Cross Sections

Previous pageReturn to chapter overviewReturn to Top Next page












A cross section is a geometry object containing either a pre-defined 2D shape, or a custom 2D shape composed of other polygons and polylines. Cross sections are used to generate 3D surface meshes by extruding the 2D shape along a path defined by another polygon or polyline. This makes it possible to create a wide variety of engineered surfaces for modeling.




Polygons and polylines used in cross sections will only use the X and Y coordinates, since a cross section is a 2D object. The polygon or polyline used later for the extrusion path must use all coordinates since the final object will be a true 3D object.