public void GetParameter()
{
BezierSegment1F b = new BezierSegment1F()
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(0, CurveHelper.GetParameter(b, 1, 100)));
Assert.IsTrue(Numeric.AreEqual(1, CurveHelper.GetParameter(b, 8, 100)));
Assert.IsTrue(Numeric.AreEqual(0.3f, CurveHelper.GetParameter(b, b.GetPoint(0.3f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.4f, CurveHelper.GetParameter(b, b.GetPoint(0.4f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.5f, CurveHelper.GetParameter(b, b.GetPoint(0.5f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.6f, CurveHelper.GetParameter(b, b.GetPoint(0.6f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.9f, CurveHelper.GetParameter(b, b.GetPoint(0.9f), 100)));
Assert.IsFalse(Numeric.AreEqual(0.9f, CurveHelper.GetParameter(b, b.GetPoint(0.9f), 1))); // limited iterations.
for (int i = 0; i < 1000; i++)
{
float u = RandomHelper.Random.NextFloat(0, 1);
float point = b.GetPoint(u);
Assert.IsTrue(Numeric.AreEqual(u, CurveHelper.GetParameter(b, point, 100)));
}
for (int i = 0; i < 1000; i++)
{
float u = RandomHelper.Random.NextFloat(0, 1);
float point = b.GetPoint(u);
Assert.IsTrue(Numeric.AreEqual(u, CurveHelper.GetParameter(b, point, 100), 0.01f));
}
}
public void GetTangent()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(3 * (3 - 1), b.GetTangent(0)));
Assert.IsTrue(Numeric.AreEqual(3 * (8 - 4), b.GetTangent(1)));
}
public void GetTangent()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(3 * (3 - 1), b.GetTangent(0)));
Assert.IsTrue(Numeric.AreEqual(3 * (8 - 4), b.GetTangent(1)));
}
public void GetPoint()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(1, b.GetPoint(0)));
Assert.IsTrue(Numeric.AreEqual(8, b.GetPoint(1)));
Assert.IsTrue(Numeric.AreEqual(2.638f, b.GetPoint(0.3f)));
}
public void GetPoint()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(1, b.GetPoint(0)));
Assert.IsTrue(Numeric.AreEqual(8, b.GetPoint(1)));
Assert.IsTrue(Numeric.AreEqual(2.638f, b.GetPoint(0.3f)));
}
public void Flatten()
{
var s = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
var points = new List<float>();
s.Flatten(points, 1, 1);
Assert.AreEqual(2, points.Count);
Assert.IsTrue(points.Contains(s.Point1));
Assert.IsTrue(points.Contains(s.Point2));
}
public void Flatten()
{
var s = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
var points = new List <float>();
s.Flatten(points, 1, 1);
Assert.AreEqual(2, points.Count);
Assert.IsTrue(points.Contains(s.Point1));
Assert.IsTrue(points.Contains(s.Point2));
}
public void GetLength()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(7, b.GetLength(0, 1, 100, Numeric.EpsilonF)));
BezierSegment1F bSymmetric = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 6,
};
Assert.IsTrue(Numeric.AreEqual(2.5f, bSymmetric.GetLength(0.5f, 1, 100, Numeric.EpsilonF)));
}
public void GetLength()
{
BezierSegment1F b = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(7, b.GetLength(0, 1, 100, Numeric.EpsilonF)));
BezierSegment1F bSymmetric = new BezierSegment1F
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 6,
};
Assert.IsTrue(Numeric.AreEqual(2.5f, bSymmetric.GetLength(0.5f, 1, 100, Numeric.EpsilonF)));
}
public void GetParameter()
{
BezierSegment1F b = new BezierSegment1F()
{
Point1 = 1,
ControlPoint1 = 3,
ControlPoint2 = 4,
Point2 = 8,
};
Assert.IsTrue(Numeric.AreEqual(0, CurveHelper.GetParameter(b, 1, 100)));
Assert.IsTrue(Numeric.AreEqual(1, CurveHelper.GetParameter(b, 8, 100)));
Assert.IsTrue(Numeric.AreEqual(0.3f, CurveHelper.GetParameter(b, b.GetPoint(0.3f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.4f, CurveHelper.GetParameter(b, b.GetPoint(0.4f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.5f, CurveHelper.GetParameter(b, b.GetPoint(0.5f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.6f, CurveHelper.GetParameter(b, b.GetPoint(0.6f), 100)));
Assert.IsTrue(Numeric.AreEqual(0.9f, CurveHelper.GetParameter(b, b.GetPoint(0.9f), 100)));
Assert.IsFalse(Numeric.AreEqual(0.9f, CurveHelper.GetParameter(b, b.GetPoint(0.9f), 1))); // limited iterations.
for (int i=0; i<1000; i++)
{
float u = RandomHelper.Random.NextFloat(0, 1);
float point = b.GetPoint(u);
Assert.IsTrue(Numeric.AreEqual(u, CurveHelper.GetParameter(b, point, 100)));
}
for (int i = 0; i < 1000; i++)
{
float u = RandomHelper.Random.NextFloat(0, 1);
float point = b.GetPoint(u);
Assert.IsTrue(Numeric.AreEqual(u, CurveHelper.GetParameter(b, point, 100), 0.01f));
}
}
