ACIS Reader

Supported Entities

Entities supported by the ACIS reader.
  • Coordinate systems
  • Free points
  • Free curves
  • Surfaces
  • Quilt bodies
  • Solid bodies

Import Options

The ACIS reader uses the ct_reader.ini file.
@AttributesAsMetadata
Value Description
on

Import all generic attributes (global and related to single entities) as metadata.
off Do not import attributes related to single entities. Only import global attributes.
%attribute1%attribute2%attribute3

Import specified generic attributes as metadata.

The attribute names are listed, separated by a character that you choose, and inserted as the first element of the string. The example uses '%' as a separator. You can choose another character as a separator, in case one of the listed attribute names contains '%'. HyperMesh CFD will recognize it as it is the first character of the string.
@AvoidThirdPartyConversion
Value Description
on Avoid using the conversion functions provided by third-party (default).
off Use the conversion functions provided by third-party.
@BodyIdAsMetadata
Value Description
on Assign body identifier as metadata.

BODY_ID
off Do not assign body identifier as metadata (default).
@CleanupTol
Value Description
double A negative value (default) indicates to use the auto cleanup tolerance. A value greater than the calculated auto cleanup tolerance indicates to use that specific tolerance. Refer to the CAD Cleanup Tolerance.
@ColorsAsMetadata
Value Description
integer

Read color attributes of geometric entities as metadata with integer values.

COLOR_RGB
on

Read color attributes of geometric entities as metadata.

COLOR_RGB
off Do not read color attributes (default).
@CreationType
Value Description
Parts Generate a full part-based hierarchy.
BOMOnly Generate an empty part-based hierarchy.
TreeOfComponents Generate an assemblies/components based hierarchy.
PackIntoSinglePart Consolidate hierarchy into a single part.
@DensityAsMetadata
Value Description
on

Read density value as metadata (default).

DENSITY
off Do not read density value.
@DoNotMergeEdges
Value Description
on Preserve the original geometry edges, instead of merging them together during the import cleanup phase.
off Merge edges together during the import cleanup phase (default).
@ImportBlanked
Value Description
on Import entities that are hidden, blanked, or no show.
off Do not import entities that are hidden, blanked, or no show (default).
@ImportCoordinateSystems
Value Description
on Import CAD coordinate systems as system collectors (default).
off Do not import CAD coordinate systems.
@ImportForVisualizationOnly
Value Description
on

Import the model for visualization purposes only.

This skips many of the import steps (cleanup, stitching, solid creation, and so on) to provide a faster import. The resulting model may not be suitable for other uses.
off Import the model in the normal fashion (default).
@ImportFreeCurves
Value Description
on Import free curves (wireframe entities) into the model (default).
off Do not import free curves.
@ImportFreePoints
Value Description
on Import free points into the model (default).
off Do not import free points.
@LayerAsMetadata
Value Description
on Read layer value as metadata.

LAYER
off Do not read layer value (default).
@LegacyHierarchyAsMetadata
Value Description
on Generate metadata with the original CAD hierarchy within the part.

LEGACY_HIERARCHY
off Do not generate metadata with the original CAD hierarchy within the part (default).
@MetadataPrefix
Value Description
string The string is prefixed to all metadata names. No prefix is used by default.

See CAD Metadata Naming for more details.
@OriginalIdAsMetadata
Value Description
on Import original CAD entity IDs as metadata.

ORIGINAL_ID
off Do not import original CAD entity IDs as metadata (default).
@ScaleFactor
Value Description
double Define the model scaling factor during import.

Default is 1.0.
@ShrinkSurfaces
Value Description
on For trimmed surfaces, shrink the corresponding base surfaces to only enclose the extents of the external trimming contour, plus a narrow frame.
off Do not modify the base surfaces (default).
@SkipCreationOfSolid
Value Description
on Read surfaces, but do not create solid entities.
off Create solid entities (default).
@SplitComponents
Value Description
Body Generate body-based component (default if CreationType=Parts).
Layer Generate layer-based component.
Part Generate part-based component.
General Keep component as in CAD (default if CreationType=TreeOfComponents).
@StitchingAcrossBodies
Value Description
on Stitch surfaces belonging to different components.
off Do not stitch surfaces belonging to different components (default).
@UseParasolidNativeReader
Value Description
on Use the Parasolid reader to read embedded XT breps (default).
off Also use the standard JT reader to read XT breps.
@TargetUnits
Value Description
CAD units Keep the units of the CAD files (default for GUI).
MKS [m kg N s] Convert to the corresponding units system.
MMKS [mm kg N s] Convert to the corresponding units system.
MPA [mm t N s] Convert to the corresponding units system.
CGS [cm g dyn s] Convert to the corresponding units system.
MMKNMS [mm kg kN ms] Convert to the corresponding units system.
MMGNMS [mm g N ms] Convert to the corresponding units system.
IPS Std [in pounds lbf s] Convert to the corresponding units system.
IPS Grav [in slinch lbf s] Convert to the corresponding units system.
FPS Std [ft pounds lbf s] Convert to the corresponding units system.
FPS Grav [ft slug lbf s] Convert to the corresponding units system.
Scale factor Apply the corresponding scale factor (default for no GUI to allow supporting legacy scripts).

Supported Metadata

Metadata generated from the ACIS reader.
BODY_ID
Type Entities Description
string
  • points
  • lines
  • surfs
 Identifier of the CAD body containing the entity.

Generated when @BodyIDAsMetadata=on
COLOR_RGB
Type Entities Description
string comps, assems if hierarchy as Assemblies; parts if hierarchy as Parts

Three RGB values, ranging from 0 to 255, indicating the color of the entity in the CAD model.

Generated when @ColorsAsMetadata = on
DENSITY
Type Entities Description
double solids

The value of the density of a solid.

Generated when @DensityAsMetadata = on
LAYER
Type Entities Description
integer
  • points
  • lines
  • surfs
  • solids
 Value of the layer of an entity.

Generated when @LayerAsMetadata=on
LEGACY_HIERARCHY
Type Entities Description
string
  • points
  • lines
  • surfs
 Hierarchy of an entity within a part.

Generated when @LegacyHierarchyAsMetadata=on
MODELUNIT
Type Entities Description
integer comps if hierarchy as Assemblies; parts if hierarchy as Parts Model units specified in the CAD file.
  • 1 = inches
  • 2 = millimeters
  • 4 = feet
  • 5 = miles
  • 6 = meters
  • 7 = kilometers
  • 8 = mils
  • 9 = microns
  • 10 = centimeters
  • 11 = microinches
  • 12 = decimeters
  • 13 = yards

This is always generated.
ORIGINAL_ID
Type Entities Description
ORIGINAL_ID
  • points
  • lines
  • surfs
  • solids
  • parts

The original CAD entity ID.

Generated when @OriginalIdAsMetadata = on