PDA

View Full Version : Lashkar Gah - Realtime Visualization


michibe
08-27-2010, 09:27 AM
I'm happy to show the latest project (at least a project where I'm allowed to show it) I did with Pure3d.

The project was quite big for one person and needed to be done in 4-6 weeks. It's a prototype for virtual training so not really for a game.
Basically it's a visualization of Lashkar Gah located in Helmand Province / Afghanistan.

The project is 16 square kilometers in size and consists of the north city area which is visible as distant objects plus a rural "mission-zone".

http://www.pure3d.de/gfx/echtzeit/lashkargah/afghan-lashkar-gah-backyard-closeup-pure3d.jpg

The "mission-zone" requirement was pretty straight forward. Roads, enterable buildings, vegetation and landscape cover, plus a mix of greenery and desert like areas with less cover. With this several missions will be designed around the landscape by the client.

To get it done in a short timeframe (I was working without freelancers this time since the modeling had to be convincing but not state of the art with ultra-realistic stuff) the key was modulaity.

http://www.pure3d.de/gfx/echtzeit/lashkargah/afghan-lashkar-gah-skyline-realtime-pure3d.jpg

For a layout I had the Google Sat-Image to lay out infrastructure. With it's help I did also my terrain color map for vegetation and settlement zones. Leadwerks is limited to 5 terrain textures so I had to think of a textures which make sense. I also had no terrain decals for breaking up tiling.

http://www.pure3d.de/gfx/echtzeit/lashkargah/afghan-plantation-lashkar-gah-pure3d.jpg

I used several modular wall sets and 10 buldings. To keep textures at a minimum I used vertex painting with decals in 3dmax to get decent results and use some attachments to the buildings. The 10 buildings were also layed out to "stick" them together so they look like new buildings. Afghan buildings are often done this way and are basically cubic forms.
After doing several "blocks" of walls and buildings I just had to duplicate, rotate the clusters and connect them in a logical way with small paths and roads. With this modular way a big city was not a huge deal.

http://www.pure3d.de/gfx/echtzeit/lashkargah/afghan-poppyfields-pure3d.jpg

For the vegetation I created a whole new set with bushes, trees and plants. There are around 2.750.000 vegetation object on the whole level.
To speed things up I also painted rubble and repeating props onto the terrain. Just as a side note: The Afghan Vegetation Set can be bought on pure3d.de in the shop. ;)

http://www.pure3d.de/gfx/echtzeit/lashkargah/afghan-rural-backyard-pure3d.jpg

To get good performance all stuff behind walls is culled after a certain distance and common LoD models are used.



If I had unlimited resources for such a project I would use some more scultping for the 10 buildings since those mud-made buildings are perfect for tools like zbrush/mudbox and put more effort to create nice zones with specific asset variation and of course nice hanging wires in the air.

http://www.pure3d.de/gfx/echtzeit/lashkargah/lashkar-gah-mission-area-overview-pure3d.jpg

But it's often a fight "art vs. economy vs. clients specs". :)

More Projects on www.pure3d.de

qrt
09-10-2010, 04:30 PM
nice ;
i like that foto aspect of this images... especially sky.

Rahl
09-14-2010, 06:50 PM
You clearly know what you are doing,

considering that I myself did level design in various engines and used similar techniques Id like to pose a few questions:

Didn't find any info on the Poly count of structures, you stated that buildings were made with repeated cubic modular structures, what is the Poly count for a single building cube ?

What texture sizes did you use ?

An issue I had when working with game engines, Unity in particular, with ground clutter was that when posing it on the terrain the engine placed it in such a way that the geometry of the object collided with the geometry of the terrain in one spot only. This created obvious issues in slanted terrain areas. Does Leadworks have this issue ?


The scope of the project is interesting and Imo the modelling looks nice,

again good work.

CGTalk Moderation
09-14-2010, 06:50 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.