[chimerax-users] Trackpad scaling causes unintended rotation

[Tom Goddard]

Hi Oli,

  Four finger drag up and down zooms.  That gives a zoom without any rotation and may be what you want.  Two finger drag rotates, and 3-finger drag translates.

	Tom


> On Sep 29, 2021, at 12:42 PM, Oliver Clarke via ChimeraX-users <chimerax-users at cgl.ucsf.edu> wrote:
> 
> Hi,
> 
> In recent versions of ChimeraX (I don't think it always did this but can't be 100% sure), when one uses pinch-to-zoom on the trackpad to scale the view, this also changes orientation, causing quite a large and unintended rotation which can be a bit disconcerting. Comparing directly with Chimera using the same model, this does not happen in Chimera. 
> 
> Is there some difference in how the Chimera vs X are interpreting competing trackpad gestures, and could this be adjusted in ChimeraX? Because two fingers can be used both to scale and rotate... Chimera seems to be able to figure out which the user is intending, while ChimeraX presently applies both at the same time.
> 
> Cheers
> Oli
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