/// <summary>Creates a specific <see cref="IOneDimRegion"/> object that represents the intersection of two intervals.
/// </summary>
/// <param name="interval1">The first interval; ignored if <c>null</c>.</param>
/// <param name="interval2">The second interval; ignored if <c>null</c>.</param>
/// <returns>The specific <see cref="IOneDimRegion"/> that represents the intersection of <paramref name="interval1"/> and <paramref name="interval2"/>.</returns>
public static IOneDimRegion Create(IOneDimRegion interval1, IOneDimRegion interval2)
{
if ((interval1 == null) || (interval1 is RealAxis))
{
return((interval2 == null) ? RealAxis : interval2);
}
if ((interval2 == null) || (interval2 is RealAxis))
{
return((interval1 == null) ? RealAxis : interval1);
}
double a = DoMath.Max(interval1.Infimum, interval2.Infimum);
double b = DoMath.Min(interval1.Supremum, interval2.Supremum);
return(Create(a, b));
}
/// <summary>Initializes a new instance of the <see cref="OneDimOptimizerConstraint" /> class.
/// </summary>
/// <param name="constraintDescriptor">The constraint descriptor in its <see cref="OneDimOptimizerConstraintFactory"/> representation that serves as factory for the current object.</param>
/// <param name="constraint">The constraint of the optimizer in its <see cref="IOneDimRegion"/> representation.</param>
internal OneDimOptimizerConstraint(OneDimOptimizerConstraintFactory constraintDescriptor, IOneDimRegion constraint)
{
Factory = constraintDescriptor;
IntervalRepresentation = constraint;
}
/// <summary>Initializes a new instance of the <see cref="OneDimRootFinderConstraint" /> class.
/// </summary>
/// <param name="constraintFactory">The constraint descriptor in its <see cref="OneDimRootFinderConstraintFactory"/> representation that serves as factory for the current object.</param>
/// <param name="constraint">The constraint of the optimizer in its <see cref="IOneDimRegion"/> representation.</param>
internal OneDimRootFinderConstraint(OneDimRootFinderConstraintFactory constraintFactory, IOneDimRegion constraint)
{
Factory = constraintFactory;
IntervalRepresentation = constraint;
}
/// <summary>Creates a new <see cref="OneDimOptimizer.IConstraint"/> object.
/// </summary>
/// <param name="constraintDescriptor">The specific <see cref="OneDimOptimizer.IConstraintFactory"/> object.</param>
/// <param name="interval">The specific constraint in its <see cref="IOneDimRegion"/> representation, i.e. the argument of the objective function are constrainted to lie in the specified interval.</param>
/// <returns>A specific <see cref="OneDimOptimizer.IConstraint"/> object with respect to the specified optimization algorithm.</returns>
/// <exception cref="InvalidOperationException">Thrown, if the optimization algorithm does not support this kind of constraints.</exception>
/// <exception cref="ArgumentException">Thrown, if <paramref name="interval"/> can not be cast to one of the following one-dimensional interval representation:
/// <see cref="RealAxis"/>, <see cref="Interval.Bounded"/>, <see cref="Interval.LeftBounded"/>, <see cref="Interval.RightBounded"/>.</exception>
public static OneDimOptimizer.IConstraint Create(this OneDimOptimizer.IConstraintFactory constraintDescriptor, IOneDimRegion interval)
{
if (interval == null)
{
return(constraintDescriptor.Create(Interval.RealAxis));
}
if (interval is RealAxis)
{
return(constraintDescriptor.Create((RealAxis)interval));
}
else if (interval is Interval.Bounded)
{
return(constraintDescriptor.Create((Interval.Bounded)interval));
}
else if (interval is Interval.LeftBounded)
{
return(constraintDescriptor.Create((Interval.LeftBounded)interval));
}
else if (interval is Interval.RightBounded)
{
return(constraintDescriptor.Create((Interval.RightBounded)interval));
}
throw new ArgumentException("Do not support the specific 1-dimensional interval constraint.", nameof(interval));
}
/// <summary>Creates a new <see cref="IOneDimOptimizerAlgorithm"/> object.
/// </summary>
/// <param name="oneDimOptimizer">The <see cref="OneDimOptimizer"/> object.</param>
/// <param name="interval">The constraint in its <see cref="IOneDimRegion"/> representation.</param>
/// <returns>A new <see cref="IOneDimOptimizerAlgorithm"/> object.</returns>
public static IOneDimOptimizerAlgorithm Create(this OneDimOptimizer oneDimOptimizer, IOneDimRegion interval)
{
if (interval == null)
{
return(oneDimOptimizer.Create(oneDimOptimizer.Constraint.Create(Interval.RealAxis)));
}
var constraint = oneDimOptimizer.Constraint.Create(interval);
return(oneDimOptimizer.Create(constraint));
}
