add cursor event listeners to canvas, not window

[ngokevin]

Description:

Cursor only cares about actual touch events.

This fixes an issue where vive-controls touchstart bubbled up to window and cursor was receiving them.

[wmurphyrd]

Another option would be to register those onMouseMove listeners on the canvas like the onCursorDown/Up listeners, as this would take them out of the bubble path of controllers and other scene elements.

I thought it was odd they were on the window the last time I was in there. Perhaps just an artifact of the merge from the previous mouse cursor component.

[ngokevin]

Thanks, better idea.

changed approach

[ngokevin]

Needs another review due to changing the solution.

[dmarcos]

The problem with this approach is that if you have an embedded scene that it's small on screen it won't be a good experience.

[dmarcos]

Oh sorry. looking at wrong file

[dmarcos]

Failing tests

[ngokevin]

Fixed. The embedded scene example works fine, same as before for me.