Creates a transient 3D arc by specifying 3 points. A transient arc is not displayed or saved in a document. Transient arcs are used as a wrapper to work with raw 3D arc information.
This is a static method. | 
        
This is a static method. | 
        
| Type | Description | 
| Arc3D | Returns the newly created arc or null if the creation failed. | 
| Name | Type | Description | 
| pointOne | Point3D | The start point of the arc. | 
| pointTwo | Point3D | A point along the arc. This point must not be coincident with the first or third points. This point must not lie on the line between the first and third points. | 
| pointThree | Point3D | The end point of the arc. This point must not be coincident with the first or second points. | 
| Name | Description | 
| SketchFixedSplines.addByNurbsCurve | Demonstrates the SketchFixedSplines.addByNurbsCurve method. |