Author Topic: Light shadows?  (Read 5777 times)

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Offline hugo

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Light shadows?
« on: April 13, 2015, 07:41:36 am »
I'm trying to emulate the attached lighting effect shown in KS

1. What light source would I use, that would create the light spilling out onto background surfaces?
2. How would I construct the background, use HDRI or place object into 3 plane background?

or perhaps a link to a how to video I may have missed :)

cheers!

Offline Esben Oxholm

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Re: Light shadows?
« Reply #1 on: April 13, 2015, 08:44:40 am »
Hey Hugo.
I did a quick scene that you can have a look at if you want to.

Besides the cylinder i added a ground plane (edit > add geometry > ground plane) and a sphere which i gave an area light diffuse material.
Have a look for yourself here: https://dl.dropboxusercontent.com/u/2388699/Light%20shadow.bip

Hope it helps.
Ask if you need help for anything :)

Offline hugo

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Re: Light shadows?
« Reply #2 on: April 15, 2015, 09:21:15 am »
Hi Esben: I thank you for the input!

Offline hugo

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Re: Light shadows?
« Reply #3 on: April 15, 2015, 10:56:09 am »
Was a lot easier then I thought, I must have suffered from a premature senior moment  :)
attached is my pic. However strangely... aren't  there 2 reflections missing one for  -x and the other for -Y ?

Offline richardfunnell

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Re: Light shadows?
« Reply #4 on: April 15, 2015, 11:01:47 am »
Looks great :)

I think you would only get those if you had the two opposing walls as well, right now there's nothing to bounce the reflections on to.

Offline hugo

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Re: Light shadows?
« Reply #5 on: April 16, 2015, 06:12:11 am »
Hi Richard

This attachment is hope illustrates my query a bit  better, it shows the 3 interesting planes.
(the ceiling plane was NOT included in the rendering posted prior)

the reflections of reflected shadows are missing.
the reflected objects are NOT missing as I had inferred, they simply don't show because of the standpoint of the observer


« Last Edit: April 16, 2015, 06:36:02 am by hugo »

Offline richardfunnell

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Re: Light shadows?
« Reply #6 on: April 16, 2015, 06:58:43 am »
Thanks for the image, that explains the issue! Interesting, it may be due to your light/material settings. Can you share your scene?

I tried mocking it up and was able to get the effect, although it's very subtle. It's visible on my external monitor but not my laptop screen.


Offline hugo

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Re: Light shadows?
« Reply #7 on: April 16, 2015, 10:06:18 am »
I will upload the scene within the next day..... please stay tuned :)

Your PS image may well reveal whats really there, if that is true then KS needs a way to control that particular event.
Currently I'm unable to extract that subtle detail from a turntable animation of the Voronoi Sphere rotating within the 3 reflecting planes.

I also run KS on 2 monitors. from 2 different manufactures.
Its never going to happen that one can adjust matching resolutions for each.
That's why a rubber tire, for example, might look too grey and dull on one monitor and perfectly grey and dull on the other.

« Last Edit: April 16, 2015, 10:25:44 am by hugo »

Offline M_lam

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Re: Light shadows?
« Reply #8 on: November 02, 2016, 10:40:15 pm »
Hey Hugo.
I did a quick scene that you can have a look at if you want to.

Besides the cylinder i added a ground plane (edit > add geometry > ground plane) and a sphere which i gave an area light diffuse material.
Have a look for yourself here: https://dl.dropboxusercontent.com/u/2388699/Light%20shadow.bip



Hi Esben,

Pls help!
I meet same shadow problem ... and I can't download your file.

Many thanks!!