2016-03-07 16:24 GMT+01:00 Mário Luzeiro <[email protected]>:
> Hi Nick,
>
> Sorry I didn't get it clear, would you like to exemplify?
>
> But for clarification:
> - Currently, the intersection (when you press middle mouse or spacebar) will 
> be against the boundingbox of the board. The pivot point is 3D, it means that 
> it can be intersected on the top size.. or on the bottom.. or sides of the 
> board.
> So if you press in one side and keep it rotating, it will keep that position.

I would always expect the pivot point to be the point I selected on the pcb.

>
> - If you pan the board (i.e with cursor or with the mouse) it will keep the 
> pivot center, but the "trackball" (what you rotate when you press the mouse) 
> still is at the center of the full screen window.
> This is the same behavior as the current stable kicad.

This could be the reason for the "weird" behavior, because you will
suddenly get a lever arm from the center of the window and to the
board local point. This will make the pcb move a lot compared to how
much the cursor moves. Is this an artifact of a "beta" implementation
of the space select point on the pcb or is that a design decision?

>
> Mario
> ________________________________________
> From: Nick Østergaard [[email protected]]
> Sent: 07 March 2016 15:13
> To: easyw
> Cc: Mário Luzeiro; [email protected]
> Subject: Re: [Kicad-developers] Some new sweet features on the new 3D-Viewer
>
> Regarding pivot points, it seems to me that there is an other pivot
> point some place behind the pcb, which make rotating it sort of
> strange, at least after you have panned on the screen a bit. I see
> this be rotating a little by moving the cursor on the view, will
> perform an unnatural big and sort of unlinear rotation of the object.

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