Subject:
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Re: Unusual View matrices in LDRAW.INI
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 4 Oct 2000 21:13:37 GMT
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Viewed:
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595 times
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In lugnet.cad.dev, Don Heyse writes:
> Hey, does anybody out there know the origin of the "Oblique",
> "UpsideDown", and "Natural" viewing matrices in LDRAW.INI. I'm not
> sure whether these came from LDAO, LDLITE, or perhaps even LDRAW?
LDAO writes those entries to ldraw.ini. I'm not sure if any other programs
update that section or not.
The "Oblique" view is the default view for LDraw, and was also used for LDLite
(I think) and L3Lab.
"UpsideDown" is derived from "Oblique".
"Natural" was my attempt at a "pure rotation". I guess I blew it.
> Anyways, the point is I finally got that pesky mouse-drag model
> spinning trick to work in ldglite but I had to replace these three
> view matrices to do it.
>
> Also I noticed at one point that L3LAB seemed to shear the model
> sometimes during spinning. Does/Did it perhaps use the view matrices
> from LDRAW.INI as well?
L3Lab defaults to the standard Oblique view (not the one currently stored in
ldraw.ini, but the standard value). When you start to drag the model with the
mouse, L3Lab switches to a non-sheared view. You might ask Lars what that
view is, and use the same in LDGLite -- just to be consistent.
Steve
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Message has 1 Reply:
Message is in Reply To:
 | | Unusual View matrices in LDRAW.INI
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| Hey, does anybody out there know the origin of the "Oblique", "UpsideDown", and "Natural" viewing matrices in LDRAW.INI. I'm not sure whether these came from LDAO, LDLITE, or perhaps even LDRAW? Wherever they came from, they don't seem to be pure (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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