JT Writer

The JT writer allows developers to export the Assembly, B-rep, View data from Exchange to JT. The file extensions that you can create when you export the data are:

.JT

HOOPS Exchange supports export to JT version 8.1, 9.5 or 10.

Assembly

The assembly structure including coloring and transformations will be exported to the JT file. Instances are currently replaced by object copy. The export is currently to a single monolithic file.

B-Rep

When we export the B-rep it will always be in Parasolid B-rep. If the format was not a Parasolid-based format then all surfaces get mapped to one of the following:

B-spline surface
Cone
Cylinder
Plane
Sphere
Revolution surface
Swept surface
Torus

…and curves to one of the following:

3D curve
Circle
Ellipse
Line
UV curve

If the source data was originally XT then HOOPS Exchange will take that data and use it for the B-rep definition.

Visualization

The tessellation is exported in a lossless, compressed format.

Views

We do not currently support Views in the export of this format

PMI

All supported PMI is exported to one of the following types.

Datum feature symbol
Dimension
GD&T
Generic PMI
MeasurementLocator
MeasurementPoint
Note
Surface finish (roughness)
Weld

Export Options Specific to JT

Export options specific to JT can be found on the A3DRWParamsExportJTData reference page. The option m_bWriteWireframe from A3DRWParamsExportJTData allows to export wireframe tessellation (this option is set to false by default).

Limitations

The current limitations include:

No support for parametric wireframe representations (Wireframe tessellation from specific entities are supported though)
PMI text is exported in tessellated form
No support of texture, light, or shader data
Instances are currently exported as a part copy