View Full Version : a question about game models.

11 November 2008, 03:36 PM
i am curious, does it matter if game models (or models in general) are one single piece of geometry.
ive modeled guns before, and found it difficult making it out of one piece of geometry (with high detail at least).
i looked at some models of team fortress via the model viewer in the source sdk. i noticed that the topolgy wasnt perfect, and it seemed like all the models were not made of one single piece of geometry.

so do models require one piece of geometry?

11 November 2008, 05:19 PM
Most games use a model format that will look like this:

Object Name GeoType
Scene Root null object
- Mesh1 poly mesh
-mesh2 poly mesh
- Mesh3 poly mesh


Basically, as long as all the meshes end up parented to the scene root it's all cool.

Edge loops for none-organic and non-animated things really don't need a proper edge loop. In fact, in a game you could go as far as to say the edge system that produces the least number of triangles while maintaining shape is the best and correct edge flow.

11 November 2008, 05:25 PM
i just always assumed models had to be one object (low poly models at least). so when ive modeled, i have always thought about how i could make a small item out of the mesh i already made. thank you for the response.

11 November 2008, 06:07 PM
Here's an example:

Same object

Single mesh: 116 triangles

3 Meshes: 92 triangles

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11 November 2008, 06:07 PM
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