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Text File  |  1997-10-31  |  5KB  |  79 lines
  1. ___________________________________________________________________________
  2. AliasToIv   version 1.0     7/26/95  Copyright (c) 1995 Abaco Systems, Inc.
  3.  
  4. Call with questions    Tel: (510) 494-0690  
  5. Fremont, CA, USA       Fax: (510) 494-0893   or email: 3dsoftware@abaco.com
  6. ___________________________________________________________________________
  7.                                                                            
  8. AliasToIv converts Alias wire files to Inventor 2.0 files.                     
  9.                                                                              
  10. AliasToIv [-c complexity ] [-t texture_quality] [-v verbose_setting] [-h] [-f]  
  11.        [-n] [-p] [-k knot_epsilon] [- | <infile> [outfile] ]                 
  12. Where                                                                        
  13.    <infile>                                                                  
  14.    Alias wire file to convert. If <infile> is absent or '-' input is taken   
  15.    from stdin.                                                               
  16.                                                                              
  17.    <outfile>                                                                 
  18.    Inventor file. If <outfile> is absent output goes to stdout.              
  19.                                                                              
  20.    -h                                                                        
  21.    Display this usage guide                                                  
  22.                                                                              
  23.    -v verbose                                                                
  24.    Give feedback on conversion process according to the verbose setting.     
  25.        0 Do not print any summary. This is the default value.                
  26.        1 Print a summary of the applied options and a count list of the      
  27.          processed Alias entities.                                           
  28.        2 Print a summary of the applied options, a count list of the         
  29.          processed Alias entities, and the name of each Alias entity that    
  30.          is processed.                                                       
  31.                                                                              
  32.    -c complexity                                                             
  33.    The complexity setting to use in the inventor file. The value ranges from 
  34.    0.0 (lowest complexity) to 1.0 (highest complexity) with the default being
  35.    0.5.                                                                      
  36.                                                                              
  37.    -t texture_quality                                                        
  38.    The texture quality setting to use in the inventor file. The value ranges 
  39.    from 0.0 (lowest complexity) to 1.0 (highest complexity) with the default 
  40.    being 0.1.                                                                
  41.                                                                              
  42.    -o                                                                        
  43.    Don't convert cameras. This makes it easier to examine the models when    
  44.    they are loaded into ivview.                                              
  45.                                                                              
  46.    -f                                                                        
  47.    Use one normal for each face rather than one normal for each vertex when  
  48.    converting polysets.                                                      
  49.                                                                              
  50.    -n                                                                        
  51.    Convert all the trimming curve control vertices to non rational. Useful if
  52.    inventor won't display some of the trimmed surfaces.                      
  53.                                                                              
  54.    -p                                                                        
  55.    Convert all the trimming curves so that the first and last control        
  56.    vertices are interpolated. Useful if inventor won't display some of the   
  57.    trimmed surfaces.                                                         
  58.                                                                              
  59.    -k knot_epsilon                                                           
  60.    Inventor has problems tesselating surfaces if the knots are close together
  61.    If a knot_epsilon is specified, the knot vector will be scaled so that the
  62.    knots are no closer together than knot_epsilon.                           
  63.  
  64. LIMITATIONS
  65.     Texture
  66.     1. Only the first texture attached to a shader is converted.
  67.     2. Procedural textures are not converted.
  68.  
  69.     Shaders
  70.     1. Only the first shader attached to a surface or face is converted.
  71.  
  72.     Lights
  73.     1. If a surface or face was linked to an exclusive light it will be
  74.        illuminated by both that light and all non-exclusive lights.  However, it
  75.        should only be illuminated by the exclusive light.  To implement this in
  76.        Inventor, the surface or face would have to be removed from the
  77.        hierarchy. It was decided that this was undesirable.
  78.     2. Area lights and linear lights are not converted.
  79.