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On 8/6/2016 9:24 PM, LanuHum wrote:
> Stephen <mca### [at] aol com> wrote:
>> I don't know if the book mentions her complexion but emission looks better.
>> I'm going to redo this from the start using what I've learned.
>> At the moment getting the positions right is next to impossible. So I
>> will re-export from Poser and rework it in PoseRay.
>> Regards
>> Stephen
>
>
> How to make a hologram? All write about proprietary programs.
> How do poor people do this? I live in Russia, I have no money.
>
Hi LanuHum, thanks for the interest.
What I am trying to do is to use emissive media using a density file.
I have created a density file for each R, G, B channel by running an
animation in PovRay. That (as Mr Eagle hints is similar in technique to
a CT scan) takes a series of slices of a model (in this case a Poser mesh).
These images in (TGA format) are stitched together using a DOS utility
called tga2df3.exe to create a df3 file.
One additional step is to take each tga file and copy the values of the
used colour to the two other colour channels. (Making something similar
to a greyscale image.) Before running tga2df3.exe. {I forgot to do that
step in this image and will post an updated image tomorrow.}
That is the high level description. :)
Let me know if you get the drift (understand). If not I am happy to try
to explain further.
--
Regards
Stephen
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On 6-8-2016 19:43, Stephen wrote:
> I don't know if the book mentions her complexion but emission looks better.
> I'm going to redo this from the start using what I've learned.
> At the moment getting the positions right is next to impossible. So I
> will re-export from Poser and rework it in PoseRay.
>
She is a black lady indeed :-)
I think this is a fair interpretation of the dragon considering the
problems generated otherwise. Delany clearly wrote the book with an
image in his head, not considering the future problems of modellers ;-)
--
Thomas
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On 7-8-2016 0:28, Stephen wrote:
> On 8/6/2016 8:40 PM, Bald Eagle wrote:
>> This looks like a very cool project, and I like the results so far.
>>
>
> Thanks, that's good to know. The more I work on it. The more I see what
> is wrong with it.
Ha! How true. It's a curse ;-)
>
>> Perhaps the dragon may look / show up better if the emission tapered
>> off in a
>> gradient as it moved away from the camera. Think of it as a slightly
>> darker
>> background media for a slightly brighter foreground media.
>>
>> I think you could just define a z-gradient and rotate it based on the
>> camera
>> location relative to the origin. If you need that equation, I can dig
>> it up from
>> one of my scenes.
>>
>
> I see what you mean. It is a good suggestion. Although I think that is a
> refinement that must come at a later stage.
> Thomas and I have a few integration points to discuss. For instance If
> we are both using media then we have to use a common scale in Pov units.
> And it is often hard to to make one media container inside a larger
> media container not obvious. Then there is the problem that I am using a
> PovRay modeller that only supports 3.6 syntax. Although I can use 3.7
> syntax with a workaround. It will not make reading the SDL easy.
> Thomas and I have both used Moray which uses a different coordinate
> system to PovRay. It used Z axis is up. Whereas, as you know PovRay is Y
> axis is up. We have to see how the scenes fit together first.
> (I am just jotting down a few points that come to mind)
>
We have indeed some issues to discuss not in the least the media scale
used. Also, we may need indeed to test how the nested containers are
going to show up.
I posted an image of Bellona with the bridge and river in place. No
nested containers there as I restricted the atmosphere to just above the
water surface (the water is a media) and just below the clouds container.
The foreground is where I imagine the Scorpions to be and we need to
consider their scale with regards to the environment.
Much to do but exciting!
This may perhaps help already: the media used for the atmosphere:
//start code
#declare AtmosScale = <10, 10, 10>;
#declare Atmosphere =
union {
//clouds:
//clouds media here.
//atmospheric haze:
difference {
sphere {0, 490}
plane {y, -0.749}
hollow
material {
texture {pigment {color rgbt 1}}
interior {
media {
intervals 1
samples 50
scattering {5, rgb <1,1,1>*0.03/AtmosScale
eccentricity 0.4
}
density {
spherical
colour_map {
[0 rgb 0]
[1 rgb 1]
}
}
}
}
}
}
scale AtmosScale
rotate 50*z
scale <5, 1.0, 5>
rotate 45*y
}
//end code
--
Thomas
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On 8/7/2016 8:10 AM, Thomas de Groot wrote:
> On 6-8-2016 19:43, Stephen wrote:
>> I don't know if the book mentions her complexion but emission looks
>> better.
>> I'm going to redo this from the start using what I've learned.
>> At the moment getting the positions right is next to impossible. So I
>> will re-export from Poser and rework it in PoseRay.
>>
>
> She is a black lady indeed :-)
>
Good and as long as we don't have a model called Peter we should stay
out of trouble. ;)
> I think this is a fair interpretation of the dragon considering the
> problems generated otherwise. Delany clearly wrote the book with an
> image in his head, not considering the future problems of modellers ;-)
>
This is always a problem, visualising is so much easier as you can
ignore any inconveniences.
I have redone my export from Poser and Rig for creating df3's.
While That is going on, here are a couple of images with the corrected
density files. There is more detail I think
--
Regards
Stephen
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Attachments:
Download 'eastern01a5d_fr_0000.png' (253 KB)
Download 'eastern01a5c_s_0000.png' (320 KB)
Preview of image 'eastern01a5d_fr_0000.png'
Preview of image 'eastern01a5c_s_0000.png'
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On 8/7/2016 8:30 AM, Thomas de Groot wrote:
> The foreground is where I imagine the Scorpions to be and we need to
> consider their scale with regards to the environment.
>
> Much to do but exciting!
>
> This may perhaps help already: the media used for the atmosphere:
>
> //start code
What are the dimensions of you atmosphere media container?
--
Regards
Stephen
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On 8/7/2016 8:52 AM, Stephen wrote:
> I have redone my export from Poser and Rig for creating df3's.
I think that I have the relative positions of the mesh and the df3
exported correctly.
I wish I had taken the time to give her some pants. The model looks like
someone I once worked with. I'm beginning to feel like a pervy stalker. :(
I've had to change the ratios of the R, G & B channels each time I've
made a new set of df3's.
I'll post the df3 files if anyone wants to play with them.
--
Regards
Stephen
Post a reply to this message
Attachments:
Download 'shenlong_02ae_0000.jpg' (156 KB)
Preview of image 'shenlong_02ae_0000.jpg'
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On 8/7/2016 11:28 AM, Stephen wrote:
> I'll post the df3 files if anyone wants to play with them.
povray.binaries.misc
Just under 2Meg
--
Regards
Stephen
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On 7-8-2016 11:30, Stephen wrote:
> On 8/7/2016 8:30 AM, Thomas de Groot wrote:
>> The foreground is where I imagine the Scorpions to be and we need to
>> consider their scale with regards to the environment.
>>
>> Much to do but exciting!
>>
>> This may perhaps help already: the media used for the atmosphere:
>>
>> //start code
>
>
> What are the dimensions of you atmosphere media container?
>
AtmosScale above: <10, 10, 10> ;-) and scaled <5, 1.0, 5> This last
does not influence changes too much.
I have been thinking that emissive media are not influenced by the
container scale or are they? I seem to remember that obly scattering is
influenced...
--
Thomas
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On 8/7/2016 12:00 PM, Thomas de Groot wrote:
> On 7-8-2016 11:30, Stephen wrote:
>> On 8/7/2016 8:30 AM, Thomas de Groot wrote:
>>> The foreground is where I imagine the Scorpions to be and we need to
>>> consider their scale with regards to the environment.
>>>
>>> Much to do but exciting!
>>>
>>> This may perhaps help already: the media used for the atmosphere:
>>>
>>> //start code
>>
>>
>> What are the dimensions of you atmosphere media container?
>>
>
> AtmosScale above: <10, 10, 10> ;-) and scaled <5, 1.0, 5> This last
> does not influence changes too much.
>
> I have been thinking that emissive media are not influenced by the
> container scale or are they? I seem to remember that obly scattering is
> influenced...
>
>
I don't know. I'll find out after I've finished playing Dressing Dolls. ;)
How many Pov units to a meter, in your scene?
I cheated with the clothes. I really need to export the scene from poser
again as a unit.
--
Regards
Stephen
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Attachments:
Download 'shenlong_02b_0000.png' (490 KB)
Preview of image 'shenlong_02b_0000.png'
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How are you combining the 3 different channels of media?
I tried defining 3 boxes with different colored interiors, and it seems that the
current box seems to "overwrite" the previous box.
Drat this blasted media thing !!!!
You kids and your fancy new-fangled gadgetry.
Never satisfied with the simpler things in life.
When I was a kid, we didn't even have spheres to render with - we had amorphous
rocks with whatever texture was available. And they were all drab.
And it was good enough for us. AND we liked it.
"Media." Harrrumph!
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Attachments:
Download 'stephen_dragon.png' (46 KB)
Preview of image 'stephen_dragon.png'
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