How to make a ruined city street?
Creating 3d models is not as easy as preparing a regular business card or a simple photomontage in Photoshop. Even if you know the basics of 3d graphics and create simple 3d models, remember that the entire agglomeration scene is a much more difficult thing.
A typical city 3d scene has the following structure:
- the basis are streets and adjacent areas on which buildings are built,
- if the scene have to be detailed, and usually have to, elements of small architecture are added (lamps, park benches, all park equipment etc.),
- structures of viaducts and bridges,
This is the average city scene, see below for more information:
Ruined city street as a based model
Streets, most often with attached sidewalks, are the basic models of such a scene. They are the foundation of the entire construction site. It is thanks to street 3d models that you build the entire structure of the city. They are the template for place buildings.
How to model such model? Usually, such models are not difficult to make, they are simple, low polygonal designs. However, when we want to perform something like this for the scene of a demolished city, it looks different. A simple model becomes much more complicated. There aren’t many details, but the mesh itself and the way it is modeled is problematic.
Generally, the best method is to simply build a regular city street model – and then rework it. It usually looks like this:
- modeling the basic shape,
- texturing – it is very important to arrange the UVs at this stage, then it can be much more difficult,
- if you work in 3ds max, remember not to remove modifiers – they will be needed in the next stage and later editing,
- divide the mesh into segments – it will facilitate the formation of cracks on the pavement,
- use the Cut Edges tool (3ds max) to cut out the shapes of cracks and holes,
- switch to Extrude and model holes and cracks,
- remember to use Modifiers Stack – control texture mapping when switching between modifiers,
- create small elements in the additional scene – debri, rubble etc.
- merge it to main scene and scatter on sidewalk model,
TIP: the best way to do that is use Havoc or Reactor tool. If you are using Blender or Maya you can use additional plugins,
Destroyed building 3d model
The most important element of the city are buildings. If you decide to model a ruined city yourself, you have to remember that they are different from ordinary buildings, which usually lack a lot of details.
Destroyed buildings are models similar in structure to streets. Again, the best method is to start with an undamaged object model and then convert it to destroyed version.
Workflow looks similar. We remember about good texturing, divide the mesh into segments to facilitate editing and add cracks.
It’s also a good idea to scatter debris models on floors – exactly the same method as on destroyed streets.
Ready-made 3d assets are most often used for large projects, such as video games or special effects for films.