Tris...tram ?

Hi,
I’ve followed several tutorials on several Blender vers found on YouTube or books…
In each version Edges/Faces/Vertex and Objs are counted up.

In the last one (Concept Car Modeling Blender 2.69 .2013. (5) https://www.youtube.com/watch?v=BqzjQ3ASoxQ, Ion Mastac) there’s another item that is counted : Tris.

In the UI the term Tris refers to triangular faces, is this the same meaning ?
What’s the point since Tris are twice Faces ?

Yes, tris are triangular faces.
All faces are actually made up of tris. You just don´t see them because it´s more convenient for humans to be able to use shapes other than tris.
Tris are not allways twice the faces. They´re only twice if the face has 4 vertices. But faces can also have more than 4 vertices.

The point is that computers “think” in tris and if you create a quad or a polygon with 5 vertices the computer has to work as much as it has to for two or three tris.

This is esspeically important if you make your models for performance relevant reasons such as computer games.

You obviously look aware of the video game modeling requirement. Are you part of this industry ?

In the case of this tutorial the model ends up with 276816 tris.
Would you consider this number cheap enough for a computer ?

Not really but sometimes. I freelance and have done some work for games and other real time stuff. But my main source of income are animations for stupid commercials, image films and similar rubbish. :wink:

In the case of this tutorial the model ends up with 276816 tris.
Would you consider this number cheap enough for a computer ?

For a computer? As in rendering it on your PC in Blender? Yes that´s fine. Whatever your rig can handle.

Displaying it in realtime in a game? That´s a very high poly count. Polygon count depends on what it is used for. A minor prop in an mobile phone game will have completely different requirement than the main character/vehicle in a next gen PC game. It will also depend on the game engine you use, how many other objects there are, other stuff that costs performance such as lighting and textures and a lot more things. To find out more about that I´d ask on a forum that targets your the game engine you´re using.