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ArcCurve Class
Represent arcs and circles.

ArcCurve.IsCircle returns true if the curve is a complete circle.

Inheritance Hierarchy

Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll) Version: 5.1.50000.0 (5.0.20693.0)
Syntax
[SerializableAttribute]
public class ArcCurve : Curve

The ArcCurve type exposes the following members.

Constructors
  NameDescription
Public methodArcCurve
Initializes a new ArcCurve instance.

Radius is set to 1, position to Origin and Domain to full span (circle).

Public methodArcCurve(Arc)
Initializes a new ArcCurve instance, copying values from another Arc.
Public methodArcCurve(ArcCurve)
Initializes a new ArcCurve instance, copying values from another ArcCurve.
Public methodArcCurve(Circle)
Initializes a new ArcCurve instance, copying the shape of a Circle.

Parameterization will be [0;circle.Circumference]

Protected methodArcCurve(SerializationInfo, StreamingContext)
Protected constructor used in serialization.
Public methodArcCurve(Arc, Double, Double)
Initializes a new ArcCurve instance, copying values from another Arc and specifying the needed parametrization of the arc.

Arc will not be cut again at these parameterizations.

Public methodArcCurve(Circle, Double, Double)
Initializes a new ArcCurve instance, copying values from a Circle and specifying the needed parametrization of the arc.

Circle will not be newly cut at these parameterizations.

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Properties
  NameDescription
Public propertyAngleDegrees
Gets the angles of this arc in degrees.
Public propertyAngleRadians
Gets the angles of this arc in radians.
Public propertyArc
Gets the arc that is contained within this ArcCurve.
Public propertyDegree
Gets the maximum algebraic degree of any span or a good estimate if curve spans are not algebraic.
(Inherited from Curve.)
Public propertyDimension
Gets the dimension of the object.

The dimension is typically three. For parameter space trimming curves the dimension is two. In rare cases the dimension can be one or greater than three.

(Inherited from Curve.)
Public propertyDomain
Gets or sets the domain of the curve.
(Inherited from Curve.)
Public propertyHasBrepForm
Returns true if the Brep.TryConvertBrep function will be successful for this object
(Inherited from GeometryBase.)
Public propertyHasUserData
Gets true if this class has any custom information attached to it through UserData.
(Inherited from CommonObject.)
Public propertyIsClosed
Gets a value indicating whether or not this curve is a closed curve.
(Inherited from Curve.)
Public propertyIsCompleteCircle
Gets a value indicating whether or not this curve can be represented by a complete circle.
Public propertyIsDeformable
true if object can be accurately modified with "squishy" transformations like projections, shears, and non-uniform scaling.
(Inherited from GeometryBase.)
Public propertyIsDocumentControlled
If true this object may not be modified. Any properties or functions that attempt to modify this object when it is set to "IsReadOnly" will throw a NotSupportedException.
(Inherited from GeometryBase.)
Public propertyIsPeriodic
Gets a value indicating whether or not this curve is considered to be Periodic.
(Inherited from Curve.)
Public propertyIsValid
Tests an object to see if it is valid.
(Inherited from CommonObject.)
Public propertyObjectType
Useful for switch statements that need to differentiate between basic object types like points, curves, surfaces, and so on.
(Inherited from GeometryBase.)
Public propertyPointAtEnd
Evaluates point at the end of the curve.
(Inherited from Curve.)
Public propertyPointAtStart
Evaluates point at the start of the curve.
(Inherited from Curve.)
Public propertyRadius
Gets the radius of this ArcCurve.
Public propertySpanCount
Gets the number of non-empty smooth (c-infinity) spans in the curve.
(Inherited from Curve.)
Public propertyTangentAtEnd
Evaluate unit tangent vector at the end of the curve.
(Inherited from Curve.)
Public propertyTangentAtStart
Evaluates the unit tangent vector at the start of the curve.
(Inherited from Curve.)
Public propertyUserData
List of custom information that is attached to this class.
(Inherited from CommonObject.)
Public propertyUserDictionary
Dictionary of custom information attached to this class. The dictionary is actually user data provided as an easy to use sharable set of information.
(Inherited from CommonObject.)
Public propertyUserStringCount
Gets the amount of user strings.
(Inherited from GeometryBase.)
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Methods
  NameDescription
Public methodChangeClosedCurveSeam
If this curve is closed, then modify it so that the start/end point is at curve parameter t.
(Inherited from Curve.)
Public methodChangeDimension
Changes the dimension of a curve.
(Inherited from Curve.)
Public methodClosedCurveOrientation(Plane)
Determines the orientation (counterclockwise or clockwise) of a closed planar curve in a given plane. Only works with simple (no self intersections) closed planar curves.
(Inherited from Curve.)
Public methodClosedCurveOrientation(Transform)
Determines the orientation (counterclockwise or clockwise) of a closed planar curve. Only works with simple (no self intersections) closed planar curves.
(Inherited from Curve.)
Public methodClosedCurveOrientation(Vector3d)
Determines the orientation (counterclockwise or clockwise) of a closed planar curve in a given plane. Only works with simple (no self intersections) closed planar curves.
(Inherited from Curve.)
Public methodClosestPoint(Point3d, Double)
Finds parameter of the point on a curve that is closest to testPoint. If the maximumDistance parameter is > 0, then only points whose distance to the given point is <= maximumDistance will be returned. Using a positive value of maximumDistance can substantially speed up the search.
(Inherited from Curve.)
Public methodClosestPoint(Point3d, Double, Double)
Finds the parameter of the point on a curve that is closest to testPoint. If the maximumDistance parameter is > 0, then only points whose distance to the given point is <= maximumDistance will be returned. Using a positive value of maximumDistance can substantially speed up the search.
(Inherited from Curve.)
Public methodClosestPoints(Curve, Point3d, Point3d)
Gets closest points between this and another curves.
(Inherited from Curve.)
Public methodClosestPoints(IEnumerableGeometryBase, Point3d, Point3d, Int32)
Finds the object (and the closest point in that object) that is closest to this curve.

Breps, surfaces, curves and point clouds are examples of objects that can be passed to this function.

(Inherited from Curve.)
Public methodClosestPoints(IEnumerableGeometryBase, Point3d, Point3d, Int32, Double)
Finds the object (and the closest point in that object) that is closest to this curve.

Breps, surfaces, curves and point clouds are examples of objects that can be passed to this function.

(Inherited from Curve.)
Public methodComponentIndex
If this piece of geometry is a component in something larger, like a BrepEdge in a Brep, then this function returns the component index.
(Inherited from GeometryBase.)
Protected methodConstructConstObject
Assigns a parent object and a subobject index to this.
(Inherited from CommonObject.)
Public methodContains(Point3d)
Computes the relationship between a point and a closed curve region. This curve must be closed or the return value will be Unset. Both curve and point are projected to the World XY plane.
(Inherited from Curve.)
Public methodContains(Point3d, Plane)
Computes the relationship between a point and a closed curve region. This curve must be closed or the return value will be Unset.
(Inherited from Curve.)
Public methodContains(Point3d, Plane, Double)
Computes the relationship between a point and a closed curve region. This curve must be closed or the return value will be Unset.
(Inherited from Curve.)
Public methodCode exampleCurvatureAt
Evaluate the curvature vector at a curve parameter.
(Inherited from Curve.)
Public methodDerivativeAt(Double, Int32)
Evaluate the derivatives at the specified curve parameter.
(Inherited from Curve.)
Public methodDerivativeAt(Double, Int32, CurveEvaluationSide)
Evaluate the derivatives at the specified curve parameter.
(Inherited from Curve.)
Public methodDispose
Actively reclaims unmanaged resources that this instance uses.
(Inherited from CommonObject.)
Protected methodDispose(Boolean)
For derived class implementers.

This method is called with argument true when class user calls Dispose(), while with argument false when the Garbage Collector invokes the finalizer, or Finalize() method.

You must reclaim all used unmanaged resources in both cases, and can use this chance to call Dispose on disposable fields if the argument is true.

Also, you must call the base virtual method within your overriding method.

(Inherited from Curve.)
Public methodDivideAsContour
Divides this curve at fixed steps along a defined contour line.
(Inherited from Curve.)
Public methodDivideByCount(Int32, Boolean)
Divide the curve into a number of equal-length segments.
(Inherited from Curve.)
Public methodDivideByCount(Int32, Boolean, Point3d)
Divide the curve into a number of equal-length segments.
(Inherited from Curve.)
Public methodCode exampleDivideByLength(Double, Boolean)
Divide the curve into specific length segments.
(Inherited from Curve.)
Public methodCode exampleDivideByLength(Double, Boolean, Point3d)
Divide the curve into specific length segments.
(Inherited from Curve.)
Public methodDivideEquidistant
Calculates 3d points on a curve where the linear distance between the points is equal.
(Inherited from Curve.)
Public methodDuplicate
Constructs an exact duplicate of this Curve.
(Inherited from Curve.)
Public methodCode exampleDuplicateCurve
Constructs an exact duplicate of this curve.
(Inherited from Curve.)
Public methodDuplicateSegments
Polylines will be exploded into line segments. ExplodeCurves will return the curves in topological order.
(Inherited from Curve.)
Public methodDuplicateShallow
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.
(Inherited from GeometryBase.)
Public methodEnsurePrivateCopy
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.
(Inherited from CommonObject.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Public methodExtend(Interval)
Where possible, analytically extends curve to include the given domain. This will not work on closed curves. The original curve will be identical to the restriction of the resulting curve to the original curve domain.
(Inherited from Curve.)
Public methodExtend(Double, Double)
Where possible, analytically extends curve to include the given domain. This will not work on closed curves. The original curve will be identical to the restriction of the resulting curve to the original curve domain.
(Inherited from Curve.)
Public methodExtend(CurveEnd, CurveExtensionStyle, Point3d)
Extends a curve to a point.
(Inherited from Curve.)
Public methodCode exampleExtend(CurveEnd, CurveExtensionStyle, IEnumerableGeometryBase)
Extends a curve until it intersects a collection of objects.
(Inherited from Curve.)
Public methodExtend(CurveEnd, Double, CurveExtensionStyle)
Extends a curve by a specific length.
(Inherited from Curve.)
Public methodExtendByArc
Extends a curve by an Arc until it intersects a collection of objects.
(Inherited from Curve.)
Public methodExtendByLine
Extends a curve by a line until it intersects a collection of objects.
(Inherited from Curve.)
Public methodExtendOnSurface(CurveEnd, BrepFace)
Extends a curve on a surface.
(Inherited from Curve.)
Public methodExtendOnSurface(CurveEnd, Surface)
Extends a curve on a surface.
(Inherited from Curve.)
Public methodFair
Fairs a curve object. Fair works best on degree 3 (cubic) curves. Attempts to remove large curvature variations while limiting the geometry changes to be no more than the specified tolerance.
(Inherited from Curve.)
Protected methodFinalize
Passively reclaims unmanaged resources when the class user did not explicitly call Dispose().
(Inherited from CommonObject.)
Public methodFit
Fits a new curve through an existing curve.
(Inherited from Curve.)
Public methodFrameAt
Returns a 3d frame at a parameter.
(Inherited from Curve.)
Public methodCode exampleGetBoundingBox(Boolean)
Boundingbox solver. Gets the world axis aligned boundingbox for the geometry.
(Inherited from GeometryBase.)
Public methodCode exampleGetBoundingBox(Plane)
Aligned Boundingbox solver. Gets the plane aligned boundingbox.
(Inherited from GeometryBase.)
Public methodGetBoundingBox(Transform)
Aligned Boundingbox solver. Gets the world axis aligned boundingbox for the transformed geometry.
(Inherited from GeometryBase.)
Public methodGetBoundingBox(Plane, Box)
Aligned Boundingbox solver. Gets the plane aligned boundingbox.
(Inherited from GeometryBase.)
Public methodGetCurveParameterFromNurbsFormParameter
Convert a NURBS curve parameter to a curve parameter.
(Inherited from Curve.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodCode exampleGetLength
Gets the length of the curve with a fractional tolerance of 1.0e-8.
(Inherited from Curve.)
Public methodGetLength(Double)
Get the length of the curve.
(Inherited from Curve.)
Public methodGetLength(Interval)
Get the length of a sub-section of the curve with a fractional tolerance of 1e-8.
(Inherited from Curve.)
Public methodGetLength(Double, Interval)
Get the length of a sub-section of the curve.
(Inherited from Curve.)
Public methodGetNextDiscontinuity
Searches for a derivative, tangent, or curvature discontinuity.
(Inherited from Curve.)
Public methodGetNurbsFormParameterFromCurveParameter
Convert a curve parameter to a NURBS curve parameter.
(Inherited from Curve.)
Public methodGetObjectData
Populates a System.Runtime.Serialization.SerializationInfo with the data needed to serialize the target object.
(Inherited from CommonObject.)
Public methodGetPerpendicularFrames
Gets a collection of perpendicular frames along the curve. Perpendicular frames are also known as 'Zero-twisting frames' and they minimize rotation from one frame to the next.
(Inherited from Curve.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGetUserString
Gets user string from this geometry.
(Inherited from GeometryBase.)
Public methodGetUserStrings
Gets a copy of all (user key string, user value string) pairs attached to this geometry.
(Inherited from GeometryBase.)
Public methodHasNurbsForm
Does a NURBS curve representation of this curve exist?
(Inherited from Curve.)
Public methodIsArc
Test a curve to see if it can be represented by an arc or circle within RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodIsArc(Double)
Test a curve to see if it can be represented by an arc or circle within the given tolerance.
(Inherited from Curve.)
Public methodIsCircle
Test a curve to see if it can be represented by a circle within RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodIsCircle(Double)
Test a curve to see if it can be represented by a circle within the given tolerance.
(Inherited from Curve.)
Public methodIsClosable(Double)
Decide if it makes sense to close off this curve by moving the endpoint to the start based on start-end gap size and length of curve as approximated by chord defined by 6 points.
(Inherited from Curve.)
Public methodIsClosable(Double, Double, Double)
Decide if it makes sense to close off this curve by moving the endpoint to the start based on start-end gap size and length of curve as approximated by chord defined by 6 points.
(Inherited from Curve.)
Public methodIsContinuous
Test continuity at a curve parameter value.
(Inherited from Curve.)
Public methodIsEllipse
Test a curve to see if it can be represented by an ellipse within RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodIsEllipse(Double)
Test a curve to see if it can be represented by an ellipse within a given tolerance.
(Inherited from Curve.)
Public methodIsInPlane(Plane)
Test a curve to see if it lies in a specific plane.
(Inherited from Curve.)
Public methodIsInPlane(Plane, Double)
Test a curve to see if it lies in a specific plane.
(Inherited from Curve.)
Public methodCode exampleIsLinear
Test a curve to see if it is linear to within RhinoMath.ZeroTolerance units (1e-12).
(Inherited from Curve.)
Public methodIsLinear(Double)
Test a curve to see if it is linear to within the custom tolerance.
(Inherited from Curve.)
Public methodCode exampleIsPlanar
Test a curve for planarity.
(Inherited from Curve.)
Public methodIsPlanar(Double)
Test a curve for planarity.
(Inherited from Curve.)
Public methodCode exampleIsPolyline
Several types of Curve can have the form of a polyline including a degree 1 NurbsCurve, a PolylineCurve, and a PolyCurve all of whose segments are some form of polyline. IsPolyline tests a curve to see if it can be represented as a polyline.
(Inherited from Curve.)
Public methodCode exampleIsShort(Double)
Used to quickly find short curves.
(Inherited from Curve.)
Public methodIsShort(Double, Interval)
Used to quickly find short curves.
(Inherited from Curve.)
Public methodIsValidWithLog
Determines if an object is valid. Also provides a report on errors if this object happens not to be valid.
(Inherited from CommonObject.)
Public methodLengthParameter(Double, Double)
Gets the parameter along the curve which coincides with a given length along the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodLengthParameter(Double, Double, Interval)
Gets the parameter along the curve which coincides with a given length along the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodLengthParameter(Double, Double, Double)
Gets the parameter along the curve which coincides with a given length along the curve.
(Inherited from Curve.)
Public methodLengthParameter(Double, Double, Double, Interval)
Gets the parameter along the curve which coincides with a given length along the curve.
(Inherited from Curve.)
Public methodMakeClosed
If IsClosed, just return true. Otherwise, decide if curve can be closed as follows: Linear curves polylinear curves with 2 segments, Nurbs with 3 or less control points cannot be made closed. Also, if tolerance > 0 and the gap between start and end is larger than tolerance, curve cannot be made closed. Adjust the curve's endpoint to match its start point.
(Inherited from Curve.)
Public methodMakeDeformable
If possible, converts the object into a form that can be accurately modified with "squishy" transformations like projections, shears, an non-uniform scaling.
(Inherited from GeometryBase.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodMemoryEstimate
Computes an estimate of the number of bytes that this object is using in memory.
(Inherited from GeometryBase.)
Protected methodNonConstOperation
For derived classes implementers.

Defines the necessary implementation to free the instance from being const.

(Inherited from Curve.)
Public methodNormalizedLengthParameter(Double, Double)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodNormalizedLengthParameter(Double, Double, Interval)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodNormalizedLengthParameter(Double, Double, Double)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve.
(Inherited from Curve.)
Public methodNormalizedLengthParameter(Double, Double, Double, Interval)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve.
(Inherited from Curve.)
Public methodNormalizedLengthParameters(Double, Double)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodNormalizedLengthParameters(Double, Double, Interval)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve. A fractional tolerance of 1e-8 is used in this version of the function.
(Inherited from Curve.)
Public methodNormalizedLengthParameters(Double, Double, Double)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve.
(Inherited from Curve.)
Public methodNormalizedLengthParameters(Double, Double, Double, Interval)
Input the parameter of the point on the curve that is a prescribed arc length from the start of the curve.
(Inherited from Curve.)
Public methodOffset(Plane, Double, Double, CurveOffsetCornerStyle)
Offsets this curve. If you have a nice offset, then there will be one entry in the array. If the original curve had kinks or the offset curve had self intersections, you will get multiple segments in the offset_curves[] array.
(Inherited from Curve.)
Public methodOffset(Point3d, Vector3d, Double, Double, CurveOffsetCornerStyle)
Offsets this curve. If you have a nice offset, then there will be one entry in the array. If the original curve had kinks or the offset curve had self intersections, you will get multiple segments in the offset_curves[] array.
(Inherited from Curve.)
Public methodOffsetNormalToSurface
Finds a curve by offsetting an existing curve normal to a surface. The caller is responsible for ensuring that the curve lies on the input surface.
(Inherited from Curve.)
Public methodOffsetOnSurface(BrepFace, Point2d, Double)
Offset a curve on a brep face surface. This curve must lie on the surface.

This overload allows to specify a surface point at which the offset will pass.

(Inherited from Curve.)
Public methodOffsetOnSurface(BrepFace, Double, Double)
Offset this curve on a brep face surface. This curve must lie on the surface.
(Inherited from Curve.)
Public methodOffsetOnSurface(Surface, Point2d, Double)
Offset a curve on a surface. This curve must lie on the surface.

This overload allows to specify a surface point at which the offset will pass.

(Inherited from Curve.)
Public methodOffsetOnSurface(Surface, Double, Double)
Offset a curve on a surface. This curve must lie on the surface.
(Inherited from Curve.)
Public methodOffsetOnSurface(BrepFace, Double, Double, Double)
Offset a curve on a brep face surface. This curve must lie on the surface.

This overload allows to specify different offsets for different curve parameters.

(Inherited from Curve.)
Public methodOffsetOnSurface(Surface, Double, Double, Double)
Offset this curve on a surface. This curve must lie on the surface.

This overload allows to specify different offsets for different curve parameters.

(Inherited from Curve.)
Protected methodOnSwitchToNonConst
Is called when a non-const operation occurs.
(Inherited from GeometryBase.)
Public methodPerpendicularFrameAt
Return a 3d frame at a parameter. This is slightly different than FrameAt in that the frame is computed in a way so there is minimal rotation from one frame to the next.
(Inherited from Curve.)
Public methodCode examplePointAt
Evaluates point at a curve parameter.
(Inherited from Curve.)
Public methodCode examplePointAtLength
Gets a point at a certain length along the curve. The length must be non-negative and less than or equal to the length of the curve. Lengths will not be wrapped when the curve is closed or periodic.
(Inherited from Curve.)
Public methodPointAtNormalizedLength
Gets a point at a certain normalized length along the curve. The length must be between or including 0.0 and 1.0, where 0.0 equals the start of the curve and 1.0 equals the end of the curve.
(Inherited from Curve.)
Public methodPullToBrepFace(BrepFace, Double)
Pulls this curve to a brep face and returns the result of that operation.
(Inherited from Curve.)
Public methodPullToMesh
Makes a polyline approximation of the curve and gets the closest point on the mesh for each point on the curve. Then it "connects the points" so that you have a polyline on the mesh.
(Inherited from Curve.)
Public methodRebuild
Rebuild a curve with a specific point count.
(Inherited from Curve.)
Public methodRemoveShortSegments
Looks for segments that are shorter than tolerance that can be removed. Does not change the domain, but it will change the relative parameterization.
(Inherited from Curve.)
Public methodCode exampleReverse
Reverses the direction of the curve.
(Inherited from Curve.)
Public methodRotate
Rotates the object about the specified axis. A positive rotation angle results in a counter-clockwise rotation about the axis (right hand rule).
(Inherited from GeometryBase.)
Public methodScale
Scales the object by the specified factor. The scale is centered at the origin.
(Inherited from GeometryBase.)
Public methodSetEndPoint
Forces the curve to end at a specified point. Not all curve types support this operation.
(Inherited from Curve.)
Public methodSetStartPoint
Forces the curve to start at a specified point. Not all curve types support this operation.
(Inherited from Curve.)
Public methodSetUserString
Attach a user string (key,value combination) to this geometry.
(Inherited from GeometryBase.)
Public methodSimplify
Returns a geometrically equivalent PolyCurve.

The PolyCurve has the following properties

1. All the PolyCurve segments are LineCurve, PolylineCurve, ArcCurve, or NurbsCurve.

2. The Nurbs Curves segments do not have fully multiple interior knots.

3. Rational Nurbs curves do not have constant weights.

4. Any segment for which IsLinear() or IsArc() is true is a Line, Polyline segment, or an Arc.

5. Adjacent Colinear or Cocircular segments are combined.

6. Segments that meet with G1-continuity have there ends tuned up so that they meet with G1-continuity to within machine precision.

(Inherited from Curve.)
Public methodSimplifyEnd
Same as SimplifyCurve, but simplifies only the last two segments at "side" end.
(Inherited from Curve.)
Public methodSpanDomain
Get the domain of the curve span with the given index. Use the SpanCount property to test how many spans there are.
(Inherited from Curve.)
Public methodSplit(IEnumerableDouble)
Splits (divides) the curve at a series of specified parameters. The parameter must be in the interior of the curve's domain.
(Inherited from Curve.)
Public methodSplit(Double)
Splits (divides) the curve at the specified parameter. The parameter must be in the interior of the curve's domain.
(Inherited from Curve.)
Public methodSplit(Brep, Double)
Splits a curve into pieces using a polysurface.
(Inherited from Curve.)
Public methodSplit(Surface, Double)
Splits a curve into pieces using a surface.
(Inherited from Curve.)
Public methodTangentAt
Evaluates the unit tangent vector at a curve parameter.
(Inherited from Curve.)
Public methodToNurbsCurve
Constructs a NURBS curve representation of this curve.
(Inherited from Curve.)
Public methodToNurbsCurve(Interval)
Constructs a NURBS curve representation of this curve.
(Inherited from Curve.)
Public methodToPolyline(Int32, Int32, Double, Double, Double, Double, Double, Double, Boolean)
Gets a polyline approximation of a curve.
(Inherited from Curve.)
Public methodToPolyline(Int32, Int32, Double, Double, Double, Double, Double, Double, Boolean, Interval)
Gets a polyline approximation of a curve.
(Inherited from Curve.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodTransform
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.
(Inherited from GeometryBase.)
Public methodTranslate(Vector3d)
Translates the object along the specified vector.
(Inherited from GeometryBase.)
Public methodTranslate(Double, Double, Double)
Translates the object along the specified vector.
(Inherited from GeometryBase.)
Public methodTrim(Interval)
Removes portions of the curve outside the specified interval.
(Inherited from Curve.)
Public methodTrim(Double, Double)
Removes portions of the curve outside the specified interval.
(Inherited from Curve.)
Public methodTrim(CurveEnd, Double)
Shortens a curve by a given length
(Inherited from Curve.)
Public methodTryGetArc(Arc)
Try to convert this curve into an Arc using RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodTryGetArc(Arc, Double)
Try to convert this curve into an Arc using a custom tolerance.
(Inherited from Curve.)
Public methodTryGetArc(Plane, Arc)
Try to convert this curve into an Arc using RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodTryGetArc(Plane, Arc, Double)
Try to convert this curve into an Arc using a custom tolerance.
(Inherited from Curve.)
Public methodCode exampleTryGetCircle(Circle)
Try to convert this curve into a circle using RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodCode exampleTryGetCircle(Circle, Double)
Try to convert this curve into a Circle using a custom tolerance.
(Inherited from Curve.)
Public methodTryGetEllipse(Ellipse)
Try to convert this curve into an Ellipse within RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodTryGetEllipse(Ellipse, Double)
Try to convert this curve into an Ellipse using a custom tolerance.
(Inherited from Curve.)
Public methodTryGetEllipse(Plane, Ellipse)
Try to convert this curve into an Ellipse within RhinoMath.ZeroTolerance.
(Inherited from Curve.)
Public methodTryGetEllipse(Plane, Ellipse, Double)
Try to convert this curve into an Ellipse using a custom tolerance.
(Inherited from Curve.)
Public methodCode exampleTryGetPlane(Plane)
Test a curve for planarity and return the plane.
(Inherited from Curve.)
Public methodTryGetPlane(Plane, Double)
Test a curve for planarity and return the plane.
(Inherited from Curve.)
Public methodTryGetPolyline(Polyline)
Several types of Curve can have the form of a polyline including a degree 1 NurbsCurve, a PolylineCurve, and a PolyCurve all of whose segments are some form of polyline. IsPolyline tests a curve to see if it can be represented as a polyline.
(Inherited from Curve.)
Public methodTryGetPolyline(Polyline, Double)
Several types of Curve can have the form of a polyline including a degree 1 NurbsCurve, a PolylineCurve, and a PolyCurve all of whose segments are some form of polyline. IsPolyline tests a curve to see if it can be represented as a polyline.
(Inherited from Curve.)
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Remarks

Details:

an ArcCurve is a subcurve of a circle, with a constant speed parameterization. The parameterization is an affine linear reparameterzation of the underlying arc m_arc onto the domain m_t.

A valid ArcCurve has Radius()>0 and 0<AngleRadians()<=2*PI and a strictly increasing Domain.

See Also