Gary Herron <gher...@islandtraining.com> wrote:
> Well, your code still doesn't make sense, but the generic answers are:
I'll clarify what I need then:
I'm drawing Bézier curves. I draw them on a zone that is defined as a
subclass of GtkDrawingArea.
In a zone, I define a system of coordinates by 4 values: xmin, xmax,
ymin, and ymax that define the viewing port.
A curve is defined in this system of coordinates by a collection of
points.
So my way of coding it is the following:
class zone(GtkDrawingArea):
class systemOfCoordinates:
self.xmin = -5
self.xmax = 5
self.ymin = -5
self.ymax = 5
class Curve:
self.listOfPoints = ()
def draw(self):
pass
# for each point in self.listOfPoints: draw this point
# then draw the Bézier curve passing through these points
class Point:
def __init__(self, x, y):
(self.x, self.y) = (x, y)
def draw(self):
# ... code for drawing a dot in the system of coordinates...
def __init__(self): # for the zone object
self.coord = self.systemOfCoordinates()
self.listOfCurves = ( self.Curve() )
def expose(self, widget, event):
pass
# for each curve of self.listOfCurves: draw it
Now to actually draw the dot on the screen, I need to access
coord.xmin, coord.xmax, coord.ymin and coord.ymax to Point.draw(). I
could do this by passing a reference to Point.draw(), but I'd like to
do this implicitely.
I guess that in that case, xmin, xmax, ymin and ymax should be class variables
of zone, right?
> If *any* object, class or instance of a class (or module or whatever)
> contains another, access is by chaining the dots.
> OuterOb.InnerOb.attribute
>
> Hope that answers your question.
This should help, I'll make some tests.
Thanks.
--
F. Delente
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