static void Main(string[] args)
{
for (var i = 0; i < 100; i++)
{
var num = i / 10f;
var a = MathF.Sqrt(num);
var b = MathHelpres.FastSqrt(num);
Console.WriteLine($"{num}: {a} vs {b}");
}
for (var i = 0; i < 100; i++)
{
var num = i / 10.0;
var a = Math.Sqrt(num);
var b = MathHelpres.FastSqrt(num);
Console.WriteLine($"{num}: {a} vs {b}");
}
//BenchmarkRunner.Run<Md5_Sha256>();
BenchmarkRunner.Run <Sqrt_FastSqrt>();
Console.ReadKey();
}
public override bool GetIntersection(Ray ray, double maxDistance, out Hit hit, out double distance)
{
hit = new Hit();
var delta = ray.Origin - Position;
var a = Dot(ray.Direction, ray.Direction);
var b = 2 * Dot(ray.Direction, delta);
var c = Dot(delta, delta) - Radius * Radius;
double dt = b * b - 4 * a * c;
if (dt < 0)
{
distance = 0;
return(false);
}
else
{
double D = (-b - MathHelpres.FastSqrt(dt)) / (a * 2);
if (D < 0)
{
distance = 0;
return(false);
}
var position = ray.Origin + ray.Direction * (float)D;
var dist = Distance(position, ray.Origin);
if (dist > maxDistance)
{
distance = dist;
return(false);
}
hit.Position = position;
hit.Normal = CalcNormal(hit.Position);
hit.HitObject = this;
distance = dist;
return(hit.IsHitting);
}
}
public double FastSqrt64() => MathHelpres.FastSqrt(_double);
public float FastSqrt32() => MathHelpres.FastSqrt(_single);