House project

[Petar Petrovic]

Umm, i want to make a two story house in it. And something feels very weird. These three rooms are supposed to be connected with a corridor and the whole floor should be connected with the first one by stairs. When i run the simulation, the two rooms that are directly hit by sun are well lit, the rooms that only skylight lits are pretty dark compared to sun lit ones, and the stair/corridor part of the house gets tons of artifacts and is pretty dark.

How does one make something like this. The house is a project of mine, i think ill put some frosted glass cubes to let some light lit those stairs. But still, how would i lit a two story house like this, if the back has no windows, and i put a ton of furniture in those front rooms, how would i merge ls files then?
And what to do with the exposure and uneven lighting?

[Jeff Mottle]

I'm not sure I understand. It seems like there is geometry missing in the image you are talking about...

[Richard McCarthy]

From the look of it, assuming the sun light comes from the north, I am guessing the dark room is on the south side, so that's why it can get so dark.

Another thing is to check that room's surface, you might have double-face in that room which made the room bounce with less light (bouncing to other surfaces that aren't visible, resulting in less 'lit' surface)


-RM

[Arnold Gallardo]

Hi,

Without actually seeing the .lp file it would be hard to diagnose a problem like this. it might have to do with your widnows and opning setup. I know this has been problematic for most people, to combine windows and openings in LVS the proper way and to get a believable convincing .ls file.

There are several possibilities here one of which is the way LVS processes 'daylight' but I would not do a verdict until I actually see the .lp file

[Petar Petrovic]

ok
i guess ill be looking for a place that'll host my lp file. But actually the project has been done in Max, so you could pretty much give me your ideas on how to model, light. I actually did every room separatly and then merged the files, and generaly rooms not directly lit by sun tend to get too dark...

[Arnold Gallardo]

Hi,

This could be a tone mapping issue as well as a merge file issue. This is a related case to the infamous 'interior' and 'exterior' merged file 'why it is too dark or too light' situation.

Tonemapping in LVS uses the 'mean value mapping' so depedning on the computed luminance, it would clip certain areas and ignore them, while others will have this subtleties in tonality. merging the files with different 'daylight' settings as well as tonemapping setttings (file-properties-display) would also result in this situation. You have to play with the merge file's display settings to find an optimum balance.

BUT having said that, I would not say firmly this is the case until I actually see the .lp file. BTW for those not familiar with this request, this has been a norm for Lightscape when there is a problematic situation and only a review of the .lp file can verify things that are happening and why. It could also be a simple process settings related to daylight,windows and openings situation.

[ July 01, 2003, 04:01 AM: Message edited by: Arnold Gallardo ]

[John Dollus]

What you are seeing looks correct. The space in back is getting 0% direct light and is only being illuminated by indirect skylight. You need to create openings connecting the back room to the other room or add artificial light sources to the rooms such as a simple ceiling fixture.

[Petar Petrovic]

I think thats the real answer. Maybe i was just looking for someone to agree with me .
But... I have a room facing north, it is never directly hit by sun, but is very well lit during the day, so this is an issue for me, how real and physicly correct is lightscape anyway.
I have to bring down the color bleeding of the parquet because the room turns red... dont think this is true either.