Re: Question about something in Hudak's book

13 Mar 2002

      At 12:33 13/03/2002 +1300, Tom Pledger wrote:
...
Ludovic Kuty writes:
:
| Is it an idiom or some sort of optimization ?
It's more to do with the particular algorithm for finding the area of
a convex polygon.  Try working through the calculation of the area of
this kite.
Polygon [(0, 0), (1, 0), (2, 2), (0, 1)]
I think the two versions of the area function will give different
results, and that this will highlight the reason for v1 being matched
separately.
That's right.

My version is wrong because i forget to take into account
the "interior" surface of the polygon.
The bigger the polygon, the bigger the difference.

Thanks.

Ludovic Kuty