public void TestRandomPointWithinForZPlane()
{
IRandom randomNumberGenerator = new DefaultRandom();
Plane3 zPlane = new Plane3(Vector3.UnitZ * 2.0f, Vector3.Backward);
for (int index = 0; index < Specifications.ProbabilisticFunctionSamples; ++index)
{
Vector3 randomPoint = zPlane.RandomPointWithin(randomNumberGenerator);
Assert.IsTrue(float.IsInfinity(randomPoint.X));
Assert.IsTrue(float.IsInfinity(randomPoint.Y));
Assert.AreEqual(2.0f, randomPoint.Z);
}
}
public void TestRandomPointWithin()
{
IRandom randomNumberGenerator = new DefaultRandom();
// A random point has to involve infinity (since the chance that of hitting the
// meager numeric range of a float, or any other finite number system, is about
// zero for a infinitely large plane). But given the orientation of the plane,
// only these combinations of positive and negative infinity can be possible.
Vector3[] possiblePoints = new Vector3[] {
new Vector3(float.NegativeInfinity, float.PositiveInfinity, float.PositiveInfinity),
new Vector3(float.NegativeInfinity, float.NegativeInfinity, float.PositiveInfinity),
new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.NegativeInfinity),
new Vector3(float.PositiveInfinity, float.NegativeInfinity, float.NegativeInfinity),
};
Plane3 plane = new Plane3(Vector3.Zero, Vector3.Normalize(Vector3.One));
for (int index = 0; index < Specifications.ProbabilisticFunctionSamples; ++index)
{
Vector3 randomPoint = plane.RandomPointWithin(randomNumberGenerator);
//Assert.That(randomPoint, Is.OneOf(possiblePoints));
CollectionAssert.Contains(possiblePoints, randomPoint);
}
}
public void TestRandomPointWithin() {
IRandom randomNumberGenerator = new DefaultRandom();
// A random point has to involve infinity (since the chance that of hitting the
// meager numeric range of a float, or any other finite number system, is about
// zero for a infinitely large plane). But given the orientation of the plane,
// only these combinations of positive and negative infinity can be possible.
Vector3[] possiblePoints = new Vector3[] {
new Vector3(float.NegativeInfinity, float.PositiveInfinity, float.PositiveInfinity),
new Vector3(float.NegativeInfinity, float.NegativeInfinity, float.PositiveInfinity),
new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.NegativeInfinity),
new Vector3(float.PositiveInfinity, float.NegativeInfinity, float.NegativeInfinity),
};
Plane3 plane = new Plane3(Vector3.Zero, Vector3.Normalize(Vector3.One));
for(int index = 0; index < Specifications.ProbabilisticFunctionSamples; ++index) {
Vector3 randomPoint = plane.RandomPointWithin(randomNumberGenerator);
//Assert.That(randomPoint, Is.OneOf(possiblePoints));
CollectionAssert.Contains(possiblePoints, randomPoint);
}
}
public void TestRandomPointWithinForZPlane() {
IRandom randomNumberGenerator = new DefaultRandom();
Plane3 zPlane = new Plane3(Vector3.UnitZ * 2.0f, Vector3.Backward);
for(int index = 0; index < Specifications.ProbabilisticFunctionSamples; ++index) {
Vector3 randomPoint = zPlane.RandomPointWithin(randomNumberGenerator);
Assert.IsTrue(float.IsInfinity(randomPoint.X));
Assert.IsTrue(float.IsInfinity(randomPoint.Y));
Assert.AreEqual(2.0f, randomPoint.Z);
}
}