public void CanGetOrientationsForLinearLines()
{
double yMax;
const double resol = 0.0001;
var polyline = (IPolyline)CurveConstruction.StartLine(10, 0)
.LineTo(15, 5)
.Curve;
Assert.AreEqual(2, TopologicalLineUtils.CalculateOrientation(polyline, resol,
out yMax));
polyline = (IPolyline)CurveConstruction.StartLine(15, 5)
.LineTo(10, 0)
.Curve;
Assert.AreEqual(-2, TopologicalLineUtils.CalculateOrientation(polyline, resol,
out yMax));
polyline = (IPolyline)CurveConstruction.StartLine(10, 0)
.LineTo(15, 5)
.LineTo(10, 10)
.Curve;
Assert.AreEqual(-1, TopologicalLineUtils.CalculateOrientation(
polyline, resol, out yMax));
polyline = (IPolyline)CurveConstruction.StartLine(10, 10)
.LineTo(15, 5)
.LineTo(10, 0)
.Curve;
Assert.AreEqual(1, TopologicalLineUtils.CalculateOrientation(
polyline, resol, out yMax));
}
public void SegmentsLinearToAnglePerformance()
{
IPolycurve line = CurveConstruction.StartLine(10, 10).LineTo(11, 15).Curve;
for (var i = 0; i < _segmentPerformanceCount; i++)
{
double angle;
TopologicalLineUtils.CalculateToAngle((ISegmentCollection)line, out angle);
}
}
public void CanGetOrientationsForNonLinearLines()
{
const double resol = 0.0001;
double yMax;
var polyline = (IPolyline)CurveConstruction.StartLine(10, 0)
.BezierTo(12, 2, 12, 4, 10, 6)
.Curve;
Assert.AreEqual(-1, TopologicalLineUtils.CalculateOrientation(polyline, resol,
out yMax));
}
public void CanGetSegmentsAngle()
{
var line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.LineTo(11, 15)
.Curve;
double fromAngle;
double toAngle;
Assert.IsTrue(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsTrue(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
Assert.IsTrue(Math.Abs(fromAngle - toAngle - Math.PI) < 1e-12);
line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.LineTo(11, 11)
.LineTo(12, 15)
.Curve;
Assert.IsTrue(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsTrue(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
Assert.IsTrue(Math.Abs(fromAngle - toAngle - Math.PI) > 1e-12);
line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.LineTo(10, 10)
.LineTo(11, 15)
.Curve;
Assert.IsTrue(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsTrue(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
Assert.IsTrue(Math.Abs(fromAngle - toAngle - Math.PI) < 1e-12);
line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.LineTo(10, 10)
.LineTo(10, 10)
.Curve;
Assert.IsFalse(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsFalse(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.BezierTo(10, 10, 11, 11, 11, 11)
.Curve;
Assert.IsTrue(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsTrue(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
Assert.IsTrue(Math.Abs(fromAngle - toAngle - Math.PI) < 1e-12);
line = (ISegmentCollection)CurveConstruction.StartLine(10, 10)
.BezierTo(11, 10, 12, 11, 12, 12)
.Curve;
Assert.IsTrue(TopologicalLineUtils.CalculateFromAngle(line, out fromAngle));
Assert.IsTrue(TopologicalLineUtils.CalculateToAngle(line, out toAngle));
Assert.IsTrue(Math.Abs(fromAngle) < 1e-12);
Assert.IsTrue(Math.Abs(toAngle + Math.PI / 2) < 1e-12);
}
public void SegmentNonLinearToAnglePerformance()
{
IPolycurve line = CurveConstruction.StartLine(10, 10)
.BezierTo(11, 12, 11, 13, 12, 15)
.Curve;
for (var i = 0; i < _segmentPerformanceCount; i++)
{
var segs = (ISegmentCollection)line;
ISegment seg = segs.Segment[segs.SegmentCount - 1];
double angle;
TopologicalLineUtils.CalculateToAngle(seg, out angle);
}
}