/// <summary>
/// Computes Tangent for a curve segment
/// </summary>
public static void AutoCalcTangent(FVector2D prevP, FVector2D p, FVector2D nextP, float tension, out FVector2D outTan)
{
outTan = (1.0f - tension) * ((p - prevP) + (nextP - p));
}
/// <summary>
/// Transform the given Value relative to the input range to the Output Range.
/// </summary>
public static float GetMappedRangeValueUnclamped(FVector2D inputRange, FVector2D outputRange, float value)
{
return(GetRangeValue(outputRange, GetRangePct(inputRange, value)));
}
/// <summary>
/// For the given Value clamped to the [Input:Range] inclusive, returns the corresponding percentage in [Output:Range] Inclusive.
/// </summary>
public static float GetMappedRangeValueClamped(FVector2D inputRange, FVector2D outputRange, float value)
{
float clampedPct = Clamp(GetRangePct(inputRange, value), 0.0f, 1.0f);
return(GetRangeValue(outputRange, clampedPct));
}
/// <summary>
/// Basically a Vector2d version of Lerp.
/// </summary>
public static float GetRangeValue(FVector2D range, float pct)
{
return(Lerp(range.X, range.Y, pct));
}
/// <summary>
/// Calculates the percentage along a line from MinValue to MaxValue that Value is.
/// </summary>
/// <returns></returns>
public static float GetRangePct(FVector2D range, float value)
{
return(GetRangePct(range.X, range.Y, value));
}
/// <summary>
/// Performs a linear interpolation between two values, Alpha ranges from 0-1
/// </summary>
public static FVector2D LerpStable(FVector2D a, FVector2D b, float alpha)
{
return(new FVector2D(
FMath.LerpStable(a.X, b.X, alpha),
FMath.LerpStable(a.Y, b.Y, alpha)));
}