Subject:
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Re: Why LDraw.org doesn't use ldconfig.ldr ???
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 4 Oct 2007 19:01:48 GMT
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Viewed:
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7537 times
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In lugnet.cad, Don Heyse wrote:
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In lugnet.cad, Travis Cobbs wrote:
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light. For example, here is an image from the part tracker:
Here is the same part rendered in LDView (with ldconfig.ldr turned on, and
an attempt on my part to approximate the light angle used in ldglite):
Here it is from LDView with no lighting:
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Now I don’t remember exactly how the official ldconfig.ldr colors were
arrived at, but they *are* significantly different from the ldglite colors.
Perhaps they’re intended for a dimmer lighting model. Whatever, they
certainly look a bit washed out and dull in ldglite. I suppose I
should compare my lighting model code to yours to quantify the difference.
Meanwhile, perhaps the official ldliterc.dat file should be modified to
use the original ldlite colors where they already exist? (Edge colors
could still be set to black to make the majority happy)
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I’m pretty sure the ldconfig.ldr colors are designed to match the brick colors
when no lighting is used (as in the second LDView picture above. If the ambient
and diffuse terms add up to more than 1.0, the original colors end up getting
washed out. I’m guessing that ldglite’s ambient and diffuse terms add up to
quite a bit more than 1.0.
When I did the “subdued” lighting in LDView, I set it up so that the ambient and
diffuse terms add up to 1.0. (It uses 0.5 for the intensity of both the ambient
and the diffuse, actually.) Relatively recently I noticed that my regular
lighting has a diffuse intensity of 1.0 and an ambient intensity of 0.2. I’m
hesitant to change it now, though, since it’s been that way for so long. I’ll
probably see what 0.8 diffuse looks like and change it if it seems OK.
--Travis
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Message has 1 Reply:
 | | Re: Why LDraw.org doesn't use ldconfig.ldr ???
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| (...) I'd leave your setup alone since it seems to work well with the current color list. You're right about ldglite. I didn't like dark shadows, or maybe I run my monitor too dark to avoid migraines, but the lighting settings do add up to more than (...) (17 years ago, 4-Oct-07, to lugnet.cad, FTX)
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Message is in Reply To:
| | Re: Why LDraw.org doesn't use ldconfig.ldr ???
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| (...) The actual truth may be lost to the sands of time, but I believe the ldlite colors were possibly copied from the original LDRAW colors, and the ldlite Windows lighting code was matched to that? I know I did a good amount of twiddling in the (...) (17 years ago, 4-Oct-07, to lugnet.cad, FTX)
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