public void TestResampleVertices()
{
var path = new JuiceStreamPath();
path.Add(-100, -10);
path.Add(100, 50);
path.ResampleVertices(new double[]
{
-50,
0,
70,
120
});
Assert.That(path.Vertices, Is.EqualTo(new[]
{
new JuiceStreamPathVertex(-100, -10),
new JuiceStreamPathVertex(-50, -5),
new JuiceStreamPathVertex(0, 0),
new JuiceStreamPathVertex(70, 35),
new JuiceStreamPathVertex(100, 50),
new JuiceStreamPathVertex(100, 50),
}));
path.Clear();
path.SetVertexPosition(0, 10);
path.ResampleVertices(Array.Empty <double>());
Assert.That(path.Vertices, Is.EqualTo(new[]
{
new JuiceStreamPathVertex(0, 10)
}));
}
public void TestInvalidation()
{
var path = new JuiceStreamPath();
Assert.That(path.InvalidationID, Is.EqualTo(1));
int previousId = path.InvalidationID;
path.InsertVertex(10);
checkNewId();
path.SetVertexPosition(1, 5);
checkNewId();
path.Add(20, 0);
checkNewId();
path.RemoveVertices((v, _) => v.Distance == 20);
checkNewId();
path.ResampleVertices(new double[] { 5, 10, 15 });
checkNewId();
path.Clear();
checkNewId();
path.ConvertFromSliderPath(new SliderPath());
checkNewId();
void checkNewId()
{
Assert.That(path.InvalidationID, Is.Not.EqualTo(previousId));
previousId = path.InvalidationID;
}
}
public void TestRandomConvertFromSliderPath()
{
var rng = new Random(1);
var path = new JuiceStreamPath();
var sliderPath = new SliderPath();
for (int iteration = 0; iteration < 10000; iteration++)
{
sliderPath.ControlPoints.Clear();
do
{
int start = sliderPath.ControlPoints.Count;
do
{
float x = (float)(rng.NextDouble() * 1e3);
float y = (float)(rng.NextDouble() * 1e3);
sliderPath.ControlPoints.Add(new PathControlPoint(new Vector2(x, y)));
} while (rng.Next(2) != 0);
int length = sliderPath.ControlPoints.Count - start + 1;
sliderPath.ControlPoints[start].Type = length <= 2 ? PathType.Linear : length == 3 ? PathType.PerfectCurve : PathType.Bezier;
} while (rng.Next(3) != 0);
if (rng.Next(5) == 0)
{
sliderPath.ExpectedDistance.Value = rng.NextDouble() * 3e3;
}
else
{
sliderPath.ExpectedDistance.Value = null;
}
path.ConvertFromSliderPath(sliderPath);
Assert.That(path.Vertices[0].Distance, Is.EqualTo(0));
Assert.That(path.Distance, Is.EqualTo(sliderPath.Distance).Within(1e-3));
assertInvariants(path.Vertices, true);
double[] sampleDistances = Enumerable.Range(0, 10)
.Select(_ => rng.NextDouble() * sliderPath.Distance)
.ToArray();
foreach (double distance in sampleDistances)
{
float expected = sliderPath.PositionAt(distance / sliderPath.Distance).X;
Assert.That(path.PositionAtDistance(distance), Is.EqualTo(expected).Within(1e-3));
}
path.ResampleVertices(sampleDistances);
assertInvariants(path.Vertices, true);
foreach (double distance in sampleDistances)
{
float expected = sliderPath.PositionAt(distance / sliderPath.Distance).X;
Assert.That(path.PositionAtDistance(distance), Is.EqualTo(expected).Within(1e-3));
}
}
}