POV-Ray : Newsgroups : povray.beta-test : wrong sphere-sweep bounding example : wrong sphere-sweep bounding example Server Time
29 Jul 2024 14:26:35 EDT (-0400)
  wrong sphere-sweep bounding example  
From:
Date: 24 Apr 2002 06:09:04
Message: <2g0dcu8kasg84pqde8hdq9d60nkoa1cvka@4ax.com>
POV 3.5 RC2 icl on WinNT Sp 6 PII 233 with 128 MB

I have made concrete example of my suspicions. Thorsten, now you can turn out
any part for testing. Artifacts are probably becouse of epsilon problem but
disappearing regular part can't be artifacts.

#macro Make(R,T)
  sphere_sweep{
    cubic_spline 4
    <.000,.375,1.275>+T R
    <.355,.280,1.275>+T R
    <.200,.190,1.275>+T R
    <.045,.100,1.275>+T R
  }
  sphere_sweep{
    cubic_spline 4
    <.129544, 0.062436,1.382759>+T R
    <.389922,-0.189898,1.442598>+T R
    <.226876,-0.191609,1.368181>+T R
    <.063829,-0.193320,1.293764>+T R
  }
  sphere_sweep{
    cubic_spline 4
    <.500,.375,1.275>+T R
    <.145,.280,1.275>+T R
    <.300,.190,1.275>+T R
    <.455,.100,1.275>+T R
  }
  sphere_sweep{
    cubic_spline 4
    <.546506,-0.179102,1.516184>+T R
    <.214798,-0.088453,1.386560>+T R
    <.310268,-0.239917,1.394866>+T R
    <.405738,-0.391381,1.403172>+T R
  }
#end

background{1}
camera{orthographic}
Make(.02,x/6)
Make(.009,-x/4)
Make(.002,-2*x/3)

ABX


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