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.\" RCSid "$Id" |
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.TH GETBBOX 1 11/15/93 RADIANCE |
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.SH NAME |
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getbbox - compute bounding box for RADIANCE scene |
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.SH SYNOPSIS |
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.B getbbox |
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[ |
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.B \-w |
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][ |
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.B \-h |
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] |
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[ |
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.B "input .." |
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] |
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.SH DESCRIPTION |
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.I Getbbox |
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reads each scene description |
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.I input |
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and computes the minimum axis-aligned parallelopiped that |
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will enclose all of the objects. |
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Each |
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.I input |
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can be either a file name, or a command (enclosed in quotes |
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and preceded by a `!'). |
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If no arguments are given, the standard input is read. |
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A hyphen ('-') can also be used to indicate the standard input. |
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.PP |
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The |
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.I \-w |
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option suppresses warnings. |
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The |
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.I \-h |
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option suppresses the header line "xmin xmax ymin ymax zmin zmax". |
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.SH EXAMPLE |
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To compute the bounding box for the object ``thingy'': |
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.IP "" .2i |
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getbbox thingy |
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.PP |
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To preview ``scene'': |
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.IP "" .2i |
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preview -v FOUR -b `getbbox -h scene` scene |
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.SH NOTES |
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Since expanding a scene can require considerable overhead, it |
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is better to use the bounding cube produced by |
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.I oconv(1) |
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and read by |
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.I getinfo(1) |
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if an octree exists for the scene. |
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However, there are certain circumstances, such as foreign object |
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placement, that require knowing the bounding box rather than |
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just the bounding cube. |
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.SH AUTHOR |
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Greg Ward |
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.SH ACKNOWLEDGEMENT |
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Work on this program was sponsored by the LESO |
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group at EPFL in Switzerland. |
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.SH "SEE ALSO" |
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getinfo(1), oconv(1), xform(1) |
