Camera.flyTo doesn't work right after mophComplete

[hpinkos]

Reported on the forum: https://groups.google.com/forum/?hl=en#!topic/cesium-dev/aalnZv0HAaQ

If you morph to 3D when the example is loaded, the camera flight never gets executed. camera.flyTo is being called, but the animation must be getting removed somewhere. Adding a short setTimeout fixes the problem. (The user is trying to work around #2647)

var viewer = new Cesium.Viewer('cesiumContainer', {
    sceneMode: Cesium.SceneMode.SCENE2D
});

var scene = viewer.scene;
var camera = viewer.camera;

scene.morphComplete.addEventListener(function() {
    console.log('morph complete');
    camera.flyTo({
        destination : Cesium.Cartesian3.fromDegrees(-74.0, 41.0, 15000.0),
        complete: function() {
            console.log('flyto complete');
        },
        cancel: function() {
            console.log('flyto cancelled');
        }
    });
});

More info from the user:

With the default setting of completeMorphOnUserInput=true, clicking the map during the morph completes it and initiates the flyTo correctly even without the setTimeout.

[mramato]

In the provided code example, morphComplete will never be called because no morph is happening. Add scene.morphTo3D(); to the end and it will morph (and expose the bug). I'm guessing that we are firing morphComplete too early and doing something that clears the flight before the morph is completely finished.

[hpinkos]

I was morphing to 3D using the scene mode picker. Forgot to include that instruction, sorry

[mramato]

Oh, that makes total sense then 😄

[DustinPham]

@hpinkos Did you ever find a fix to this?

[hpinkos]

Hi @DustinPham, no sorry we haven't had a chance to look at this yet. I'll ping you when we do.

If you have time to look into it, we would be happy to review a pull request! Thanks!

[DustinPham]

@hpinkos Thanks for the quick response! I did find a workaround using setView instead of flyTo, but it doesn't look as nice.