/// <summary>
/// Performs the data processing associated with this editing operation.
/// </summary>
/// <param name="ctx">The context in which the geometry is being calculated.</param>
internal override void CalculateGeometry(EditingContext ctx)
{
// Calculate the end positions
IPosition spos, epos;
if (!Calculate(out spos, out epos))
{
throw new Exception("Failed to calculate parallel line positions");
}
// Apply the calculated positions so long as the end points of the parallel line
// were created by this edit
if (m_ParLine.StartPoint.Creator == this)
{
m_ParLine.StartPoint.ApplyPointGeometry(ctx, PointGeometry.Create(spos));
}
if (m_ParLine.EndPoint.Creator == this)
{
m_ParLine.EndPoint.ApplyPointGeometry(ctx, PointGeometry.Create(epos));
}
// If the parallel is an arc, define the geometry
if (m_ParLine is ArcFeature)
{
// Get the center of the reference line
ArcFeature refArc = m_RefLine.GetArcBase();
PointFeature center = refArc.Circle.CenterPoint;
// Obtain a circle for the parallel
double radius = Geom.Distance(center, m_ParLine.StartPoint);
Circle circle = MapModel.AddCircle(center, radius);
// Define arc direction
bool iscw = refArc.IsClockwise;
if (IsArcReversed)
{
iscw = !iscw;
}
ArcGeometry geom = new ArcGeometry(circle, m_ParLine.StartPoint, m_ParLine.EndPoint, iscw);
(m_ParLine as ArcFeature).Geometry = geom;
}
}
