play(fromFrame:toFrame:) doesn't work properly with CA rendering engine

[siddharth952]

Which Version of Lottie are you using?

Lottie 4.4.2

Expected Behavior

When calling play(fromFrame:toFrame:completion:), I expect Lottie to play the animation in the given frame range properly but it somehow plays the last frame at the last for some reason

Actual Behavior

It should play the last frame in the range given

Animation JSON

Cannot share

Steps to reproduce

We need to use a Lottie file with IP = 30 eg: {"v":"5.9.0","fr":30,"ip":30,"op":210,"w":360,"h":270, .. }

Seems to occur if we use the CoreAnimation rendering engine LottieConfiguration.shared.renderingEngine = .coreAnimation

We would need to use a lottie which has two states eg:

Processing State (Frame: 0 to 100) -> This would be in autoReverse LottieLoopMode Final State (Frame: 101 - 200) -> This would be in playOnce LottieLoopMode

Now we use the following code to play from an specific frame range:

private func playAnimation(){
        animationView.animationSpeed = 1
        if fromFrame >= 0 {
            animationView.play(fromFrame: fromFrame ,toFrame: toFrame, loopMode: loopMode) { _ in }
        } else {
            animationView.loopMode = loopMode
            animationView.play { _ in }
        }
    }

[calda]

For us to investigate, share a sample animation and sample code that demonstrates this issue.

[github-actions[bot]]

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