RhinoNurbsCurve

class compas_rhino.geometry.RhinoNurbsCurve

Bases: RhinoCurve, NurbsCurve

Class representing a NURBS curve based on the NurbsCurve of Rhino.Geometry.

Parameters:

namestr, optional

Name of the curve.

Attributes:

pointslist[compas.geometry.Point], read-only

The control points of the curve.

weightslist[float], read-only

The weights of the control points.

knotslist[float], read-only

The knot vector, without duplicates.

multiplicitieslist[int], read-only

The multiplicities of the knots in the knot vector.

knotsequencelist[float], read-only

The knot vector, with repeating values according to the multiplicities.

continuityint, read-only

The degree of continuity of the curve.

degreeint, read-only

The degree of the curve.

orderint, read-only

The order of the curve (degree + 1).

is_rationalbool, read-only

True is the curve is rational.

References

• https://developer.rhino3d.com/api/RhinoCommon/html/T_Rhino_Geometry_NurbsCurve.htm

• https://en.wikipedia.org/wiki/Non-uniform_rational_B-spline

• https://developer.rhino3d.com/guides/opennurbs/nurbs-geometry-overview/

Methods

from_interpolation	Construct a NURBS curve by interpolating a set of points.
from_native	Construct a NURBS curve from an existing Rhino curve.
from_parameters	Construct a NURBS curve from explicit curve parameters.
from_points	Construct a NURBS curve from control points.

Inherited Methods

ToString	Converts the instance to a string.
aabb	Compute the axis aligned bounding box of the curve.
closest_point	Compute the closest point on the curve to a given point.
compute_aabb	Compute the axis-aligned bounding box of the geometry.
compute_obb	Compute the oriented bounding box of the geometry.
copy	Make an independent copy of the current curve.
curvature_at	Compute the curvature at a point on the curve.
divide_by_count	Divide the curve into a specific number of equal length segments.
divide_by_length	Divide the curve into segments of specified length.
elevate_degree
fair
frame_at	Compute the local frame at a point on the curve.
from_arc	Construct a NURBS curve from an arc.
from_circle	Construct a NURBS curve from a circle.
from_ellipse	Construct a NURBS curve from an ellipse.
from_json	Construct an object of this type from a JSON file.
from_jsonstring	Construct an object of this type from a JSON string.
from_line	Construct a NURBS curve from a line.
from_obj	Load a curve from an OBJ file.
from_rhino	Construct a curve from an existing Rhino curve.
from_step	Load a NURBS curve from an STP file.
insert_knot
length	Compute the length of the curve.
normal_at	Compute the normal of the curve at a parameter.
offset	Compute the length of the curve.
point_at	Compute a point on the curve.
reduce_degree
refine_knot
remove_knot
reverse	Reverse the parametrisation of the curve.
reversed	Reverse a copy of the curve.
rotate	Rotate the geometry.
rotated	Returns a rotated copy of this geometry.
scale	Scale the geometry.
scaled	Returns a scaled copy of this geometry.
sha256	Compute a hash of the data for comparison during version control using the sha256 algorithm.
smooth
split
tangent_at	Compute the tangent vector at a point on the curve.
to_json	Convert an object to its native data representation and save it to a JSON file.
to_jsonstring	Convert an object to its native data representation and save it to a JSON string.
to_obj	Write the curve geometry to an OBJ file.
to_points	Convert the curve to a list of points.
to_polygon	Convert the curve to a polygon.
to_polyline	Convert the curve to a polyline.
to_step	Write the curve geometry to a STP file.
torsion_at	Compute the torsion of the curve at a parameter.
transform	Transform this curve.
transformed	Returns a transformed copy of this geometry.
translate	Translate the geometry.
translated	Returns a translated copy of this geometry.
trim
validate_data	Validate the data against the object's data schema.