// int d = System.Enum.GetNames(typeof(d)).Length;
public static int Rand(float[] weight)
{
// 양수화
{
float minValue = float.MaxValue;
for (int i = 0; i < weight.Length; ++i)
{
if (weight[i] < minValue)
{
minValue = weight[i];
}
}
if (minValue < 0f)
{
for (int i = 0; i < weight.Length; ++i)
{
weight[i] -= minValue;
}
}
}
// 정규화, 0에서 1까지 증가하는 방식으로.
float[] normalizedIncreasingWeight = new float[weight.Length];
{
float sumWeight = 0f;
for (int i = 0; i < weight.Length; ++i)
{
sumWeight += weight[i];
}
for (int i = 0; i < weight.Length; ++i)
{
normalizedIncreasingWeight[i] = weight[i] / sumWeight;
if (i > 0)
{
normalizedIncreasingWeight[i] += normalizedIncreasingWeight[i - 1];
}
}
}
//
float r = Rand(0f, 1f);
for (int i = 0; i < normalizedIncreasingWeight.Length; ++i)
{
if (normalizedIncreasingWeight[i] >= r)
{
return(i);
}
}
CustomLog.CompleteLogError("Assert");
return(0);
}
