/// <summary>
/// Retrieve values for all dimensions for all 4 control points.
/// </summary>
/// <returns>
/// A 2 dimensional array with all the dimension values for all 4 control points.
/// The first dimension of the array indicates the control point, the second the dimension.
/// </returns>
double[][] RetrieveValues(int smallerIndex, int biggerIndex, AbstractTypeInterpolationProvider <TValue, TMath> typeProvider)
{
// Retrieve required values.
TValue p0 = KeyPoints[smallerIndex != 0 ? smallerIndex - 1 : smallerIndex];
TValue p1 = KeyPoints[smallerIndex];
TValue p2 = KeyPoints[biggerIndex];
TValue p3 = KeyPoints[biggerIndex != KeyPoints.Count - 1 ? biggerIndex + 1 : biggerIndex];
// Retrieve required dimension values.
Converter <TMath, double> toDoubleConverter = from => CastOperator <TMath, double> .Cast(from);
double[] p0Values = Array.ConvertAll(typeProvider.GetDimensionValues(p0), toDoubleConverter);
double[] p1Values = Array.ConvertAll(typeProvider.GetDimensionValues(p1), toDoubleConverter);
double[] p2Values = Array.ConvertAll(typeProvider.GetDimensionValues(p2), toDoubleConverter);
double[] p3Values = Array.ConvertAll(typeProvider.GetDimensionValues(p3), toDoubleConverter);
return(new[] { p0Values, p1Values, p2Values, p3Values });
}
protected override TValue Interpolate(int smallerIndex, int biggerIndex, TMath position, double percentage)
{
AbstractTypeInterpolationProvider <TValue, TMath> typeProvider = KeyPoints.TypeProvider;
// Retrieve required values.
TValue smaller = KeyPoints[smallerIndex];
TValue bigger = KeyPoints[biggerIndex];
// Retrieve required dimension values.
TMath[] smallerValues = typeProvider.GetDimensionValues(smaller);
TMath[] biggerValues = typeProvider.GetDimensionValues(bigger);
// Linear interpolation.
var interpolated = new TMath[typeProvider.AmountOfDimensions];
for (int i = 0; i < typeProvider.AmountOfDimensions; ++i)
{
var valueRange = new Interval <TMath>(smallerValues[i], biggerValues[i]);
interpolated[i] = valueRange.GetValueAt(percentage);
}
return(typeProvider.CreateInstance(position, interpolated));
}