// ReSharper disable once MethodTooLong
internal Tuple <Point, Point> Calculate([NotNull] ICircle circle,
[NotNull] Tuple <double, double> xt1And2,
[NotNull] Tuple <double, double> yt1And2)
{
if (AreInputFieldsValid(circle,
xt1And2,
yt1And2))
{
return(new Tuple <Point, Point>(Point.Unknown,
Point.Unknown));
}
double xt1 = xt1And2.Item1;
double xt2 = xt1And2.Item2;
double yt1 = yt1And2.Item1;
double yt2 = yt1And2.Item2;
var pointOne = new Point(xt1,
yt1);
var pointTwo = new Point(xt2,
yt2);
if (!circle.IsPointOnCircle(pointOne))
{
pointOne = new Point(xt1,
yt2);
pointTwo = new Point(xt2,
yt1);
if (!circle.IsPointOnCircle(pointOne))
{
PointIsNotOnCircle(circle,
pointOne);
}
}
if (!circle.IsPointOnCircle(pointTwo))
{
PointIsNotOnCircle(circle,
pointTwo);
}
return(new Tuple <Point, Point>(pointOne,
pointTwo));
}
internal bool ValidatePoint([NotNull] ICircle circle,
[NotNull] Point startPoint)
{
return(circle.IsPointOnCircle(startPoint));
}