# Geometric Tube: definition (structure)

## Definition

A Geometric Tube is defined by:

- a name (and a comment)
- a type
- specific characteristics belonging to a type
- a section
- attributes of visibility

## Name

The name to identify the Geometric Tube is set by the user during the creation of this one.

A comment (optional) can be added to the name.

## Types of Geometric Tubes

The different types of Geometric Tubes and the characteristics useful for their description are presented in the table below.

Type | Characteristics |
---|---|

Defined by a path |
Type of path (open or closed) Ordered list of Tubes Points |

Propagation of another Geometric Tube |
Definition of the used transformation (type and values) Origin Geometric Tube |

## Section

The shape of the cross-section of Geometric Tubes can be:

- rectangular
- variously-shaped full
- variously-shaped hollow, but with a constant layer thickness

User parameter setting to define the cross-section of a Geometric Tube depends on its geometric shape, as detailed in § Geometric Tube: section.