private float CalculateRadius(Vector3 start, Vector3 middle, Vector3 end, Vector3 control)
{
float radius;
float tangent1 = VectorUtils.LengthXZ(control - start);
float tangent2 = VectorUtils.LengthXZ(control - end);
if (Mathf.Abs(tangent1 - tangent2) <= Mathf.Abs(tangent1 * .0001f))
{
radius = tangent1;
}
else
{
float area = Triangle3.Area(start, middle, end);
float sideLength1 = Vector3.Distance(start, middle);
float sideLength2 = Vector3.Distance(middle, end);
float sideLength3 = Vector3.Distance(end, start);
radius = 1 / (4 * area / (sideLength1 * sideLength2 * sideLength3));
}
return(radius);
}
