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 CAD / Ray-Tracing / 2083
2082  |  2084
Subject: 
Re: A different simple question
Newsgroups: 
lugnet.cad.ray
Date: 
Thu, 29 Jan 2004 15:07:31 GMT
Viewed: 
1447 times
  
In lugnet.cad.ray, Mike Thorn wrote:
Hello all you super-smart PoV-Rayers out there,

I've been fooling around with some simple animation the past few days and for
some reason I can't seemt o be able to do what I want. I have a bowl-ish
shape (thanks Michael L. for the generator in MLCAD!) that I want to rotate
the camera around, keeping the camera aimed at the same spot. I've tried
Friedrich's tutorial and I'm doing just what he says (omitting the +0.10).
Instead of rotating around the center of the model, it makes a wierd swing
out and away before coming back to the original spot.

I was wondering if anybody here can look at my code (link below) and tell me
what I'm doing wrong.

<http://www.roboticsresources.com/bowl.pov>
470KB

Thanks a million,
~Mike

You are rotating the camera around the y-axis!
You would like to rotate it around the vertical axis through the bowl's center.
Translate the model center to origo, rotate, and translate back again:
   translate -<400,-54,400>
   rotate   <0,360*clock,0>
   translate <400,-54,400>
Look at the end of the POV file for model center:
// Center: <400,-54,400>

The easiest way to create rotations is to rotate the model and leave
the camera and lights static:
object { bowl_dot_ldr
            rotate <0,360*clock,0>
         #if (version >= 3.1) material #else texture #end { Color7 }  }
But it gives a different effect.
/Lars



Message has 1 Reply:
  Re: A different simple question
 
(...) I am most definitely leaving myself out of that category. Especially after I see the stupid questions I'm going to have to ask here. (...) I thought that was what I was supposed to do...? (...) Right. I thought that's what rotating through the (...) (21 years ago, 29-Jan-04, to lugnet.cad.ray)

Message is in Reply To:
  A different simple question
 
Hello all you super-smart PoV-Rayers out there, I've been fooling around with some simple animation the past few days and for some reason I can't seemt o be able to do what I want. I have a bowl-ish shape (thanks Michael L. for the generator in (...) (21 years ago, 29-Jan-04, to lugnet.cad.ray, FTX)

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