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Neddahk nous apporta ses lumieres en ce 24/10/2006 12:52:
> "P Brewer" <pbj### [at] wowway com> wrote:
>> Also, I mentioned above the 4 seasons idea. What can I do to differentiate
>> spring from summer? I'd like 4 distinct images. I was thinking a foggy
>> picture for spring with some small patches of snow?
> How about flowers on the tree for the spring picture?
It's an oak. It don't have flowers as we usualy expect them: they are the same
green as the leaves and tiny. The male flowers cast LOTS of polen that is caried
by wind and caught by the somewhat sticky female flowers.
--
Alain
-------------------------------------------------
Caught Asleep At Your Work Desk
Just in case your boss catches you asleep at your desk, be ready to blurt out
this excuse #1: I was working smarter - not harder.
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> ...One problem I'm having is getting the look
> of filtered light through the leaves. I get some unrealistic dark spots
> under the canopy. Making the leaves partially transparent doesn't seem to
> do much unless I over do it. Then the leaves on the fringe are too
> transparent. Any ideas?
Beautiful work. I'm really enjoying the recent tree images here--yours and
the one posted by Neddahk.
I don't know much about X-Frog, so I don't know what kind of leaf objects it
creates. If they are simple triangle patches--that is, just a "flat" front
and back surface--you might try adding double_illuminate to them. That
worked for me when I made some similar leaf objects in sPatch. It allowed
some light to filter through.
Ken W.
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>
> I don't know much about X-Frog, so I don't know what kind of leaf objects it
> creates. If they are simple triangle patches--that is, just a "flat" front
> and back surface--you might try adding double_illuminate to them. That
> worked for me when I made some similar leaf objects in sPatch. It allowed
> some light to filter through.
>
> Ken W.
Ken,
There are a lot of options for what to make the leaves out of, but I'm using
a flat mesh object similar to what you stated. I have the leaves tagged as
double_illuminate, but the leaves that don't get direct light hitting them
don't benefit from the tag regardless.
I have had some time to play with the lighting and found some ambient added
to the leaves to be the trick. I'll post a comparison this evening, as well
as the latest tree model I've come up with.
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Here's a comparison of my original lighting along with added .45 ambient.
Still working on a better tree model. It's so hard to come up with
something that looks really good without murdering memory resources. I'm
currently using up around 350MB of memory on the one tree and I'm worried
it'll really limit my final scene flexibility.
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Attachments:
Download 'comparison.jpg' (300 KB)
Preview of image 'comparison.jpg'
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"P Brewer" <pbj### [at] wowwaycom> wrote:
> Here's a comparison of my original lighting along with added .45 ambient.
A noticeable improvement! The ambient value, added (I assume) to the ambient
"glow" in radiosity, really did the trick. I'll have to remember that for
my own tree scenes.
You had asked about how to differentiate the seasons: I would actually try a
slightly different light color for each (and a different light direction.)
It may not happen in reality, but I think we've become attuned to "seeing"
things differently in different seasons. Cool crisp blue for winter,
perhaps at a 45-degree angle; slightly yellowish (with some haze) and
directly overhead for summer, etc. Fall might be late afternoon (and thus
late-setting sun, yellow/orange.) A bit of visual (and emotional)
manipulation, but I don't think we'd notice the "technique." :-)
Ken
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