ACIS Assembly and Part

Use

You can import and view ACIS assembly and part (.sat) files.

The SAT format is the published format of ACIS by Spatial Technology. This format is used by different CAD/CAM-applications such as AutoCAD.

Supported:

Assembly hierarchy
File properties, Model properties
Object Attributes, color, and object names
Solid or Mesh Import
- Tessellation control with mesh import and dynamic tessellation option for solid import
- Normals and UV coordinates

Limitations:

2D vector data
Animation
Textures

Features

This format contains import options. You can use them to customize the way in which your file is opened.

Import Interface

Field	Functional Description
Common	Defines the general settings including tessellation (arrangement and density of the polygons). Note If you enter 0 (zero) for any of the tessellation settings, they are not taken into effect during the tessellation process. Geometry: Defines the geometry settings Import Metadata: Imports file metadata from the original CAD file (stored inside the file as the metadata category CADMetadata) Tessellation Settings: Defines the tessellation settings Import Splines, Surfaces, and Solids: Determines whether splines, surfaces, and solids are imported Tessellation Level: Applies different resolutions based upon preselected values for chord height ratio and normal tolerances. If you select User Defined, further options become available. Angular Tolerance: Determines the maximum angular deviation (in degrees), allowed between an analytical surface and its triangulation. Pairs of triangles do not incorporate a dihedral angle greater than this amount. For example, this setting dictates the minimum number of facets around a smaller circle or cylinder regardless of the Surface Deviation setting. This parameter gives you added control over faces with small radii. Lower values result in finer tessellations, while higher values produce coarser tessellations. Chord Height Tolerance: The value between the analytical surface and its triangulation that determines the distance and accuracy of the tessellation. The lower the value, the more accurate the result. 0.00001 is the minimum unit (high detail), and 1 000 000 is the maximum unit (low detail). Chord Height Behavior: Determines how accurately the chord height tolerance is applied. Absolute applies the chord height tolerance as it is. Scaled adjusts the values depending on the scale of the object being tessellated. Construction Geometry: Defines settings for the construction geometry Import Surfaces: Imports all construction geometry Note If a file contains sheet bodies, select this option for the file to import correctly. Import Points: Imports all 3D point data stored inside the CAD file and draws points as saved in CATIA files Import Planes: Imports all infinite 3D plane data stored inside the CAD file and draws planes as transparent mesh Import Wireframes: Imports all wireframes if any exist
Geometry Transform	Transforms (rotate, position, and scale) the scene along the X, Y, and Z axes: Rotation: Sets the degrees of rotation around each axis from 0 degrees to 360 degrees. The rotation values can be entered with up to 6 decimal places. Scale: Scales the object along the X, Y, and Z axes Position: Sets the position of the scene along the X, Y, and Z axes

Field

Functional Description

Common

Defines the general settings including tessellation (arrangement and density of the polygons).

Geometry: Defines the geometry settings

Import Metadata: Imports file metadata from the original CAD file (stored inside the file as the metadata category CADMetadata)

Tessellation Settings: Defines the tessellation settings

Import Splines, Surfaces, and Solids: Determines whether splines, surfaces, and solids are imported
Tessellation Level: Applies different resolutions based upon preselected values for chord height ratio and normal tolerances. If you select User Defined, further options become available.
- Angular Tolerance: Determines the maximum angular deviation (in degrees), allowed between an analytical surface and its triangulation. Pairs of triangles do not incorporate a dihedral angle greater than this amount. For example, this setting dictates the minimum number of facets around a smaller circle or cylinder regardless of the Surface Deviation setting. This parameter gives you added control over faces with small radii. Lower values result in finer tessellations, while higher values produce coarser tessellations.
- Chord Height Tolerance: The value between the analytical surface and its triangulation that determines the distance and accuracy of the tessellation. The lower the value, the more accurate the result. 0.00001 is the minimum unit (high detail), and 1 000 000 is the maximum unit (low detail).
- Chord Height Behavior: Determines how accurately the chord height tolerance is applied. Absolute applies the chord height tolerance as it is. Scaled adjusts the values depending on the scale of the object being tessellated.

Construction Geometry: Defines settings for the construction geometry

Import Surfaces: Imports all construction geometry

Note

If a file contains sheet bodies, select this option for the file to import correctly.
Import Points: Imports all 3D point data stored inside the CAD file and draws points as saved in CATIA files
Import Planes: Imports all infinite 3D plane data stored inside the CAD file and draws planes as transparent mesh
Import Wireframes: Imports all wireframes if any exist

Geometry Transform

Transforms (rotate, position, and scale) the scene along the X, Y, and Z axes:

Rotation: Sets the degrees of rotation around each axis from 0 degrees to 360 degrees. The rotation values can be entered with up to 6 decimal places.
Scale: Scales the object along the X, Y, and Z axes
Position: Sets the position of the scene along the X, Y, and Z axes