/// <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)
{
// Get the rotation & scale factor to apply.
PathInfo pd = new PathInfo(this);
// Go through each leg, creating the geometry for each span...
// (the following is based on the logic of PathInfo.Render)
// Initialize position to the start of the path.
IPosition gotend = m_From;
// Initial bearing is whatever the desired rotation is.
double bearing = pd.RotationInRadians;
double sfac = pd.ScaleFactor;
for (int i = 0; i < m_Legs.Count; i++)
{
Leg leg = m_Legs[i];
// Include any angle specified at the start of the leg
StraightLeg sLeg = (leg as StraightLeg);
if (sLeg != null)
{
bearing = sLeg.AddStartAngle(bearing);
}
// Determine exit bearing for circular leg (do it now, in case an extra leg complicates matters below)
double exitBearing = bearing;
CircularLeg cLeg = (leg as CircularLeg);
if (cLeg != null)
{
IPosition center, ec;
double bear2bc;
cLeg.GetPositions(gotend, bearing, sfac, out center, out bear2bc, out ec, out exitBearing);
// The circle should have been created already, but with an undefined radius
Circle circle = cLeg.Circle;
Debug.Assert(circle != null);
circle.Radius = cLeg.RadiusInMeters * sfac;
circle.CenterPoint.ApplyPointGeometry(ctx, PointGeometry.Create(center));
}
// Obtain geometry for each span and assign to attached features
SpanInfo[] spans = leg.PrimaryFace.Spans;
ILineGeometry[] sections = leg.GetSpanSections(gotend, bearing, sfac, spans);
AttachGeometry(ctx, spans, sections);
// Note the position at the end of the leg
IPointGeometry legEnd = sections[sections.Length - 1].End;
// If we're dealing with the first face of a staggered leg, process the second face
if (leg.AlternateFace != null)
{
// If this is the very last leg, make sure we use the path end point (there could
// conceivably be some roundoff).
if (i == m_Legs.Count - 1)
{
legEnd = m_To.PointGeometry;
}
spans = leg.AlternateFace.Spans;
sections = leg.GetSpanSections(gotend, legEnd, spans);
AttachGeometry(ctx, spans, sections);
}
// Get to the end of the leg
gotend = legEnd;
bearing = exitBearing;
}
}
