Paths: about
Definition
A path is a line support, on which the user can evaluate a spatial quantity.
Use
A path is used to plot 2D spatial curves.
Geometric shapes
The path can be as follows:
- rectilinear (straight segment)
- curvilinear (arc of circle, helicoïdal line)
Mesh
The mesh of a path is based on a user-defined discretization: computation points are regularly spaced on the line of the support.


Types of path
Types of path are as follows:
| Type of path | Shape of path | Definition | 
|---|---|---|
| path defined by two points | straight segment / arc of circle helicoïdal line | two points * (graphical or numerical capture) | 
| arc defined by three points | arc of circle | three points * (graphical or numerical capture) | 
| arc defined by center, radius and angles | arc of circle | center coordinates, radius, starting angle and ending angle | 
| parametrized path | straight segment / arc of circle helicoïdal line | parameter functions | 
                
            
Parameter setting
The user can use geometric parameters to define the path by the numerical mode.