...on the preferences panels
3D Options
This preferences panel is where tessellation is set. The settings made here specify during import how accurately the surface of the later 2D illustration will match that of the 3D data.
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Tessellation settings are only applied when importing files in IGES format.
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If drawings contain several parts with free-form contours, higher tessellation can enable a more accurate depiction of the contour. As the result is also influenced by the limit value settings for thin lines it is worthwhile experimenting to establish the optimal settings for your data.
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If only a few drawings in your project contain several parts with free-form contours, only change tessellation settings when importing these files. Very high tessellation can lead to the formation of unwanted inner lines on assemblies that do not contain free-form contours. The standard setting usually provides good results.
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More information on this subject can be found in the Arbortext IsoDraw User's Reference in the Preferences... and Working in 3D mode sections.
IGES Import
A detailed description of the settings options for IGES Import can be found in the Arbortext IsoDraw Data Exchange Reference. We would now like to provide a few tips that should make your work easier.
The
Select assemblies option should only be used when you only wish to import certain parts of a drawing. When this option has been selected, an additional dialog box appears for selecting the structure. For further information, see
...in the Import Dialog Boxes.
The box next to Create object information for assemblies should always be checked. In 3D mode, object information appears in the object window and is also carried over into the 2D projection. This also ensures that object information is available in the 2D illustration and, for example, that callouts can be automatically created according to the object list. If this object information box is not checked, only the name Group appears in the 3D-mode object window.
Clicking on the Options button calls up the dialog box with IGES options. Out of the wide range of elements, only surface elements and the solid element entity 186 are needed to convert 3D data for Technical Illustration. Selecting the Solids + Surfaces button converts precisely these elements.
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In principal, tips relating to the IGES Import preferences page also apply for VRML and Wavefront formats. However, in these formats, all the elements offered in the Options dialog box should be selected for conversion.
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If you want to consistently use the same settings throughout a project, you can deselect the Show dialog option. All the files are then automatically loaded using the same settings. No dialog boxes for changing settings will appear during import.
