public void TestForSaltReuse()
{
var seen = new HashSet <int>();
var rng = new StatelessRng(kSeed);
StatelessRng.SaltUsed = (salt) => {
Assert.IsTrue(seen.Add(salt), "Salt {0} is unused", salt);
};
try {
rng.OnUnitCircle(0); seen.Clear();
rng.InUnitCircle(0); seen.Clear();
rng.OnUnitSphere(0); seen.Clear();
rng.InUnitSphere(0); seen.Clear();
rng.Rotation(0); seen.Clear();
} finally {
StatelessRng.SaltUsed = null;
}
}
public void TestUniformity_Rotation()
{
var rng = new StatelessRng(kSeed);
Quaternion[] vals = Gen(i => rng.Rotation(i)).ToArray();
Func <Quaternion, Vector2> ParametrizeAxisAndAngle = q => {
Vector3 axis; // a unit vector
float angleRad;
q.ToAngleAxis(out angleRad, out axis);
Vector2 param01 = ParametrizeSphereSurfaceThetaZ(axis);
float param2 = ToAngle01(angleRad);
return(new Vector3(param01.x, param01.y, param2));
};
S.CheckUniformity(
new[] { "axis theta", "axis z", "angle" },
vals.Select(ParametrizeAxisAndAngle));
}