POV-Ray: Newsgroups: povray.general: Convert Vector to UV

POV-Ray : Newsgroups : povray.general : Convert Vector to UV_Vector		Server Time 2 Jun 2024 16:10:02 EDT (-0400)

From: Charles Worm
Subject: Convert Vector to UV_Vector
Date: 27 Aug 2004 01:21:36
Message: <opsddk58unmctz8s@enggltt10114.staff.ad.cqu.edu.au>

I'm attempting to render a very old scene I created in POV-Ray v3.1 with
  

POV-Ray 3.6 and am getting an error on a lathe object where I've used a 
 

vector instead of a UV_Vector.
Unfortunately the value for the vector is generated by vrotate() like so
...

#declare brace1_1 = vrotate(<curve+ringThickness, 0, 0>, maxAngle*z) -
  

<curve-barrelRadius, 0, 0>

How do I convert brace1_1 to a uv_vector so x=u and y=v?

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From: Slime
Subject: Re: Convert Vector to UV_Vector
Date: 27 Aug 2004 01:37:04
Message: <412ec880@news.povray.org>

> How do I convert brace1_1 to a uv_vector so x=u and y=v?

Simplest solution IMO:

#macro VectorToUV(vec)
(<vec.x, vec.y>)
#end

 - Slime
 [ http://www.slimeland.com/ ]

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