// Start the figure.
public void BeginFigure(double x, double y, double?z, double?m)
{
_currentLineForSegment1 = new LRSLine(_srid);
_currentLineForSegment2 = new LRSLine(_srid);
// just add it to the second segment once split point is reached
if (m != null && (_splitPointReached && m.Value.NotEqualsTo(_splitPointMeasure)))
{
_currentLineForSegment2.AddPoint(x, y, z, m);
return;
}
if (m < _splitPointMeasure)
{
_currentLineForSegment1.AddPoint(x, y, null, m);
}
else if (m > _splitPointMeasure || IsEqualToSplitMeasure(m))
{
_currentLineForSegment2.AddPoint(x, y, null, m);
_splitPointReached = IsEqualToSplitMeasure(m);
}
if (m != null)
{
_lastM = (double)m;
}
}
// Start the geometry.
public void BeginGeometry(OpenGisGeometryType type)
{
if (type == OpenGisGeometryType.LineString)
{
_currentLine = new LRSLine(_srid);
}
}
public void LRSLineStringTest()
{
var lrsLine = new LRSLine(4326);
var wkt = lrsLine.ToString();
Assert.AreEqual(wkt, "LINESTRING EMPTY");
lrsLine.AddPoint(new LRSPoint(1, 1, 0, 1, 4326));
lrsLine.AddPoint(new LRSPoint(2, 2, null, null, 4326));
lrsLine.LocatePoint(3);
lrsLine.AddPoint(new LRSPoint(3, 3, 0, 3, 4326), new LRSPoint(4, 4, 0, 4, 4326));
var enumerator = lrsLine.GetEnumerator();
enumerator.MoveNext();
enumerator.MoveNext();
enumerator.MoveNext();
enumerator.MoveNext();
var currentPoint = enumerator.Current;
Assert.AreEqual(currentPoint, new LRSPoint(4, 4, 0, 4, 4326));
try
{
enumerator.MoveNext();
// ReSharper disable once RedundantAssignment
currentPoint = enumerator.Current;
}
catch (InvalidOperationException)
{
enumerator.Reset();
}
}
// This operates on LineStrings, multi linestring
public void BeginFigure(double x, double y, double?z, double?m)
{
_currentLine = new LRSLine(_srid);
_currentLine.AddPoint(x, y, null, _currentPointM);
// Memorize the starting point.
_lastPoint = SqlGeometry.Point(x, y, _srid);
}
// Start the geometry.
public void BeginGeometry(OpenGisGeometryType type)
{
if (type == OpenGisGeometryType.LineString)
{
CurrentLine = new LRSLine();
CurrentLine.SetSrid(Srid);
}
}
// Just add the points to the current line segment.
public void BeginFigure(double x, double y, double?z, double?m)
{
_currentLine = new LRSLine(_srid);
_currentLine.AddPoint(x, y, z, m);
}
// add segments to target
public void EndGeometry()
{
// if not multi line then add the current line to the collection.
if (!_isMultiLine)
{
_segment1.AddLine(_currentLineForSegment1);
_segment2.AddLine(_currentLineForSegment2);
}
// if line counter is 0 then it is multiline
// if 1 then it is linestring
if (_lineCounter == 0 || !_isMultiLine)
{
Segment1 = _segment1.ToSqlGeometry();
// TODO:: Messy logic to be meet as per Oracle; need to be re-factored
// if second is a multi line
// end measure of first line > end measure of last line
// then consider only first line
// by locating the point
if (!_segment1.IsEmpty && _segment2.IsMultiLine)
{
var endSegmentEndM = _segment2.GetLastLine().GetEndPointM();
var startSegmentStartM = _segment2.GetFirstLine().GetEndPointM();
if (startSegmentStartM > endSegmentEndM)
{
var trimmedLine = _segment2.GetFirstLine();
var newLRSLine = new LRSLine(_srid);
// add points up to end segment measure
foreach (var point in trimmedLine)
{
if (point.M < endSegmentEndM)
{
newLRSLine.AddPoint(point);
}
}
// add the end point
if (endSegmentEndM.EqualsTo(_splitPointMeasure))
{
newLRSLine.AddPoint(_splitPoint);
}
else
{
newLRSLine.AddPoint(trimmedLine.LocatePoint(endSegmentEndM, newLRSLine.GetEndPoint()));
}
Segment2 = newLRSLine.ToSqlGeometry();
}
// if end segment measure is equal to split measure; then return the split alone for second segment
else if (endSegmentEndM.EqualsTo(_splitPointMeasure))
{
Segment2 = _splitPoint;
}
else
{
Segment2 = _segment2.ToSqlGeometry();
}
}
else
{
Segment2 = _segment2.ToSqlGeometry();
}
}
else
{
if (_currentLineForSegment1.IsLine)
{
_segment1.AddLine(_currentLineForSegment1);
}
if (_currentLineForSegment2.IsLine)
{
_segment2.AddLine(_currentLineForSegment2);
}
// reset the line counter so that the child line strings chaining is done and return to base multiline type
_lineCounter--;
}
}
public void LRSMultiLineToSqlTest()
{
// empty LRS Point check
var point1 = new LRSPoint("LINESTRING EMPTY".GetGeom());
var hashCode = point1.GetHashCode();
Assert.IsTrue(hashCode > 0);
Assert.AreEqual(point1.ToString(), "POINT (0 0 )");
// LRS Point Equality check
point1 = new LRSPoint("POINT(1 1 0 1)".GetGeom());
var point2 = new LRSPoint("POINT(1 1 0 1)".GetGeom());
Assert.IsTrue(point1 == point2);
// range check
Assert.IsTrue(point1.IsXYWithinTolerance(point2, 0.5));
point2 = new LRSPoint("POINT(2 2 0 2)".GetGeom());
var point3 = new LRSPoint("POINT(3 3 0 3)".GetGeom());
var point4 = new LRSPoint("POINT(4 4 0 4)".GetGeom());
var lrsPoints = new List <LRSPoint> {
point1, point2, point3
};
// next and previous point
Assert.AreEqual(LRSPoint.GetNextPoint(ref lrsPoints, point2), point3);
Assert.AreEqual(LRSPoint.GetNextPoint(ref lrsPoints, point4), null);
Assert.AreEqual(LRSPoint.GetPreviousPoint(ref lrsPoints, point2), point1);
Assert.AreEqual(LRSPoint.GetPreviousPoint(ref lrsPoints, point4), null);
// Multiline
var lrs = new LRSMultiLine(4326);
SqlGeometryBuilder geomBuilder = null;
lrs.ToSqlGeometry(ref geomBuilder);
lrs.BuildSqlGeometry(ref geomBuilder);
geomBuilder = new SqlGeometryBuilder();
lrs.ToSqlGeometry(ref geomBuilder);
lrs.BuildSqlGeometry(ref geomBuilder);
var lrsLine = new LRSLine(4326);
lrsLine.AddPoint(new LRSPoint(1, 1, 0, 1, 4326));
lrs.AddLine(lrsLine);
geomBuilder = new SqlGeometryBuilder();
lrs.ToSqlGeometry(ref geomBuilder);
var lrsLine1 = new LRSLine(4326);
var wkt = lrs.ToString();
Assert.AreEqual("MULTILINESTRING EMPTY", wkt);
Assert.AreEqual(lrs.GetPointAtM(10), null);
var pt = new LRSPoint(1, 1, 0, 1, 4326);
lrsLine1.AddPoint(pt);
Assert.AreEqual(lrsLine1.ToString(), "POINT (1 1 1)");
pt = new LRSPoint(2, 2, 0, 2, 4326);
lrsLine1.AddPoint(pt);
lrs = new LRSMultiLine(4326);
lrs.AddLine(lrsLine1);
wkt = lrs.ToString();
Assert.AreEqual("LINESTRING (1 1 1, 2 2 2)", wkt);
var lrsLine2 = new LRSLine(4326);
pt = new LRSPoint(3, 3, 0, 3, 4326);
Assert.AreEqual(pt.ToString(), "POINT (3 3 3)");
lrsLine2.AddPoint(pt);
pt = new LRSPoint(4, 4, 0, 4, 4326);
lrsLine2.AddPoint(pt);
lrs = new LRSMultiLine(4326);
lrs.AddLine(lrsLine1);
lrs.AddLine(lrsLine2);
geomBuilder = null;
lrs.BuildSqlGeometry(ref geomBuilder);
Assert.AreEqual(lrs.GetPointAtM(10), null);
Assert.AreEqual(lrs.GetPointAtM(2), new LRSPoint(2, 2, 0, 2, 4326));
wkt = lrs.ToString();
lrs.RemoveFirst();
Assert.AreEqual(lrs.Count, 1);
lrs.RemoveLast();
Assert.AreEqual(lrs.Count, 0);
lrs.RemoveFirst();
lrs.RemoveLast();
Assert.AreEqual("MULTILINESTRING ((1 1 1, 2 2 2), (3 3 3, 4 4 4))", wkt);
}
