SAT

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In terms of the history of the file format, changes were (and continue to be) introduced with each new version of ACIS. The file specifies which version it was created for, so the format is backwards-compatible.
 
In terms of the history of the file format, changes were (and continue to be) introduced with each new version of ACIS. The file specifies which version it was created for, so the format is backwards-compatible.
 +
 +
Though it is readable in plain text, the file format does not lend itself very well for editing. Objects represented through the file can be quite confusing. For example, if you wanted to create a cone, you need to provide some arguments to the cone entity, but what those arguments are is not very clear. This format should mainly be edited through the ACIS program.
  
 
'''Example(s):''' [[Example::SAT Example 1]] , [[Example::SAT Example 2]]
 
'''Example(s):''' [[Example::SAT Example 1]] , [[Example::SAT Example 2]]
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'''Documentation:''' [[Documentation::SAT Documentation]]  
 
'''Documentation:''' [[Documentation::SAT Documentation]]  
  
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'''File Extensions:''' [[File Extension::SAT]}
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'''File Extensions:''' [[File Extension::SAT]]
  
 
'''Applications:'''  
 
'''Applications:'''  
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* '''Native application(s):''' [[Native Application::ACIS]]  
 
* '''Native application(s):''' [[Native Application::ACIS]]  
  
−
* '''Interoperable applications:''' [[Interoperable Application::Engineering Format Application Template]] - Applications which can read or write files of this format, but are not native applications for the format.
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* '''Interoperable applications:''' [[Interoperable Application::Applications with ACIS]]  
  
 
'''Magic numbers:''' [[Magic Numbers::None]]  
 
'''Magic numbers:''' [[Magic Numbers::None]]  
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*** '''Implicit curves:'''  
 
*** '''Implicit curves:'''  
 
**** '''Is Supported:''' [[File Classification Implict Curves - Is Supported::false]]  
 
**** '''Is Supported:''' [[File Classification Implict Curves - Is Supported::false]]  
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**** '''Description:''' [[File Classification Implicit Curves - Description::Various types of curves can be defined by their parameters ([http://doc.spatial.com/r19/index.php/Curve#Curve_Types]), but curves cannot be defined implicitly.]]  
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**** '''Description:''' [[File Classification Implicit Curves - Description::Various types of curves can be defined by their parameters ([http://doc.spatial.com/r19/index.php/Curve#Curve_Types]), but curves cannot be defined implicitly]]  
−
*** '''Point set:''' - Can the format support point sets? Example: A format that supports surfaces and lines that are generated by points that form triangles supports point sets.
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*** '''Point set:'''  
−
**** '''Is Supported:''' [[File Classification Point Set - Is Supported::]] - Is the feature supported in the engineering format?
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**** '''Is Supported:''' [[File Classification Point Set - Is Supported::true]]  
−
**** '''Description:''' [[File Classification Point Set - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Point Set - Description::A point is a type of entity]]
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** '''Mesh:''' - Section describes whether or not the engineering format supports mesh.
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** '''Mesh:'''  
−
*** '''Manifold surface meshes:''' - Can the format support manifold surface meshes? Example: A format that supports surfaces that are mathematical spaces in which every point has a neighborhood which resembles Euclidean space
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*** '''Manifold surface meshes:'''  
−
**** '''Is Supported:''' [[File Classification Mainfold Surface Meshes - Is Supported::]] - Is the feature supported in the engineering format?
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**** '''Is Supported:''' [[File Classification Mainfold Surface Meshes - Is Supported::true]]  
−
**** '''Description:''' [[File Classification Manifold Surface Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Manifold Surface Meshes - Description::A mesh can be defined explicitly]]  
−
*** '''Manifold volume meshes:''' - Can the format support manifold volume meshes? Example: A format that supports volumes that are mathematical spaces in which every point has a neighborhood which resembles Euclidean space
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*** '''Manifold volume meshes:'''  
−
**** '''Is Supported:''' [[File Classification Manifold Volume Meshes - Is Supported::]] - Is the feature supported in the engineering format?
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**** '''Is Supported:''' [[File Classification Manifold Volume Meshes - Is Supported::true]]  
−
**** '''Description:''' [[File Classification Manifold Volume Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Manifold Volume Meshes - Description::A mesh can be defined explicitly]]  
−
*** '''Non-manifold meshes:''' - Can the format support non-manifold meshes? Example: A format that supports meshes that are not manifolds
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*** '''Non-manifold meshes:'''  
−
**** '''Is Supported:''' [[File Classification Non-manifold Meshes - Is Supported::]] - Is the feature supported in the engineering format?
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**** '''Is Supported:''' [[File Classification Non-manifold Meshes - Is Supported::true]]  
−
**** '''Description:''' [[File Classification Non-manifold Meshes - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Non-manifold Meshes - Description::A mesh can be defined explicitly]]
−
** '''Parametric representation:''' - Section describes whether or not the engineering format supports parametric representations.
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** '''Parametric representation:'''.
−
*** '''Parametric surfaces:''' - Can the format support parametric surfaces? Example: A format that can contain surfaces that are generated with parametric equations supports parametric surfaces.
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*** '''Parametric surfaces:'''  
−
**** '''Is Supported:''' [[File Classification Parametric Surfaces - Is Supported::]] - Is the feature supported in the engineering format?
+
**** '''Is Supported:''' [[File Classification Parametric Surfaces - Is Supported::false]]  
−
**** '''Description:''' [[File Classification Parametric Surfaces - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Parametric Surfaces - Description::Surfaces can be defined by their parameters, but not by parametric equations]]  
−
*** '''Parametric curves:''' - Can the format support parametric curves? Example: A format that can contain curves that are generated with parametric equations supports parametric curves.
+
*** '''Parametric curves:'''  
−
**** '''Is Supported:''' [[File Classification Parametric Curves - Is Supported::]] - Is the feature supported in the engineering format?
+
**** '''Is Supported:''' [[File Classification Parametric Curves - Is Supported::true]]
−
**** '''Description:''' [[File Classification Parametric Curves - Description::]] - This field is used to describe the support or lack of support of the feature.
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**** '''Description:''' [[File Classification Parametric Curves - Description::Parametric curves can be defined as entities]]  
−
** '''Contour sets:''' - Can the format support contour sets?
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** '''Contour sets:'''  
−
*** '''Is Supported:''' [[File Classification Contour Sets - Is Supported::]] - Is the feature supported in the engineering format?
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*** '''Is Supported:''' [[File Classification Contour Sets - Is Supported::false]]  
−
*** '''Description:''' [[File Classification Contour Sets - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification Contour Sets - Description::Not supported]]  
−
** '''NURBS:''' - Can the format support Non Uniform Rational Basis Splines? Examples: The engineering formats IGES, STEP, ACIS, and PHIGS
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** '''NURBS:'''  
−
*** '''Is Supported:''' [[File Classification NURBS - Is Supported::]] - Is the feature supported in the engineering format?
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*** '''Is Supported:''' [[File Classification NURBS - Is Supported::true]]
−
*** '''Description:''' [[File Classification NURBS - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification NURBS - Description::NURBS can be defined]]
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* '''Multi-resolution models:''' - Can the format support models with multiple resolutions? Examples: A format that supports a highly detailed and lowly detailed model simultaneously supports multi-resolution models.
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* '''Multi-resolution models:'''  
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** '''Is Supported:''' [[File Classification Multi-resolution Models - Is Supported::]] - Is the feature supported in the engineering format?
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** '''Is Supported:''' [[File Classification Multi-resolution Models - Is Supported::false]]
−
** '''Description:''' [[File Classification Multi-resolution Models - Description::]] - This field is used to describe the support or lack of support of the feature.
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** '''Description:''' [[File Classification Multi-resolution Models - Description::The resolution is defined in the header of the file]]
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* '''Dynamics:''' - Section describes whether or not the engineering format supports dynamics.
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* '''Dynamics:'''
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** '''Kinematics:''' - Can the format support kinematics? Example: Does the format allow model parts to rotate?
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** '''Kinematics:'''  
−
*** '''Is Supported:''' [[File Classification Kinematics - Is Supported::]] - Is the feature supported in the engineering format?
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*** '''Is Supported:''' [[File Classification Kinematics - Is Supported::true]]  
−
*** '''Description:''' [[File Classification Kinematics - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification Kinematics - Description::Entities can be rotated]]  
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** '''Assembly:''' - Can the format support assembly? Example: Does the format allow the assembly instructions to be explicitly specified with a model?
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** '''Assembly:'''  
−
*** '''Is Supported:''' [[File Classification Assembly - Is Supported::]] - Is the feature supported in the engineering format?
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*** '''Is Supported:''' [[File Classification Assembly - Is Supported::true]]
−
*** '''Description:''' [[File Classification Assembly - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification Assembly - Description::An entity can be assembled from many other entities]]
−
** '''Force(s):''' - Can the format support forces? Example: Does the format support acceleration forces?
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** '''Force(s):'''
−
*** '''Is Supported:''' [[File Classification Force - Is Supported::]] - Is the feature supported in the engineering format?
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*** '''Is Supported:''' [[File Classification Force - Is Supported::false]]
−
*** '''Description:''' [[File Classification Force - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification Force - Description::May be supported through extensions to the system]]  
−
* '''Boundary representation''' - Can the format support models with boundary representations?
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* '''Boundary representation'''  
−
** '''Manifold surface boundary representations:''' - Can the format support manifold surface boundary representations? Example: The engineering format STEP
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** '''Manifold surface boundary representations:'''  
−
*** '''Is Supported:''' [[File Classification Manifold Surface Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+
*** '''Is Supported:''' [[File Classification Manifold Surface Boundary Representation - Is Supported::true]]  
−
*** '''Description:''' [[File Classification Manifold Surface Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
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*** '''Description:''' [[File Classification Manifold Surface Boundary Representation - Description::The boundary is made from a closed set of defined surfaces.]]
−
** '''Manifold volume boundary representations:''' - Can the format support manifold volume boundary representations? Example: The engineering format STEP
+
** '''Manifold volume boundary representations:'''
−
*** '''Is Supported:''' [[File Classification Manifold Volume Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+
*** '''Is Supported:''' [[File Classification Manifold Volume Boundary Representation - Is Supported::true]]  
−
*** '''Description:''' [[File Classification Manifold Volume Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
+
*** '''Description:''' [[File Classification Manifold Volume Boundary Representation - Description::The boundary is made from a closed set of defined surfaces.]]
−
** '''Non-manifold boundary representations:''' - Can the format support non-manifold boundary representations? Example: The engineering format STEP
+
** '''Non-manifold boundary representations:'''
−
*** '''Is Supported:''' [[File Classification Non-manifold Boundary Representation - Is Supported::]] - Is the feature supported in the engineering format?
+
*** '''Is Supported:''' [[File Classification Non-manifold Boundary Representation - Is Supported::true]]  
−
*** '''Description:''' [[File Classification Non-manifold Boundary Representation - Description::]] - This field is used to describe the support or lack of support of the feature.
+
*** '''Description:''' [[File Classification Non-manifold Boundary Representation - Description::The boundary is made from a closed set of defined surfaces.]]
−
* '''Material transparency:''' - Can the format support transparency? Example: Does the format allow models to have a clear window in a car?
+
* '''Material transparency:'''  
−
** '''Is Supported:''' [[File Classification Material Transparency - Is Supported::]] - Is the feature supported in the engineering format?
+
** '''Is Supported:''' [[File Classification Material Transparency - Is Supported::true]]  
−
** '''Description:''' [[File Classification Material Transparency - Description::]] - This field is used to describe the support or lack of support of the feature.
+
** '''Description:''' [[File Classification Material Transparency - Description::Surfaces can be transparent]]  
  
−
'''References:''' [[References::]] - A list of references regarding any aspects of this engineering format; any reading material supplemental to this page.
+
'''References:'''
 +
*[http://www.spatial.com/products/3d-acis-modeling Spatial Corporation's product page for ACIS]
 +
*[http://doc.spatial.com/ Documentation for ACIS]
 +
*[http://doc.spatial.com/r19/index.php/SAT_Save_and_Restore Details on saving SAT file]
 +
*[http://doc.spatial.com/r19/index.php/Entity Details on Entities in ACIS system]
 +
*[http://www.mcnpvised.com/CAD/CAD.html Tutorial page with two SAT files]
 +
*[http://local.wasp.uwa.edu.au/~pbourke/dataformats/sat/sat.pdf Details on SAT file format]
 +
*[http://en.wikipedia.org/wiki/ACIS The wikipedia page for ACIS]

Latest revision as of 17:43, 13 May 2009

Title(s): Standard ACIS Text (SAT)

Version ID: R19 (SP3)

Date released: 2009-03-19

Date: 1989-??-??

Creator(s): Charles Lang and Ian Braid; Three-Space Ltd.

Contributor(s): Spatial Corporation

Relationships:

  • Syntax Format(s): None

Description: SAT is the ASCII version of a file used by the ACIS modeling system. It has a binary analog called SAB (Standard ACIS Binary).

The ACIS modeling system is currently maintained by the Spatial Corporation. The system allows 3D modeling, 3D model management, and 3D model visualization. The system also allows extensions that provide additional functionality. ACIS is used in a variety of industries, including CAD, CAM, CAE, AEC, animation, and shipbuilding. For more details on the ACIS modeling system, see this site.

History: The ACIS modeling system began life as Romulus, created by Ian Braid and Charles Lang in 1982. Romulus was the first commercial solid modeling kernel designed for integration into CAD systems and was licensed by several CAD software vendors, including HP and Siemens. In 1986, Three-Space Ltd. (founded by Braid and Lang) was retained by Spatial Technology (now known as Spatial Corporation) to create the ACIS modeling system.

In terms of the history of the file format, changes were (and continue to be) introduced with each new version of ACIS. The file specifies which version it was created for, so the format is backwards-compatible.

Though it is readable in plain text, the file format does not lend itself very well for editing. Objects represented through the file can be quite confusing. For example, if you wanted to create a cone, you need to provide some arguments to the cone entity, but what those arguments are is not very clear. This format should mainly be edited through the ACIS program.

Example(s): SAT Example 1 , SAT Example 2

Identifier: [[Identifier::[1]]]

Documentation: SAT Documentation

File Extensions: SAT

Applications:

  • Native application(s): ACIS

Magic numbers: None

Format(s): The file is organized as follows:

  • The header record consisting of various information, including:
    • The version number
    • The number of saved entities
    • The ID of the product that produced the file
    • The date that the file was produced on
    • Tolerance values of the application that produced the file
  • Entity records. Each entity is an object in the ACIS system. For more info on entities, see [2].
  • History records (if any)
  • "End-of-ACIS-data" terminator

The header record should not be modified except by the program saving the file.

Rights: Proprietary License

Sustainability Factors:

  • Self-documentation: None.
  • External dependencies: ACIS
  • Technical protection considerations: None.

Typical use: CAD, CAM, CAE

File classification:

References:

Retrieved from "http://gicl.cs.drexel.edu/wiki-data/index.php?title=SAT&oldid=31710"
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