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I've not used sphere_sweeps much, but perhaps someone can explain why mine
looks like it does in this image? I thought I should see a nice smooth
transition from one sphere to the other... Granted, I'm working on a small
scale (as the code below shows), so is this a precision problem? I've tried
fiddling around, but I'm not understanding what's happening.
Any comments as to (a) what's wrong, and (b) how to fix this would be
greatly appreciated.
- How
#version 3.6;
global_settings {assumed_gamma 1.0}
camera { location <2, 1, -0> angle 1.5 look_at <6.1, 0.115, 5>}
background {color rgb 1}
light_source { <-30, 30, -30> color rgb <1, 1, 1> }
sphere_sweep {
cubic_spline
7,
<0.22, 0.18, -0.000>, 0.00501
<0.22, 0.17, -0.001>, 0.00452
<0.22, 0.16, -0.002>, 0.00401
<0.22, 0.15, -0.002>, 0.00302
<0.22, 0.14, -0.001>, 0.00301
<0.22, 0.13, -0.001>, 0.00302
<0.22, 0.12, -0.000>, 0.00501
texture{pigment{color rgb <1,0,0>}}
translate <-0.02,0,-0.005>
translate <4.77,0.2,3.64999>
}
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Attachments:
Download 'ssweep.png' (10 KB)
Preview of image 'ssweep.png'
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"nemesis" <nam### [at] gmail com> wrote in message
news:web.455b3ca1330d4cfee88ade10@news.povray.org...
> why's everything so small? camera angle of 1.5?!
>
> perhaps that's the problem: you're getting low accuracy from getting into
> microscopic realm... also, i heard sphere_sweeps have issues when they are
> very big. perhaps they also have problems when very small...
Hrmph. You're right, of course. I got carried away in my scene, forgot I
had zoomed in to look at some detail or other, thought how neat it would be
to put a sphere_sweep riiiight here... and it's no wonder I've got weird
problems. Once I backed out and made my shape correctly, things settled
down.
Thanks for the reality check, Nemesis!
- Humble How
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