Re: Re: Bug associated with Graphics3D???
- To: mathgroup at smc.vnet.net
- Subject: [mg105271] Re: [mg105254] Re: [mg105210] Bug associated with Graphics3D???
- From: Syd Geraghty <sydgeraghty at me.com>
- Date: Wed, 25 Nov 2009 23:01:16 -0500 (EST)
- References: <200911241050.FAA00829@smc.vnet.net>
I guess from your results below that a bug report to WRI is in order.
Cheers .... Syd
Incidentally your analysis reminds me of a design problem I had in 1966.
The problem was to optimise the shape of the two surfaces of a high-gain cassegraine antenna given
the radial characteristics of the microwave source located about where your point is.
The antenna ended up on the UK AWAC aircraft of that era.
I programmed in Algol in those days on an Elliott Automation 803.
Boy how I would like to have had Mathematica and a Mac in 1966!
Syd Geraghty B.Sc, M.Sc.
sydgeraghty at mac.com
Mathematica 18.104.22.168 for Mac OS X x86 (64 - bit) (12th September 2009)
MacOS X V 10.6.1 Snow Leopard
MacBook Pro 2.33 GHz Intel Core 2 Duo 2GB RAM
On Nov 25, 2009, at 6:13 AM, Louis Talman wrote:
> Well, sort of. Reversing the order of the Graphics3D objects
> introduces something else I don't want, which is a box of varying
> size. And if I transfer the PlotRange option to Pla[x] to control box
> size, the 5.1 issue reappears!
> I forgot to mention a couple of things. The issue pertains only to
> v7; the code works as it should in v6---at least on a PPC Mac. And
> I've verified the problem in v7 on both a PPC Mac running OS X 10.5.8
> and on a Windoze box running Vista Home Premium. And tweaking
> ViewPoint doesn't help. (Haven't tried a major change---but the
> problem seems so sensitive to position that a little tweak in
> ViewPoint should've done something if lighting angles are the issue.)
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