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  man pages->IRIX man pages -> AliasToIv (1)              



NAME    [Toc]    [Back]

     AliasToIv - convert an Alias wire file to Open Inventor 2.0 format

SYNOPSIS    [Toc]    [Back]

     AliasToIv [-h] [-o] [-f] [-n] [-p]
	     [-c object_complexity] [-t	texture_quality]
	     [-k knot_epsilon]
	     <infile> [outfile]

DESCRIPTION    [Toc]    [Back]

     AliasToIv converts	3D model files in Alias	wire format (versions 5.0,
     5.0.1, 5.1, and 5.1.1) into Open Inventor 2.0 files. NURB curves and
     surfaces, polygons, hierarchy, textures, cameras and lights are converted
     into equivalent Open Inventor objects. Alias NURB surfaces	are converted
     into Open Inventor	surfaces, which	are then tesselated into polygons
     according to the object complexity	setting. If perfomance is not
     satisfactory on the model,	try a lower complexity setting.	For textures,
     convert the bitmap	image used in the texture to an	SGI .rgb file and
     place it in the same directory as the wire	file. Use the convenience
     function fromalias	to convert Alias .pix bitmap files into	.rgb files.
     Copyright (c) Abaco Systems, Inc. 1995.

   Command Line	Options
     Typically,	AliasToIv expects an Alias file	to be specified	on the command
     line after	all command option switches. If	no wire	file is	specified on
     the command line, AliasToIv will read from	standard input (stdin).	 By
     default, AliasToIv	writes the converted data to standard out (stdout) and
     messages to standard error	(stderr).

     -h	       Prints a	program	usage message to standard error	(stderr).

     -o	       Ignore cameras in the Alias file. This may make it easier to
	       examine the models in ivview.

     -f	       Use one normal for each face rather than	one normal for each
	       vertex when converting polysets.

     -n	       Convert all the trimming	curve control vertices to nonrational.
 Try this if some of the trimmed surfaces are not
	       displaying correctly.

     -p	       Convert all trimming curves such	that the first and last
	       control vertices	are interpolated. Try this is some of the
	       trimmed surfaces	are not	displaying correctly.

     -c	complexity
	       The complexity setting to use during the	conversion to
	       Inventor. The value ranges from 0.0 (lowest complexity) to 1.0
	       (highest	complexity).  The default is 0.5.

									Page 1


     -k	knot_epsilon
	       If specified, the knot vector will be scaled so that the	knots
	       are no closer together than knot_epsilon.

     -t	texture_quality
	       The texture quality setting to use in the Open Inventor file.
	       The value ranges	from 0.0 (lowest complexity) to	1.0 (highest
	       complexity).  The default is 0.1.

     -v	verbose
	       Provide feedback	during the translation.	 Valid values are:
		 -v 0 Do not print any summary.	This is	the
		      default value.
		 -v 1 Print a summary of the applied options
		      and a count list of the processed	Alias
		 -v 2 Print a summary of the applied options,
		      a	count list of the processed Alias
		      entities,	and the	name of	each Alias
		      entity that is processed.

     <infile>  Specifies the name of the file to read and convert to Open
	       Inventor.  If "-" is specified instead of a filename, input
	       will be read from
		standard input (stdin).	 If no file name is specified, the
	       program will be read from standard input	(stdin)	and output
	       will be written to standard output (stdout).

     <outfile> Specifies the name of the Open Inventor file to use for output.
	       If no file is specified,	the program will output	to standard
	       output (stdout).

KNOWN BUGS    [Toc]    [Back]

	      1. Every texture map is assumed to be
		 a color texture map.
	      2. Only the first	texture	attached to
		 a shader is converted.
	      3. Procedural textures are not converted.

	      1. Only the first	shader attached	to a
		 surface or face is converted.

	      1. If a surface or face was linked to an
		 exclusive light it will be illuminated
		 by both that light and	all non-exclusive

									Page 2


	      2. Area lights and linear	lights are
		 not converted.

FILES    [Toc]    [Back]

     /usr/Inventor/bin/AliasToIv		    Program file

TRADEMARKS    [Toc]    [Back]

     Alias is a	trademark of Alias Research Inc., Open Inventor	is a trademark
     of	Silicon	Graphics Inc.

COPYRIGHTS    [Toc]    [Back]

     AliasToIv is a Copyright (c) of Abaco Systems Inc., 1995 Abaco Systems
     Inc.  35468 Purcell Place,	Fremont, CA, 94536 - Tel. 510 494 0690 - Fax.
     510 494 0893 e-mail: 3dsoftware@abaco.com

SEE ALSO    [Toc]    [Back]

     DxfToIv, SlaToIv, ObjToIv,	SoftimageToIv and IvToRib.

									PPPPaaaaggggeeee 3333
[ Back ]
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