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Ron Parker schrieb in Nachricht ...
[...]
>From: par### [at] my-dejanews com (Ron Parker)
>Newsgroups: povray.windows
>Subject: Re: Local Transformations
>Message-ID: <36962501.0@news.povray.org>
>Date: 8 Jan 1999 10:32:17 -0500
>Xref: news.povray.org povray.windows:2401
>
Very interesting (that "Who is Thorsten Froehlich"-part was great :-)).
[...]
>That doesn't make sense. Where is a box? Where is a complex mesh object?
>Where is an isosurface that simulates an asteroid field? Where is
>union {sphere{0,1} sphere {20,1}}? (I think you'll find that this is
covered
>in more detail in the other thread, too.)
You are of course right and I get the point. But if you would define any
point related to the object (say
<(maxx-minx)/2,(maxy-miny)/2,(maxz-minz)/2>) and return this if the function
Whereis{Object} is called, it would make some thinks easier (not much, but
sometimes it may help).
You could achieve this with the megapov-keywords min_extend and max_extend,
if I get this right. How accurate are the bounding boxes of the 'primitive'
pov-primitives like spheres, boxes, cones, cylinders? Is the object
'centered' in there. I know this is not a accurate term, 'course where is
the center? What I mean is: would min_extend.x and max_extend.x return -1
and 1 for a sphere{0,1}, a box{-1,1}, a cone {<-1,0,0>,1,<1,0,0>,2}?
I'm just curios, hope I do not annoy anyone :-)
Marc-Hendrik
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