| public static Lerp ( Double t, Double a, Double b ) : Double | ||
| t | Double | |
| a | Double | |
| b | Double | |
| return | Double | |
public override Double Get(Double x, Double y, Double z, Double w)
{
var value = this.Source.Get(x, y, z, w);
var falloff = this.Falloff.Get(x, y, z, w);
var threshold = this.Threshold.Get(x, y, z, w);
if (falloff > 0.0)
{
if (value < (threshold - falloff))
{
// Lies outside of falloff area below threshold, return first source
return(this.Low.Get(x, y, z, w));
}
if (value > (threshold + falloff))
{
// Lise outside of falloff area above threshold, return second source
return(this.High.Get(x, y, z, w));
}
// Lies within falloff area.
var lower = threshold - falloff;
var upper = threshold + falloff;
var blend = Utilities.QuinticBlend((value - lower) / (upper - lower));
return(Utilities.Lerp(blend, this.Low.Get(x, y, z, w), this.High.Get(x, y, z, w)));
}
return(value < threshold?this.Low.Get(x, y, z, w) : this.High.Get(x, y, z, w));
}
public override Double Get(Double x, Double y, Double z, Double w, Double u, Double v)
{
var v1 = this.Low.Get(x, y, z, w, u, v);
var v2 = this.High.Get(x, y, z, w, u, v);
var blend = this.Source.Get(x, y, z, w, u, v);
return(Utilities.Lerp(blend, v1, v2));
}
public override Double Get(Double x, Double y)
{
var v1 = this.Low.Get(x, y);
var v2 = this.High.Get(x, y);
var blend = (this.Source.Get(x, y) + 1.0) * 0.5;
return(Utilities.Lerp(blend, v1, v2));
}