Unset propert useage in Rhino.Geometry

Scripting
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1

Hi there,

I came accross the documentation for the method Unset

for example

Rhino.geometry.Rectangle3d.Unset

https://developer.rhino3d.com/api/RhinoCommon/html/P_Rhino_Geometry_Plane_Unset.htm

and I don’t quite understand what it exactly does I tried a print test the output was a rhino geometry rectangle.I am curious to know where this can be used?

2

It can be used if you need an instance of the object in question, for instance a Rhino.Geometry.Plane that hasn’t been fully initialised, meaning that certain attributes haven’t been defined, which makes it unset. You can think of it as an empty or undefined object.

3

For example, Curve.CreateInterpolatedCurve() asks for start and end tangent direction vectors - you must provide these, but if you do not want to specify directions, you can use unset vectors:

start = Rhino.Geometry.Vector3d.Unset
end = Rhino.Geometry.Vector3d.Unset

nurb = Rhino.Geometry.NurbsCurve.CreateInterpolatedCurve(points, tol, 3, start, end)

-Pascal