| public static Hermite ( float value1, float tangent1, float value2, float tangent2, float amount ) : float | ||
| value1 | float | |
| tangent1 | float | |
| value2 | float | |
| tangent2 | float | |
| amount | float | |
| return | float | |
public static float Hermite(float value1, float tangent1, float value2, float tangent2, float amount)
{
// originaly from https://github.com/mono/MonoGame/
// All transformed to double not to lose precission
// Otherwise, for high numbers of param:amount the result is NaN instead of Infinity
double v1 = value1, v2 = value2, t1 = tangent1, t2 = tangent2, s = amount, result;
double sCubed = s * s * s;
double sSquared = s * s;
if (amount == 0f)
result = value1;
else if (amount == 1f)
result = value2;
else
result = (2 * v1 - 2 * v2 + t2 + t1) * sCubed +
(3 * v2 - 3 * v1 - 2 * t1 - t2) * sSquared +
t1 * s +
v1;
return (float)result;
}
/// <summary>
/// Interpolates between two values using a cubic equation.
/// </summary>
/// <param name="value1">Source value.</param>
/// <param name="value2">Source value.</param>
/// <param name="amount">Weighting value.</param>
/// <returns>Interpolated value.</returns>
public static float SmoothStep(float value1, float value2, float amount)
{
// originaly from https://github.com/mono/MonoGame/
// It is expected that 0 < amount < 1
// If amount < 0, return value1
// If amount > 1, return value2
float result = MathHelper.Clamp(amount * UnityEngine.Time.deltaTime, 0f, 1f);
result = MathHelper.Hermite(value1, 0f, value2, 0f, result);
return(result);
}
