onPointerMissed click location

[bralax]

I currently have a use case where I want to add an object to the scene when a user clicks somewhere where there are no meshes present. I know I can use the Canvas's onPointerMissed to get notified when a user clicks on the canvas but it doesn't hit a mesh but the event here is a standard DomEvent so how can I determine the position within the scene to insert the object?