http://nemo.ncsl.nist.gov/~sressler/projects/vrml/vrml_qtvr.html
Gred Seidman a student around here actually put the VRML
file together and also adds:
-------
DEF Author Info {
string "written by Greg Seidman <[email protected]>"
}
DEF Viewer Info {
string "walk"
}
DEF ViewerSpeed Info {
string "2"
}
DEF Cameras Switch {
whichChild 0
DEF Entry PerspectiveCamera {
position 0 0 0
focalDistance 2
}
}
Texture2 {
filename "PlazaPan.jpeg"
}
ShapeHints {
vertexOrdering CLOCKWISE
}
Cylinder {
parts SIDES
radius 0.73024033
height 1
}
}
The Texture2 filename is, of course, the JPEG you will be using. To keep
the proper aspect ratio, the radius must be dsrived from the dimensions of
the JPEG. Use imginfo on an SGI to get the dimensions, then
radius = X / (2 * PI * Y)
and the height is 1. The Camera node places the user in the center of the
cylinder. The Viewer Info ("walk") is optional, and it isn't clear whether
the examiner or the walk viewer is better for this purpose.
--Greg
--------------
Unfortunatly effective viewing of this scene requires a hefty SGI capable
of hardware texture mapping, in order to actually move at any reasonable
speed. The effect however is compelling and provides a highly realistic
environment.
Sandy Ressler
------------------------------------------------------------------------------
NAME: Sandy Ressler TELE: (301) 975-3549
USMAIL: National Institute of Standards and Technology FAX: (301) 926-3696
Bldg. 225 Rm B-266 EMAIL: [email protected]
Gaithersburg, MD 20899
WEB: http://nemo.ncsl.nist.gov/~sressler/people/sressler/sressler.html