/// <summary>
/// Tries to calculate the position of the parallel line.
/// </summary>
/// <returns>True if parallel positions calculated ok.</returns>
bool Calculate()
{
// Ensure any previously defined end positions have been reset.
m_Par1 = m_Par2 = null;
// Can't do nothing if the reference line is undefined.
if (m_Line == null)
{
return(false);
}
// Calculate the parallel points, depending on what sort of
// observation we've got.
IPosition sres = null;
IPosition eres = null;
bool ok = false;
if (m_Offset != null)
{
ok = ParallelLineUI.Calculate(m_Line, m_Offset, out sres, out eres);
}
else if (m_OffsetPoint != null)
{
ok = ParallelLineUI.Calculate(m_Line, m_OffsetPoint, out sres, out eres);
}
// If the calculation succeeded, allocate vertices to hold the results we got.
if (ok)
{
m_Par1 = sres;
m_Par2 = eres;
}
return(ok);
}
/// <summary>
/// Calculates positions that are parallel to a line.
/// </summary>
/// <param name="line">The reference line.</param>
/// <param name="offset">The observed offset (either a <c>Distance</c> or an <c>OffsetPoint</c>).</param>
/// <param name="sres">The position of the start of the parallel.</param>
/// <param name="eres">The position of the end of the parallel.</param>
/// <returns>True if positions calculated ok</returns>
internal static bool Calculate(LineFeature line, Observation offset, out IPosition sres, out IPosition eres)
{
sres = eres = null;
// Can't calculate if there is insufficient data.
if (line == null || offset == null)
{
return(false);
}
// Is it an observed distance?
Distance dist = (offset as Distance);
if (dist != null)
{
return(ParallelLineUI.Calculate(line, dist, out sres, out eres));
}
// The only other thing it could be is an offset point.
OffsetPoint offPoint = (offset as OffsetPoint);
if (offPoint != null)
{
PointFeature point = offPoint.Point;
return(ParallelLineUI.Calculate(line, point, out sres, out eres));
}
MessageBox.Show("ParallelLineUI.Calculate - Unexpected sort of observation");
return(false);
}
internal TerminalControl(ParallelLineUI cmd, bool isLast)
{
InitializeComponent();
m_Cmd = cmd;
m_IsLast = isLast;
m_Line = null;
m_Terminal = null;
}
private void LineParallel(IUserAction action)
{
try
{
IControlContainer cc = CreateContainer(action);
CommandUI cmd = new ParallelLineUI(cc, action);
m_Controller.StartCommand(cmd);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
