SU Podium Forum
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 1 of 3      1   2   3   Next
sepo

Avatar / Picture

Registered:
Posts: 4,371
Reply with quote  #1 

While we have this useful conversations, I was wondering did anyone tried to use mirrors to bring sun light deeper into interiors. I would be interested to hear does it work and what is the impact on the render times?

biebel

Avatar / Picture

Render Wizard
Registered:
Posts: 1,130
Reply with quote  #2 
How would you use a mirror to get that effect?
Fella77

Avatar / Picture

Master Commentator
Registered:
Posts: 1,192
Reply with quote  #3 

Are you talking about using a mirror placed out of view to reflect sunlight indirectly into an interior area?


__________________
Ready....Set....Render!
sepo

Avatar / Picture

Registered:
Posts: 4,371
Reply with quote  #4 

Yes David. I am thinking along these lines to have mirror outside which could bounce or redirect sun light deeper in interior. I am not sure if that is possible. I know TBD wrote script sometimes ago which shows you position of sun. Once you have position of sun than it should be relatively easy to position the mirror.

solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #5 

hmmm...

 

I have tried this before and yes it works in lighting up an area, but not a room, as we need GI for that. When I get access to my home server I will post it.


__________________
http://www.solosplace.com

solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #6 

I now see why I never posted this before, I stopped the render after like 3 hours, and then decided to use PS to fix it...

But all in all, it works for the topic.

 

 

I used two mirrors facing one another, the color is grey as black darkened scene, even though the reflection was perfect, white over-exposed the sun.


__________________
http://www.solosplace.com

solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #7 

Oh and this was also the first time I used 3d lights...so I cannot draw a conclusion as to the actual time of just mirrors, however without the 3d light the light would be whiter and sharper as the 3d light focuses a tint and acts like a filter it seems.


__________________
http://www.solosplace.com

sepo

Avatar / Picture

Registered:
Posts: 4,371
Reply with quote  #8 

Hi Solo

 

It is not exactly what I had in mind, but I can see increased render times .

I was really thinking more in terms as mirror outside probably concave which could bounce light deeper in space, like in real life . I have not tested it myself (lac of time) but it probably does not work. It came to my mind after seeing Biebel's balls (not the best phrase) and seeing the qualities of reflection on curved planes.

 

edit: what do you mean by 3d light?

solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #9 

http://www.websitetoolbox.com/tool/post/supodiumforum/vpost?id=1728134&trail=60 for 3d lights

 

and  on being inspired by Biebels balls. (wrong Podium site)


__________________
http://www.solosplace.com

sepo

Avatar / Picture

Registered:
Posts: 4,371
Reply with quote  #10 

lol... I knew it would bounce back. I see what you mean by 3d light.

biebel

Avatar / Picture

Render Wizard
Registered:
Posts: 1,130
Reply with quote  #11 
Hey Guys,
It  CAN be done without using mirrors, even without using any light in the scene except for the Sketchup sky....

Here is an example  of a rendering that is still cooking (it's at 36 % ray tracing).
I  have to add that I  desaturated colours because the  sketchup sky is too blue to use out of the box. This definitely is something that can (and hopefully will) be improved. TBD?

Here is the image: if you look closely you can even see reflections of the interior in the glass.



solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #12 

? huh!

 

Whats being done?

 

I don't get it...exactly what are we trying to achieve here...I thought the idea was to use mirrors to direct/aim/illuminate an interior space...

 

With a combination of 3d lights and textures I believe I can eliminate the need for SU sky, water & sky caustics and all post work....but at a price of about 4 hours on average.


__________________
http://www.solosplace.com

sepo

Avatar / Picture

Registered:
Posts: 4,371
Reply with quote  #13 

So what is the trick? Sun power 100%; particular geo position?

solo75080

Avatar / Picture

Texture King
Registered:
Posts: 2,487
Reply with quote  #14 

I set location for best sun infiltration, using TBD's sun locator, I position a 3D light, with a sky png texture inside, set lights and colorize to softer blue/grey etc. If I have any windows on oposite side of sun infiltration I then use a caustic map of the same sky (just smaller) with transparency just in front of window, window is a low LEM that gives backlight to sky texture.....this has worked once, and tried once (but cannot show as I am using it for contest)

 

Give it a whirl...down side is time.


__________________
http://www.solosplace.com

biebel

Avatar / Picture

Render Wizard
Registered:
Posts: 1,130
Reply with quote  #15 
Quote:
Originally Posted by solo75080
 

.....I don't get it...exactly what are we trying to achieve here...I thought the idea was to use mirrors to direct/aim/illuminate an interior space...




@ Solo,
Sorry, I thought bringing in sun light deeper into interiors was the main objective.

Quote:
Originally Posted by sepo

While we have this useful conversations, I was wondering did anyone tried to use mirrors to bring sun light deeper into interiors. I would be interested to hear does it work and what is the impact on the render times?



With the image I posted, I wanted to point out that there are ways to get the light deeper in without the need of a mirror...
I'll save it for another thread.

Back to the mirrors...

Cheers

Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.