Author Topic: Need help with mirror reflections  (Read 4650 times)

richardgronberg

    Reputation: 3
Need help with mirror reflections
« on: February 07, 2012, 03:59:44 pm »
February 07, 2012, 03:59:44 pm
Sorry, I just started using Lumion 2...how can I create mirrors..or atleast something similar to a mirror.

Appreciate any help on this topic.

Richard

Re: Need help with mirror reflections
« Reply #1 on: February 07, 2012, 05:03:38 pm »
February 07, 2012, 05:03:38 pm
Hi Richard, welcome to the Lumion forum!

It's unfortunately not possible to create perfect mirror reflections in Lumion (yet).

There's more information here:
http://lumion3d.com/forum/index.php?topic=2983.
http://lumion3d.com/forum/index.php?topic=2868.

richardgronberg

    Reputation: 3
Re: Need help with mirror reflections
« Reply #2 on: February 08, 2012, 08:24:52 am »
February 08, 2012, 08:24:52 am
Thanks for the quick reply, but I am not sure I totally follow.
I would be forever grateful if someone could post a video tutorial on how to "fake" a mirror in a room.

Thanks in advance!

Richard

Re: Need help with mirror reflections
« Reply #3 on: February 08, 2012, 09:16:52 am »
February 08, 2012, 09:16:52 am
See video, is something like that going to be "sort of" OK?  

It's very fake and can be tweaked a little by altering the texture sizing etc, but works depending on the need for correctness ie if its only just seen briefly and gives the impression of a mirror then who's going to say its not a mirror  :-D

It also does not deal with any motion/animations in front of the mirror as its static.

Fake Mirror sample

Re: Need help with mirror reflections
« Reply #4 on: February 08, 2012, 12:00:54 pm »
February 08, 2012, 12:00:54 pm
Mirrors is definitely we can improve upon in the future. I can imagine that it would be nice to be able to turn on perfect reflections for planar surfaces like floors, mirrors and such.

richardgronberg

    Reputation: 3
Re: Need help with mirror reflections
« Reply #5 on: February 08, 2012, 01:44:24 pm »
February 08, 2012, 01:44:24 pm
Thanks Peterm, that would work very well at the moment.
Could you please show how you did that ?

Remko, yes...mirrors is very important for us at least. I would very much like to see at least "fake mirrors". Also since I have you on the line...a generell light feature would be awesome also..if possible, so that you do not need to go through the entire process of adding lights manually.


Brian Hengelsberg

    Reputation: 43
Re: Need help with mirror reflections
« Reply #6 on: February 08, 2012, 10:28:04 pm »
February 08, 2012, 10:28:04 pm
This is how i deal with a mirror...works pretty good...this is down and dirty low quality.  I will upload something better later.  This is made making a true mirror, meaning i put a glass 1/4" in front of a metal surface..and cranked all of the reflective properties of the glass up.  I then put the reflection ball about 2 feet in front of my "mirror".  Thoughts?

Mirror test.mp4

Re: Need help with mirror reflections
« Reply #7 on: February 08, 2012, 11:21:57 pm »
February 08, 2012, 11:21:57 pm
I think Brian's solution with metal reflective surface looks better and will handle a non-static scene as well, must try that out.

Anyway, here's how I did it:

1. place your mirror or mirror surface where needed or as part of import objects, preferably have an additional forward glass object or coplanar surface
2. place your camera for a single shot where the mirror is and take a shot looking out from the mirror and render to photo
3. flip the image horizontally to match as the mirrored perspective
3. apply the camera shot render image to the surface of your mirror, the main mirror surface, not the glass surface
4. scale and position it as needed in the Material editor depending if the surface UV's are Ok for it or not
5. apply a glass material to the glass surface, if it's suitable for the scene and not otherwise needed then also use the Utilities -> Reflection Control to tweak local reflections for the glass.
6.  thats about it.

Very fake looking reflection, used to use it in realtime 3d when needed, possibly tweaking the image in PS to give it a slight curvature or other might help.

Brian Hengelsberg

    Reputation: 43
Re: Need help with mirror reflections
« Reply #8 on: February 09, 2012, 05:28:33 am »
February 09, 2012, 05:28:33 am
Not sure what you are asking Daz, but i thought i would do a quick room with some lights and a moving figure as a test.  I know there is a light leak and the room is goofy...but lets face it this is about the mirror.  I did mess up the metal behind the glass, so you will see some lines in the mirror image.  None the less....this seems to work better then other options i have seen.  I wonder if there would be a way to make a mirror material that would essentially be a cube map that would be for the mirror alone.

<a href="http://youtu.be/A06KOQt0NsM" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/A06KOQt0NsM</a>

richardgronberg

    Reputation: 3
Re: Need help with mirror reflections
« Reply #9 on: February 09, 2012, 08:19:32 am »
February 09, 2012, 08:19:32 am
Great stuff Brian...would you by any chance be willing to upload a step by step video...because it does not turn out as good for me.

Thanks again for such fast responsive forum..I am very glad we found Lumion.

Re: Need help with mirror reflections
« Reply #10 on: February 09, 2012, 08:59:54 am »
February 09, 2012, 08:59:54 am
Brian

Mirror looks great.

SEVERINO

    Reputation: 25
Re: Need help with mirror reflections
« Reply #11 on: February 09, 2012, 09:12:50 am »
February 09, 2012, 09:12:50 am
Hi Brian Hengelsberg
[size=15pt]Please have a little step by step tutorial to make the mirror.[/size]
Some have mental capacity at the height of the feet.
Thank you very much,
Severino

Brian Hengelsberg

    Reputation: 43
Re: Need help with mirror reflections
« Reply #12 on: February 09, 2012, 12:46:33 pm »
February 09, 2012, 12:46:33 pm
I will try to put a step by step with images up during lunch today, and if someone can recomend a screen capture program (perhaps free) I will see if I can follow it up with a video tutorial tonight.  Any suggestions on screen capture software?

stucki

    Reputation: 32
Re: Need help with mirror reflections
« Reply #13 on: February 09, 2012, 01:10:06 pm »
February 09, 2012, 01:10:06 pm
fraps is very good

Brian Hengelsberg

    Reputation: 43
Re: Need help with mirror reflections
« Reply #14 on: February 09, 2012, 06:41:13 pm »
February 09, 2012, 06:41:13 pm
here is a down and dirty screen capture for the mirror.  Please don't laugh too hard at the production quality...tried to do it quickly on my lunch break.  Used "hypercam 2" for the screen capture...worked pretty well for free software. (please note, vid may still be processing)

<a href="http://youtu.be/eFOh1oGUZMM" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/eFOh1oGUZMM</a>