Subject:
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Re: LDGlite and LPub
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Newsgroups:
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lugnet.cad.dev
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Date:
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Mon, 25 Oct 2004 17:13:08 GMT
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Viewed:
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1958 times
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In lugnet.cad.dev, Don Heyse wrote:
> Anyhow, I switched the -cg to -cg30,45,60000 to get the same
> viewing angle as the l3p command line and got an image much closer
> to the pov output. However the car was a bit smaller. Nuts!
> I noticed if I use a larger screen height in ldglite the car comes
> out bigger. A setting of -v5 gives a much closer match, so maybe I
> botched the pov aspect ratio calculation. 768 is close to 800 so
> perhaps I reversed the x and y. I'll have to take a look at that.
> -v800,800 looks very close in size to the pov output.
Please note that L3P's field of view is the horizontal field of view, and
OpenGL's is the vertical field of view. You have to convert if you want the
same result. You can check real quick by doing a square image in each. If they
look the same, then it's a good bet that's the problem.
--Travis
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Message has 1 Reply:
 | | Re: LDGlite and LPub
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| (...) In case you don't want to think about the math, here it is: vfov = 2*atan(tan(hfov/2)/(...h/height)) --Travis (20 years ago, 25-Oct-04, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: LDGlite and LPub
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| (...) Ok, now we're getting closer to the problem, I think. The ldglite image is blank, so I changed a few things to see what's up. I switched -mS to -ms so I could see it on screen and got a car facing forward. Does the offscreen windows rendering (...) (20 years ago, 25-Oct-04, to lugnet.cad.dev)
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