Subject:
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Re: Free-Form Camera Positioning with MLCAD, L3P, and POV-RAY
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Newsgroups:
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lugnet.cad.ray, lugnet.cad.mlcad
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Date:
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Fri, 5 Jan 2001 00:25:01 GMT
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Viewed:
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2532 times
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Yes - you are right. I was confused by some of the scaling and rotation
primatives at the end of the .pov ray file.
I'll change this.
thanks
Lars C. Hassing <lch@ccieurope.com> wrote in message
news:G620En.FGp@lugnet.com...
> Brad Hamilton wrote:
> > Background
> > MLCAD describes 3D points using three different coordinates: (x,y,z). • If
> > you are looking at the front of a model, the X axis defines how far a • point
> > is to the left or right. The Y access defines how high a point is (i.e.
> > up/down). The Z access defines how far the point is away from the • viewer
> > (i.e. in and out). L3P converts these coordinates into a somewhat • different
> > system used by POV-RAY. The nice thing is that the reader need not
> > understand the POV-RAY system to position the camera.
>
> No, L3P uses the LDraw coordinate system.
> This was an important design goal.
> L2P (LGEO) uses its own coordinate system.
>
> Otherwise a good description.
> You might also want to tell about the QUAL and STUDS variables in the POV • file,
> used for making quick pre-renderings.
>
> I'll reconsider location.dat (camera.dat) and look_at.dat,
> please see http://news.lugnet.com/cad/?n=4891
> /Lars
>
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>
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