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.\" RCSid $Id: pkgBSDF.1,v 1.2 2011/06/23 18:17:12 greg Exp $ |
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.TH PKGBSDF 1 6/23/2011 RADIANCE |
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.SH NAME |
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pkgBSDF - package BSDFs provided as XML for Radiance |
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.SH SYNOPSIS |
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.B pkgBSDF |
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[ |
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.B \-i |
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][ |
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.B \-s |
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] |
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.B "bsdf.xml .." |
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.SH DESCRIPTION |
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.I PkgBSDF |
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takes one or more XML files, each describing the bidirectional scattering |
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distribution function of a surface or geometric system, and packages |
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them into RADIANCE scene descriptions. |
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If the input file(s) do not begin with a '.' or '/', the directories |
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in the RAYPATH environment variable will be searched. |
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One rectangle is produced for each BSDF that has |
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no detail geometry and/or no rear-side reflectance distribution. |
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If both front and back reflectance distributions are present with |
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detail geometry, then two rectangles will be used to sandwich |
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the geometry extracted from the BSDF file. |
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The front surface will always be centered just in front of the |
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origin facing the positive Z-direction, with "up" in the positive |
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Y-direction. |
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The back surface, if present, will parallel the front surface at |
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a distance slightly greater than the BSDF system thickness. |
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Scene units will always be in meters. |
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.PP |
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The |
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.I \-i |
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option causes |
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.I pkgBSDF |
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to produce frozen octree instances for any detail geometry, |
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which may reduce memory requirements in scenes with many |
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references to the same complex BSDF object. |
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.PP |
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Normally, |
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.I pkgBSDF |
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produces one RADIANCE scene file for each XML input, replacing |
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the required '.xml' suffix with '.rad' in the same directory. |
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The |
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.I \-s |
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option sends the RADIANCE scene description to the standard |
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output rather than writing it to a file, but only works |
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for a single XML input. |
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Any instance octree is still written out to a file generated |
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by replacing the '.xml' suffix with '.oct' in the same directory. |
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.SH EXAMPLE |
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Package all the XML files in the current directory as Radiance |
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scene files, employing frozen octree instances for any |
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detail geometry: |
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.IP "" .2i |
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pkgBSDF -i *.xml |
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.SH AUTHOR |
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Greg Ward |
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.SH "SEE ALSO" |
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genBSDF(1), oconv(1), xform(1) |
