public void Execute(int index)
{
if (Keys.Length == 0)
{
Value[index] = 0;
return;
}
int prevIndex = CachedKeysIndices[index + firstIndex - 1];
if (prevIndex == -1)
{
Value[index] = Keys[0].value;
return;
}
if (prevIndex == Keys.Length - 1)
{
Value[index] = Keys[Keys.Length - 1].value;
return;
}
keyStruct prevKey = Keys[prevIndex];
switch (prevKey.interpolation)
{
case Interpolation.Constant:
Value[index] = prevKey.value;
break;
case Interpolation.Linear:
keyStruct nextKey = Keys[prevIndex + 1];
float dt = (index - prevKey.frame) / (float)(nextKey.frame - prevKey.frame);
float oneMinusDt = 1f - dt;
Value[index] = prevKey.value * oneMinusDt + nextKey.value * dt;
break;
case Interpolation.Bezier:
keyStruct nextKey1 = Keys[prevIndex + 1];
Vector2 A = new Vector2(prevKey.frame, prevKey.value);
Vector2 D = new Vector2(nextKey1.frame, nextKey1.value);
Vector2 B = A + prevKey.outTangent;
Vector2 C = D - nextKey1.inTangent;
Value[index] = Bezier.EvaluateBezier(A, B, C, D, index + firstIndex);
break;
}
}
