Subject:
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LPub vertical plate murk
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Newsgroups:
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lugnet.cad
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Date:
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Sat, 29 Jan 2005 16:03:03 GMT
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Viewed:
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1161 times
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I’m using LPub for a project and have been perplexed a bit by the image quality
difference between rendering the “Complete Assembly” vs the “Instruction
Images”.
It might be the same issue as in this thread:
http://news.lugnet.com/cad/?n=11895
For vertical grey plates, the studs looked very murky and dim in the
instructions but nice and crisp in the complete image.
I tried messing around with the “Custom Lights” in the “Lights” tab to try to
fix this, but the instruction images didn’t respond to the lighting like the
complete image. (Also the “Ambient” choice seems to be broken in the generated
.pov file due to a lack of a semicolon.)
So I did a compare of the .pov files in the two cases and found that the
instruction images use a different camera position *and* individual object
rotation matrices vs the complete image. This makes the effect of lighting quite
different.
I merged the “Complete Assembly” generated .pov file camera over to the
“Instruction Image” generated .pov file and verified that the view can’t be made
the same because the individual objects are rotated.
So I think I can deal with this by using a local “config.lpb” file with a
different lighting position when I’m rendering the Instruction Images.
Is there a better fix other than having two config files?
Setting “L3P->Camera->Position and Orientation” so the complete assembly view
matches the instruction images won’t work because the parts themselves are
rotated. (Actually I don’t understand why the parts need to be rotated for the
steps, since I’m not using ROTSTEP. Can’t the view angle be set just by the
camera, the usual 3D paradigm?)
BC
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