3D Polygon Mesh Selection (PEDIT)

Selecting a polygon mesh provides specialized PEDIT options.

The following prompts are displayed.

Edit Vertex

Edits individual vertices of a polygon mesh that can be seen as a rectangular M by N array, where M and N are the dimensions specified in 3DMESH. The SURFTAB1 and SURFTAB2 system variables store M and N values for RULESURF, TABSURF, REVSURF, and EDGESURF.

Pressing Enter accepts the current default, which is either Next or Previous.

Next

Moves the X marker to the next vertex. The marker does not wrap around from the end to the start of the mesh, even if the mesh is closed.

Previous

Moves the X marker to the previous vertex. The marker does not wrap around from the start to the end of the mesh, even if the mesh is closed.

Left

Moves the X marker to the previous vertex in the N direction. The marker does not wrap around from the start to the end of the mesh, even if the mesh is closed.

Right

Moves the X marker to the next vertex in the N direction. The marker does not wrap around from the end to the start of the mesh, even if the mesh is closed.

Up

Moves the X marker to the next vertex in the M direction. The marker does not wrap around from the end to the start of the mesh, even if the mesh is closed.

Down

Moves the X marker to the previous vertex in the M direction. The marker does not wrap around from the start to the end of the mesh, even if the mesh is closed.

Move

Repositions the vertex and moves the editing mark.

Regen

Regenerates the polygon mesh.

Exit

Exits Edit Vertex mode.

Smooth Surface

Fits a smooth surface. The SURFTYPE system variable controls the type of surface this option fits. The types of surfaces include quadratic B-spline, cubic B-spline, and Bezier.

Desmooth

Restores the original control-point polygon mesh.

Mclose

Closes the M-direction polylines if the polygon mesh is open in the M direction.

Mclose and Nclose are replaced by Mopen and Nopen if the polygon mesh is currently closed in the M or N direction.

Mopen

Opens the M-direction polylines if the polygon mesh is closed in the M direction.

Nclose

Closes the N-direction polylines if the polygon mesh is open in the N direction.

Nopen

Opens the N-direction polylines if the polygon mesh is closed in the N direction.

Undo

Reverses operations as far back as the beginning of the PEDIT session.