/// <summary>
/// Updates the <see cref="CurrentFrame"/>, <see cref="NextFrame"/> and <see cref="CurrentFrameProgress"/> properties immediately.
/// This is called implicitly once each frame before drawing, so you don't normally call this. However, when changing animation
/// parameters and requiring updated animation frame data immediately, this could be helpful.
/// </summary>
public void UpdateVisibleFrames()
{
// Calculate visible frames
curAnimFrame = 0;
nextAnimFrame = 0;
curAnimFrameFade = 0.0f;
if (animFrameCount > 0 && animDuration > 0)
{
// Calculate currently visible frame
float frameTemp = animFrameCount * animTime / animDuration;
curAnimFrame = (int)frameTemp;
// Normalize current frame when exceeding anim duration
if (animLoopMode == LoopMode.Once || animLoopMode == LoopMode.FixedSingle)
{
curAnimFrame = MathF.Clamp(curAnimFrame, 0, animFrameCount - 1);
}
else
{
curAnimFrame = MathF.NormalizeVar(curAnimFrame, 0, animFrameCount);
}
// Calculate second frame and fade value
curAnimFrameFade = frameTemp - (int)frameTemp;
if (animLoopMode == LoopMode.Loop)
{
nextAnimFrame = MathF.NormalizeVar(curAnimFrame + 1, 0, animFrameCount);
}
else
{
nextAnimFrame = curAnimFrame + 1;
}
}
curAnimFrame = animFirstFrame + MathF.Clamp(curAnimFrame, 0, animFrameCount - 1);
nextAnimFrame = animFirstFrame + MathF.Clamp(nextAnimFrame, 0, animFrameCount - 1);
}