Computes tangent lines on the circle.

Namespace:  ceometric.VectorGeometry
Assembly:  ceometric.VectorGeometry (in ceometric.VectorGeometry.dll) Version: 1.8.0.0 (1.8.0.0)

Syntax

C#
public List<Line> TangentLines2d(
	Point point
)
Visual Basic (Declaration)
Public Function TangentLines2d ( _
	point As Point _
) As List(Of Line)
Visual C++
public:
List<Line^>^ TangentLines2d(
	Point^ point
)

Parameters

point
Type: ceometric.VectorGeometry..::.Point
A point.

Return Value

Returns
  • 2 tangent lines from point on the circle if point is coplanar to the circle and point does not lie inside the circle.
  • 1 tangent line if point lies on the circumference of the circle.
  • 0 tangent lines if point lies inside the circle.
  • null if the circle is not coplanar to point

See Also