Last updated
Last updated
The Sweep1 command fits a surface through a series of profile curves that define the surface cross-sections and one curve that defines a surface edge.
Select a single rail curve.
Select cross-section curves in the order that the surface will pass through them. When multiple closed cross-section curves are selected, there will be an extra step for adjusting curve seams.
ChainEdges (rails only): Select connected edge/curve segments based on the continuity between segments. How to chain selection.
Point (cross‑sections only): Creates a surface that begins or ends at a point.
Reverses the curve direction.
Attempts to align the seam points and directions without intervention.
Moves the seam points to the way they were at the beginning of the command.
Yes : The seam points are always at the knots. You can only move them among the knots.
No : The seam points may leave the knots. You can move them without restriction.
A frame is a 3-D point and three direction vectors. It can be drawn as something that looks like the Rhino world axes icon. It describes a unique coordinate system in space. Frames are calculated along the rail and are used to orient the cross-section curves at those locations. In a simple case with one cross-section, frames are made at the cross-section curve location and where the calculated cross-section is going to go. The 3-D rotation between those two frames determines the rotation of the cross-section curve at its new location.
Freeform is the default Frame style. The selected Frame style will be remembered in the current Rhino for next use.
Freeform
The cross-section curve rotates to maintain its angle to the rail throughout the sweep.
Roadlike
Specify an axis for calculating the 3-D rotation of the cross-section.
The default Roadlike axis will be different depending on the rail curve. For a planar rail curve, the default axis is perpendicular to the curve plane. For a non-planar rail curve, world-Z axis will be used.
Set axis - Sets the axis direction for the Roadlike style.
Align with surface (surface edge as rail only)
If the rail is a surface edge, the cross-section curve will twist with the surface edge. If the shapes are tangent to the surface, the new surface should also be tangent.
Closed sweep
Creates a closed surface, continuing the surface past the last curve around to the first curve.
This option is only available after you select two cross-section curves.
Global shape blending
The sweep is linearly blended from one end to the other, creating sweeps that taper from one cross-section curve to the other. Otherwise, the sweep stays constant at the ends and changes more rapidly in the middle.
Untrimmed miters
If the sweep creates a polysurface with kinks, the component surfaces will be untrimmed.
Refit rail - Refits the rail curve before creating the sweep.
Align cross sections - Allows reversing the direction of the cross-section curves.
Do not change cross sections - Creates the sweep without altering the cross-section curves.
Rebuild cross sections with ___ control points - before creating the sweep.
Refit cross sections within ___ - Refits the cross-section curves before creating the sweep.
For more information, please refer to the Rhino documentation.
