[Cuis] [Ann] Cuis 4.1 is released

[Chris Muller]

Extremely impressive Juan.  Congratulations.  Morphic3 is something
that sounds worth breaking backward-compatibility in Squeak if it
would ever possible to run there.

On Mon, Dec 17, 2012 at 12:36 PM,  <juan at jvuletich.org> wrote:
> Quoting Chris Muller <ma.chris.m at gmail.com>:
>
>>> The idea is that location (position, angle, scale, and/or whatever
>>> specification of how a Morph is placed in its owner) should be completely
>>> separated from attributes such as extent. Any morph needs a location. But
>>> not all morphs need an extent. For example, a polyline, or Bezier path
>>> would
>>> be specified by corners or control points. Not by extent. In addition,
>>> the
>>
>>
>> That makes sense.  But isn't a rectangular extent still useful for
>> quick identification of damaged areas, e.g., to support efficient
>> redraw?
>>
>
> That´s a problem for the Morphic machinery, not a problem for Morphs and
> their programmers. Somebody coding her morphs only needs to care about
> appareance and behavior. Not about low level problems such as damaged areas.
>
> The underlying machinery (World, Canvases, Hand, etc) need to know about
> damaged areas and such. These are usually in Display coordinates, not in
> Morph coordinates. (Remember that the objective is to build a ZUI). Even
> there, a rectangle (aligned with Display or surface edges) is not the only
> alternative... Apple´s QuickDraw used regions for this in 1982!
>
> Squeak´s Morphic merges all this at a single level. The initial design is
> simpler, but to support rotation and scaling (via TransformMorphs and
> WarpBlt), one consequence is terrible visual quality, because drawing is
> done in fake coordinates, and it´s bitmaps that are scaled, not drawing
> operations. In addition, these fake coordinates don´t really make much
> sense, and the resulting object mashups are very hard to inspect and debug.
>
> Fixing this mess is one of the central objectives of Cuis and Morphic 3.
>
>
> Cheers,
> Juan Vuletich
>
>
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