mouseMagnify angle

[daniel]

I want to use mouseMagnify for a component with no fixed aspect ratio.

Is there a way to get the angle of the pinch gesture for mouseMagnify?

Our usecase is a waveform viewer, and I want to allow horizontal and vertical pinch gestures, but it seems it’s not possible with only one scalar…

EDIT: I found this related thread:

Trackpad orientation/rotation?

I’ve implemented mouseMagnify so users can pinch to zoom in our audio plugin’s graph. What I was hoping I could do was use the orientation field of the MouseEvent (or rotation?) to determine of the pinch or spreading of the user’s fingers was primarily horizontal, vertical, or more in between. Unfortunately, on my MacBook Pro, that information does not seem to be available. The function isOrientationValid() returns true, but the value is always 0. (Same for rotation.) Is this information simply …

I’ll keep digging

EDIT 2: I’ll continue in Howard’s thread