/// <summary>
/// Creates a new array slice that refers to <paramref name="count"/> elements in the given <paramref name="containingArray"/>,
/// starting from the element at index <paramref name="offset"/>.
/// </summary>
/// <param name="containingArray">The array to represent. Must not be null.</param>
/// <param name="offset">The index of the first element in <paramref name="containingArray"/> to include in this slice.</param>
/// <param name="count">The number of elements in <paramref name="containingArray"/> to include in this slice.</param>
public ArraySlice(T[] containingArray, uint offset, uint count)
{
Assure.NotNull(containingArray);
Assure.LessThanOrEqualTo(
offset + count,
containingArray.Length,
"offset + count must be less than or equal to the containing array's length."
);
this.ContainingArray = containingArray;
this.Offset = offset;
this.Length = count;
}
public void TestLessThanOrEqualTo()
{
// Define variables and constants
const int FIVE = 5;
const int FOUR = 4;
// Set up context
// Execute
Assure.LessThanOrEqualTo(FOUR, FIVE);
Assure.LessThanOrEqualTo(FOUR, FOUR);
try {
Assure.LessThanOrEqualTo(FIVE, FOUR);
Assert.Fail();
}
catch (AssuranceFailedException) {
}
// Assert outcome
}
/// <summary>
/// Gets the radius of the circle taken by slicing through this sphere at the given distance from its centre.
/// </summary>
/// <param name="distanceFromCentre">The distance from the centre to get the slice's radius for.</param>
/// <returns>The radius of the circle at the given distance from the sphere's centre.</returns>
/// <exception cref="AssuranceFailedException">Thrown if <paramref name="distanceFromCentre"/> is greater than
/// <see cref="Radius"/>.</exception>
public float GetRadius(float distanceFromCentre)
{
Assure.LessThanOrEqualTo(distanceFromCentre, Radius, "Distance from centre must be smaller than or equal to the sphere radius!");
return((float)Math.Sqrt((Radius * Radius) - (distanceFromCentre * distanceFromCentre)));
}
