OBJ Extended 3D File Format
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#comment

v  %f %f %f	# vertex coordinate
vt %f %f	# 2D texture coordinate
vn %f %f %f	# vertex normal
vc %i %i %i %i	# RGBA vertex color

l v/vt/vn v/vt/vn
	Specify a line segment with vertex indeces.
	Indeces for vt and vn are optional.

f v/vt/vn v/vt/vn v/vt/vn [v/vt/vn]
	Specify a 3 or 4 vertex face with vertex indeces.
	Indeces for vt and vn are optional.

o object_name
parent parent_object_name
instanceof source_object_name

position %f %f %f
rotation %f %f %f
scale    %f %f %f

usemap texture_file [color|reflect|bump]
	If neither color, reflect, or bump is
	specified, texture maps should be
	interpreted in said order(first color,
	then reflect, then bump).


 3Dengine Notes
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Textures may be raw PPM, raw PGM, JPEG, or TARGA(raw or RLE).
Uniform scale only.
Bump textures are not yet implemented.
vc alpha values are not currently used.
Model files must end in ".obj".