public override void AdvanceAnimation(Animation animation, float delta)
{
var previousTime = animation.TimeInternal;
var currentTime = previousTime + delta;
animation.TimeInternal = currentTime;
if (!animation.NextMarkerOrTriggerTime.HasValue)
{
var frameIndex = AnimationUtils.SecondsToFrames(currentTime);
var frameTime = AnimationUtils.SecondsPerFrame * frameIndex;
var stepOverFrame = previousTime <= frameTime && frameTime <= currentTime;
animation.NextMarkerOrTriggerTime = GetNextMarkerOrTriggerTime(animation, frameIndex + (stepOverFrame ? 0 : 1));
}
if (!animation.NextMarkerOrTriggerTime.HasValue || currentTime <= animation.NextMarkerOrTriggerTime.Value)
{
ApplyAnimators(animation, invokeTriggers: false);
}
else
{
var frameTime = animation.NextMarkerOrTriggerTime.Value;
var frameIndex = AnimationUtils.SecondsToFrames(frameTime);
animation.NextMarkerOrTriggerTime = null;
var currentMarker = animation.Markers.GetByFrame(frameIndex);
if (currentMarker != null)
{
ProcessMarker(animation, currentMarker);
}
ApplyAnimators(animation, invokeTriggers: true, animationTimeCorrection: previousTime - frameTime);
if (!animation.IsRunning)
{
animation.RaiseStopped();
}
}
}
private void CacheInterpolationParameters(double time)
{
int count = ReadonlyKeys.Count;
if (count == 0)
{
Value2 = default(T);
minTime = -float.MaxValue;
maxTime = float.MaxValue;
function = KeyFunction.Steep;
return;
}
var i = keyIndex;
if (i >= count)
{
i = count - 1;
}
int frame = AnimationUtils.SecondsToFrames(time);
// find rightmost key on the left from the given frame
while (i < count - 1 && frame > ReadonlyKeys[i].Frame)
{
i++;
}
while (i >= 0 && frame < ReadonlyKeys[i].Frame)
{
i--;
}
keyIndex = i;
int minFrame, maxFrame;
if (i < 0)
{
keyIndex = 0;
maxFrame = ReadonlyKeys[0].Frame;
minFrame = int.MinValue;
Value2 = ReadonlyKeys[0].Value;
function = KeyFunction.Steep;
}
else if (i == count - 1)
{
minFrame = ReadonlyKeys[i].Frame;
maxFrame = int.MaxValue;
Value2 = ReadonlyKeys[i].Value;
function = KeyFunction.Steep;
}
else
{
var key1 = ReadonlyKeys[i];
var key2 = ReadonlyKeys[i + 1];
minFrame = key1.Frame;
maxFrame = key2.Frame;
Value2 = key1.Value;
Value3 = key2.Value;
function = key1.Function;
if (function == KeyFunction.Spline)
{
Value1 = ReadonlyKeys[i < 1 ? 0 : i - 1].Value;
Value4 = ReadonlyKeys[i + 1 >= count - 1 ? count - 1 : i + 2].Value;
}
else if (function == KeyFunction.ClosedSpline)
{
Value1 = ReadonlyKeys[i < 1 ? count - 2 : i - 1].Value;
Value4 = ReadonlyKeys[i + 1 >= count - 1 ? 1 : i + 2].Value;
}
}
minTime = minFrame * AnimationUtils.SecondsPerFrame;
maxTime = maxFrame * AnimationUtils.SecondsPerFrame;
}
private static int FixFrame(int frame, double fps = 30)
{
return(AnimationUtils.SecondsToFrames(frame / fps));
}