Editing ACIS (section)

=== ACIS Modeler ===
ACIS core functionality<ref name="acis_functionality">{{cite web | url=http://www.spatial.com/products/acis.html| title=ACIS Functionality | access-date=2007-03-16 |archive-url = https://web.archive.org/web/20070309194852/http://www.spatial.com/products/acis.html  |archive-date = 2007-03-09}}</ref> can be subclassified into three categories, namely:

==== 3D Modelling ====
* Extrude/revolve/sweep sets of 2D curves into complex surfaces or solids.
* Fillet and chamfer between faces and along edges in surface and solid models.
* Fit surfaces to a closed network of curves.
* Generate patterns of repetitive shapes.
* Hollow solids and thicken surfaces.
* Interactively bend, twist, stretch, and warp combinations of curves, surfaces, and solids.
* Intersect/subtract/unite any combination of curves, surfaces, and solids.
* Loft surfaces to fit a set of profile curves.
* Taper/offset/move surfaces in a model.

==== 3D Model Management ====

* Attach user-defined data to any level of a model.
* Track geometry and topology changes.
* Calculate mass and volume.
* Model sub-regions of a solid using cellular topology.
* Unlimited undo/redo with independent history streams.

==== 3D Model Visualization ====
* Tessellate surface geometry into polygonal mesh representation.
* Create advanced surfacing capabilities with the optional Deformable Modeling component.
* Generate precise 2D projections with hidden line removal using optional PHL V5 component.
* Develop graphical applications