Helix

Status: Implemented

Helix creates a parametric helical curve you can reuse as a path for sweeps, tubes, or thread features. Geometry generation is delegated to the BREP kernel (buildHelixPolyline) so the same code can drive downstream operations and maintain consistent handedness/segmenting.

Inputs

• radius – Base radius of the helix.
• endRadius – Optional end radius for tapering.
• mode – Choose whether turns or pitch drives total length (height is always applied).
• pitch – Distance advanced per turn along the axis (editable in pitch mode; derived in turns mode).
• turns – Number of turns (used in turns mode; derived in pitch mode).
• height – Total height along the axis.
• startAngle – Starting angle in degrees.
• handedness – Choose right- or left-handed winding.
• resolution – Segments per turn for the preview polyline.
• placementMode – Use transform or align to an axis + startPoint.
• axis – Edge selection for the helix axis (when using axis placement).
• startPoint – Optional start point when using axis placement.
• transform – Position, rotation, and scale (when using transform placement).

Behaviour

• Computes helix points in the kernel for consistent reuse (threads, path-driven features).
• Builds an EDGE with world-space polylineLocal data, plus helper axis/endpoint edges.
• Axis placement derives origin/direction from the selected edge, optionally using a chosen start point.
• Stores the generated helix data in persistentData.helix for later edits or inspection.