| 1 |
.\" RCSid "$Id: getbbox.1,v 1.2 2003/12/09 15:59:06 greg Exp $"
|
| 2 |
.TH GETBBOX 1 11/15/93 RADIANCE
|
| 3 |
.SH NAME
|
| 4 |
getbbox - compute bounding box for RADIANCE scene
|
| 5 |
.SH SYNOPSIS
|
| 6 |
.B getbbox
|
| 7 |
[
|
| 8 |
.B \-w
|
| 9 |
][
|
| 10 |
.B \-h
|
| 11 |
]
|
| 12 |
[
|
| 13 |
.B "input .."
|
| 14 |
]
|
| 15 |
.SH DESCRIPTION
|
| 16 |
.I Getbbox
|
| 17 |
reads each scene description
|
| 18 |
.I input
|
| 19 |
and computes the minimum axis-aligned parallelopiped that
|
| 20 |
will enclose all of the objects.
|
| 21 |
Each
|
| 22 |
.I input
|
| 23 |
can be either a file name, or a command (enclosed in quotes
|
| 24 |
and preceded by a `!').
|
| 25 |
If no arguments are given, the standard input is read.
|
| 26 |
A hyphen ('-') can also be used to indicate the standard input.
|
| 27 |
.PP
|
| 28 |
The
|
| 29 |
.I \-w
|
| 30 |
option suppresses warnings.
|
| 31 |
The
|
| 32 |
.I \-h
|
| 33 |
option suppresses the header line "xmin xmax ymin ymax zmin zmax".
|
| 34 |
.SH EXAMPLE
|
| 35 |
To compute the bounding box for the object ``thingy'':
|
| 36 |
.IP "" .2i
|
| 37 |
getbbox thingy
|
| 38 |
.PP
|
| 39 |
To preview ``scene'':
|
| 40 |
.IP "" .2i
|
| 41 |
preview \-v FOUR \-b `getbbox \-h scene` scene
|
| 42 |
.SH NOTES
|
| 43 |
Since expanding a scene can require considerable overhead, it
|
| 44 |
is better to use the bounding cube produced by
|
| 45 |
.I oconv(1)
|
| 46 |
and read by
|
| 47 |
.I getinfo(1)
|
| 48 |
if an octree exists for the scene.
|
| 49 |
However, there are certain circumstances, such as foreign object
|
| 50 |
placement, that require knowing the bounding box rather than
|
| 51 |
just the bounding cube.
|
| 52 |
.SH AUTHOR
|
| 53 |
Greg Ward
|
| 54 |
.SH ACKNOWLEDGEMENT
|
| 55 |
Work on this program was sponsored by the LESO
|
| 56 |
group at EPFL in Switzerland.
|
| 57 |
.SH "SEE ALSO"
|
| 58 |
getinfo(1), oconv(1), xform(1)
|
