Linear
 | 
| Name | Description | |
|---|---|---|
| IsOn(Double) | Checks whether a specified parameter value is within a valid parametric range of the curve. | |
| IsOn(Plane) | Checks whether this linear entity lies on the specified plane. | |
| IsOn(Point3d) | Checks whether a specified point lies on this curve. | |
| IsOn(Double, Tolerance) | Checks whether a specified parameter value is within a valid parametric range of the curve. | |
| IsOn(Plane, Tolerance) | Checks whether this linear entity lies on the specified plane according to a tolerance. | |
| IsOn(Point3d, Double) | Checks whether a specified point lies on this curve. | |
| IsOn(Point3d, Tolerance) | Checks whether a specified point lies on this curve within a specified tolerance. | |
| IsOn(Point3d, Double, Tolerance) | Checks whether a specified point lies on this curve. |