[animation-mixer] timeScale -1 not working for gltf animation #446
Comments
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Hi, there is even a more recent discussion #430 |
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I've solved it. GLBanireverse |
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Thanks @v5ma! I'm putting your index.html here for context: <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>GLBanireverse: The GLTF GLB Animation Mixer Reversible Control Example</title>
<script src="https://aframe.io/releases/1.5.0/aframe.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/c-frame/aframe-extras@7.4.0/dist/aframe-extras.min.js"></script>
</head>
<body>
<button id="forward">Forward</button>
<button id="backward">Backward</button>
<div id="myEmbeddedScene" style="width: 600px; height: 600px">
<a-scene embedded>
<a-assets>
<a-asset-item id="box"
src="https://cdn.glitch.global/9fd8c761-9851-4e63-b098-a2c6c76f905a/BoxAnimated_BoxMoves_Has10Frames.glb?v=1711472748160"></a-asset-item>
</a-assets>
<a-entity camera look-controls position="1 1 1"></a-entity>
<a-entity id="movingBox"
gltf-model="#box"
position="2 1 -2"
animation-mixer="clip: CubeAction; loop: once; clampWhenFinished: true; timeScale: 0">
</a-entity>
</a-scene>
</div>
<script>
document.getElementById('forward').addEventListener('click', function () {
const box = document.querySelector("#movingBox");
const mixerComponent = box.components['animation-mixer'];
const action = mixerComponent.mixer.clipAction(mixerComponent.data.clip);
if (action.time === 0) {
action.reset();
action.timeScale = 1;
action.play();
}
});
document.getElementById('backward').addEventListener('click', function () {
const box = document.querySelector("#movingBox");
const mixerComponent = box.components['animation-mixer'];
const action = mixerComponent.mixer.clipAction(mixerComponent.data.clip);
if (action.time === action.getClip().duration) {
action.paused = false;
action.timeScale = -1;
action.time = action.getClip().duration; // Set the animation time to its full duration before playing in reverse
action.play();
}
});
</script>
</body>
</html>There is probably a way to make a change in the animation-mixer component so we can If you want to attempt to make a change to the component, that would be great. |
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Hi there and thank you for your great work!
I tried to trigger a gltf animation and then reverse it. Triggering the animation works. But the backward direction doesn't work.
It seems, several people had this issue in the past (#364).
I've created a glitch demonstrating the problem: https://glitch.com/edit/#!/thoracic-typhoon-rest
You can click "forward" and it works just fine, "backward" doesn't work unfortunately. Or am I doing something wrong?
Thanks in advance and let me know if anything is missing to reproduce the issue.
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