UtilityEx.GetLinesTangentToCircleFromPoint (Circle, Point3D) Method
Parameters
- c
- Circle
The circle.
- pt
- Point3D
The point on the circle's plane and outside it.
Return Value
Line[]Returns a Line-type array of length 2 containing the tangent lines from the point to the circle. A Null array if the point is inside the circle or if the point does not lie on the circle's plane.
For arcs, it returns even the tangent line that do not touch the arc. For a different result use GetLinesTangentToCircleFromPoint.
The tangent lines are directed from the point toward the circle.