https://en.wikipedia.org/wiki/Wavefront_.obj_file
I prefer to enter coordinates using text editors. The obj format is easy to understand and write.
o is the object name
v is the vertex coordinate
s is the smoothing function
f is a face defined by the vertexes by their occurrence. For a face you need at least 3 faces.
I use it to trace a shape and convert it into a face. This is faster than entering them in blender.
My coordinates come from the shp file used to input to MicroCFD software to calculate drag coefficient.
The simplest contents is:
o suv
v 0 0 0
v 0.195 0.365 0
v 0.2 0.375 0
v 4.5 0 0
s off
f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
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