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.

Inizia con l’esempio di grafico di superficie 3D all’indirizzo https://plotly.com/javascript/3d-surface-plots/ e riproduci entrambi i comportamenti usando il listener plotly_relayout fornito. Confronta gli eventi di trascinamento touch e di zoom con la rotellina del mouse con la panoramica e la rotazione, esaminando _fullLayout.scene.camera dell’elemento. Il lavoro è completato quando il trascinamento touch attiva plotly_relayout e lo zoom con la rotellina riporta il vettore della fotocamera corrente.