IGES options

Use the IGES page of the Options dialog to set how data is imported from IGES files.

Note: If you have selected a Target System on the File Export dialog, the export settings for the Target System are displayed automatically.

Click File > Options > Application Options > Data Exchange > IGES.
Use the following options to specify the IGES import settings:

Offset — Select the offset direction of the offset surface when importing IGES files. You can choose the direction to be along the surface normal or use the indicator in the IGES file.
The next five items on the dialog are tolerances used to import IGES files.

Note: When you import an IGES file, these tolerances are used regardless of those in the IGES file. For example, when importing from a solid modelling program with exceptionally high internal tolerances, the file is imported using the tolerances on this page rather than the high values saved with it.

If you change the tolerances, and they are either too small or too large, a warning is displayed indicating the minimum or maximum recommended value you can have.

3D curve point coincident — This is the maximum distance between two 3D points at which these points occupy the same position in 3D space. If more than this tolerance, the points are said to be distinct.
3D curve approximation — Certain types of curves cannot be imported into PowerShape, so they are changed to curves which can be read. This tolerance controls the maximum deviation of the approximated curve from the original curve.
2D parametric/trim curve approximation — All 2D trimming curves are converted to pcurves. This tolerance controls the maximum deviation of the created pcurve from the original trimming curve.
3D Surface approximation — Certain types of surfaces cannot be imported; therefore they are changed to surfaces which can be read. This tolerance controls how much the approximated surface differs to the original surface.
Create a solid last — Select this option to create a solid last from imported IGES data.