Axis Definition#

Create an axis definition that combines modeling information consisting of rail curves, sections, placements and variability.

The component features a context menu, accessible by right-clicking.

The component has the option to keep the Axis visualization in Rhino visible even when it is not selected. This option can be accessed from SOFiSTiK settings under ‘Display’ and ‘Show Permament Axis Visualization.

Input#

Name	Type	Structure	Description
Curves	Curve	List	Geometry of axis
Sections	Section	Tree	Cross section to be extruded along the axis. When using multiple curves / sections: Sections in branch { j } are assigned to curve j. Section at index i will be positioned between placement i and i + 1.
Variables	Axis Variable	Tree	Axis variables describing the course of a variable along the axis
Placements	Axis Placement	Tree	Axis placements specifying orientations of the section at different stations along the axis
Axis ID	Text	List	4 char axis identifier
Direction Z	Vector	List	Sets the axis local Z direction
InteAttr	InteAttr	Item	Interpolation attributes

Output#

Name	Type	Structure	Description
Axis Definition	Axis Definition	List	Resulting axis definition

Context menu#

Name	Description
First curve as main curve	Ensures that the placement plane of the first curve is used for all subsequent curves. When enabled, this option makes the placement planes of all curves parallel, providing a consistent orientation. If disabled, each curve’s placement plane is determined by its local rotations, potentially leading to non-parallel planes.

Name

Description

First curve as main curve

Ensures that the placement plane of the first curve is used for all subsequent curves.

When enabled, this option makes the placement planes of all curves parallel, providing a consistent orientation.

If disabled, each curve’s placement plane is determined by its local rotations, potentially leading to non-parallel planes.