/// <summary>
/// Called when the current frame has changed. Update the controls accordingly.
/// </summary>
public void UpdateAnimations()
{
foreach (GUIAnimationChannel animation in AnimationChannels)
{
GUIControl control = animation.Control;
if (control == null)
{
continue;
}
// Find the bracketing keyframes
KeyFrame startFrame = null;
KeyFrame endFrame = null;
foreach (KeyFrame keyFrame in animation.KeyFrames)
{
if (keyFrame.Frame <= Frame)
{
startFrame = keyFrame;
}
else if (keyFrame.Frame > Frame && endFrame == null)
{
endFrame = keyFrame;
}
}
// Now that we have the start and end frame, figure out the updated specifics
// for this control
if (startFrame == null && endFrame == null)
{
continue;
}
float factor = 0.0f;
if (startFrame != null && endFrame != null)
{
factor = (float)(Frame - startFrame.Frame) / (float)(endFrame.Frame - startFrame.Frame);
factor = (float)Math.Round(factor, 3);
factor = Otter.Interface.Utilities.CalculateEase(factor, (int)startFrame.EaseFunction, startFrame.EaseAmount);
}
// Give the factor only a 3 decimal precision.
factor = (float)Math.Round(factor, 3);
control.ApplyKeyFrame(startFrame, endFrame, factor);
}
}