vwright - Online in the Cloud

PROGRAM:

NAME

vwright - normalize a RADIANCE view, shift it to the right

SYNOPSIS

vwright [ view options ] distance
vwright [ view options ] name

DESCRIPTION

In the first form, vwright shifts a RADIANCE view the specified distance to the right,
putting out a complete 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.

If no options are specified on the command line, vwright reads a view from its standard
input.

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 distance, and produces
constant assignments on the standard output suitable for passing directly to rcalc(1).
For a given prefix N, the constant names are as follows:

Nt: view type ('v'==1,'l'==2,'a'==3,'h'==4,'c'==5,'s'==6)
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.hdr &

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

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