/// <summary>
/// Executes this operation.
/// </summary>
/// <param name="sub">The polygon subdivision information.</param>
internal void Execute(PolygonSub sub)
{
int numLine = sub.NumLink;
if (numLine == 0)
{
throw new Exception("PolygonSubdivisionOperation.Execute - Nothing to add");
}
// If the polygon contains just one label, de-activate it. This covers a "well-behaved" situation,
// where the label inside the polygon is likely to be redundant after the subdivision (it also
// conforms to logic used in the past). In a situation where the polygon contains multiple labels,
// it's less clear whether the labels become redundant or not, so we keep them all.
Polygon pol = sub.Polygon;
if (pol.LabelCount == 1)
{
m_Label = pol.Label;
if (m_Label != null)
{
m_Label.IsInactive = true;
}
}
// Mark the polygon for deletion
pol.IsDeleted = true;
// Get the default entity type for lines.
CadastralMapModel map = MapModel;
IEntity ent = map.DefaultLineType;
// Allocate array to point to the lines we will be creating.
m_Lines = new LineFeature[numLine];
// Add lines for each link
PointFeature start, end;
for (int i = 0; sub.GetLink(i, out start, out end); i++)
{
m_Lines[i] = map.AddLine(start, end, ent, this);
}
// Peform standard completion steps
Complete();
}
/// <summary>
/// Handles a mouse down event
/// </summary>
/// <param name="p">The position where the click occurred</param>
/// <returns>True if the command handled the mouse down. False if it did nothing.</returns>
internal override bool LButtonDown(IPosition p)
{
// Find out what polygon we need to subdivide
IPointGeometry pg = PointGeometry.Create(p);
ISpatialIndex index = CadastralMapModel.Current.Index;
Polygon pol = new FindPointContainerQuery(index, pg).Result;
if (pol == null)
{
MessageBox.Show("Specified position does not fall inside any polygon.");
return(false);
}
PolygonSubdivisionOperation op = null;
try
{
// Form the links. Return if we didn't find any links.
PolygonSub sub = new PolygonSub(pol);
PointFeature start, end;
if (!sub.GetLink(0, out start, out end))
{
MessageBox.Show("Cannot locate any points to connect.");
return(true);
}
op = new PolygonSubdivisionOperation();
op.Execute(sub);
FinishCommand();
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
AbortCommand();
}
return(true);
}
/// <summary>
/// Handles a mouse down event
/// </summary>
/// <param name="p">The position where the click occurred</param>
/// <returns>True if the command handled the mouse down. False if it did nothing.</returns>
internal override bool LButtonDown(IPosition p)
{
// Find out what polygon we need to subdivide
IPointGeometry pg = PointGeometry.Create(p);
ISpatialIndex index = CadastralMapModel.Current.Index;
Polygon pol = new FindPointContainerQuery(index, pg).Result;
if (pol==null)
{
MessageBox.Show("Specified position does not fall inside any polygon.");
return false;
}
PolygonSubdivisionOperation op = null;
try
{
// Form the links. Return if we didn't find any links.
PolygonSub sub = new PolygonSub(pol);
PointFeature start, end;
if (!sub.GetLink(0, out start, out end))
{
MessageBox.Show("Cannot locate any points to connect.");
return true;
}
op = new PolygonSubdivisionOperation();
op.Execute(sub);
FinishCommand();
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
AbortCommand();
}
return true;
}
/// <summary>
/// Executes this operation.
/// </summary>
/// <param name="sub">The polygon subdivision information.</param>
internal void Execute(PolygonSub sub)
{
int numLine = sub.NumLink;
if (numLine==0)
throw new Exception("PolygonSubdivisionOperation.Execute - Nothing to add");
// If the polygon contains just one label, de-activate it. This covers a "well-behaved" situation,
// where the label inside the polygon is likely to be redundant after the subdivision (it also
// conforms to logic used in the past). In a situation where the polygon contains multiple labels,
// it's less clear whether the labels become redundant or not, so we keep them all.
Polygon pol = sub.Polygon;
if (pol.LabelCount == 1)
{
m_Label = pol.Label;
if (m_Label!=null)
m_Label.IsInactive = true;
}
// Mark the polygon for deletion
pol.IsDeleted = true;
// Get the default entity type for lines.
CadastralMapModel map = MapModel;
IEntity ent = map.DefaultLineType;
// Allocate array to point to the lines we will be creating.
m_Lines = new LineFeature[numLine];
// Add lines for each link
PointFeature start, end;
for (int i=0; sub.GetLink(i, out start, out end); i++)
{
m_Lines[i] = map.AddLine(start, end, ent, this);
}
// Peform standard completion steps
Complete();
}
