[Blindmath] graphics

[Ben Humphreys]

Joe,

What a great answer.  Kudos!

Ben

At 08:15 PM 2/11/2012, Joseph Drenth wro
>Hello Haden,
>
>If you don't have a specific monitor and resolution to use for measuring a
>graphic, a general conversion factor in Windows programming is 96 pixels per
>inch. For instance, for the old CRT monitors that had a viewing area
>measured diagonally as 13 and a third inches, this conversion ratio would
>yield a resolution of 1024 by 768, which was a common resolution for a
>monitor of that size.
>
>Using this standard display resolution, just multiply a pixel measurement by
>the fraction with numerator 1 inch and the denominator 96 pixels. This means
>that your example graphic of 100 by 150 pixels would be a little over an
>inch by a little over an inch and a half.
>
>Best regards.
>
>
>-----Original Message-----
>From: blindmath-bounces at nfbnet.org [mailto:blindmath-bounces at nfbnet.org] On
>Behalf Of Haden Pike
>Sent: Saturday, February 11, 2012 3:48 PM
>To: blindmath at nfbnet.org
>Subject: [Blindmath] graphics
>
>Hi all,
>
>This might be off topic for this list, but figured I'd ask here in case
>there's a mathematical formula for figuring out what I need.
>
>Anyway, as part of my intro to programming class, we are being asked to draw
>graphics on the screen in order to learn about objects.  I already know
>about them, but this class is required for Computer science majors, so I
>still have to do the assignment.  My question is this.  Is there any way a
>blind person can hope to get a since of what size something is, when
>specified in pixels?  For example, if I gave a rectangle a width of 100
>pixels and a height of 150 pixels, how could I determine what size the
>rectangle will be on the screen.
>
>Thanks for any help,
>Haden
>
>
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