Thread:Sirebel/@comment-26249703-20160706000416/@comment-26607640-20160708195950

Thanks Tkootstra! I had a look on the fbx files on AutoCAD and unfortunately they're meshes (which makes sense), not lines as I expected. Since I don't know if it is possible to get a mesh's lenght (I have no experience with 3d modeling), I'll have to convert them to a polyline. The problem is that I'll end up with two polylines, one for the inside, and another for the outside of the track. I can however generate a third in the middle, loosely representing the track's axis. The good news is that there is a scale factor! The files seems to be on a 10:1, meaning that 10 units on the fbx corresponds to 1 unit in the drawing.

I tested two of the easiest tracks (I have to remove a lot of clutter that is between the lines), Daytona Int. Speedway and Richmond and here's what I found regarding length:

-Daytona-

Outer: 4033.42 m

Axis: 4013.19 m

Inner: 3993.08 m

Wikipedia: 4000 m

-Richmond-

Outer: 1202.87 m

Axis: 1183.21 m

Inner: 1163.26 m

Wikipedia: 1200 m

As you can see, the values are close, but since I'm not sure the scale is exactly 10:1 and not an approximate value like 10.002145:1, I can't really say for sure. Also, I have no idea how they measure a track's lenght in real life, but I'm sure that the values they give us are rounded.

Another good news is that different layouts of a single track overlap each other (altough not perfectly), meaning we can make a "general" track map, with all of it's variations combined.

And another good news (for me) is that despite an weird rotation inside the drawing, the tracks I tested seems to be oriented North! Yay!

So, let me know what you guys think about all this. Which of the 4 distances should we use? Or should we use all of them? I can also post some screenshots if you guys want.