INFO: Why a Local Expression May Resemble a Global Expression
  
PSS ID Number: Q173737
Article last modified on 09-12-1997
 
IRIX:3.51,3.7; WINDOWS NT:3.51,3.7
 
IRIX NT WINDOWS
 

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The information in this article applies to:
 
 - Softimage 3D for IRIX, versions 3.51, 3.7
 - Softimage 3D for Windows NT, versions 3.51, 3.7
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SUMMARY
=======
 
There are two types of coordinate systems that exist in expressions: global
and local.
 
 - Global is the Softimage global coordinate system that has the following
   values:
 
   Translation = 0 for x,y,z
   Rotation = 0 for x,y,z
   Scaling = 1 for x,y,z
 
 - Local is the coordinate system of the parent object. If you do not have
   a parent, the expression behaves like a global expression. If you do
   have a parent, the expression uses the center of the parent as the
   coordinate system.
 
The local coordinate is not defined by the center of the object, in fact,
the local coordinate system is define by the transformation of the parent
object.
 
REFERENCES
==========
 
If you have any questions concerning the information contained in this
article, contact support@softimage.com by e-mail.
 
Additional query words: si si3d si3dmot
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Version           : IRIX:3.51,3.7; WINDOWS NT:3.51,3.7
Platform          : IRIX NT WINDOWS
Issue type        : kbinfo
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Copyright Microsoft Corporation 1997.