public override void PlayStart(ITarget itarget, float frame, int frameRate, float animScale)
{
//swap to material instance
mMatCtrl.Apply(_matInd, GetMaterial(itarget));
base.PlayStart(itarget, frame, frameRate, animScale);
}
public override void previewFrame(ITarget target, float frame, int frameRate, bool play, float playSpeed)
{
if (keys == null || keys.Count <= 0)
{
return;
}
if (!mIsInit)
{
Init(target);
mMatCtrl.Apply(_matInd, GetMaterial(target));
}
int keyCount = keys.Count;
if (keyCount <= 0)
{
return;
}
int iFrame = Mathf.RoundToInt(frame);
var firstKey = keys[0] as MaterialKey;
//check if only key or behind first key
if (keyCount == 1 || iFrame <= firstKey.frame)
{
firstKey.ApplyValue(_propertyType, _property, mPropId, materialInstance);
return;
}
// if lies on property action
for (int i = 0; i < keys.Count; i++)
{
MaterialKey key = keys[i] as MaterialKey;
if (key.endFrame == -1) //invalid
{
continue;
}
//end of last path in track?
if (iFrame >= key.endFrame)
{
MaterialKey toKey = null;
if (key.interp == Key.Interpolation.None)
{
if (i + 1 == keyCount)
{
toKey = key;
}
}
else if (key.interp == Key.Interpolation.Linear || key.path == null)
{
if (i + 1 == keyCount - 1)
{
toKey = (MaterialKey)keys[i + 1];
}
}
else if (key.interp == Key.Interpolation.Curve)
{
if (i + key.keyCount == keyCount) //end of last path in track?
{
toKey = (MaterialKey)keys[i + key.keyCount - 1];
}
}
if (toKey != null)
{
toKey.ApplyValue(_propertyType, _property, mPropId, materialInstance);
return;
}
continue;
}
if (key.interp == Key.Interpolation.None)
{
key.ApplyValue(_propertyType, _property, mPropId, materialInstance);
}
else if (key.interp == Key.Interpolation.Linear || key.path == null)
{
MaterialKey keyNext = i + 1 < keys.Count ? keys[i + 1] as MaterialKey : null;
if (frame >= (float)key.endFrame && keyNext != null && (!keyNext.canTween || keyNext.endFrame != -1))
{
continue;
}
// if no ease
if (!key.canTween || keyNext == null)
{
key.ApplyValue(_propertyType, _property, mPropId, materialInstance);
return;
}
// else find value using easing function
float numFrames = (float)key.getNumberOfFrames(frameRate);
float framePositionInAction = Mathf.Clamp(frame - (float)key.frame, 0f, numFrames);
float t;
if (key.hasCustomEase())
{
t = Utility.EaseCustom(0.0f, 1.0f, framePositionInAction / key.getNumberOfFrames(frameRate), key.easeCurve);
}
else
{
var ease = Utility.GetEasingFunction((Ease)key.easeType);
t = ease(framePositionInAction, key.getNumberOfFrames(frameRate), key.amplitude, key.period);
}
MaterialKey.ApplyValueLerp(_propertyType, _property, mPropId, materialInstance, key, keyNext, t);
}
else if (key.interp == Key.Interpolation.Curve)
{
float t = Mathf.Clamp01((frame - key.frame) / key.getNumberOfFrames(frameRate));
MaterialKey.ApplyValuePath(_propertyType, _property, mPropId, materialInstance, key, t);
}
return;
}
}