matplotlib-devel Mailing List for matplotlib

I uploaded a version of the documentation to MatplotlibAsHtmlHelp I made some changes and tried to explain why on the projects Wiki. Again thank you for all the help..
Gary
 
      
MatplotlibAsHtmlHelp
MatPlotLib documentation as Html Help 
View on sourceforge.net Preview by Yahoo 

I do see a clear-cut difference. A Patch is a two-dimensional region
characterized by a boundary and an interior region, which may have colors,
line/hatch styles, etc. Also, a Patch has an algorithms to compute an area,
a circumference, decide whether a point lies inside or outside the Patch, to
cut a Patch for visibility calculations, etc.
A Polygon is a special case of a Patch, namely one that is bounded by
piecewise-linear segments. This implies specific formulae/algorithms to
compute the properties mentioned above.
Now, it is entirely meaningful to realize a Patch differently than in terms
of piecewise-linear segments. I could use piecewise cubic segments
(splines), or give the control points of a closed Bezier curve. All the
properties of a Patch are still meaningful, but none of the algorithms for a
Polygon apply.
Hence I find it meaningful to define
class Polygon(Patch)
such that I am not precluded to define
class SplinePatch(Patch)
class BezierPatch(Patch)
etc.
Hence I prefer to have Patch as an Abstract Base Class and not as a specific
implementation of a Polygon.
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/Polygon-vs-Patch-tp43743p43748.html
Sent from the matplotlib - devel mailing list archive at Nabble.com.

Since Polygon subclasses Patch, wouldn't that mean that a Polygon could be
made out of splines or Bezier curves? I fail to see the "inherent barrier"
for Polygons and Patches to be the same thing. I am not claiming that they
are identical now, I just don't see why a Polygon's functionality needs to
be in a subclass of Patch rather than in Patch itself.
On Mon, Aug 4, 2014 at 2:34 AM, Stefan H. <shm...@gm...> wrote:
> No, a Patch is not automatically a Polygon. You could make a Patch out of
> splines or Bezier curves, for example.
>
> Cheers,
> Stefan
>
>
>
> --
> View this message in context:
> http://matplotlib.1069221.n5.nabble.com/Polygon-vs-Patch-tp43743p43746.html
> Sent from the matplotlib - devel mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
> Infragistics Professional
> Build stunning WinForms apps today!
> Reboot your WinForms applications with our WinForms controls.
> Build a bridge from your legacy apps to the future.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>

No, a Patch is not automatically a Polygon. You could make a Patch out of
splines or Bezier curves, for example.
Cheers,
Stefan
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/Polygon-vs-Patch-tp43743p43746.html
Sent from the matplotlib - devel mailing list archive at Nabble.com.