static float BiasWithContext(float x, float bias, BiasLerpContext context)
{
if (x <= 0.0f)
{
return(0.0f);
}
if (x >= 1.0f)
{
return(1.0f);
}
if (bias != context.lastBias)
{
if (bias <= 0.0f)
{
return(x >= 1.0f ? 1.0f : 0.0f);
}
else if (bias >= 1.0f)
{
return(x > 0.0f ? 1.0f : 0.0f);
}
else if (bias == 0.5f)
{
return(x);
}
context.lastExponent = Mathf.Log(bias) * -1.4427f;
context.lastBias = bias;
}
return(Mathf.Pow(x, context.lastExponent));
}
public static float BiasedLerp(float x, float bias, BiasLerpContext context)
{
float result = bias <= 0.5f? BiasWithContext(CommonTools.FastAbs(x), bias, context) :
1.0f - BiasWithContext(1.0f - CommonTools.FastAbs(x), 1.0f - bias, context);
return(x < 0.0f? -result : result);
}
