3D surface plotly_relayout does not trigger with touch drag. Scroll zoom reports older camera vector.

This is probably similar to https://github.com/plotly/plotly.js/issues/134
The plotly_relayout do trigger with mouse drag correctly.
However, this is not the case for touch drag.

To reproduce the problem please try open
https://plotly.com/javascript/3d-surface-plots/
and execute
document.getElementById("myDiv_1").on('plotly_relayout',()=>{console.log("relayout")});
you can see that the console doesn’t log when using touch emulator.

I also tested with https://cdn.plot.ly/plotly-latest. The problem is still reproducible.

Another problem is mouse scroll zoom. The plotly report older camera vector. After subscribe to plotly_relayout, please then do mouse scroll zoom and execute

Plotly.relayout(document.getElementById("myDiv_1"), document.getElementById("myDiv_1")._fullLayout.scene.camera );

You will notice this the camera position is not always current. This is not problem when pan (right click drag) or rotate view.

Commencez par l’exemple de tracé de surface 3D à l’adresse https://plotly.com/javascript/3d-surface-plots/ et reproduisez les deux comportements à l’aide du listener plotly_relayout fourni. Comparez les événements de glissement tactile et de zoom avec la molette de la souris avec le déplacement et la rotation, en inspectant _fullLayout.scene.camera de l’élément. C’est terminé lorsque le glissement tactile déclenche plotly_relayout et que le zoom avec la molette signale le vecteur de caméra actuel.