Drag model plugin interface. Inherits from IAgAsDragModelPlugin, follow the link to see inherited properties and methods. Used to set reflectance vector (and optionally its partial derivs) used in computation of the drag/lift/side force. A method returning false indicates an error.
PreNextStep | Triggered just before the next propagation step is attempted. Use the input interface to access settings. Returning false will turn this callback off. |