/// <summary>
/// Returns an approximate zero vector, but contains the original direction.
/// To recover the vector for calculation, call <see cref="Normalized"/>
/// </summary>
/// <param name="vector3"></param>
/// <returns></returns>
public static Vector3 Minimized(this in Vector3 vector3)
{
var values = new IeeeFloat[] { vector3.x, vector3.y, vector3.z };
var maxExp = byte.MinValue;
var minExp = byte.MaxValue;
for (var i = 0; i < 3; i++)
{
var exp = values[i].Exponent;
if (exp > maxExp)
{
maxExp = exp;
}
if (exp < minExp && exp >= maxExp - Accuracy)
{
minExp = exp;
}
}
for (var i = 0; i < 3; i++)
{
if (values[i].Exponent < minExp)
{
values[i] = 0;
}
else
{
values[i].Exponent -= minExp;
}
}
return(new Vector3(values[0], values[1], values[2]));
}
/// <summary>
/// Returns the normalized vector of a minimized vector.
/// </summary>
/// <param name="vector3"></param>
/// <returns></returns>
public static Vector3 Normalized(this in Vector3 vector3)
{
var values = new IeeeFloat[] { vector3.x, vector3.y, vector3.z };
var maxExp = values.Aggregate(byte.MinValue, (b, f) => f.Exponent > b ? f.Exponent : b);
var grow = 127 - maxExp;
if (grow <= 0)
{
return(new Vector3(values[0], values[1], values[2]).normalized);
}
for (var i = 0; i < 3; i++)
{
if (values[i].Equals(IeeeFloat.Zero))
{
continue;
}
values[i].Exponent += (byte)grow;
}
return(new Vector3(values[0], values[1], values[2]).normalized);
}