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I don't know what's going on there but I tried putting a global_settings
{max_trace_level 20}, out of habit, into the script and got a same-surface
looking effect at the center of the cross. No other obvious changes. Then
--another strange thing-- I tried 2 instead of 20 and no change *back* to the
first look (difference?), even tried to comment it out; no return to previous
state. So I shut POV off, restarted it, ran the scene again (global_settings
still commented out) and it then returned to the first example: center
removed.
Message <366AFABA.C1925F3F@pacbell.net>, Ken typed...
>
>
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>Would one of you kind people do a sanity check for me
>on this bit of pov code and tell me if it's a bug or
>a feature. If I'm not mistaken when using the merge
>function it should only remove interior surfaces
>and not act like a intersection/difference function.
>That is not what is happening with this useage as
>defined below. IF it's a bug it will be the first
>I have found and I will take it through the proper
>channels once verified.
>
>Thank you for your time,
>
>Ken Tyler
>
>camera{location<10,15,-25>look_at y*5}
>
>light_source{<0, 50,-730>rgb 1}
>
>//Incorrect behavior:
>merge{
>box{<-5, 5,-1>,<5, 7,1>}
>box{<-1,-5,-1>,<1,10,1>}
> pigment{rgbf<1,0,0,1>}
> interior{ior 1.9}
> finish{ambient .95}
>}
>
>//Correct behavior:
>merge{
>sphere{<-10.0,10,0>,5
> pigment{rgbf<1,0,0,1>}
> interior{ior 1.9}
> finish{ambient .95}
>}
>
>sphere{<- 7.5,10,1.5>,5
> pigment{rgbf<0,0,1,1>}
> interior{ior 1.9}
> finish{ambient .95}
> }
>}
>
>plane{-z,-50 pigment{rgb 1}}
>
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><HTML>
><TT></TT>
>
><P><TT>Would one of you kind people do a sanity check for me</TT>
><BR><TT>on this bit of pov code and tell me if it's a bug or</TT>
><BR><TT>a feature. If I'm not mistaken when using the merge</TT>
><BR><TT>function it should only remove interior surfaces</TT>
><BR><TT>and not act like a intersection/difference function.</TT>
><BR><TT>That is not what is happening with this useage as</TT>
><BR><TT>defined below. IF it's a bug it will be the first</TT>
><BR><TT>I have found and I will take it through the proper</TT>
><BR><TT>channels once verified.</TT><TT></TT>
>
><P><TT>Thank you for your time,</TT><TT></TT>
>
><P><TT>Ken Tyler</TT><TT></TT>
>
><P><TT>camera{location<10,15,-25>look_at y*5}</TT><TT></TT>
>
><P><TT>light_source{<0, 50,-730>rgb 1}</TT><TT></TT>
>
><P><TT>//Incorrect behavior:</TT>
><BR><TT>merge{</TT>
><BR><TT>box{<-5, 5,-1>,<5, 7,1>}</TT>
><BR><TT>box{<-1,-5,-1>,<1,10,1>}</TT>
><BR><TT> pigment{rgbf<1,0,0,1>}</TT>
><BR><TT> interior{ior 1.9}</TT>
><BR><TT> finish{ambient .95}</TT>
><BR><TT>}</TT><TT></TT>
>
><P><TT>//Correct behavior:</TT>
><BR><TT>merge{</TT>
><BR><TT>sphere{<-10.0,10,0>,5</TT>
><BR><TT> pigment{rgbf<1,0,0,1>}</TT>
><BR><TT> interior{ior 1.9}</TT>
><BR><TT> finish{ambient .95}</TT>
><BR><TT>}</TT><TT></TT>
>
><P><TT>sphere{<- 7.5,10,1.5>,5</TT>
><BR><TT> pigment{rgbf<0,0,1,1>}</TT>
><BR><TT> interior{ior 1.9}</TT>
><BR><TT> finish{ambient .95}</TT>
><BR><TT> }</TT>
><BR><TT>}</TT><TT></TT>
>
><P><TT>plane{-z,-50 pigment{rgb 1}}</TT></HTML>
>
>--------------E9E0C95792A610B50C726B33--
>
--
omniVERSE: beyond the universe
http://members.aol.com/inversez/POVring.html
=Bob
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