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"Kevin Clague" <kevin_clague@yahoo.com> wrote in message
news:H90L2r.HM2@lugnet.com...
> Mike,
> LPub has always used shadowless lights for building instructions. • 2.0.1.5
> also has the ability to override ambient, diffuse and specular reflections
> default values created by L3P.
>
> I now turn reflections off, set ambient to 0.7 and diffuse to 0.3. This
> creates a less realistic picture, and looks very nice.
>
> I've added the post-post-processing of POV files to the list.
>
> Kevin
[ ... snipped ... ]
That is good news. I suppose I should look closer at the generated POV code
before making assumptions!
It must be the reflections I am seeing that I assumed were shadows. Take a
look at these two images:
Image No1:
http://www.brickshelf.com/gallery/mpw/trains/locomotives/CTB-3107/ctb-3107.j
pg
Image No2:
http://www.brickshelf.com/gallery/mpw/trains/locomotives/CTB-3107/ctb-3107_8
00x600.jpg
The first image was generated by LPub. The shading I am trying to eliminate
is most noticeable towards the front of the train where green transitions to
white. The second image is the scene I put together for the cover of my
instruction book[1]. It was generated by my old manual process - using
L3PAO and then manually swapping out the default light sources for the
include directive I mentioned earlier.
So now we are getting beyond my knowledge base - will the suggestions you
made above (turn reflections off, set ambient to 0.7 and diffuse to 0.3)
allow me to generate images that appear more like the one I generated
manually?
Thanks for your patience.
Mike
[1] This train is a Christmas version of my Blue Tank Engine I built to run
around our Christmas tree. I wanted to contrast the process of creating
instructions with LPub with my previous LD-Lite based process[2]. This
train was a good candidate because all of the CAD work is done already and I
had been through the process with the blue version.
[2] The result of my LD-Lite based process can be downloaded from:
http://www.carolinatrainbuilders.com/fmotm/0112/CTB-3105-std.pdf
--
Mike Walsh - mike_walsh at mindspring.com
http://www.ncltc.cc - North Carolina LEGO Train Club
http://www.carolinatrainbuilders.com - Carolina Train Builders
http://www.bricklink.com/store.asp?p=mpw - CTB/Brick Depot
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Message has 1 Reply:
 | | Re: Sand Green and POV
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| Mike, In the first image, there are no shadows. What you see are reflections. The reflection of the smoke stack on the top of the engine compartment looks like a shadow because the smoke stack is darker than the abient light you see other places. (...) (23 years ago, 20-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.ray)
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Message is in Reply To:
| | Re: Sand Green and POV
|
| Mike, LPub has always used shadowless lights for building instructions. 2.0.1.5 also has the ability to override ambient, diffuse and specular reflections default values created by L3P. I now turn reflections off, set ambient to 0.7 and diffuse to (...) (23 years ago, 20-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.ray)
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