Gets a polyline approximation of a curve.

Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll) Version: Rhino 6.0

C#

public PolylineCurve ToPolyline(
	int mainSegmentCount,
	int subSegmentCount,
	double maxAngleRadians,
	double maxChordLengthRatio,
	double maxAspectRatio,
	double tolerance,
	double minEdgeLength,
	double maxEdgeLength,
	bool keepStartPoint,
	Interval curveDomain
)

VB

Public Function ToPolyline ( 
	mainSegmentCount As Integer,
	subSegmentCount As Integer,
	maxAngleRadians As Double,
	maxChordLengthRatio As Double,
	maxAspectRatio As Double,
	tolerance As Double,
	minEdgeLength As Double,
	maxEdgeLength As Double,
	keepStartPoint As Boolean,
	curveDomain As Interval
) As PolylineCurve

mainSegmentCount

Type: System.Int32
If mainSegmentCount <= 0, then both subSegmentCount and mainSegmentCount are ignored. If mainSegmentCount > 0, then subSegmentCount must be >= 1. In this case the nurb will be broken into mainSegmentCount equally spaced chords. If needed, each of these chords can be split into as many subSegmentCount sub-parts if the subdivision is necessary for the mesh to meet the other meshing constraints. In particular, if subSegmentCount = 0, then the curve is broken into mainSegmentCount pieces and no further testing is performed.

subSegmentCount

Type: System.Int32
An amount of subsegments.

maxAngleRadians

Type: System.Double
( 0 to pi ) Maximum angle (in radians) between unit tangents at adjacent vertices.

maxChordLengthRatio

Type: System.Double
Maximum permitted value of (distance chord midpoint to curve) / (length of chord).

maxAspectRatio

Type: System.Double
If maxAspectRatio < 1.0, the parameter is ignored. If 1 <= maxAspectRatio < sqrt(2), it is treated as if maxAspectRatio = sqrt(2). This parameter controls the maximum permitted value of (length of longest chord) / (length of shortest chord).

tolerance

Type: System.Double
If tolerance = 0, the parameter is ignored. This parameter controls the maximum permitted value of the distance from the curve to the polyline.

minEdgeLength

Type: System.Double
The minimum permitted edge length.

maxEdgeLength

Type: System.Double
If maxEdgeLength = 0, the parameter is ignored. This parameter controls the maximum permitted edge length.

keepStartPoint

Type: System.Boolean
If true the starting point of the curve is added to the polyline. If false the starting point of the curve is not added to the polyline.

curveDomain

Type: Rhino.Geometry.Interval
This subdomain of the NURBS curve is approximated.

Type: PolylineCurve
PolylineCurve on success, null on error.

Supported in: 6.0.16224.21491, 5D58w

Curve Class
ToPolyline Overload
Rhino.Geometry Namespace