public static double AbsoluteAngle2(double aX, double aY, double bX, double bY)
{
// Find the angle of point a and point b.
var test = -Angle2DTests.Angle2D(aX, aY, bX, bY) % PI;
return(test < 0d ? test += PI : test);
}
public static double AbsoluteAngle1(double aX, double aY, double bX, double bY)
{
// Find the angle of point a and point b.
var test = -Angle2DTests.Angle2D(aX, aY, bX, bY) % PI;
// This should only loop once using the modulus of pi.
while (test < 0d)
{
test += PI;
}
return(test);
}