public static int IsInSet(Complex c)
{
if (MandelbrotFinder.IsInSet(c))
{
return(-1);
}
var rePrev = c.Real;
var imPrev = c.Imaginary;
double re = 0;
double im = 0;
for (int i = 0; i < Bailout; i++)
{
var reTemp = re * re - im * im + rePrev;
im = 2 * re * im + imPrev;
re = reTemp;
var magnitudeSquared = re * re + im * im;
if (magnitudeSquared > 4)
{
return(i);
}
}
return(-1);
}
private Tuple <Point, Color> PickColorForPoint(Point point, Area viewPort, Size resolution, bool checkForEdges, IEnumerable <Area> areasToInclude)
{
var number = viewPort.GetNumberFromPoint(resolution, point);
var color = PickColor(
() => checkForEdges && areasToInclude.Any(a => a.IsInside(number)),
() => MandelbrotFinder.IsInSet(number),
() => MandelbulbChecker.IsInsideBulbs(number));
return(Tuple.Create(point, color));
}