Forum: Poser - OFFICIAL

Subject: more ? about the obj txt (now in wordpad and crimson editor)

elenorcoli opened this issue on Jul 20, 2006 · 5 posts

Stegy posted Thu, 20 July 2006 at 4:55 PM

I believe the vt,  vn, & f lines have to do with uv mapping. 

Example: a very simple plane before taking into a UV Mapping program:

g plane

v 0 0 0
v 10 0 0
v 0 10 0
v 10 10 0

vt 0 0
vt 1 0
vt 0 1
vt 1 1

vn 0 0 1
vn 0 0 1
vn 0 0 1
vn 0 0 1

f 1/1/1 2/2/2 4/4/4 3/3/3

After UV-mapping and changing it to a spherical mapping:

v 0.00000000 0.00000000 0.00000000
v 10.00000000 0.00000000 0.00000000
v 0.00000000 10.00000000 0.00000000
v 10.00000000 10.00000000 0.00000000

vt 0.02500000 0.02500000
vt 0.97500002 0.02500000
vt 0.97500002 0.97500002
vt 0.02500000 0.97500002

vn 0.00000000 0.00000000 1.00000000
vn 0.00000000 0.00000000 1.00000000
vn 0.00000000 0.00000000 1.00000000
vn 0.00000000 0.00000000 1.00000000

g plane

f 1/1/1 2/2/2 4/3/4 3/4/3