ALIASTOIV(1) ALIASTOIV(1)
AliasToIv - convert an Alias wire file to Open Inventor 2.0 format
AliasToIv [-h] [-o] [-f] [-n] [-p]
[-c object_complexity] [-t texture_quality]
[-k knot_epsilon]
<infile> [outfile]
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.
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-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
entities.
-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).
1. LIMITATIONS
Texture
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.
Shaders
1. Only the first shader attached to a
surface or face is converted.
Lights
1. If a surface or face was linked to an
exclusive light it will be illuminated
by both that light and all non-exclusive
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lights.
2. Area lights and linear lights are
not converted.
/usr/Inventor/bin/AliasToIv Program file
Alias is a trademark of Alias Research Inc., Open Inventor is a trademark
of Silicon Graphics Inc.
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: [email protected]
DxfToIv, SlaToIv, ObjToIv, SoftimageToIv and IvToRib.
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