Line: definition (structure)

Definition

A line is defined by:

  • a number
  • a type
  • specific characteristics belonging to a type
  • its nature

Number

The number to identify the line is automatically allocated by Flux during the line creation.

Types of lines

The different types of lines and the characteristics useful for their description are gathered in the tables below:

Segment defined by Description
starting and ending points Starting and ending points defining segment
Arc defined by Description
its angle, starting and ending points Coordinates system which orients the arc around the Z axis Angle of the arc around Z axis Starting point and ending point
center coordinates, starting and ending points Coordinates system which orients the arc around the Z axis Coordinates of the center Starting point and ending point
its radius, starting and ending points Coordinates system which orients the arc around the Z axis Arc radius Starting point and ending point
starting, ending and center points Coordinates system which orients the arc around the Z axis Center point Starting point and ending point
starting, middle and ending points Starting point, middle point and ending point
Line defined by Description
propagation from an other line Geometric transformation Origin line
Line defined by Description
extrusion from a point Geometric transformation Origin point

Extrusion type:

  • straight forced
  • standard

Nature of lines

A specific feature, called nature, is attached to the lines. This attribute allows to set the following functions:

Nature The entity is taken into account for:
the geometry the mesh
standard (STANDARD) yes yes
in air (IN_AIR) no yes
ignored (NO_EXIST) no no