From my experience, once started, you cannot dynamically change the parameters (such as from, to, duration) of an animation in such a way, without restarting the animation. Doing so simply has no effect on the already running animation.
In other words, the values are taken as an assignment at the point at which it's started and will not change until the animation is restarted. -Mark From: Interest [mailto:[email protected]] On Behalf Of Kristoffersen, Even (NO14) Sent: 14 July 2017 14:00 To: [email protected] Subject: Re: [Interest] Updating NumberAnimation from/to at runtime You can try to force binding with Qt.binding(). -Even From: Interest [mailto:[email protected]] On Behalf Of Shantanu Tushar Sent: 14. juli 2017 11:27 To: [email protected]<mailto:[email protected]> Subject: [Interest] Updating NumberAnimation from/to at runtime Hi, Consider the following code which draws two rectangles - a red rectangle which contains another blue rectangle. Rectangle { id: r1 anchors.centerIn: parent width: 300; height: 100 color: "red" Rectangle { id: r2 width: 100; height: 100 color: "blue" NumberAnimation on x { loops: Animation.Infinite from: 0; to: r1.width-r2.width duration: 1000 onToChanged: console.log(to) } } NumberAnimation on width { loops: Animation.Infinite from: 300; to: 100 duration: 10000 } } The blue rectangle is supposed to keep moving inside the red rectangle by means of a NumberAnimation. However, the width of the red rectangle changes according to another animation. I thought this will work fine and the blue rectangle will be confined to the red rectangle because of the following binding- to: r1.width-r2.width However, thats not what happens. The blue rectangle overflows the red rectangle, as if the binding never got updated. But, I can see that the `console.log(to)` does prove the binding is working. (Screenshot at http://i.imgur.com/yDTYbv9.png<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fi.imgur.com%2FyDTYbv9.png&data=02%7C01%7Ceven.kristoffersen%40honeywell.com%7C5b50a750b34e473ffd8708d4ca9a91e0%7C96ece5269c7d48b08daf8b93c90a5d18%7C0%7C0%7C636356212616706749&sdata=D17jHatSL1gf3XFPYQpAebB2e1H7T7nmzhLvi%2BPcB5g%3D&reserved=0> ) Is this a limitation of NumberAnimation? Or am I using it wrong? -- Shantanu Tushar (UTC +0530) shantanu.io<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fshantanu.io&data=02%7C01%7Ceven.kristoffersen%40honeywell.com%7C5b50a750b34e473ffd8708d4ca9a91e0%7C96ece5269c7d48b08daf8b93c90a5d18%7C0%7C0%7C636356212616706749&sdata=E80rwaltPVsx1m%2FToEC8aIY1%2F9fwpeFCfxrLlThOxTs%3D&reserved=0>
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