Subject:
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Re: Tilting the camera
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Newsgroups:
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lugnet.cad.ray
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Date:
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Wed, 22 May 2002 01:52:32 GMT
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Viewed:
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584 times
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In lugnet.cad.ray, Lars C. Hassing writes:
> I'm adding an option to L3P to specify the skyvector,
> -csky<x>,<y>,<z> camera sky vector, default is 0,-1,0
> This option is primarily for other programs, that can calculate a vector.
>
> However, I think it would be useful to have a simple option to
> specify a sideways tilt of the camera simply in degrees.
>
> So, what is the proper English term for tilting the camera sideways ?
> Tilt ? Roll ?
Sproat called it Roll in his tutorial.
http://www.io.com/~jsproat/temp/Deciphering_L3P_Part_1.html
> And should a negative angle be a tilt to the left or to the right ?
Hmmm, according to the picture in the tutorial, this makes the camera
roll to the right:
#declare ROLL = 30;
sky vrotate(-y, z*ROLL)
So I guess a positive angle rolls right (if you use the -y convention).
> BTW, what is the term for tilting forward/backward ?
Can you do that with the sky vector, or do you have to do it
with look_at?
Don
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Message has 1 Reply:
 | | Re: Tilting the camera
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| (...) That's what I would call it. (...) Since most people are more familiar with clocks than polar coordinates, it makes sense that positive would rotate the camera clockwise. (Of course, this "rotates" the scene counterclockwise, but hey.) (...) I (...) (23 years ago, 22-May-02, to lugnet.cad.ray)
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Message is in Reply To:
| | Tilting the camera
|
| I'm adding an option to L3P to specify the skyvector, -csky<x>,<y>,<z> camera sky vector, default is 0,-1,0 This option is primarily for other programs, that can calculate a vector. However, I think it would be useful to have a simple option to (...) (23 years ago, 22-May-02, to lugnet.cad.ray)
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