OpenEuphoria

Re: Shrinking bitmaps

• Posted by "C. K. Lester" <cklester at yahoo.com> Feb 04, 2002
• 517 views

Now now, jiri! Play nice! You may be a clever (some may say brilliant) coder
(others may say hacker), but don't be a meanie-head! You want to set a good
example for the youth... :)

> Graeme is good at sarcasm:
>
> >>I just did a quick speed test expanding a 64x64 bitmap to twice its
size,
> > >and my *unoptimized* routine seems to be almost 4 times faster than
> yours.
> >
> > Was it? I'll remember that next time I'm resizing a postage stamp.
>
> Innocently I thought a 128x128 bitmap was a more practical example than
> 6400x4800, roughly the size of Australian ego.
>
>
> This time Graeme is in really good form:
>
> > The thing that has escaped your casual inspection is the way the return
> > bitmap is built. Your routine uses a sequence the size of the target
> bitmap.
>
> In line 7 of my resize function the return sequence is clearly initialized
> as a column just one integer  wide. It does not take exceptional
analytical
> skills to see that. Or does it?
>
> Enough.
>
> jiri