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 16:59:12 GMT
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Viewed:
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2032 times
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In lugnet.cad.dev, Kevin L. Clague wrote:
> I just wasn't sure what to do with -z and -Z. LPub has to manage
> ROTSTEPS and such, so it pre-rotates the model into the desired view
> angle. It also centers the model in the process. The default value
> of -z10 clips the front of the car off. Nice feature it that is
> what you want. I was able to back this toward the camera a bit, but
> when I was getting all white image with 60000, I thought there
> was an issue with clippping planes.
>
> I'd rather not have to specify them at all.
Yeah, me too, but opengl requires it. I didn't make them automatic
because the ldlite parser draws as it parses, so it doesn't have access
to the bounding box of the model. I'll fix it for the l3 parser to
default the clipping planes just outside the bounding box.
> Also, when I specify -i2 (PNG with alpha channel), is the background
> written out as transparent? I need this to happen for POV-Ray
> compatibility.
It works for me with -i2 (clipped) and -i-2 (unclipped). I used
Travis' red background to test it in mozilla.
<HTML><HEAD></HEAD><BODY BGCOLOR="#FF0000"><IMG SRC="car.png"></BODY></HTML>
Umm, watch out for antialiased -q lines in the released version of
ldglite. They come out partially transparent. It's fixed in the
current sources, so when I make those other two patches you're looking
for, I'll try to make a new release.
The current source code also supports the -mf and -mF command line
options so you can just generate the final image and put it wherever
you want. (try -mFc:\images\car.png for example).
Don
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Message has 1 Reply:
Message is in Reply To:
 | | Re: LDGlite and LPub
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| (...) I just wasn't sure what to do with -z and -Z. LPub has to manage ROTSTEPS and such, so it pre-rotates the model into the desired view angle. It also centers the model in the process. The default value of -z10 clips the front of the car off. (...) (20 years ago, 25-Oct-04, to lugnet.cad.dev)
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