GM_GetPixelElevationRow |
Retrieves the elevation values for an entire row of the provided layer. If any elevations don't have valid values they will be replaced byy aInvalidVal. This function is much faster than individually getting the elevation value for individual pixels using the GM_GetPixelElevation function, so use this to access large portions of a loaded layer.
SyntaxGM_DLL_EXPORTED GM_Error_t32 __stdcall GM_GetPixelElevationRow ( GM_LayerHandle_t32 aLayer, // IN: Layer to get elevation from sint32 aRow, // IN: Y coord of pixel (0 is topmost) float* aElevRow, // OUT: Buffer to hold elevation values for row in meters float aInvalidVal // IN: Value to use for invalid samples (i.e. -9999.9) );