Subject:
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Re: LDGLite orientation matrix (l3p enhancement requests?)
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Newsgroups:
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lugnet.cad.dev, lugnet.cad.ray
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Date:
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Fri, 18 Jan 2002 00:17:58 GMT
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Viewed:
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176 times
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Don Heyse wrote...
> l3p -cc153.501,-190.465,55.321 -cla-12.6792,-14.1397,-6.26938
> -ca35.4894 m6040.dat -b15
>
> I added the last part because I thought it might be better to just
> dump an l3p command line. But I have a few problems with this.
>
> 1. I could use an orthographic option on command line. Is there one?
> This is handy for generating POV versions of assembly instructions
> like these: http://www.brickshelf.com/cgi-bin/gallery.cgi?i=94099
Using L3P you can achieve this look by using the -ca option with a small angle.
See examples in http://home16.inet.tele.dk/hassing/l3p_ca.html
Using POV's orthographic keyword in the camera definition would require
another way of calculating the optimum camera position.
I think one of the great features about L3P is that you always get a good
view in the first shot.
> 2. I could also use a way to set the sky vector on the command line.
L3P doesn't support tilting the camera (yet :-), simply because I estimated
it a rare feature. I don't think I have gotten any requests either.
BTW see http://www.spiritone.com/~english/cyclopedia/sky.html
> 3. It'd be handy to set PCT on the command line, but if this is too much
> of a chore I can continue to scale by moving the camera location.
You can by using the -cg option. If the third parameter is negative,
its absolute value is used as PCT.
But I may add another option to use together with the -cc option.
> 4. POV doesn't like a negative value for angle but you can enter one with
> -ca on the l3p command line.
I have added a check now.
/Lars
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