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.

Beginne mit dem Beispiel für 3D-Oberflächenplots unter https://plotly.com/javascript/3d-surface-plots/ und reproduziere beide Verhaltensweisen mithilfe des bereitgestellten plotly_relayout-Listeners. Vergleiche Touch-Drag-Ereignisse und Mouse-Scroll-Zoom mit Schwenken und Rotieren, indem du _fullLayout.scene.camera des Elements untersuchst. Als abgeschlossen gilt die Aufgabe, wenn Touch-Drag plotly_relayout auslöst und Scroll-Zoom den aktuellen Kameravektor meldet.