Re: Drawing from lower left, why?
Re: Drawing from lower left, why?
- Subject: Re: Drawing from lower left, why?
- From: Chris Hanson <email@hidden>
- Date: Fri, 15 Jun 2007 16:00:59 -0700
On Jun 15, 2007, at 3:34 PM, Ken Tozier wrote:
Why did Apple subject us to this bass-ackwards way of drawing? The
natural way to read information (at least 90+ percent of the time)
is from top to bottom I just don't understand their logic and it
makes drawing a living hell.
The Cartesian plane puts positive coordinates above and to the right
of the origin (0, 0). The PostScript imaging model - from which most
modern affine transform-based imaging architectures are derived -
adopted this so no additional transforms would be necessary to
translate between the mathematical representation of an image and
what's used programmatically.
If you think of your drawing in terms of mathematics rather than in
terms of reading and writing European languages, then a lower-left
origin makes a lot more sense.
-- Chris
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