vwright

Langue: en

Autres versions - même langue

Version: 8/29/96 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)

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

AUTHOR

Greg Ward

SEE ALSO

pdfblur(1), rad(1), rcalc(1), rpict(1), rvu(1)