2012

Table Of Contents
NOTE SURFUNTRIM does not restore areas removed by the SURFAUTOTRIM
system variable and PROJECTGEOMETRY. It only restores areas trimmed with
SURFTRIM.
The Properties palette indicates if the surface contains any trimmed edges.
Projecting Geometry onto Surfaces, Solids, and Regions
Similar to projecting a movie onto a screen, you can project geometry onto
3D solids, surfaces, and regions from different directions to create trimming
edges. The PROJECTGEOMETRY command creates a duplicate curve on the
object that you can move and edit. You can also trim against 2D curves that
do not actually touch the surface, but that appear to intersect the object in
the current view.
Use the SURFACEAUTOTRIM system variable to automatically trim a surface
when you project geometry onto it.
Options for Projecting Geometry
Project geometry from 3 different angles: the Z axis of the current UCS, the
current view, or a path between two points.
Project to UCS - Projects the geometry along the positive or negative Z axis
of the current UCS.
Project to View - Projects the geometry based on the current view.
Project to Two Points - Projects the geometry along a path between two
points.
To trim a surface
1 Click Surface tab Create panel Trim.
2 Select the surface and press Enter.
3 Select the cutting curves and press Enter.
4 Select the surface areas to remove and press Enter.
The selected areas are removed.
Trim and Untrim Surfaces | 1221