[Javascript] Find Color of Pixel Under Cursor

[Tim Makins]

If you go to this page..

http://www.mapability.com/grids/ir/ir_demo.html

you will see a small demo of what I call 'overlay mapping'. If you turn on
the 'Relief' overlay, you'll see a relief or elevation map - each different
band of heights is indicated by a different color. It occurred to me that if
I could detect what color the cursor was presently on top of, I could
indicate in a form box elsewhere on the page the approximate height.

HTH,

Tim in Ireland.




----- Original Message -----
From: "Peter Brunone" <peter at brunone.com>
To: "[JavaScript List]" <javascript at LaTech.edu>
Sent: 04 August 2003 20:32
Subject: Re: [Javascript] Find Color of Pixel Under Cursor


> Tim,
>
>    What's your ultimate goal here?  I don't know of anything that will
grab the color under the pointer, but maybe we can circumlocute with some
more information.
>
> Cheers,
>
> Peter
>
> ---------- Original Message ----------------------------------
> From: "Tim Makins" <spindrift at oceanfree.net>
>
> >Hi all - I wonder if there is any way to import into a variable the color
of
> >the pixel that the cursor is currently on top of ??
> >
> >Tim in Ireland.
>
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