| 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 | |
/// <summary>
/// Creates a new <see cref="Vector2"/> that contains hermite spline interpolation.
/// </summary>
/// <param name="value1">The first position vector.</param>
/// <param name="tangent1">The first tangent vector.</param>
/// <param name="value2">The second position vector.</param>
/// <param name="tangent2">The second tangent vector.</param>
/// <param name="amount">Weighting factor.</param>
/// <param name="result">The hermite spline interpolation vector as an output parameter.</param>
public static void Hermite(
ref Vector2 value1,
ref Vector2 tangent1,
ref Vector2 value2,
ref Vector2 tangent2,
float amount,
out Vector2 result
)
{
result.X = MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
result.Y = MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
}
/// <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)
{
/* It is expected that 0 < amount < 1.
* If amount < 0, return value1.
* If amount > 1, return value2.
*/
float result = MathHelper.Clamp(amount, 0f, 1f);
result = MathHelper.Hermite(value1, 0f, value2, 0f, result);
return(result);
}
public static float SmoothStep(float value1, float value2, float amount)
{
// It is expected that 0 < amount < 1
// If amount < 0, return value1
// If amount > 1, return value2
#if (USE_FARSEER)
float result = SilverSpriteMathHelper.Clamp(amount, 0f, 1f);
result = SilverSpriteMathHelper.Hermite(value1, 0f, value2, 0f, result);
#else
float result = MathHelper.Clamp(amount, 0f, 1f);
result = MathHelper.Hermite(value1, 0f, value2, 0f, result);
#endif
return(result);
}
public static void Hermite(
ref Vector4 value1,
ref Vector4 tangent1,
ref Vector4 value2,
ref Vector4 tangent2,
float amount,
out Vector4 result
)
{
result.W = MathHelper.Hermite(value1.W, tangent1.W, value2.W, tangent2.W, amount);
result.X = MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
result.Y = MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
result.Z = MathHelper.Hermite(value1.Z, tangent1.Z, value2.Z, tangent2.Z, amount);
}
public static void Hermite(ref Vector4 value1, ref Vector4 tangent1, ref Vector4 value2, ref Vector4 tangent2, float amount, out Vector4 result)
{
#if (USE_FARSEER)
result.W = SilverSpriteMathHelper.Hermite(value1.W, tangent1.W, value2.W, tangent2.W, amount);
result.X = SilverSpriteMathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
result.Y = SilverSpriteMathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
result.Z = SilverSpriteMathHelper.Hermite(value1.Z, tangent1.Z, value2.Z, tangent2.Z, amount);
#else
result.W = MathHelper.Hermite(value1.W, tangent1.W, value2.W, tangent2.W, amount);
result.X = MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
result.Y = MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
result.Z = MathHelper.Hermite(value1.Z, tangent1.Z, value2.Z, tangent2.Z, amount);
#endif
}
public static void Hermite(ref Vector3 value1, ref Vector3 tangent1, ref Vector3 value2, ref Vector3 tangent2, FP amount, out Vector3 result)
{
result.X = MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
result.Y = MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
result.Z = MathHelper.Hermite(value1.Z, tangent1.Z, value2.Z, tangent2.Z, amount);
}
public static FP SmoothStep(FP value1, FP value2, FP amount)
{
FP amount2 = MathHelper.Clamp(amount, 0f, 1f);
return(MathHelper.Hermite(value1, 0f, value2, 0f, amount2));
}
public static float SmoothStep(float value1, float value2, float amount)
{
float amount1 = MathHelper.Clamp(amount, 0.0f, 1f);
return(MathHelper.Hermite(value1, 0.0f, value2, 0.0f, amount1));
}
public static Vector2 Hermite(Vector2 value1, Vector2 tangent1, Vector2 value2, Vector2 tangent2, float amount)
{
value1.X = MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount);
value1.Y = MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount);
return(value1);
}
/// <summary>
/// Creates a new <see cref="Vector3"/> that contains hermite spline interpolation.
/// </summary>
/// <param name="value1">The first position vector.</param>
/// <param name="tangent1">The first tangent vector.</param>
/// <param name="value2">The second position vector.</param>
/// <param name="tangent2">The second tangent vector.</param>
/// <param name="amount">Weighting factor.</param>
/// <returns>The hermite spline interpolation vector.</returns>
public static Vector3 Hermite(Vector3 value1, Vector3 tangent1, Vector3 value2, Vector3 tangent2, float amount)
{
return(new Vector3(MathHelper.Hermite(value1.X, tangent1.X, value2.X, tangent2.X, amount),
MathHelper.Hermite(value1.Y, tangent1.Y, value2.Y, tangent2.Y, amount),
MathHelper.Hermite(value1.Z, tangent1.Z, value2.Z, tangent2.Z, amount)));
}
