public static Float2 Rotate(this Float2 v, float radians)
{
var ca = MathFast.Cos(radians);
var sa = MathFast.Sin(radians);
return(new Float2(ca * v.X - sa * v.Y, sa * v.X + ca * v.Y));
}
void SinTest()
{
Debug.Log(">>>>> sin tests >>>>>");
const int T = 10000;
var sw = new System.Diagnostics.Stopwatch();
float f;
float s = 1.345f;
sw.Reset();
sw.Start();
for (int i = 0; i < T; i++)
{
f = Mathf.Sin(s);
}
sw.Stop();
Debug.LogFormat("mathf.sin time on {0} iterations: {1}", T, sw.ElapsedTicks);
sw.Reset();
sw.Start();
for (int i = 0; i < T; i++)
{
f = (float)System.Math.Sin(s);
}
sw.Stop();
Debug.LogFormat("system.math.sin time on {0} iterations: {1}", T, sw.ElapsedTicks);
// Warmup cache.
f = MathFast.Sin(s);
sw.Reset();
sw.Start();
for (int i = 0; i < T; i++)
{
f = MathFast.Sin(s);
}
sw.Stop();
Debug.LogFormat("mathfast.sin time on {0} iterations: {1}", T, sw.ElapsedTicks);
var rng = Service <Rng> .Get();
for (int i = 0; i < 10; i++)
{
f = rng.GetFloat() * MathFast.PI_2;
Debug.LogFormat("sin({0}) => {1} / {2}", f, Mathf.Sin(f), MathFast.Sin(f));
}
}
