AliasToIv(1)
AliasToIv - convert an Alias wire file to Open Inventor 2.0 format
As shipped in IRIX 6.5.7. Unchanged since IRIX 6.5.
NAME AliasToIv - convert an Alias wire file to Open Inventor 2.0 format SYNOPSIS AliasToIv [-h] [-o] [-f] [-n] [-p] [-c object_complexity] [-t texture_quality] [-k knot_epsilon] <infile> [outfile] DESCRIPTION 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 non- rational. 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. -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). KNOWN BUGS 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 lights. 2. Area lights and linear lights are not converted. FILES /usr/Inventor/bin/AliasToIv Program file TRADEMARKS Alias is a trademark of Alias Research Inc., Open Inventor is a trademark of Silicon Graphics Inc. COPYRIGHTS 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 DxfToIv, SlaToIv, ObjToIv, SoftimageToIv and IvToRib.