// UnityEditor.CurveUtility.cs (c) Unity Technologies
public static void UpdateTangentsFromMode(AnimationCurve curve, int index)
{
if (index < 0 || index >= curve.length)
{
return;
}
Keyframe key = curve [index];
if (key.GetKeyTangentMode(0) == TangentMode.Linear && index >= 1)
{
key.inTangent = CalculateLinearTangent(curve, index, index - 1);
curve.MoveKey(index, key);
}
if (key.GetKeyTangentMode(1) == TangentMode.Linear && index + 1 < curve.length)
{
key.outTangent = CalculateLinearTangent(curve, index, index + 1);
curve.MoveKey(index, key);
}
if (key.GetKeyTangentMode(0) != TangentMode.Smooth && key.GetKeyTangentMode(1) != TangentMode.Smooth)
{
return;
}
curve.SmoothTangents(index, 0.0f);
}
public static void SetKeyTangentMode(this Keyframe key, int leftRight, TangentMode mode)
{
if (leftRight == 0)
{
key.tangentMode &= -7;
key.tangentMode |= (int)((int)mode << 1);
}
else
{
key.tangentMode &= -25;
key.tangentMode |= (int)((int)mode << 3);
}
if (key.GetKeyTangentMode(leftRight) != mode)
{
Debug.Log("bug");
}
}