FeatureLine.ExtendWithFixedCurve(Boolean, Point3d, Point3d) Method

Extends the feature line with a curved arc segment defined by three points. This method adds a new fixed arc segment to either the beginning or end of the feature line, creating a smooth curve that passes through the specified second point and ends at the target point. The arc is calculated using the three-point arc definition method, providing precise control over the arc's curvature and direction. This is useful when you need to create arcs with specific geometric constraints.

Namespace: Autodesk.Civil.DatabaseServices
Assembly: AeccDbMgd (in AeccDbMgd.dll) Version: 13.8.0.1516

Syntax

C#

public void ExtendWithFixedCurve(
	bool extendFromStart,
	Point3d secondPoint,
	Point3d targetPoint
)

VB

Public Sub ExtendWithFixedCurve ( 
	extendFromStart As Boolean,
	secondPoint As Point3d,
	targetPoint As Point3d
)

C++

public:
void ExtendWithFixedCurve(
	bool extendFromStart, 
	Point3d secondPoint, 
	Point3d targetPoint
)

Parameters

extendFromStart  Boolean

True to extend from the start point, false to extend from the end point.

secondPoint  Point3d

The intermediate point that defines the arc's curvature and direction.

targetPoint  Point3d

The 3D target point where the arc segment should end.

Exceptions

Example

1// Extend feature line with a three-point arc
2Point3d secondPoint = new Point3d(110.0, 55.0, 0.0);
3Point3d targetPoint = new Point3d(120.0, 60.0, 0.0);
4featureLine.ExtendWithFixedCurve(false, secondPoint, targetPoint);

See Also

Reference