virtual INT32 MgCoordinateSystemGridBase::ApproxGridLineMemoryUsage

(

MgCoordinateSystemGridSpecification *

specification

)

[pure virtual]

Calculates the approximate amount of memory required to generated grid lines for this instance.

Parameters:

specification

(MgCoordinateSystemGridSpecification) The grid specification

Returns:

The approximate memory usage in bytes

Remarks:

This method may be used to determine if a specific grid generation should be attempted. The returned values are approximate and is in bytes. The proposed grid boundary for the grid object hosting this interface must set prior to calling this function. Failure to do so will cause a -1 return value.