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 | ||
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Ns: |
view shift | ||
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Nl: |
view lift | ||
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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":
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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