Well, upon closer examination, I find many uses of Point in point.py that I
don't know how to fix. I think my Python knowledge isn't quite there yet.
It appears many of the functions are intended be called off the class
rather than an instance, such as Point.is_collinear(p1, p2, p3, p4)
def is_collinear(*points):
.....
points = [Point(a) for a in points]
and, I'm not sure what to replace Point with in these cases.
Duane
On Saturday, December 6, 2014 4:17:15 PM UTC-6, Duane Nykamp wrote:
>
> The Point class, for numerous functions, such as .evalf, returns a hard
> coded Point class. This means that for a derived class, these functions
> end up returning the original Point class not the derived class. I assume
> there must be a way to code it differently so these functions return the
> derived class. For now, I'm just overriding the functions, like .evalf,
> that I need to use so that they return my derived class.
>
> Should the calls to Point be changed to self.__class__ or is there a
> different way one is supposed to accomplish this in Python? If it is as
> simple as that, I could make the change and submit a pull request.
>
> (I'm creating a derived class to get rid of the call to nsimplify, as
> functions like doit() and bottom up get rid of the evaluate=False flag.
> nsimplify is quite slow. Each call to nsimplify for something like
> Point(3.23423545235,6.345436534630) takes on the order of 100 ms. My
> webserver slowed to a crawl with 140 students repeatedly hitting "Submit"
> multiple times to check answers with a problem that had less than 10 Points
> in it. Even with no load, the server takes over a second to grade the
> question and spit back the results.)
>
> Thanks,
> Duane
>
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