/// <summary>
/// Creates a new simple line segment.
/// </summary>
/// <param name="start">The point at the start of the new line.</param>
/// <param name="end">The point at the end of the new line.</param>
/// <remarks>When you add a new line segment, the two end points will be referenced both to the
/// new line, and to the editing operation that defined the line. While this is a bit verbose,
/// it's consistent.</remarks>
internal void Execute(PointFeature start, PointFeature end)
{
// Disallow an attempt to add a null line.
if (start.Geometry.IsCoincident(end.Geometry))
{
throw new Exception("NewLineOperation.Execute - Attempt to add null line.");
}
// Add the new line with default entity type.
CadastralMapModel mapModel = this.MapModel;
LineFeature newLine = mapModel.AddLine(start, end, mapModel.DefaultLineType, this);
base.SetNewLine(newLine);
// Peform standard completion steps
Complete();
}
/// <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();
}
