// Create the CoverageDefinition
IAgCoverageDefinition cd = root.CurrentScenario.Children.New(AgESTKObjectType.eCoverageDefinition, "cd1") as IAgCoverageDefinition;

// Get the IAgCvGrid interface
IAgCvGrid cvGrid = coverageDefinition.Grid;

// Define custom region
cvGrid.BoundsType = AgECvBounds.eBoundsCustomRegions;
IAgCvBoundsCustomRegions oBoundsCustom = cvGrid.Bounds as IAgCvBoundsCustomRegions;
oBoundsCustom.RegionFiles.Add(regionFilePath);
oBoundsCustom.AreaTargets.Add("AreaTarget/AreaTarget1");
// Create an Array of LLA points
// Array should contain Lat, Lon, Alt values
Array points = new object[,]
{
    { 6.9346423789e+01, -5.0260748372e+01, 0.0000000000e+00 },
    { 3.9613371741e+01, -6.6285429903e+01, 0.0000000000e+00 },
    { 3.9880319688e+01, -7.3881767479e+01, 0.0000000000e+00 },
    { 4.0700636942e+01, -1.1224999998e+02, 0.0000000000e+00 }
};

// SetPointsLLA expects a two dimensional array of LLA points
coverageDefinition.PointDefinition.SetPointsLLA(ref points);

// Set AutoRecomputer for Accesses
coverageDefinition.Advanced.AutoRecompute = false;

// Compute
coverageDefinition.ComputeAccesses();

// Export to File
string tempFile = System.IO.Path.Combine(System.IO.Path.GetTempPath(), "MyAccess.txt");
coverageDefinition.ExportAccessesAsText(tempFile);
coverageDefinition.ReloadAccesses();

// Clear accesses if necessary
//coverageDefinition.ClearAccesses();

IAgCvPointDefinition pointDefinition = coverageDefinition.PointDefinition;

// Set facility as object seed instance
pointDefinition.GridClass = AgECvGridClass.eGridClassFacility;
pointDefinition.UseGridSeed = true;
pointDefinition.SeedInstance = "Facility/North";

// Configure Altitude
pointDefinition.AltitudeMethod = AgECvAltitudeMethod.eAltitude;
pointDefinition.Altitude = 0.0;
coverageDefinition.PointDefinition.GroundAltitudeMethod = AgECvGroundAltitudeMethod.eCvGroundAltitudeMethodUsePointAlt;

// Get the Sampling interface
IAgCvAdvanced advanced = coverageDefinition.Advanced;
IAgAccessSampling sampling = advanced.Sampling;

// Set the Sampling Method
sampling.SetType(AgESamplingMethod.eSamplingMethodFixedStep);
IAgSamplingMethodFixedStep fixedStep = sampling.Strategy as IAgSamplingMethodFixedStep;

// Set properties on the Fixed Stop sampling method interface
fixedStep.FixedTimeStep = 360.0;
fixedStep.TimeBound = 5.0; 

// Get the Sampling interface
IAgCvAdvanced advanced = coverageDefinition.Advanced;
IAgAccessSampling sampling = advanced.Sampling;

// Set the Sampling Method
sampling.SetType(AgESamplingMethod.eSamplingMethodAdaptive);
IAgSamplingMethodAdaptive adaptive = sampling.Strategy as IAgSamplingMethodAdaptive;

// Set properties on the Adaptive sampling method interface
adaptive.MaxTimeStep = 180.0;
adaptive.MinTimeStep = 1.0;

string currentDateFormat = stkRoot.UnitPreferences.GetCurrentUnitAbbrv("DateFormat");

// For this example, we will set the coverage analysis time to the times the asset is available.
// Note, this doesn't handle subassets. To do that, you'll just have to iterate through the subasset list.
IAgDate minStartTime = null;
IAgDate maxStartTime = null;

foreach (IAgCvAssetListElement cvAsset in coverage.AssetList)
{
    IAgStkObject subAsset = stkRoot.GetObjectFromPath(cvAsset.ObjectName);
    if (subAsset.Vgt.EventIntervals.Contains("AvailabilityTimeSpan"))
    {
        IAgCrdnEventIntervalResult availableTimeSpan = subAsset.Vgt.EventIntervals["AvailabilityTimeSpan"].FindInterval();
        IAgDate startDate = stkRoot.ConversionUtility.NewDate(currentDateFormat, availableTimeSpan.Interval.Start.ToString());
        if (!(minStartTime != null) || startDate.OLEDate < minStartTime.OLEDate)
        {
            minStartTime = startDate;
        }

        IAgDate stopTime = stkRoot.ConversionUtility.NewDate(currentDateFormat, availableTimeSpan.Interval.Stop.ToString());
        if (!(maxStartTime != null) || stopTime.OLEDate > maxStartTime.OLEDate)
        {
            maxStartTime = stopTime;
        }
    }
}

if (minStartTime != null && maxStartTime != null)
{
    // Now, that we have the minimum start time and the maximum stop time of the asset list, we can explicitly set the coverage analysis time.
    coverage.Interval.AnalysisInterval.SetExplicitInterval(minStartTime.Format(currentDateFormat), maxStartTime.Format(currentDateFormat));
}

Console.WriteLine(
    "Coverage Analysis Interval, StartTime = {0}, StopTime = {1}",
    coverage.Interval.AnalysisInterval.FindStartTime(),
    coverage.Interval.AnalysisInterval.FindStopTime());