Extended Command Line Entity Specification

Keyword

Description

These keywords are used the same way as in basic entity specification. For example:

draw surface all

draw surface 1 to 5 step 2 curve 1 to 3 in body 4 to 8 by 2

draw hex in face in surface 2

draw face common_to volume 1 2

draw node in hex in face in surface 2 curve 1 2 5 to 50 except 2 3 4

Not flips the logical sense of an expression - it changes true to false and false to true. For example:

draw surface with not is_meshed

The "of" operator is used to get an attribute value for a single entity, such as "length of curve 5". Only attributes that return a single numeric value may be used in an "of" expression. There must be only one entity specified after the "of" operator, but it can be identified using any valid entity expression. An example of a complete command which includes the "of" operator is:

list curve with length < length of curve 5 ids

These logic operators determine how multiple criteria are combined.

draw surface with length > 3 or with is_meshed = false

These relational operators compare two expressions. You may use = or == for "equals". <> means "not equal". For example:

draw surface with x_max <= 3

draw volume with z_max <>12.3

These arithmetic operators work in the traditional manner.

draw surface with length * 3 + 1.2 > 10

Parentheses are used to group expressions and to override precedence. When in doubt about precedence, use parentheses.

draw surface with length > 3 and ( with is_meshed = false or x_min > 1 )

the ID of an entity

The length of a curve or edge

The area of a surface.

The volume of a volume.

Works for curves with an exterior angle greater than (>), less than (<), or equal to (=) a given angle in degrees. This is used if you want to do some operation, such as refinement, on all the reentrant curves or curves with surfaces that form a certain angle.

Whether a geometric entity has been meshed or not

Whether a geometric entity is defined using a NURBS representation. Otherwise the entity has an analytic representation.

Whether a geometric surface is planar.

Whether a geometric surface is periodic, such as a sphere or torus.

A geometric entity is a sheetbody if it is a collection of surfaces that do not form a solid.

The number of elements owned by this geometric entity. Only elements of the same dimension as the entity are counted (number of hexes in a volume, number of faces on a surface, etc.)

The topological dimension of an entity (3 for volumes, 2 for surfaces, etc.).

The x, y, or z coordinate of the point at the center of the entity's bounding box.

The x, y, or z coordinate of the minimum extent of the entity's bounding box

The x, y, or z coordinate of the maximum extent of the entity's bounding box

Whether a geometry entity has a merge flag on. All geometric entities have one set by default.

A flag that specifies whether an entity is virtual geometry. An entity is virtual if it has at least one virtual (partition/composite) topology bridge.

An entity "has_virtual" if it is virtual itself, or has at least one child virtual entity

An entity "is_real" if it has at least one real (non-virtual) topology bridge.

Used to specify geometry entities with a specified number of parent entities. May be used to find "free curves" where num_parents=0 or non-manifold curves where num_parents>2.

Used to specify elements which have been assigned to a block. This is also useful to find elements NOT assigned to a block by using "not block_assigned".

Used to specify geometry entities which have been assigned a specified scheme. The scheme name is specified with the keyword string used when setting the scheme. Wildcards can also be used when specifying the scheme name. For example, draw surface with has_scheme '*map' will draw surfaces with scheme map or submap.