private string GetErrorMessage([NotNull] ZMonotonicitySequence sequence)
{
var sb = new StringBuilder();
string segmentInfo = sequence.SegmentCount == 1
? "one segment"
: string.Format("{0} segments",
sequence.SegmentCount);
sb.AppendFormat("Z values are {0} for {1}",
GetMonotonicityTypeString(sequence.MonotonicityType,
sequence.FeatureIsFlipped),
segmentInfo);
if (sequence.MonotonicityType == esriMonotinicityEnum.esriValueDecreases ||
sequence.MonotonicityType == esriMonotinicityEnum.esriValueIncreases)
{
sb.AppendFormat(". {0}",
GetExpectedMonotonicityString(sequence,
ExpectedMonotonicity));
if (sequence.FeatureIsFlipped != null &&
sequence.FeatureIsFlipped.Value)
{
sb.Append(" (against the feature orientation)");
}
}
return(sb.ToString());
}
private static string GetExpectedMonotonicityString(
[NotNull] ZMonotonicitySequence sequence,
MonotonicityDirection expectedMonotonicity)
{
switch (expectedMonotonicity)
{
case MonotonicityDirection.Decreasing:
return("The Z values should be decreasing");
case MonotonicityDirection.Increasing:
return("The Z values should be increasing");
case MonotonicityDirection.Any:
return(string.Format("The Z value trend for the line is {0}",
GetMonotonicityTypeString(
sequence.FeatureMonotonicityTrend,
sequence.FeatureIsFlipped)));
default:
throw new ArgumentException(
string.Format("Unexpected monotonicity direction: {0}",
expectedMonotonicity));
}
}
private static IEnumerable <ZMonotonicitySequence> GetErrorSequencesFromSinglePart(
[NotNull] IPolyline singlePartPolyline,
MonotonicityDirection expectedMonotonicity,
[NotNull] Func <bool> isFeatureFlipped,
bool allowConstantValues)
{
bool?featureFlipped = null;
var points = (IPointCollection4)singlePartPolyline;
int segmentCount = points.PointCount - 1;
WKSPointZ[] wksPointZs = new WKSPointZ[points.PointCount];
GeometryUtils.QueryWKSPointZs(points, wksPointZs);
ZMonotonicitySequence currentSequence = null;
double trend = wksPointZs[segmentCount].Z - wksPointZs[0].Z;
esriMonotinicityEnum monotonicityTrend =
MeasureUtils.GetMonotonicityType(trend);
var checkedMonotonicity = GetCheckedMonotonicityDirection(
expectedMonotonicity,
monotonicityTrend);
esriMonotinicityEnum?preMonotonicity = null;
IEnumSegment enumSegments = null;
bool?recycling = null;
for (int segmentIndex = 0; segmentIndex < segmentCount; segmentIndex++)
{
double dz = wksPointZs[segmentIndex + 1].Z - wksPointZs[segmentIndex].Z;
esriMonotinicityEnum monotonicity = MeasureUtils.GetMonotonicityType(dz);
if (monotonicity == esriMonotinicityEnum.esriValueDecreases ||
monotonicity == esriMonotinicityEnum.esriValueIncreases)
{
if (!featureFlipped.HasValue)
{
featureFlipped = isFeatureFlipped();
}
if (featureFlipped.Value)
{
monotonicity =
monotonicity == esriMonotinicityEnum.esriValueDecreases
? esriMonotinicityEnum.esriValueIncreases
: esriMonotinicityEnum.esriValueDecreases;
}
}
if (monotonicity != preMonotonicity)
{
if (currentSequence != null)
{
yield return(currentSequence);
}
preMonotonicity = monotonicity;
currentSequence = null;
}
if (currentSequence == null)
{
if (monotonicity == esriMonotinicityEnum.esriValueLevel &&
allowConstantValues)
{
// ok
}
else if (monotonicity == esriMonotinicityEnum.esriValueIncreases &&
checkedMonotonicity == MonotonicityDirection.Increasing)
{
// ok
}
else if (monotonicity == esriMonotinicityEnum.esriValueDecreases &&
checkedMonotonicity == MonotonicityDirection.Decreasing)
{
// ok
}
else if (checkedMonotonicity == MonotonicityDirection.Any)
{
if (monotonicity == esriMonotinicityEnum.esriValueIncreases)
{
checkedMonotonicity = MonotonicityDirection.Increasing;
}
else if (monotonicity == esriMonotinicityEnum.esriValueDecreases)
{
checkedMonotonicity = MonotonicityDirection.Decreasing;
}
}
else
{
currentSequence =
new ZMonotonicitySequence(monotonicity,
singlePartPolyline.SpatialReference)
{
FeatureMonotonicityTrend = monotonicityTrend,
FeatureIsFlipped = featureFlipped
};
}
}
if (currentSequence != null)
{
if (enumSegments == null)
{
enumSegments = ((ISegmentCollection)singlePartPolyline)
.EnumSegments;
}
var segment = GetSegment(enumSegments, segmentIndex);
if (!recycling.HasValue)
{
recycling = enumSegments.IsRecycling;
}
currentSequence.Add(recycling.Value
? GeometryFactory.Clone(segment)
: segment);
if (recycling.Value)
{
Marshal.ReleaseComObject(segment);
}
}
}
if (currentSequence != null)
{
yield return(currentSequence);
}
if (enumSegments != null)
{
enumSegments.Reset();
}
}