Just so we are all clear: this mod is still a Work In Progress. I would recommend that you use this mod with a copied savegame file if you are very concerned about a rock appearing where it shouldn't - though many of the floating object errors have been fixed as of 0.95.

Here is my answer to those frosted up windows inside (almost) every interior cell in the game.

Name: Reneer's Interiors Mod

Version: 0.95

Requirements: Latest Oblivion Patch, All Natural / Natural Interiors and OBSE 19+.

Description:
This mod intends to allow the player to view outside scenery from inside interior cells. This includes landscape, buildings, lights, sky and water - though water will need OBSE 19c+ to be released to work. This mod will also allow for landscape viewing outside of the cities – so long as the windows of the interior cell are transparent.

Currently this mod is very much alpha / beta stage – I can almost guarantee that you will experience problems with it in some fashion. The mod requires the use of PlaceAtMe, but also uses OBSE's DeleteReference command to minimize as much as possible any bloat that may occur by using PlaceAtMe. This system is not yet perfected and I advise that you test this mod on a new / copied save.

Screenshots:
See http://www.tesnexus.com/downloads/file.php?id=35897 page for screenshots. I'm rather fond of http://www.tesnexus.com/downloads/images/35897-1-1291598168.jpg that I took early in the mod's development.

If you have any screenshots you would like to submit to the mod's gallery, please feel free.

Changelog:
0.95 – Tree problems should be fixed. Fixed an issue with interiors being improperly rotated 180 degrees opposite to the outside exterior.
0.94 – 'Floating object' issues should be virtually eliminated now (though some exterior objects may not be moved into interiors). Landscape issues are still being examined. The mod now ignores Ayleid ruins and basemants without using name-based searching.
0.93 – Most issues regarding meshes being improperly placed inside interior spaces should be fixed – one issue that still remains is landscape sometimes poking into interior meshes.
0.92 - Major bugfixes, many interiors should function properly with little mesh collision occurring.
0.91 - ESP file update.
0.9 - Initial Release.

Download:
http://www.tesnexus.com/downloads/file.php?id=35897 (version 0.95)
Note: The "base" file is very large (~250MB). Updates to this mod will likely only include minor texture tweaks and ESP files, so you (should) only have to download the "base" file once.

Hi Reneer... very interesting.

I guess this takes a different approach from Immersive Interiors as it works outside of cities. :goodjob: Does this make them incompatible or complimentary? Anyhow will download to investigate when I can.
:foodndrink:

This mod is very much incompatible with Immersive Interiors and will, unfortunately, likely remain that way.

Does this mod automatically generate things outside of interiors, or did you manually build exteriors like SomeWelshGuy?

It does it automatically.

Though I just ran into a bug... bleh. Rather bad one too... crap. A problem with the scripting, so people can keep downloading the Base file and I will fix the script bug soon.

So this mod would technically work if you went into a completely new interior cell?

Yup, exactly.

Interesting. Though I'm guessing that if it's auto-generated, the scene visible will either be random or one of a set of possible scenes and so not necessarily match up with the exterior scene, am I right?

:ahhh:! That's amazing! I'm gonna try it out.

You are incorrect.

It matches exactly to the exterior. Whether that exterior is vanilla or modded - it matches up perfectly. Of course, it would match up perfectly if I could get my math right... (trying to figure out some strange bugs that are likely because I am not a mathlete )

This is very much a preview of coming attractions, however. Once OBSE 19c is released I will be making some necessary additions so that all interiors will work properly and that actual water will be inside the interior cell. But right now I am more concerned about my math problems.

That's quite impressive.

To what extent are exteriors shown? For example, is an entire city rendered when going in one building where you can't even see most of the other buildings?

Very interesting and impressive indeed..

Thanks Reneer, tracking on TESNexus and eager to test it

For the moment, yes. It copies the exterior exactly, with no regard to if the player can see outside the building or not. I haven't experienced any major FPS drop with this method, though I do have a relatively powerful computer.

Wow, I actually was just thinking what it would be like if someone made a mod like this just yesterday!

Ran into some bugs...

http://i888.photobucket.com/albums/ac87/MartutTES/ScreenShot250.jpg

http://i888.photobucket.com/albums/ac87/MartutTES/ScreenShot251.jpg

:shrug:

Okay.

There is a mod for Morrowind, I'm not sure if it's finished yet or not, but it automatically removes objects when you can't see them, such as when something else is in the way. It works like Umbra software I believe. If this could be done for Oblivion, and utilized by this mod, it could really fix any possible performance issues.

Most interesting. When it copies the exterior, does it do so from the current modded state of the cells or from the base layout?

Woops, missed your reply to wrinklyninja. That's quite impressive.

So SomeWelshGuy's work will soon be obsolete? Eh, all that work.

Wow that's extremely impressive Reneer, great job. I can't imagine how you got all that to work, but I'm really looking forward to trying it out. :foodndrink:

If this automatically copies the surrounding exterior, how does it take into consideration that some interior spaces are larger or smaller than what their exterior counterparts may suggest? Wouldn't that cause mesh clipping?

The answer is it doesn't (and it likely won't ever be able to). But, I've checked many different areas / buildings and haven't yet come across an issue - interiors are generally either just a little bit smaller or bigger than their exterior counterparts and not enough to cause clipping issues.

Reneer's Interior Mod Update Released!

0.91 - Updated ESP file.

It might be worth posting some of the math you're struggling with - maybe one of us could help out.

edit: I'm looking forward to finding the underwater interiors (basemants and the like,) that will add a new dimension to gameplay.

I -think- I've figured it out with the latest update (0.91, a simple ESP update). Time will tell, however.

Awesome, congrats