/// <summary>
/// Merge updates only the Null attributes of this object
/// with the attributes of another.
/// </summary>
public virtual void Merge(TopologyLocation gl)
{
// if the src is an Area label & and the dest is not, increase the dest to be an Area
if (gl.location.Length > location.Length)
{
Locations[] newLoc = new Locations[3];
newLoc[(int)Positions.On] = location[(int)Positions.On];
newLoc[(int)Positions.Left] = Locations.Null;
newLoc[(int)Positions.Right] = Locations.Null;
location = newLoc;
}
for (int i = 0; i < location.Length; i++)
if (location[i] == Locations.Null && i < gl.location.Length)
location[i] = gl.location[i];
}
/// <summary>
///
/// </summary>
/// <param name="gl"></param>
public TopologyLocation(TopologyLocation gl)
{
Init(gl.location.Length);
if (gl != null)
{
for (int i = 0; i < location.Length; i++)
location[i] = gl.location[i];
}
}
/// <summary>
///
/// </summary>
/// <param name="le"></param>
/// <param name="locIndex"></param>
/// <returns></returns>
public virtual bool IsEqualOnSide(TopologyLocation le, int locIndex)
{
return location[locIndex] == le.location[locIndex];
}
/// <summary>
///
/// </summary>
/// <param name="gl"></param>
public virtual void SetLocations(TopologyLocation gl)
{
for (int i = 0; i < gl.location.Length; i++)
location[i] = gl.location[i];
}
/// <summary>
/// Construct a Label with a single location for both Geometries.
/// Initialize the location for the Geometry index.
/// </summary>
/// <param name="geomIndex"></param>
/// <param name="onLoc"></param>
public Label(int geomIndex, Locations onLoc)
{
elt[0] = new TopologyLocation(Locations.Null);
elt[1] = new TopologyLocation(Locations.Null);
elt[geomIndex].SetLocation(onLoc);
}
/// <summary>
/// Construct a Label with On, Left and Right locations for both Geometries.
/// Initialize the locations for both Geometries to the given values.
/// </summary>
/// <param name="onLoc"></param>
/// <param name="leftLoc"></param>
/// <param name="rightLoc"></param>
public Label(Locations onLoc, Locations leftLoc, Locations rightLoc)
{
elt[0] = new TopologyLocation(onLoc, leftLoc, rightLoc);
elt[1] = new TopologyLocation(onLoc, leftLoc, rightLoc);
}
/// <summary>
/// Converts one GeometryLocation to a Line location.
/// </summary>
/// <param name="geomIndex"></param>
public virtual void ToLine(int geomIndex)
{
if (elt[geomIndex].IsArea)
elt[geomIndex] = new TopologyLocation(elt[geomIndex].GetLocations()[0]);
}
/// <summary>
/// Construct a Label with a single location for both Geometries.
/// Initialize the locations to Null.
/// </summary>
/// <param name="onLoc"></param>
public Label(Locations onLoc)
{
elt[0] = new TopologyLocation(onLoc);
elt[1] = new TopologyLocation(onLoc);
}
/// <summary>
///
/// </summary>
/// <param name="geomIndex"></param>
/// <param name="tl"></param>
private void SetGeometryLocation(int geomIndex, TopologyLocation tl)
{
if (tl == null)
return;
elt[geomIndex].SetLocations(tl);
}
/// <summary>
/// Merge this label with another one.
/// Merging updates any null attributes of this label with the attributes from lbl.
/// </summary>
/// <param name="lbl"></param>
public virtual void Merge(Label lbl)
{
for (int i = 0; i < 2; i++)
{
if (elt[i] == null && lbl.elt[i] != null)
elt[i] = new TopologyLocation(lbl.elt[i]);
else elt[i].Merge(lbl.elt[i]);
}
}
/// <summary>
/// Construct a Label with the same values as the argument Label.
/// </summary>
/// <param name="lbl"></param>
public Label(Label lbl)
{
elt[0] = new TopologyLocation(lbl.elt[0]);
elt[1] = new TopologyLocation(lbl.elt[1]);
}
/// <summary>
/// Construct a Label with the same values as the argument for the
/// given Geometry index.
/// </summary>
/// <param name="geomIndex"></param>
/// <param name="gl"></param>
public Label(int geomIndex, TopologyLocation gl)
{
elt[0] = new TopologyLocation(gl.GetLocations());
elt[1] = new TopologyLocation(gl.GetLocations());
elt[geomIndex].SetLocations(gl);
}
/// <summary>
/// Construct a Label with On, Left and Right locations for both Geometries.
/// Initialize the locations for the given Geometry index.
/// </summary>
/// <param name="geomIndex"></param>
/// <param name="onLoc"></param>
/// <param name="leftLoc"></param>
/// <param name="rightLoc"></param>
public Label(int geomIndex, Locations onLoc, Locations leftLoc, Locations rightLoc)
{
elt[0] = new TopologyLocation(Locations.Null, Locations.Null, Locations.Null);
elt[1] = new TopologyLocation(Locations.Null, Locations.Null, Locations.Null);
elt[geomIndex].SetLocations(onLoc, leftLoc, rightLoc);
}