public override BlendData GetResult()
{
for (int i = 0; i < UpstreamList.Count; i++)
{
BlendData data = UpstreamList[i].GetResult();
if (_cached == null)
{
_cached = (BlendData)Activator.CreateInstance(data.GetType());
}
if (i == 0)
{
_cached.CopyFrom(data);
}
else
{
_cached.CaculateAdd(_cached, data);
}
}
if (_cached == null)
{
throw new Exception("can not get blend data, upstream count is 0");
}
return(_cached);
}
public override BlendData GetResult()
{
for (int i = 0; i < UpstreamList.Count; i++)
{
//如果循环到了最后一个，那么直接使用最后一个的结果。因为最后一个，之后，没有可以跟它混合的了。
if (i == UpstreamList.Count - 1)
{
BlendData data = UpstreamList[UpstreamList.Count - 1].Node.GetResult();
if (_cached == null)
{
_cached = (BlendData)Activator.CreateInstance(data.GetType());
}
_cached.CopyFrom(data);
return(_cached);
}
// 除了最后一个之外，都使用，当前的和下一个，做混合。
Pair currentPair = UpstreamList[i];
Pair nextPair = UpstreamList[i + 1];
if (BlendParameter >= currentPair.Threshold && BlendParameter < nextPair.Threshold)
{
// lerp在 0~1之间。
float lerp = (BlendParameter - currentPair.Threshold) /
(nextPair.Threshold - currentPair.Threshold);
BlendData currentBlendData = currentPair.Node.GetResult();
BlendData nextBlendData = nextPair.Node.GetResult();
if (_cached == null)
{
_cached = (BlendData)Activator.CreateInstance(currentBlendData.GetType());
}
_cached.CaculateLerp(currentBlendData, nextBlendData, lerp);
return(_cached);
}
}
throw new Exception(string.Format("can not get blend data, current weight{0}", BlendParameter));
}
