iirc there was proposal to rename Rectangle to DisplayRectangle (or something like that), because you are certainly not the first one to run into such trouble.

P

On Tue, Jun 20, 2017 at 04:03:48PM -0700, Chris Cunningham wrote:
> Hi Trey,
> I can't find the rational written down why Rectangle was changed (although
> it WAS written down).�� If I remember right, the rational was roughly
> "Rectangles represent areas of the screen.�� As such, they should be 'well
> formed'- positive width and height only".
> In any case, going back through the archives, I found this bit of advice:
>
> "
> You need to use a different API: for example:
>
> frame := (0 @ 0 corner: 1.0 @ 1.0) asLayoutFrame topLeftOffset: 0 @ 50;
> bottomRightOffset: 0@50 negated.
> "
>
> Thanks,
> -cbc
>
> On Tue, Jun 20, 2017 at 3:10 PM, Trey Tomes <trey.tomes@gmail.com> wrote:
>
> > Hello!
> >
> > I'm new to this list, so I apologize if this topic has already been
> > considered.
> >
> > I have been re-creating the Laser Game tutorial in Pharo 6, and have
> > encountered something that may be an error within Pharo.
> >
> > The LayoutFrame has the ability to use negative values for the bottom and
> > right sides of the rectangle assigned to the offsets, e.g.
> >
> > LayoutFrame fraction: ((0@0 corner: (1@1)) offsets: ((4@4 corner: (-4@
> > -4)).
> >
> > This is useful, as it allows the system to automatically calculate the
> > margins inset from the bottom and right sides of the container.
> >
> > In Pharo 6, this does not work.�� The setLeft:right:top:bottom: and
> > setPoint:point: messages both use the min: and max: messages to rearrange
> > the Rectangle so that the smallest numbers get pushed to the top and left.
> >
> > In order to get things to render correctly in my system, I had to change
> > these messages to look like this:
> >
> > setLeft: left right: right top: top bottom: bottom
> >�� �� ��self setPoint: (left@top) point: (right@bottom).
> > setPoint: pt1 point: pt2
> >�� �� ��origin := pt1.
> >�� �� ��corner := pt2.
> >
> >
> > In place of this:
> >
> > setLeft: left right: right top: top bottom: bottom
> >�� �� ��origin := (left min: right) @ (top min: bottom).
> >�� �� ��corner := (left max: right) @ (top max: bottom).
> > setPoint: pt1 point: pt2
> >�� �� ��origin := (pt1 x min: pt2 x) @ (pt1 y min: pt2 y).
> >�� �� ��corner := (pt1 x max: pt2 x) @ (pt1 y max: pt2 y).
> >
> >
> > I haven't found any bad side-effects to changing this yet, but is there a
> > reason the Rectangle class was changed?
> >
> > Thanks,
> > Trey
> >