public void get_segment()
{
var lineString = new LineString2(_points);
lineString.GetSegment(1).B.Should().Be(_points[2]);
lineString.GetSegment(2).A.Should().Be(_points[2]);
}
public void expected_size_constructor()
{
var lineString = new LineString2(10);
lineString.Should().HaveCount(0);
lineString.SegmentCount.Should().Be(0);
}
public void get_mbr_basic() {
var lineString = new LineString2(_points);
var mbr = lineString.GetMbr();
mbr.Should().Be(new Mbr(0, 0, 6, 6));
}
public void intersection_testing() {
var lineString = new LineString2(_points);
lineString.Intersects(new Point2(1, 3)).Should().BeTrue();
lineString.Intersects(new Point2(6, 6)).Should().BeTrue();
lineString.Intersects(new Point2(1, 5)).Should().BeFalse();
}
public void default_constructor()
{
var lineString = new LineString2();
lineString.Should().HaveCount(0);
lineString.SegmentCount.Should().Be(0);
}
public void points_constructor()
{
var lineString = new LineString2(_points);
lineString.Should().HaveCount(_points.Length);
lineString.SegmentCount.Should().Be(_points.Length - 1);
lineString.Should().Equal(_points);
}
public void intersection_testing()
{
var lineString = new LineString2(_points);
lineString.Intersects(new Point2(1, 3)).Should().BeTrue();
lineString.Intersects(new Point2(6, 6)).Should().BeTrue();
lineString.Intersects(new Point2(1, 5)).Should().BeFalse();
}
public void get_mbr_basic()
{
var lineString = new LineString2(_points);
var mbr = lineString.GetMbr();
mbr.Should().Be(new Mbr(0, 0, 6, 6));
}
public void distance_squared()
{
var lineString = new LineString2(_points);
_points.Select(lineString.DistanceSquared).Should().OnlyContain(x => x == 0);
lineString.DistanceSquared(new Point2(1, 3)).Should().Be(0);
lineString.DistanceSquared(new Point2(1, 5)).Should().Be(
lineString.GetSegment(2).DistanceSquared(new Point2(1, 5)));
}
public void magnitude_squared() {
var lineString = new LineString2(_points);
var expectedMagnitude = Enumerable.Range(0, lineString.SegmentCount)
.Select(i => lineString.GetSegment(i))
.Select(s => s.GetMagnitude())
.Sum();
var actual = lineString.GetMagnitudeSquared();
actual.Should().Be(expectedMagnitude * expectedMagnitude);
}
public void segment_count() {
var a = new LineString2();
var b = new LineString2(new[] { Point2.Zero });
var c = new LineString2(new[] { Point2.Zero, Point2.Zero.Add(Vector2.XUnit) });
var d = new LineString2(_points);
a.SegmentCount.Should().Be(0);
b.SegmentCount.Should().Be(0);
c.SegmentCount.Should().Be(1);
d.SegmentCount.Should().Be(_points.Length-1);
}
public void segment_count()
{
var a = new LineString2();
var b = new LineString2(new[] { Point2.Zero });
var c = new LineString2(new[] { Point2.Zero, Point2.Zero.Add(Vector2.XUnit) });
var d = new LineString2(_points);
a.SegmentCount.Should().Be(0);
b.SegmentCount.Should().Be(0);
c.SegmentCount.Should().Be(1);
d.SegmentCount.Should().Be(_points.Length - 1);
}
public void magnitude_squared()
{
var lineString = new LineString2(_points);
var expectedMagnitude = Enumerable.Range(0, lineString.SegmentCount)
.Select(i => lineString.GetSegment(i))
.Select(s => s.GetMagnitude())
.Sum();
var actual = lineString.GetMagnitudeSquared();
actual.Should().Be(expectedMagnitude * expectedMagnitude);
}
public void centroid()
{
var lineString = new LineString2(_points);
var centroid = lineString.GetCentroid();
Assert.Equal(
((1.5 * 18.0) + (2.5 * 10.0) + (1 * 5.0) + (1 * 20.0) + (4 * 41.0)) / 94.0,
centroid.X,
10);
Assert.Equal(
((1.5 * 18.0) + (4.5 * 10.0) + (5.5 * 5.0) + (3 * 20.0) + (3.5 * 41.0)) / 94.0,
centroid.Y,
10);
}
public void distance_squared() {
var lineString = new LineString2(_points);
_points.Select(lineString.DistanceSquared).Should().OnlyContain(x => x == 0);
lineString.DistanceSquared(new Point2(1, 3)).Should().Be(0);
lineString.DistanceSquared(new Point2(1, 5)).Should().Be(
lineString.GetSegment(2).DistanceSquared(new Point2(1, 5)));
}
public void expected_size_constructor() {
var lineString = new LineString2(10);
lineString.Should().HaveCount(0);
lineString.SegmentCount.Should().Be(0);
}
public void default_constructor() {
var lineString = new LineString2();
lineString.Should().HaveCount(0);
lineString.SegmentCount.Should().Be(0);
}
public void get_segment() {
var lineString = new LineString2(_points);
lineString.GetSegment(1).B.Should().Be(_points[2]);
lineString.GetSegment(2).A.Should().Be(_points[2]);
}
public void centroid() {
var lineString = new LineString2(_points);
var centroid = lineString.GetCentroid();
Assert.Equal(
((1.5 * 18.0) + (2.5 * 10.0) + (1 * 5.0) + (1 * 20.0) + (4 * 41.0)) / 94.0,
centroid.X,
10);
Assert.Equal(
((1.5 * 18.0) + (4.5 * 10.0) + (5.5 * 5.0) + (3 * 20.0) + (3.5 * 41.0)) / 94.0,
centroid.Y,
10);
}
public void points_constructor() {
var lineString = new LineString2(_points);
lineString.Should().HaveCount(_points.Length);
lineString.SegmentCount.Should().Be(_points.Length - 1);
lineString.Should().Equal(_points);
}
