Radiance vwright program
VWRIGHT(1) VWRIGHT(1)
NAME
vwright - normalize a RADIANCE view, shift it to the right
SYNOPSIS
vwright distance
vwright name
DESCRIPTION
Vwright shifts a RADIANCE view from a picture or view file given on the
standard input the specified distance to the right, putting out a com-
plete set of view parameters in a single line on the standard output.
This utility is most often used to compute a right-eyed view from a
left-eye view for stereo imaging.
The distance given is in world coordinate units. A negative value
indicates a shift to the left rather than the right.
The second form substitutes a name prefix in place of the shift dis-
tance, and produces constant assignments on the standard output suit-
able for passing directly to rcalc(1). For a given prefix N, the con-
stant names are as follows:
Nt: view type ('v'==1,'l'==2,'a'==3,'h'==4,'c'==5)
Npx: view point x value
Npy: view point y value
Npz: view point z value
Ndx: view direction x value (normalized)
Ndy: view direction y value (normalized)
Ndz: view direction z value (normalized)
Nd: view focal distance
Nux: view up vector x value (normalized)
Nuy: view up vector y value (normalized)
Nuz: view up vector z value (normalized)
Nh: view horizontal size
Nv: view vertical size
Ns: view shift
Nl: view lift
No: view fore clipping distance
Na: view aft clipping distance
Nhx: derived horizontal image vector x value (normalized)
Nhy: derived horizontal image vector y value (normalized)
Nhz: derived horizontal image vector z value (normalized)
Nhn: derived horizontal image vector multiplier
Nvx: derived vertical image vector x value (normalized)
Nvy: derived vertical image vector y value (normalized)
Nvz: derived vertical image vector z value (normalized)
Nvn: derived vertical image vector multiplier
EXAMPLES
To start rpict(1) on a view .06 meters left of the view in the file
"right.vf":
rpict `vwright -.06 < right.vf` scene.oct > right.pic &
To move the rad(1) view named "left" 2.5 inches to the right and render
from there:
rad -v "right `rad -n -s -V -v left examp.rif | vwright 2.5`"
examp.rif &
To pass a view to rcalc for conversion to some other view:
rcalc -n -e `vwright orig < orig.vf` -f viewmod.cal -o view.fmt >
new.vf
AUTHOR
Greg Ward
SEE ALSO
pdfblur(1), rad(1), rcalc(1), rpict(1), rvu(1)
RADIANCE 8/29/96 VWRIGHT(1)
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