usage:

viewer mesh_file scale_factor

example:

viewer ../meshes/bunny_nf4000.noff 10


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commands:

1.change view points : 'v'

there are two viewpoints, view from the camera, and view from (0,10,0).
type 'v' will toggle view points.

2.select object to manipulate

refined geometry :'g'
camera           :'s'


3.select coordinates system , the manipulation is relative to the selected
  one

camera : 'S'
world  : 'W'
object itself : 'L'

4.define manipulation

 rotation : left button
 translation: right button
 translation: both left and right button
 
5.menu

press middle button : "show faces" will show faces; "show edges "
will show all the edges.

 





