Contour fill options.
| Member | Value | Description | 
|---|---|---|
| eBlockFill | 0 | Block Fill: color is applied to a region that contains points of a certain contour level. | 
| eSmoothFill | 1 | Smooth Fill: color is applied smoothly over all points in the grid to differentiate contour levels. NOTE: Not a valid choice when BoundsType (IAgCvGrid) is set to LatLine, LonLine or CustomBoundary. | 





