AC

From GICL Wiki
Revision as of 17:42, 13 May 2009 by ChristopherGore (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search


Title(s): - AC


Version ID: - 6.4


Date released: -


Date: - 1994


Creator(s): Entity Template - Amiga


Contributor(s): - Amiga, Inivis Limited


Relationships: - Inivis Limited


  • Previous Version(s): - Any engineering format that is a previous version format of this one.


  • Contains: - N/A


  • Syntax Format(s): - N/A


  • Family Format(s): - N/A


Description: - .ac files are used for 3D scenes in the AC3D software


History: - Created by Amiga in 1994, bought by Inivis Limited in 2002


Example(s): Example Template -

 AC3Db 
 MATERIAL "" rgb 1 1 1  amb 0.2 0.2 0.2  emis 0 0 0  spec 0.5 0.5 0.5  shi 10  trans 0 
 OBJECT world 
 kids 1 
 OBJECT poly 
 name "rect" 
 loc 1 0.5 0 
 numvert 4 
 -1 0.5 0 
 1 0.5 0 
 1 -0.5 0 
 -1 -0.5 0 
 numsurf 1 
 SURF 0x20 
 mat 0 
 refs 4 
 3 0 0 
 2 1 0 
 1 1 1 
 0 0 1 
 kids 0 


Identifier: - http://en.wikipedia.org/wiki/AC3D http://www.inivis.com/ac3d/man/ac3dfileformat.html


Documentation: Documentation Template - http://www.inivis.com/ac3d/man/ac3dfileformat.html


File Extensions: - ac


Applications: - AC3D




Magic numbers: - N/A


Format(s): - N/A


Rights: -


Sustainability Factors: - Facts about the sustainability of this particular engineering format.


  • Standardization: - N/A


  • Adoption: - Adopted for FlightGear flight simulator


    • Licensing and patent claims: - Any licenses or patent claims that the engineering format makes.


  • Self-documentation: - Any self-documentation capabilities of the format.


  • External dependencies: - Anything that the format depends on outside of its control to function.


  • Technical protection considerations: - Any considerations that are necessary when it comes to technical protection.


Typical use: - CGI, CAD, Game Development


File classification: - Specific properties that pertain to this engineering format.

  • Type {Binary, Text}: - Text
  • Raster data: - Section describes whether or not the engineering format supports raster data.
    • Raster data 2D: - Can the format support 2D raster data? Example: A format that can contain 2D pixelated data supports 2D raster data.
      • Is Supported: - No
      • Description: - Cannot rasterize 2D data
    • Raster data 3D: - Can the format support 3D raster data? Example: A format that can contain 2D pixelated data of a 3D model supports 3D raster data.
      • Is Supported: - No
      • Description: - This field is used to describe the support or lack of support of the feature.
  • Geometric representation: - Section describes whether or not the engineering format supports geometric representations.
    • Implicit representation: - Section describes whether or not the engineering format supports implicit representations.
      • Implicit surfaces: - Can the format support implicit surfaces? Example: A format that can contain surfaces that are generated with mathematical equations that contain the independent variables x, y, and z, like x^2 + y^2 + z^2 * R^2 = 0, supports implicit surfaces.
        • Is Supported: - Yes
        • Description: - This field is used to describe the support or lack of support of the feature.
      • Implicit curves: - Can the format support implicit curves? Example: A format that can contain curves that are generated with mathematical equations that contain the independent variables x, y, and z, supports implicit curves.
        • Is Supported: - Yes
        • Description: - This field is used to describe the support or lack of support of the feature.
      • 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.
        • Is Supported: - Yes
        • Description: - Uses a set of points to generate a polygon
    • Mesh: - Section describes whether or not the engineering format supports 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
        • Is Supported: - No
        • Description: - This field is used to describe the support or lack of support of the feature.
      • 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
        • Is Supported: - No
        • Description: - This field is used to describe the support or lack of support of the feature.
      • Non-manifold meshes: - Can the format support non-manifold meshes? Example: A format that supports meshes that are not manifolds
        • Is Supported: - Yes
        • Description: - This field is used to describe the support or lack of support of the feature.
    • Parametric representation: - Section describes whether or not the engineering format supports parametric representations.
      • Parametric surfaces: - Can the format support parametric surfaces? Example: A format that can contain surfaces that are generated with parametric equations supports parametric surfaces.
        • Is Supported: - Yes
        • Description: - This field is used to describe the support or lack of support of the feature.
      • Parametric curves: - Can the format support parametric curves? Example: A format that can contain curves that are generated with parametric equations supports parametric curves.
        • Is Supported: - Yes
        • Description: - This field is used to describe the support or lack of support of the feature.
    • Contour sets: - Can the format support contour sets?
      • Is Supported: - Yes
      • Description: - This field is used to describe the support or lack of support of the feature.
    • NURBS: - Can the format support Non Uniform Rational Basis Splines? Examples: The engineering formats IGES, STEP, ACIS, and PHIGS
      • Is Supported: - Yes
      • Description: -
  • 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.
    • Is Supported: - Yes
    • Description: - This field is used to describe the support or lack of support of the feature.
  • Dynamics: - Section describes whether or not the engineering format supports dynamics.
    • Kinematics: - Can the format support kinematics? Example: Does the format allow model parts to rotate?
      • Is Supported: - Yes
      • Description: - This field is used to describe the support or lack of support of the feature.
    • Assembly: - Can the format support assembly? Example: Does the format allow the assembly instructions to be explicitly specified with a model?
      • Is Supported: - Yes
      • Description: - Format allows grouping of objects
    • Force(s): - Can the format support forces? Example: Does the format support acceleration forces?
      • Is Supported: - No
      • Description: - This field is used to describe the support or lack of support of the feature.
  • Boundary representation - Can the format support models with boundary representations?
    • Manifold surface boundary representations: - Can the format support manifold surface boundary representations? Example: The engineering format STEP
      • Is Supported: - No
      • Description: - This field is used to describe the support or lack of support of the feature.
    • Manifold volume boundary representations: - Can the format support manifold volume boundary representations? Example: The engineering format STEP
      • Is Supported: - No
      • Description: - This field is used to describe the support or lack of support of the feature.
    • Non-manifold boundary representations: - Can the format support non-manifold boundary representations? Example: The engineering format STEP
      • Is Supported: - Yes
      • Description: - This field is used to describe the support or lack of support of the feature.
  • Material transparency: - Can the format support transparency? Example: Does the format allow models to have a clear window in a car?
    • Is Supported: - Yes
    • Description: - Transparency can be specified.


References: -

http://en.wikipedia.org/wiki/AC3D http://www.inivis.com/ac3d/man/ac3dfileformat.html