geometry polygon create command

Syntax

geometry polygon create keyword ...

Primary keywords:

by-edges    by-nodes    by-positions    set

Create a polygon in the current geometry set. If the set keyword is given then the edge is created in that set. A list of edges, a list of nodes or a list of points in space can be input. If an edge list is used, the edges must be given in order and form a closed polygon. If a node list is used, edges are created if none are found, and the polygon is automatically closed. If a position list is used, nodes and edges are created if none are found, and the polygon is automatically closed. A warning results if the polygon is not planar or is not convex. If an extrude vector is provided, then the polygon will be extruded along that vector, resulting in a closed volume of polygonal surfaces.

by-edges i1 i2 ... [polycreateoptions]

List of edge IDs that belong to the polygon. The IDs must be ordered such that the edges form a closed polygon.

by-nodes i1 i2 ... [polycreateoptions]

List of node IDs that belong to the polygon. Edges are created if none are found, and the polygon is automatically closed.

by-positions v1 v2 ... [polycreateoptions]

List of nodal positions that belong to the polygon. Nodes and edges are created if none are found, and the polygon is automatically closed.

set s

Create the polygon in the set s.

Block of Common Options for Polygon Creation

The following keywords may be used to modify the commands: by-edges, by-nodes and by-positions.

extrude v

will create polygon and “extrude” in the direction supplied.

extra i a

Optionally assign the extra variable a to index i.

group s1 <slot s2 >

Optionally assign the group name s1 to slot s2 (optional).