FlowAlongSrf

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Flow along Surface

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The FlowAlongSrf command morphs objects from a source surface to a target surface.

Steps

  1. Select objects.
  2. Select the edge of the base surface near a corner.
  3. Select the edge of the target surface near a matching corner.
Command-line options

Copy

Specifies whether or not the objects are copied. A plus sign appears at the cursor when copy mode is on. The RememberCopyOptions command determines whether the selected option is used as the default.

Rigid

Specifies that individual objects will not be deformed as they are transformed.

The illustration shows the Rigid option with the Bend command.

Yes

Individual objects will not change, only their positions will change.

No

Individual objects are transformed as well as their positions.


Original objects (left), Rigid=No (center), Rigid=Yes (right).

Plane

Draw a plane instead of using an existing surface as the base objects.

See the Rectangle command for detailed option descriptions.

ConstrainNormal

Yes

Maps the objects onto the target surface while maintaining the orientation relative to the construction plane normal of the viewport in which the target surface is selected.

No

Maps the objects onto the target surface using the target surface normal direction.

AutoAdjust
Yes
  • Ignores the UV directions of the base and target surfaces. The corner and edge near the picking location define the origin and U direction. The other direction will be the V direction. The N direction is defined from UV directions by the Right-hand rule.

UVN directions defined by the picking location on the surface.

The object may be mapped onto the opposite side of the target surface if the picking locations on the base and target surfaces don't match.

  • If the base or target surface is trimmed, the shrunk version of the surface is used for mapping the object.
No
  • Uses the UV directions of the base and target surfaces to map the object onto the target surface. The picking locations on the base and target surfaces are not critical. The N direction is defined from UV directions by the Right-hand rule.
  • If the base or target surface is trimmed, the underlying surface is used for mapping the object.

 

A trimmed surface (left), its underlying surface (middle) and the shrunk surface (right).

PreserveStructure

Specifies whether the control-point structure of a curve or surface will be maintained after the deformation.

The PreserveStructure option does not apply to polysurfaces, and will not be displayed if polysurfaces are selected for editing.

Yes

The control point structure of the surface is maintained. Deformation may be less accurate if there are too few control points in on the object.

No

The objects are refit as needed with more control points to allow accurate deformation.


PreserveStructure=Yes (left); PreserveStructure=No (right).

See also

Use Universal Deformation Technology

 

 

 

Rhinoceros 6 © 2010-2017 Robert McNeel & Associates. 24-Sep-2018