About Exporting Curves and Surfaces

Curves and surfaces can be exported as standard or BSpline entities.

The corresponding options are found in the IGES section of the Preferences.

  • Standard: This is the default option.
    • The curves and surfaces are exported as is.
    • Regarding surface boundaries, if the surface support is of B-Spline type and C2 continuous, both representation of boundaries are defined (2D parametric and 3D model space). Otherwise, only the 3D representation is defined.
  • B-Spline:
    • Curves, circles and lines are exported to B-Spline curves (126).
    • Planes and surfaces are exported to rational B-Spline surfaces (128).
    • Regarding surface boundaries, 2D and 3D boundary representations are created. Those boundaries are ordered and oriented.