light pipe using RGB LED source

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lighting_freak
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Joined: Thu Jan 18, 2018 6:02 pm

light pipe using RGB LED source

Post by lighting_freak » Sun Feb 18, 2018 6:33 pm

Hi,

I'm testing the sanity of new lux core. I'm trying to use a real world dimensioned LED light source (modeled from OSRAM datasheet type LTRB GFSF).
This light source emits red, green and blue light, each from an individual chip. Unfortunatly I don't know how to attach a spectrum in new lux core.
The classic lux offers the "tabulated data" texture for this tasks.
LED.jpg
To receive any kind of result I've used RGB values to describe the color of each chip.
First render test is a clear PMMA volume (n=1,492 - no dispersion) guide that is swept in a rectangular profile.
The back-surface contains a rough glass definiton (0,33) - all the other faces are perfectly clear.
The camera is set to linear tone mapping.
Watching an intermediate result (after 1 day) shows that it may has some over exposure. Is it possible to adjust camera settings while rendering (like in classic UI)
Pipe.JPG
Actually I've expected to see some non mixed colors at the very beginning of the pipe.
I don't know whether its the missing spectrum or the camera settings.

BR
OS - Windows 7 X64
CPU - Intel CORE i7
GPU1 - Variants of notebook card from nVidia
GPU2 - Variants of notebook onboard card from Intel
Lux - Latest possible relaease

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B.Y.O.B.
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Re: light pipe using RGB LED source

Post by B.Y.O.B. » Sun Feb 18, 2018 6:44 pm

lighting_freak wrote:
Sun Feb 18, 2018 6:33 pm
Is it possible to adjust camera settings while rendering (like in classic UI)
Yes. Just edit the camera imagepipeline settings in the usual place.
You may have to leave the full-screen image editor first with Ctrl+Down (down arrow on keyboard) or by using the "Back to Previous" button:
scrn_2018-02-18_19-42-54.png
scrn_2018-02-18_19-42-54.png (6.33 KiB) Viewed 1354 times
The render will continue and you can go to the camera settings and adjust settings.
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lighting_freak
Posts: 156
Joined: Thu Jan 18, 2018 6:02 pm

Re: light pipe using RGB LED source

Post by lighting_freak » Sun Feb 18, 2018 11:05 pm

Hi,

That's easy... and perfectly working!
Pipe_CM_issue.JPG
Is there also a way to save the rendering like an *.flm file before.

Found my color mixing issue also.
Pipe_CM_issue_2.JPG
BR
OS - Windows 7 X64
CPU - Intel CORE i7
GPU1 - Variants of notebook card from nVidia
GPU2 - Variants of notebook onboard card from Intel
Lux - Latest possible relaease

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Dade
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Re: light pipe using RGB LED source

Post by Dade » Sun Feb 18, 2018 11:09 pm

lighting_freak wrote:
Sun Feb 18, 2018 11:05 pm
Is there also a way to save the rendering like an *.flm file before.
It may be more useful to save a .rsm too (a file to resume the rendering with LuxCoreUI) :idea:
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lighting_freak
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Re: light pipe using RGB LED source

Post by lighting_freak » Sun Feb 18, 2018 11:15 pm

Agreed! Is it possible to save such an resume file within Blender?
If yes, where do I find that option?
OS - Windows 7 X64
CPU - Intel CORE i7
GPU1 - Variants of notebook card from nVidia
GPU2 - Variants of notebook onboard card from Intel
Lux - Latest possible relaease

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B.Y.O.B.
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Re: light pipe using RGB LED source

Post by B.Y.O.B. » Sun Feb 18, 2018 11:35 pm

It is not yet possible in the addon.
I started to work on it in a branch a while ago, but I ran into problems.
I will need some time to document my issues, then I will report them.
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lighting_freak
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Re: light pipe using RGB LED source

Post by lighting_freak » Sun Feb 18, 2018 11:38 pm

No worries.
Take your time.
Thanks to all of your support.
OS - Windows 7 X64
CPU - Intel CORE i7
GPU1 - Variants of notebook card from nVidia
GPU2 - Variants of notebook onboard card from Intel
Lux - Latest possible relaease

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