File > Export > Active as

The window displays different options based on the file format you choose. Note that some file formats have no options.This tool has the same options as File > Export > Active as

DWG export options

Want curves

Split surface at internal discontinuity

If Split Surfaces at internal discontinuities is ON and a surface has G1 discontinuities, it will be divided at each G1 discontinuity break.

DXF export options

Want curves

Split surface at internal discontinuity

If Split Surfaces at internal discontinuities is ON and a surface has G1 discontinuities, it will be divided at each G1 discontinuity break.

EAI VisProducts export options

Organize Data By

SHADER type data is one DirectModel node object (.jt file) generated for each AliasStudio shader.

GEOMETRY type data is one DirectModel mode object (.jt file) generated for each geometry object. There is a one to one correspondence between a geometry object and its direct mode part.

When selecting the GEOMETRY option the UI will update displaying the Export Curves option.

Create A Single File

The default is ON so that wire files are converted into an assembly file and a directory containing a file per part. This limits the flexibility of VisConcept, so it is generally not recommended as a translation method.

This option is known in the command-line interface as Single DirectModel file (-g).

Export Curves

This option is visible only when you have set the Organize Data By option to GEOMETRY. The default is ON so that 3D curves and curves on surface are exported.

Export Lights

The default is ON so that all light information is exported. This forces the translator to process AliasStudio lights.

Export Cameras

The default is ON so that a PLM-XML file containing the camera information is saved along with the JT file. The PLM-XML file has the same name as the JT file but an extension of .plmxml. It can be imported into Vis Mockup 4.1, a visualization application, along with the JT file, to provide view information.

Export Shaders

The default is ON so that all shader information is exported. If OFF, the translator ignores shader information.

This option is known in the command-line interface as Output shaders option (-j).

Export Textures

The default is ON so that all the texture information is exported. If OFF, the translator ignores texture information.

Create Logfile

The default is ON so that a log file is generated. The Log file contains the time of the conversion, and the names and types of converted objects.

Stitch Surfaces

The default is OFF. If ON the B-Rep faces are sewn together along shared edges within a single part. This eliminates some problems with gaps between surfaces. However, this does not sew edges between two adjacent parts - just between surfaces within a single part.

This option is known in the command-line interface as Turn on sewing option (-q), where it sews faces.

Scale Factor

The default value is 1.0. 0.5 reduces the size by half, 2.0 makes it twice as large. This allows you to manipulate the scale on export.

Texture Image Resolution

The default is 128. This specifies texture file image resolution and is used during 3D (Solid or Environment) texture conversions. Valid resolutions are 8 to 8192.

> EAI VisProducts - EAI Tessellation Options

DirectModel Tesselator

The Use One LOD option allows you to define the parameters for the tessellation. To get the parameters from a configuration file (-r option), you may select Use Configuration File.

Resolution

> EAI VisProducts - User Defined Parameters

Angular Value

The default value is 20 degrees. The Angular Value limits the absolute maximum angle between two adjacent line segments in a curve approximation. The Angular Value maintains surface quality as the size of the part changes, but can also preserve high numbers of polygons in very small parts.

This option is known in the command-line interface as Angular value option -a <angular>.

Chordal Value

The default value is 0.5 units where the units are defined by the modeling software. The Chordal Value defines the maximum absolute distance that a line segment may deviate from the smooth curve that it is approximating. In general, the higher the Chordal Value, the lower the number of polygons resulting from tessellation. If you use the configuration file instead of the command-line to pass parameters, you can use the Chordal Value option to define if this is applied as an absolute or relative value. If relative then it's treated as a fraction of each part's size.

This option is known in the command-line interface as Chordal value option -c <chordal>.

Edge Length

The default value is 10 units. The Edge Length limits the maximum length of any triangle edge used to tessellate a surface. For example, a value of 2 indicates that none of the edges in the triangles generated during tessellation will be more than two units long. If you use the configuration file instead of the command line to pass parameters, you can use the EdgeOption to define if this is applied as an absolute or relative value.

This option is known in the command-line interface as Edge length option -n <length>.

> EAI VisProducts - Alias Tessellation

Tessellate

When ON, this option uses the AliasStudio Tessellation instead of the DirectModel Tessellation to create polygons. Polygons are then stored in the DirectModel file.

This option is known in the command-line interface as Tessellate using Alias Tessellation (-t).

Tesselation Tolerance

UNIGRAPHICS export options

Thicken sheet

If checked, the sheet will be thickened to a solid with the thickness specified by the Thicken Amount.

Thicken Amount

Amount by which the sheet will be thickened. The slider range is from 0.01 to 100, although larger values can be entered.

Output Units

Keep MultiKnots

A multi-knot consists of multiple edit points at the same location in space. Multi-knots are usually the result of curve or surface editing operations that require a sharp turn in a curve. Note: many CAD packages will not accept models with multi-knots. Default is ON.

Parameterize planes

By default, the planes will be NURBS planes. If this option is ON, the plane surfaces (trimmed or not trimmed) will be converted to UG bounded planes.

Convert Categories

Logfile output

If chosen a report containing a list of path names of imported files, a list of warnings and/or error messages, a detailed entity mapping report and a table that documents the number of each type of entity processed during the import, will be produced

Export UG Distance Value

When ON the user can select the UG distance tolerance that will be set in the UG part file. When OFF the length distance is calculated from the AliasStudio curve fit distance.

Unigraphics Attribute Information

DBVIEW export options

Output format

Surface Tessellation options - Tessellate

This value specifies the amount the polygonal surface can deviate from the original NURBS surface.

Tessellation Tolerance

This option is only visible if Tessellate has been turned on. The default value is 0.1.

CATIA V4 export options

Extended Log File

If ON and the model is a.CAI file, then the model will be imported with the capacity to view the extended log file. If OFF, the model is imported without the ability to view the extended log file.

Include Comments

CAI File Header Information - Edit File Header

When you click this field, a File Header Information menu is displayed with fields specific to the file format you've chosen. Use these fields to communicate information about the model being exported and the sender and receiver of the data. This information is exported in the file header of the file.

CAI File Header Information -Edit File Comments

When you click in this field, an editor window is displayed where you can type comments specific to the file you are saving. This editor window can be specified in the General section of Preferences > General Preferences

CATIA V5 export options

Keep Topology

Export By Layer

Convert layers to open body/geometrical sets. The default is off (no conversion).

Export invisible

By default, Alias invisible geometric entities are converted to CATIA invisible (hidden) entities. When OFF (-v option specified for AlToC5), Alias invisible geometric entities are ignored and are not converted.

Export symmetry

When ON (-b option specified for AlToC5), if an AliasStudio layer has symmetry ON, this information is processed and the geometric objects resulting from the layer's symmetry are converted.

Divide multiknots

When ON (-d option specified for AlToC5), a surface with multiknots is divided (split) into multiple surfaces.

Divide periodic

When ON (-c option specified for AlToC5), a periodic surface is divided (split) into multiple surfaces.

Logfile output

STEP export options

ISO10303 is a standard for exchange of product information. The standard is organized into a set of Application Protocols (AP). There are two APs that are supported in this release these being ISO10303-203 (Configuration Controlled Design) conformance classes 1-4, and ISO10303-214 (Core Data for Automotive Mechanical Design Process) conformance classes 1-2. The import and export of this data is supported via ISO10303-21 Physical file exchange.

Application Protocol

Choose either AP214 or AP203 to output the desired STEP file. The default is AP214.

Model Type

Wireframe models -- A collection of curves written out as a Wireframe model.

Manifold Shells -- A collection of stitched surfaces that do not describe a volume is saved out as a G3 Manifold Shell.

Brep Solids -- Stitched geometry that describes a closed volume is written out as a G5 Brep Solid.

Hybrid models -- A combination of wireframe, surface, manifold shells and BREP solids.

The user can save the model and all the geometry in a AliasStudio Stage, into a STEP product. This is performed by choosing the Hybrid Models option (the default).

If, because of contractual or system limitations on the receiving side, a Hybrid model cannot be used, you can select single model representations, as explained in the following table.

Any AliasStudio Geometry	Hybrid Models
Alias Shells (Closed)	G5 BREP Solids
Alias Shells (Closed/Open)	G3 Manifold Shells
Alias Surface	G2 Surface Models
Alias Curves	G2 Wireframe Models

There is an inherent loss of information outputting an Alias Shell as a wireframe.

When you do not have any shells, you can not get anything from manifold shells option. You can get the unstitched surfaces transferred by using hybrid option.

The other options are selective to shells (only), surfaces (only) or wires (only).

If the AliasStudio model is a set of trimmed surfaces; the model cannot be output as a BREP Solid.

When you choose Model Type option > Manifold Shells or Hybrid Models, two Surface Geometry options are made available.

Surface Geometry

Trim Curves

Valid when outputting Hybrid Models and G2 Surface Models, this option allows you to output either 2D (parameter space) or 3D (model space) trimming curves.

STEP Header Information

OpenInventor export options

For more information on Inventor data transfer, see AlToIV in the Utilities online documentation.

PTC Granite export options

OBJ export options

Object Groups

Output Units

Scale Factor

Surface Tesselation

Tesselate

DXF export options

You can control what to save in a Drawing Exchange Format file. This format is useful for exchanging data with many kinds of CAD and modeling systems. These options appear in the Save As File Options window.

Alias POLYSETs are written out as DXF 3DFACE entities (for triangles or quads), or closed POLYLINE entities (for polygons with greater than 4 points). All DXF entities that result from the translation of a single Alias object are assigned to a layer named after the Alias objects node name.

Output Style

When storing a DXF file, you can store three-dimensional output (3D DATA) or a flat orthographic view (2D VIEWS).

DXF does not support high degree or rational geometry. Therefore, when you save in this format, any high degree and/or rational geometry is rebuilt to be non-rational and at most cubic.

Rebuild Tolerance

Lets you adjust tolerances so that the rebuilt curves and surfaces are guaranteed to be within the specified tolerance distance from the original curve or surface.

Scale Factor

Lets you save the wire model at a scale other than it was constructed. 1.0 is the default value.

Significant Digits

Specifies the number of significant digits for coordinate data in the exported file (1 to 15, inclusive).

Output Units

Lets you choose a linear data unit, such as miles, feet, inches, mils, microinches, kilometers, meters, centimeters, millimeters, or microns.

The exported coordinate data is converted from the current linear units in AliasStudio to the unit you select. A comment is written at the top of the DXF file stating the unit.

Filename Extension

Some receiving systems require CAD files to have a specific filename extension before they can be recognized. The filename extension you specify here is appended to the filename of the exported file. The default is .dxf

DES export options

Output Units

Lets you store a DES file with either METRIC or IMPERIAL (miles, feet, inches) units of measure.

Scale Factor

Lets you save the wire model at a scale other than the scale at which it was constructed. The default is 1.0.

Filename Extension

Some receiving systems require that CAD files have a specific filename extension before they can be recognized. This filename extension specified is automatically appended to the filename of the exported file. The default is .des.

VDAFS export options

Include Comments

Determines whether or not comments entered in the Edit File Comments section (found in the VDAFS File Header Information window) are included in the exported file. The default is OFF.

Export Layers

Determines whether or not AliasStudio Layers map to VDAFS groups. The AliasStudio Layer Number is mapped to the group name. The default is OFF.

Rebuild Geometry

Modifies your models so that all curves and surfaces are compatible with CAD systems or neutral file formats that cannot fully support NURBS geometry by:

reducing high degree curves and surfaces to degree 3

making non rational curves and surfaces where rational ones existed before

When Rebuild Surface is set ON, the resulting curve or surface is forced to be at most degree three, with the weight of all CVs equal to a value of 1.

For example, if your model contains curves or surfaces that are rational (with some weights that are not equal to 1.0) or high degree (higher than cubic or bi-cubic), then it is sampled at a number of checkpoints and the data is fit with a cubic or bi-cubic, non-rational curve or surface. Knots are inserted until the fit is within the specified tolerance.

When Rebuild Geometry is set OFF, rational geometry is automatically rebuilt to be non-rational because the VDAFS format supports high degree geometry but not rational geometry.

Scale Factor

Lets you save the wire model at a scale other than it was constructed. 1.0 is the default value.

Filename Extension

Some receiving systems require that CAD files have a specific filename extension before they can be recognized. The filename extension specified here is automatically appended to the filename of the exported file.

There is no Output Units option for VDAFS because coordinate data exported to VDAFS files is always in millimeters, regardless of the linear units set in AliasStudio. This is a requirement of the VDAFS standard.

> File Header Information

If you choose the VDAFS file format, the Save Options window expands to display the following:

Edit File Header

C4 export options

Output Style

Choose to preserve surfaces or (depending on your drafting packages) convert them to curves.

If you choose to convert surfaces to curves and have set the patch precision to a number greater than the default, all isoparametric curves are stored in the file.

Include Comments

Determines whether or not comments entered in the Edit File Comments section (found in the C4 File Header Information window) are included in the exported file. The default is OFF.

Rebuild Geometry

When set OFF (default is OFF) the degree of the resulting surface and the weights on the CVs do not change.

When set ON, your models are modified so that all curves and surfaces are compatible with CAD systems or neutral file formats that cannot fully support NURBS and/or high degree geometry by:

Reducing high degree curves and surfaces to degree 3.

Making non rational curves and surfaces where rational ones existed before.

When set ON, the resulting curve or surface is forced to be at most degree 3, with the weight of all control vertices equal to a value of 1.0.

Scale Factor

Lets you save the wire model at a scale other than it was constructed. 1.0 is the default value.

Significant Digits

The number of significant digits for coordinate data in the exported file can be specified in this field. The minimum number is 1 and the maximum number is 15.

Output Units

Lets you choose either millimeters or inches as the data units used for exported coordinate data. The exported coordinate data is converted from the current linear units set in AliasStudio to the selected units. MILLIMETERS is the default.

The C4 standard allows only inches and millimeters, so these are the only two choices available.

The C4 standard requires the file extension of a C4 conforming file to be .c4x. This file extension is automatically appended to the filename of the exported file

> File header information

If you choose the C4 file format, the Save Options window expands to display the following:

Edit File Header

Edit File Comments

JAMA-IS export options

> File header information

If you choose the JAMA-IS file format, the Save Options window expands to display the following:

Edit File Header

Edit File Comments

VDAIS export options

VDAIS format is a subset of the IGES standard.

Spline Type, Output Style, Surface Type and Rebuild Geometry are automatically set to the appropriate values when you select a specific vendor from the vendor list. See Common File Format Descriptions page 44 for more information on the By Vendor window.

Spline Type

Lets you choose between B-spline or parametric forms of curves and surfaces to be created in the VDAIS file.

Output Style

Converts surfaces to curves for some drafting packages. If you choose to convert surfaces to curves and have set the patch precision to a number greater than the default, all isoparametric curves are stored in the file.

Surface Type

Determines whether trimmed surfaces are written as trimmed or bounded. The default is TRIMMED SURFACES.

For TRIMMED SURFACES, trimmed surfaces in the modeler are written as trimmed surface entities (entity 144) and (trim) surface curves are written as curve on surface entities (entity 142) in the VDAIS file.

Level Mapping

Determines the type of AliasStudio information exported as VDAIS Level information.

For LAYER, AliasStudio Layer number information associated to each entity is exported as IGES Level information in the Directory Entry of this VDAIS entity in (field number 5). In this case, AliasStudio SET information is ignored and not exported to VDAIS.

For SET, AliasStudio Set information is exported as IGES Level information. If an AliasStudio Set is given a name of the form LEVEL<n>, where <n> is an IGES level number and greater than 0, then the corresponding VDAIS entity for each member of the AliasStudio Set is assigned to level<n> in the VDAIS file.

For example, the VDAIS entities corresponding to each member of the set LEVEL42 are assigned to level 42 in the VDAIS file. AliasStudio Multi-sets information is exported as VDAIS (type 406, form 1) Property entity definition levels. If an AliasStudio object is a member of several multi-sets that conform to this naming convention, then the VDAIS file contains a Property Entity 406 form 1 (Definition Levels) listing the VDAIS levels to which the corresponding entity belongs. In this case, AliasStudio Layer information is ignored and not exported to VDAIS.

Include Comments

Determines whether or not comments entered in the Edit File Comments section (found in the VDAIS File Header Information window) are included in the exported file. The default is OFF. See File Header Information page 46 for details.

Rebuild Geometry

When set OFF (the default), the degree of the resulting surface and the weights on the CVs do not change.

When set ON, models are updated so that all curves and surfaces are compatible with CAD systems or neutral file formats that cannot fully support NURBS geometry by:

Reducing high degree curves and surfaces to degree 3.

Making non rational curves and surfaces where rational ones existed before.

The resulting curve or surface is forced to be at most degree 3, with the weight of all CVs equal to a value of 1.0.

Scale Factor

Lets you save the wire model at a scale other than it was constructed. 1.0 is the default value.

Significant Digits

Lets you specify the number of significant digits for coordinate data in the exported file. The minimum number is 1 and the maximum number is 15.

Filename Extension

There is no Output Units option for VDAIS because coordinate data exported to VDAIS files are always in millimeters, regardless of the linear units set in AliasStudio. This is a requirement of the VDAIS standard.

> File header information

If you choose the VDAIS file format, the Save Options window expands to display the following:

Edit File Header

Edit File Comments

> Common file format descriptions- By Vendor window

To choose the specific software product to which you are transferring your model, first choose the file format (either IGES or VDAIS), then click and hold on the arrow beside "format" By Vendor. The By Vendor window is displayed.

When you choose a specific vendor, your output file is customized to optimize data exchange for the target system. The data exchange parameters (output environment variables) are modified. The active vendor is highlighted.

You can create new vendor files or remove files (except the default) and the By Vendor window is updated accordingly.

The system does not recognize a vendor file without an appropriate header. Create a new vendor file by copying, renaming, and modifying an existing one.

An appropriate header has the text "Vendor Configuration File" followed by a number sign (#) and the vendor's name. It is important to note that the placement of the vendor's name must follow the space after the number sign (#) on the first line.

IGES export options

IGES (Initial Graphics Exchange Specification) is a data exchange format between CAD/CAM systems.

> Tips

Spline Type, Output Style, Surface Type, and Rebuild Geometry are automatically set to the appropriate values when you select a specific vendor from the vendor list.

To temporarily override any or all three settings for a vendor, select the vendor first and then set the options. See Common File Format Descriptions page 44 for more information on the By Vendor window.

Storing an IGES file containing many trimmed surfaces takes considerably longer if the Spline Type option is set to PARAMETRIC, instead of BSPLINE.

AliasStudio spline trim curves are rational B-splines. The IGES Parametric Spline Curve and Surface entities (types 112 and 114, respectively) do not support rational B-splines directly. To represent AliasStudio trim curves using these IGES entities, the trim curves are automatically rebuilt to remove the rational component.

This rebuild operation is the extra step that takes time. This operation is not necessary when the Spline Type is set to B-SPLINE, since the IGES Rational B-Spline Curve entity (type 126) fully supports AliasStudio trim curves.

Spline Type

Determines the types of curves and surfaces to be created in the IGES file: either B-spline or parametric.

Output Style

Lets you preserve surfaces or convert them to curves for some drafting packages. If you choose CONVERT TO CURVES to convert surfaces to curves and have set the patch precision to a number greater than the default, all isoparametric curves are stored in the file. The default is PRESERVE SURFACES.

Surface Type

Determines whether trimmed surfaces are written as trimmed or bounded. The default is TRIMMED SURFACES.

Level Mapping

Determines whether AliasStudio layer or set information is exported as IGES Level information and can be recognized by each IGES entity.

Include Comments

Determines whether or not comments entered in the Edit File Comments section (found in the IGES File Header Information window) are included in the exported file. The default is OFF.

Rebuild Geometry

Modifies your models so that all curves and surfaces are compatible with CAD systems or neutral file formats that cannot fully support NURBS geometry by:

reducing high degree curves and surfaces to degree 3

making non rational curves and surfaces where rational ones existed before

When set OFF (the default), the degree of the resulting curve on surface does not change, nor do the weights on the CVs.

When set ON, the resulting curve or surface is forced to be at most degree three, with the weight of all CVs equal to a value of 1.

Scale Factor

Lets you save the wire model at a scale other than it was constructed. 1.0 is the default value.

Significant Digits

The number of significant digits for coordinate data in the exported file can be specified in this field. The minimum number is 1 and the maximum number is 15.

Output Units

Lets you choose any of the data unit types supported by the IGES standard, including miles, feet, inches, mils, microinches, kilometers, meters, centimeters, millimeters, and microns. The exported coordinate data is converted from the current linear units set in AliasStudio to the units selected here.

An additional choice is available called MODEL, which keeps the output units in the exported file the same as the linear units in AliasStudio (IGES option only).

Filename Extension

IGES Version

Use the items in this menu to set the IGES version number in the exported IGES file to 5.0 for systems that require it. The default is IGES version 5.3.

> IGES File header information

If you choose the IGES file format, the Save Options window expands to display the following:

Edit File Header

Edit File Comments

> Common file format descriptions - By Vendor window

WARNING

If you create in AliasStudio a surface of revolution with negative angle sweep (the starting angle or/and angle negative) this surface of revolution will be exported to IGES format as a Rational B-Spline Surface (IGES entity type 128) or a Parametric Spline Surface (IGES entity type 144) based on the value of the IGES Spline Type Option and not an IGES Surface of Revolution (IGES entity type 120).

You can also change the values of the environment variables for a specific vendor by bringing up the $ALIAS_LOCATION/IGES.config directory and editing the desired ASCII file.

Vendor Configuration File	         # AutoCAD Release 12
# 0-1   polyline or b-spline trim curve output.
setenv IGES_OUT_BS_TRIM           0  
# 0-1   polyline or parametric trim curve output.
setenv IGES_OUT_PAR_TRIM          0  
# 1-15  the number of digits of precision.
setenv IGES_OUT_PRECISION        10  
# 0-999 surface patch limit.
setenv IGES_OUT_MAX_SPANS         0  
# 0-999 trimmed surface patch limit.
setenv IGES_OUT_MAX_TRIM          0  
# 0-2  For Trimmed Parametric Surface (144/142) output:
#      0 = output both model space and 2D parametric trim curves.
#      1 = output 2D parametric trim curves only.
#      2 = output model space trim curves only.
setenv IGES_OUT_2D_TRIM           0  
# 0-1  For Bounded Surface (143/141) output:
#      0 = output model space curves only.
#      1 = output both model space and 2D parametric trim curves.
setenv IGES_OUT_2D_BOUNDARY       1  
# 0-1  convert splines to polygonal geometry.
setenv IGES_OUT_POLY              1  
# 0-1  output all surfaces as trimmed surfaces.
setenv IGES_OUT_SURF_AS_TRIM      0  
# 0-1  output Alias instances as duplicated and transformed 
geometry.
setenv IGES_OUT_INSTANCE_COPIES   1
# 0-1  Spline entity type:
#      0 = Rational B-Spline Curve/Surface (126/128).
#      1 = Parametric Spline Curve/Surface (112/114).
setenv IGES_OUT_SPLINE_TYPE 	  1
# 0-1  Output multi-span linear spline curve (polyline) as:
#      0 = Copious Data (106).
#      1 = Rational B-Spline curve (126) or Parametric Spline curve 
(112).
setenv IGES_OUT_POLYLINE_TYPE     0  
# 0-1  Surface output style: 0 (PRESERVE SURFACES) or 1 (CONVERT TO 
CURVES).
setenv IGES_OUT_OUTPUT_STYLE      0
# 0-1  Trimmed surface entity type:
#      0 = output Trimmed Parametric Surface (144).
#      1 = output Bounded Surface 			 (143).
setenv IGES_OUT_SURFACE_TYPE      0
# 0-1  Rebuild Geometry option: 0 (OFF) or 1 (ON).
setenv IGES_OUT_REBUILD_GEOMETRY  0
# 0-1  Output montone 2D trim curves: 0 (OFF) or 1 (ON).
setenv IGES_OUT_MONOTONE_2D_TRIM  0
# 0-1  Degree raise all 2D trim curves to cubic (1) or not (0).
setenv IGES_OUT_CUBIC_2D_TRIM     0
# 0-1  Output linear 2D trim curves that lie on surface boundaries 
as:
#      0 = Line Entity (110).
#      1 = Rational B-Spline curve (126) or Parametric Spline curve 
(112).
setenv IGES_OUT_LINEAR_2D_TRIM    0
# 0-3 Preferred Curve on Surface representation (PREF flag of IGES 
entity 142):
#     (0 = Unspecified; 1 = S o B (2D); 2 = C (3D); 3 = 2D and 3D 
are equally
#     preferred).
setenv IGES_OUT_CONS_PREF 		  1
# 0-1 Output Analytic IGES entities if possible. These entities 
include 
#     Circular Arc Entity 100, Conic Arc Entity 104,Unbounded Plane 
Entity 108,
#     Line Entity 110, Surface of Revolution Entity 120, 
Transformation Matrix 
#     Entity 124.
#     (0 = OFF; 1 = ON)
setenv IGES_OUT_ANALYTICS 		  1
# 0-3 Output degenerate model space trim curves.
#     (0 = None; 1 = Poles only; 2 = Seams only; 3 Poles and 
Seams).
setenv IGES_OUT_DEGEN_TRIM 		  2
# 6 or 8 IGES Version to output.
#     (6 = IGES V4.0; 11 = IGES V5.3)  No other values are 
supported.
setenv IGES_OUT_VERSION 		  8
# Output Units.
#     1 = INCHES            6 = METERS          11 = MICROINCHES
#     2 = MILLIMETERS       7 = KILOMETERS
#     3 = MODEL             8 = MILS
#     4 = FEET              9 = MICRONS
#     5 = MILES            10 = CENTIMETERS 
#
#     No other units supported. 
#     If set to 3 (i.e. MODEL) then the linear units set in the 
Alias Modeler 
#     will be used.
#
setenv IGES_OUT_UNITS 		  1
# File extension used for output file.
# First character of specified extension must be '.'.
setenv IGES_OUT_FILE_EXT 	   .igs

You can create new vendor files or remove files (except the default) and the By Vendor window is updated accordingly.

The system does not recognize a vendor file without an appropriate header. Create a new vendor file by copying, renaming, and modifying an existing one.

> IGES/VDAIS output environment variables option definitions

IGES_OUT_BS_TRIM - Linear Trim Curve Output

When the Spline Type option is set to B-SPLINE, this variable controls the type of IGES entity used for multi-span linear (that is, polyline) trim curves.

When set to 1, linear trim curves are output as IGES entity type 106 form 12 Copious Data. When set to 0, linear trim curves are output as IGES entity type 126 Rational B-spline Curves.

IGES_OUT_PAR_TRIM - Linear Trim Curve Output

When the Spline Type option is set to Parametric, this variable controls the type of IGES entity used for multi-span linear (that is, polyline) trim curves. When set to 1, linear trim curves are output as IGES entity type 106 form 12 Copious Data. When set to 0, linear trim curves are output as IGES entity type 114 Parametric Spline Curves.

IGES_OUT_PRECISION - Double Precision Significant Digits

Changes the number of digits of double precision stored in IGES or VDAIS files produced by AliasStudio. The default is 12 digits of precision, but can be changed to any number between 1 and 15.

IGES_OUT_2D_TRIM

Setting this variable to 1 specifies the output of 2D parametric trim curves only. The default of 0 outputs both 2D and 3D trim curves. Setting this value to 2 specifies the output of model space trim curves only.

IGES_OUT_2D_BOUNDARY

When set to 1, both 3D model space and 2D parametric space boundary curves are output if the Surface Type option has been set to BOUNDED SURFACE. When set to 0, only model space boundary curves are saved in the IGES or VDAIS file.

IGES_OUT_MAX_SPANS

This variable specifies the limit for the maximum number of patches for a single surface. The number of patches in U multiplied by the number of patches in V must be less than or equal to the defined value n for any surface. Surfaces that exceed this limit are stored, but reported in the logfile in the following format:

To keep surfaces within the patch limit, return to the modeler, pick the entity by name and detach it to produce an acceptable object. The default of 0 outputs no message.

IGES_OUT_MAX_TRIM

This variable specifies the limit for the maximum number of trimmed patches for a single surface. The number of patches in U multiplied by the number of patches in V must be less than or equal to the defined value n for any surface.

To solve this problem, return to the modeler, pick the entity by name and detach it to produce an acceptable object. The default 0 outputs no message.

IGES_OUT_POLY

This variable produces polygon data from arbitrary degree curves and surfaces for the IGES or VDAIS format.

All curves and surface isoparametric curves higher than degree 1 are converted to linear curves and output as IGES entities 106, copious data form 12.

When set to 1 and used in conjunction with the PRESERVE SURFACE option:

All curves higher than degree 1 are converted to linear curves and output as IGES entities 106, copious data form 12.

Surfaces higher than degree 1 are converted to linear b-spline surfaces and output to IGES entities 128, b-spline surface or 114 parametric surface. The linear mesh is defined by the surface isoparametric curves, and the density of the mesh is controlled using Object edit > Patch precision

IGES_OUT_SURF_AS_TRIM

Setting this variable to 1 causes all untrimmed surfaces to be output as trimmed surfaces. The default of 0 produces no change in surface output.

IGES_OUT_INSTANCE_COPIES

With the default of 1, Alias instances are output as transformed copies of the geometry that they instance. When set to 0, Alias instances are not stored.

IGES_OUT_SPLINE_TYPE

With the default of 0, Alias spline curves are output as IGES entity 126 and all spline surfaces are output as IGES entity 128. When set to 1, spline curves and surfaces are output as IGES Parametric entities, 112 and 114 respectively. The value of this variable is reflected in the IGES or VDAIS Spline Type option. Setting IGES_OUT_BS_TRIM=1 overrides this variable for trim curves, and setting IGES_OUT_POLY=1 overrides this variable for all curves.

IGES_OUT_POLYLINE_TYPE

With the default of 0, multi-span linear spline curves (polylines) are output as copious data IGES entities (106), and when set to 1, as IGES entity Rational B-spline curve (126), or parametric spline curve (112), according to the value of the IGES_OUT_SPLINE_TYPE or the IGES/VDAIS Output Style option.

IGES_OUT_OUTPUT_STYLE

When set to 1, surfaces are converted to curves. With the default of 0, surfaces are preserved in the IGES or VDAIS file. The value of this variable is reflected in the IGES or VDAIS Output Style option.

IGES_OUT_SURFACE_TYPE

With the default of 0, Alias trimmed surfaces are written as IGES entity 144 and curves on surface are written as IGES entity 142.

When set to 1, trimmed surfaces are written as IGES Bounded Surface entities (143), and curves on surface are written as IGES Boundary entities (141). The value of this variable is reflected in the IGES or VDAIS Surface Type option.

IGES_OUT_REBUILD_GEOMETRY

When set to 1, high degree or rational geometry is rebuilt to be of degree 3 and non-rational.

With the default of 0, no rebuild is done. The value of this variable is reflected in the IGES or VDAIS Rebuild Geometry option.

IGES_OUT_MONOTONE_2D_TRIM

This variable controls the output of 2D parametric space trim curves. When set to 1, 2D parametric space trim curves are output in monotone increasing/decreasing pieces. When set to 0, these trim curves are output whole.

IGES_OUT_CUBIC_2D_TRIM

When set to 1, all 2D parametric space trim curves are degree raised to cubic if necessary. When set to 0, these trim curves may be of degree 1, 2 or 3.

IGES_OUT_LINEAR_2D_TRIM

When set to 0, linear 2D parametric space trim curves that lie on a natural surface boundary are output as IGES entity type 110 Line. When set to 1, these curves are output as linear b-splines in the form of IGES entity type 126 Rational B-Spline Curve, or IGES entity type 112 parametric spline curve, according to the value of the IGES_OUT_SPLINE_TYPE or the IGES/VDAIS Spline Type option.

IGES_OUT_CONS_PREF

Controls the value of the "PREF" flag (preferred representation in sending system) of IGES entity type 142 Curve on a Parametric Surface. Some receiving systems require a specific value for this field. The set of values for this variable correspond to the valid range of values for the "PREF" flag.

The values are: 0 = Unspecified; 1 = 2D parameter space curve; 2 = Model Space Curve; 3 = Both 3D and 2D curves equally preferred.

IGES_OUT_ANALYTICS

Controls the output of IGES analytic type entities: 100 Circular Arc, 104 Conic Arc, 102 unbounded, 108 Plane, 110 Line, and 120 Surface of Revolution.

When set to 1, lines, arcs, and unbounded line-arcs constructed using some of the Curve functions, or lines, arcs, and unbounded curves previously retrieved via IGES, are output as IGES entity 110 Line, 100 Circular Arc, 124 transformation matrix, and 102 Composite Curve respectively. Conic arcs previously retrieved via IGES and represented in AliasStudio as B-splines are output as IGES entity 104 Conic Arc if unmodified in AliasStudio.

Planes and surfaces of revolution previously retrieved via IGES or created by using the Exact option in the Revolve Options box (Surfaces > Revolve

) and unmodified in AliasStudio, are output as IGES entity 108 unbounded Plane and entity 120 Surface of Revolution, respectively.

When set to 0, all lines, arcs, and unbounded line-arcs and surfaces are output based on the Spline Type option setting.

IGES_OUT_DEGEN_TRIM

When set to 0, degenerate 3D model space trim curves (that occur at the poles and seams of periodic geometry) are removed from trim boundaries before these boundaries are output to IGES or VDAIS.

When set to 1, degenerate 3D model space trim curves are not removed (0=none, 1=poles, 2=seams, 3=poles and seams).

IGES_OUT_VERSION

This variable controls the version of IGES used for the output file. When set to "6," the output file conforms to IGES V4.0. When set to 8, the output file conforms to IGES V5.0. When set to 11, the output file conforms to IGES v5.3. No other versions of IGES are supported on output (this parameter is not applicable for VDAIS). For VDAIS files, this variable always has a value of 6.

IGES_OUT_UNITS

This variable controls the units of measure used for the model in the output file.The valid ranges of values for units are:

No other units are supported. If set to 3, then the linear units set in the AliasStudio modeler are used. For VDAIS compatibility, this parameter is ignored since the units must be millimeters.

IGES_OUT_FILE_EXT

This variable specifies what the file extension of the output file will be. It can be set as anything valid for UNIX, but the value must begin with a '.'. For example, some systems require ".igs". If the value is invalid or not present, the default ".iges" is used.

WIRE export options

The default format for the Save option is WIRE, which is the normal AliasStudiobinary file format. The Wire Options section is displayed by default. The compressed proprietary file format used by Autodesk AliasStudio products. Programmers can access wire file via the AliasStudio OpenModel library. From within AliasStudio you may open an older wire version. By renaming older wire file you will keep the older file format version and begin working in the latest version of AliasStudio. Supported entities include surfaces, curves, and poly(gon) sets.

Embed File References

If toggled ON, all file textures used in a scene are embedded into the wire file. This improves your ability to move files around without losing textures required to render the scene.

Value	Unit	Value	Unit
1	Inches	7	Kilometers
2	Millimeters	8	Mils
3	Model	9	Microns
4	Feet	10	Centimeters
5	Miles	11	Microinches
6	Meters

You can use a stand-alone utility called EmbedTextures.exe if you want to convert a number of files all at once.

StudioViewer

If toggled ON, the wire file is optimized for viewing in the StudioViewer™ application.

As well, a large icon file (with extension .ICON) is created automatically for viewing in PortfolioWall™.