NurbsSurface Methods

Input the parameters of the point on the surface that is closest to testPoint.

Gets the side that is closest, in terms of 3D-distance, to a U and V parameter.

If this piece of geometry is a component in something larger, like a BrepEdge in a Brep, then this function returns the component index.

Assigns a parent object and a sub-object index to this.

Convert a NURBS surface bispan into a Bezier surface.

Copies this NURBS surface from another NURBS surface.

Constructs a new NURBS surface with internal uninitialized arrays.

Fit a sequence of 2d points on a surface to make a curve on the surface.

Computes a discrete spline curve on the surface. In other words, computes a sequence of points on the surface, each with a corresponding parameter value.

Constructs a new NURBS surfaces from cone data.

Makes a surface from 3 corner points.

Makes a surface from 4 corner points.

This is the same as calling CreateFromCorners(Point3d, Point3d, Point3d, Point3d, Double) with tolerance 0.

Makes a surface from 4 corner points.

Constructs a new NURBS surfaces from cylinder data.

Creates a NURBS surface from a plane and additional parameters.

Constructs a NURBS surface from a 2D grid of control points.

Constructs a new NURBS surfaces from sphere data.

Constructs a new NURBS surfaces from torus data.

Builds a surface from an auto-sorted network of curves/edges.

Builds a surface from an ordered network of curves/edges.

Constructs a railed Surface-of-Revolution.

Constructs a ruled surface between two curves. Curves must share the same knot-vector.

Create a bi-cubic SubD friendly surface from a surface.

Constructs a NURBS surface from a 2D grid of points.

Computes the curvature at the given UV coordinate.

Returns a CRC calculated from the information that defines the object. This CRC can be used as a quick way to see if two objects are not identical.

Returns the maximum algebraic degree of any span (or a good estimate if curve spans are not algebraic).

Actively reclaims unmanaged resources that this instance uses.

Overridden in order to destroy local display cache information

Gets the domain in a direction.

Constructs a deep (full) copy of this object.

Constructs a light copy of this object. By "light", it is meant that the same underlying data is used until something is done to attempt to change it. For example, you could have a shallow copy of a very heavy mesh object and the same underlying data will be used when doing things like inspecting the number of faces on the mesh. If you modify the location of one of the mesh vertices, the shallow copy will create a full duplicate of the underlying mesh data and the shallow copy will become a deep copy.

If you want to keep a copy of this class around by holding onto it in a variable after a command completes, call EnsurePrivateCopy to make sure that this class is not tied to the document. You can call this function as many times as you want.

Check that all values in other are within epsilon of the values in this

Determines whether the specified object is equal to the current object.

Evaluates a surface mathematically.

Analytically extends the surface to include the interval.

Extends an untrimmed surface along one edge.

Passively reclaims unmanaged resources when the class user did not explicitly call Dispose().

Find the closest isoparamentric curve, given a test point.

Fits a new surface through an existing surface.

(Inherited from Surface.)

Computes the orient plane on a surface given a U and V parameter.

This is the simple evaluation call with no error handling.

Bounding box solver. Gets the world axis aligned bounding box for the geometry.

Aligned Bounding box solver. Gets the plane aligned bounding box.

Aligned Bounding box solver. Gets the world axis aligned bounding box for the transformed geometry.

Aligned Bounding box solver. Gets the plane aligned bounding box.

Serves as the default hash function.

Searches for a derivative, tangent, or curvature discontinuity.

Searches for a derivative, tangent, or curvature discontinuity.

Translates a parameter from the current surface to the parameter space of the surface returned by ToNurbsSurface.

Populates a System.Runtime.Serialization.SerializationInfo with the data needed to serialize the target object.

Gets array of span "knots".

Translates a parameter from a value on the surface returned by ToNurbsSurface to the current surface.

Gets an estimate of the size of the rectangle that would be created if the 3d surface where flattened into a rectangle.

Gets the Type of the current instance.

Gets user string from this geometry.

Gets a copy of all (user key string, user value string) pairs attached to this geometry.

Is there a NURBS surface representation of this surface.

Increase the degree of this surface in U direction.

Increase the degree of this surface in V direction.

Constructs an interpolated curve on a surface, using 3D points.

Returns a curve that interpolates points on a surface. The interpolant lies on the surface.

Returns a curve that interpolates points on a surface. The interpolant lies on the surface.

Tests if a surface parameter value is at a seam.

Tests if a surface parameter value is at a singularity.

Gets a value indicating if the surface is closed in a direction.

Determines if the surface is a portion of a cone within RhinoMath.ZeroTolerance.

Determines if the surface is a portion of a cone within a given tolerance.

Tests continuity at a surface parameter value.

Determines if the surface is a portion of a cylinder within RhinoMath.ZeroTolerance.

Determines if the surface is a portion of a cylinder within a given tolerance.

Determines if a 2d bounding box is isoparametric in the parameter space of this surface.

Determines if a 2d curve is isoparametric in the parameter space of this surface.

Determines if a 2D curve is isoparametric in the parameter space of this surface.

Gets isoparametric curve.

Gets a value indicating if the surface is periodic in a direction (default is false).

Tests a surface to see if it is planar to zero tolerance.

Tests a surface to see if it is planar to a given tolerance.

true if surface side is collapsed to a point.

Determines if the surface is a portion of a sphere within RhinoMath.ZeroTolerance.

Determines if the surface is a portion of a sphere within a given tolerance.

Determines if the surface is a portion of a torus within RhinoMath.ZeroTolerance.

Determines if the surface is a portion of a torus within a given tolerance.

Determines if an object is valid. Also provides a report on errors if this object happens not to be valid.

Find parameters of the point on a surface that is locally closest to the testPoint. The search for a local close point starts at seed parameters.

For expert use only. Makes a pair of compatible NURBS surfaces based on two input surfaces.

If possible, converts the object into a form that can be accurately modified with "squishy" transformations like projections, shears, an non-uniform scaling.

Makes this surface non-rational.

Makes this surface rational.

Constructs a NURBS surface with start and end edge isocurve matching the start and end of targetCurve, and Greville points on targetCurve.

Creates a shallow copy of the current Object.

Computes an estimate of the number of bytes that this object is using in memory.

Destroy cache handle

Computes the surface normal at a point.

This is the simple evaluation call - it does not support error handling.

Constructs a new surface which is offset from the current surface.

Is called when a non-constant operation occurs.

Evaluates a point at a given parameter.

Pulls a 3d curve back to the surface's parameter space.

Pulls a 3d curve back to the surface's parameter space.

Computes a 3d curve that is the composite of a 2d curve and the surface map.

Computes a 3d curve that is the composite of a 2d curve and the surface map.

Rebuilds an existing surface to a given degree and point count.

Rebuilds an existing surface with a new surface to a given point count in either the u or v directions independently.

This routine accepts a 3-d trim curve (trimCrv3d). The trim curve is assumed to run from one surface edge to the opposite edge; this is referred to as a "simple" trim curve, roughly parallel to one of the srf directions (either u or v). We refer to that parameter as the "trim parameter". The routine splits the surface via the trim curve, and then refits either side ("upper" = "above the trim", and "lower" = "below the trim") as a set of untrimmed Nurbs surfaces. The idea is to retain, as much as possible, the Nurbs structure of srf, especially in the trim parameter.

Splits the surface into two and refits the split edge

Reverses parameterization Domain changes from [a,b] to [-b,-a]

Same as Reverse, but if inPlace is set to true this Surface is modified instead of a new copy being created.

Rotates the object about the specified axis. A positive rotation angle results in a counter-clockwise rotation about the axis (right hand rule).

Scales the object by the specified factor. The scale is centered at the origin.

Sets the domain in a direction.

Attach a user string (key,value combination) to this geometry.

Constructs a geodesic between 2 points, used by ShortPath command in Rhino.

Smooths a surface by averaging the positions of control points in a specified region.

Smooths a surface by averaging the positions of control points in a specified region.

Gets number of smooth nonempty spans in the parameter direction.

Splits (divides) the surface into two parts at the specified parameter

Converts the surface into a Brep.

Create a JSON string representation of this object

Gets a NURBS surface representation of this surface. Default tolerance of 0.0 is used.

Gets a NURBS surface representation of this surface.

Returns a string that represents the current object.

Transforms the geometry. If the input Transform has a SimilarityType of OrientationReversing, you may want to consider flipping the transformed geometry after calling this function when it makes sense. For example, you may want to call Flip() on a Brep after transforming it.

Translates the object along the specified vector.

Translates the object along the specified vector.

Transposes surface parameterization (swap U and V)

Transposes surface parameterization (swap U and V)

Constructs a sub-surface that covers the specified UV trimming domain.

Tests a surface to see if it is a portion of a cone within RhinoMath.ZeroTolerance and return the cone.

Tests a surface to see if it is a portion of a cone and returns the cone.

Tests a surface to see if it is a portion of a cylinder within RhinoMath.ZeroTolerance and return the cylinder.

Tests a surface to see if it is a portion of a cylinder and return the infinite cylinder.

Tests a surface with the assumption that it might be a right circular cylinder and returns this geometry.

Tests a surface for planarity and return the plane.

Tests a surface for planarity and return the plane.

Test a surface to see if it is a portion of a sphere and return the sphere.

Test a surface to see if it is a portion of a sphere and return the sphere.

Tests a surface to see if it is a portion of a torus within RhinoMath.ZeroTolerance and returns the torus.

Tests a surface to see if it is a portion of a torus and returns the torus.

Calculates the U, V, and N directions of a NURBS surface at a u,v parameter similar to the method used by Rhino's MoveUVN command.

Copies a surface so that all locations at the corners of the copied surface are specified distances from the original surface.

Copies a surface so that all locations at the corners, and from specified interior locations, of the copied surface are specified distances from the original surface.