/// <summary>
/// Unions a valid polygonal coverage or linear network.
/// </summary>
/// <param name="coverage">A coverage of polygons or lines</param>
/// <returns>The union of the coverage</returns>
/// <exception cref="TopologyException">Thrown in some cases if the coverage is invalid</exception>
public static Geometry Union(Geometry coverage)
{
var noder = new SegmentExtractingNoder();
// a precision model is not needed since no noding is done
return(OverlayNG.Union(coverage, null, noder));
}
private Geometry PrepareNonPoint(Geometry geomInput)
{
// if non-point not in output no need to node it
if (_resultDim == 0)
{
return(geomInput);
}
// Node and round the non-point geometry for output
var geomPrep = OverlayNG.Union(_geomNonPointInput, _pm);
return(geomPrep);
}
