2011

Table Of Contents
Trim and Untrim Surfaces
Trim and untrim surfaces to meet the edges of other objects.
An important step in the surface modeling workflow is trimming surfaces.
You can trim a surface where it meets an intersecting object or you can project
geometry onto a surface as a trimming edge.
When a surface is trimmed, the removed surface areas can be replaced with
SURFUNTRIM.
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.
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