public void TestRandomConvertFromSliderPath(double velocity)
{
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, velocity);
Assert.That(path.Vertices[0].Time, Is.EqualTo(0));
Assert.That(path.Duration * velocity, Is.EqualTo(sliderPath.Distance).Within(1e-3));
assertInvariants(path.Vertices);
double[] sampleTimes = Enumerable.Range(0, 10)
.Select(_ => rng.NextDouble() * sliderPath.Distance / velocity)
.ToArray();
foreach (double time in sampleTimes)
{
float expected = sliderPath.PositionAt(time * velocity / sliderPath.Distance).X;
Assert.That(path.PositionAtTime(time), Is.EqualTo(expected).Within(1e-3));
}
path.ResampleVertices(sampleTimes);
assertInvariants(path.Vertices);
foreach (double time in sampleTimes)
{
float expected = sliderPath.PositionAt(time * velocity / sliderPath.Distance).X;
Assert.That(path.PositionAtTime(time), Is.EqualTo(expected).Within(1e-3));
}
}
}
public void TestRandomInsertSetPosition(double scale, bool checkSlope, bool integralValues)
{
var rng = new Random(1);
var path = new JuiceStreamPath();
for (int iteration = 0; iteration < 100000; iteration++)
{
if (rng.Next(10) == 0)
{
path.Clear();
}
int vertexCount = path.Vertices.Count;
switch (rng.Next(2))
{
case 0:
{
double time = rng.NextDouble() * scale * 2 - scale;
if (integralValues)
{
time = Math.Round(time);
}
float oldX = path.PositionAtTime(time);
int index = path.InsertVertex(time);
Assert.That(path.Vertices.Count, Is.EqualTo(vertexCount + 1));
Assert.That(path.Vertices[index].Time, Is.EqualTo(time));
Assert.That(path.Vertices[index].X, Is.EqualTo(oldX));
break;
}
case 1:
{
int index = rng.Next(path.Vertices.Count);
double time = path.Vertices[index].Time;
float newX = (float)(rng.NextDouble() * scale * 2 - scale);
if (integralValues)
{
newX = MathF.Round(newX);
}
path.SetVertexPosition(index, newX);
Assert.That(path.Vertices.Count, Is.EqualTo(vertexCount));
Assert.That(path.Vertices[index].Time, Is.EqualTo(time));
Assert.That(path.Vertices[index].X, Is.EqualTo(newX));
break;
}
}
assertInvariants(path.Vertices);
}
}
public void TestRandomConvertToSliderPath()
{
var rng = new Random(1);
var path = new JuiceStreamPath();
var sliderPath = new SliderPath();
for (int iteration = 0; iteration < 10000; iteration++)
{
path.Clear();
do
{
double time = rng.NextDouble() * 1e3;
float x = (float)(rng.NextDouble() * 1e3);
path.Add(time, x);
} while (rng.Next(5) != 0);
float sliderStartY = (float)(rng.NextDouble() * JuiceStreamPath.OSU_PLAYFIELD_HEIGHT);
double requiredVelocity = path.ComputeRequiredVelocity();
double velocity = Math.Clamp(requiredVelocity, 1, 100);
path.ConvertToSliderPath(sliderPath, sliderStartY, velocity);
foreach (var point in sliderPath.ControlPoints)
{
Assert.That(point.Type, Is.EqualTo(PathType.Linear).Or.Null);
Assert.That(sliderStartY + point.Position.Y, Is.InRange(0, JuiceStreamPath.OSU_PLAYFIELD_HEIGHT));
}
Assert.That(sliderPath.ControlPoints[0].Position.X, Is.EqualTo(path.Vertices[0].X));
// The path is preserved only if required velocity is used.
if (velocity < requiredVelocity)
{
continue;
}
Assert.That(sliderPath.Distance / velocity, Is.EqualTo(path.Duration).Within(1e-3));
for (int i = 0; i < 10; i++)
{
double time = rng.NextDouble() * path.Duration;
float expected = path.PositionAtTime(time);
Assert.That(sliderPath.PositionAt(time * velocity / sliderPath.Distance).X, Is.EqualTo(expected).Within(3e-3));
}
}
}
