Catalogue Server Time
7 Dec 2021 14:02:33 EST (-0500)
  Re: The Bright Star Catalogue  
From: Mike Horvath
Date: 10 Feb 2018 19:56:46
Message: <5a7f94ce$1@news.povray.org>
I kinda wish there were a POV-Ray object that would be guaranteed to 
always be 1 pixel big.

Mike



On 2/10/2018 5:14 PM, Bald Eagle wrote:
> Le_Forgeron <jgr### [at] freefr> wrote:
> 
>> not really.
>> Unless your default camera is
>> ...
>>    up image_height*y
>>    right image_width*x
>> ...
>> but that's not the camera you get from
>>
>> camera{ orthographic }
>>
>> || up: 0.000, 1.000, 0.000
>> || right: 1.330, 0.000, 0.000
>> || location: 0.000, 0.000, 0.000
>> || direction: 0.000, 0.000, 1.000
> 
> Well, then I guess I didn't remember correctly  ;)
> 
> I vaguely recalled this discussion:
>
http://news.povray.org/povray.advanced-users/thread/%3Cweb.5845a06cc97737fcc437ac910%40news.povray.org%3E/
> 
> So modifying that so Pixel "size" is described in POV-units, then we could have
> 
> #macro Zoom (PixelSize)
> camera {
>   orthographic
>   location <0, 0, -PixelSize>
>   look_at  <0, 0, 0>
>   right (x*image_width )*PixelSize
>   up    (y*image_height)*PixelSize
>   }
> #end
> 
> 
> (I haven't entirely determined what the best camera-to-lookAt distance is to
> avoid some weird things happening)
> 
> 
> 
>


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