public int IndexOfNearest(DSGeometry[] contextGeometries)
{
if (contextGeometries == null)
throw new System.ArgumentNullException("contextGeometries");
IGeometryEntity[] hostentities = contextGeometries.ConvertAll(DSGeometryExtension.ToEntity<DSGeometry, IGeometryEntity>);
if(hostentities == null)
throw new System.ArgumentException(string.Format(Properties.Resources.InvalidInput, "contextGeometries", "IndexOfNearest"), "contextGeometries");
return GetIndexOfNearestGeometry(hostentities, PointEntity);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public DSGeometry SelectNearest(DSGeometry[] contextGeometries)
{
if (contextGeometries == null)
throw new System.ArgumentNullException("contextGeometries");
IGeometryEntity[] hostentities = contextGeometries.ConvertAll(DSGeometryExtension.ToEntity<DSGeometry, IGeometryEntity>);
if(hostentities == null)
throw new System.ArgumentException(string.Format(Properties.Resources.InvalidInput, "contextGeometries", "SelectNearest"), "contextGeometries");
int nearestIndex = GetIndexOfNearestGeometry(hostentities, PointEntity);
IGeometryEntity nearestGeom = hostentities[nearestIndex];
return DSGeometry.ToGeometry(nearestGeom, false); //returning one of the existing geometry, so persist is no-op.
}
/// <summary>
/// Creates a block with the given name, reference coordinate system and from the
/// specified geometries
/// </summary>
/// <param name="blockName">the block name</param>
/// <param name="referenceCoordinateSystem">the reference coordinate system</param>
/// <param name="contents">the geometries contained in the block</param>
/// <returns></returns>
public static DSBlock FromGeometry(string blockName, DSCoordinateSystem referenceCoordinateSystem,
DSGeometry[] contents)
{
string kMethodName = "DSBlock.FromGeometry";
if (null == referenceCoordinateSystem)
throw new ArgumentNullException("contextCoordinateSystem");
if (string.IsNullOrEmpty(blockName))
throw new ArgumentException(string.Format(Properties.Resources.InvalidInput, blockName, kMethodName), "blockName");
IGeometryEntity[] hosts = contents.ConvertAll(DSGeometryExtension.ToEntity<DSGeometry, IGeometryEntity>);
if (null == hosts || hosts.Length == 0)
throw new ArgumentException(string.Format(Properties.Resources.InvalidInput, "geometries", kMethodName), "geometries");
IBlockHelper helper = HostFactory.Factory.GetBlockHelper();
if (null == helper)
throw new InvalidOperationException(string.Format(Properties.Resources.OperationFailed, kMethodName));
if (helper.DefineBlock(referenceCoordinateSystem.CSEntity, blockName, hosts))
{
return new DSBlock(blockName);
}
return null;
}