[Blindmath] graphics

[Richard Baldwin]

Be aware that the 96 pixels per inch standard only applies if the monitor
is being run at maximum resolution as determined by the Windows display
settings.

Dick Baldwin

On Sun, Feb 12, 2012 at 10:48 AM, Haden Pike <haden.pike at gmail.com> wrote:

> I have to agree.  This is something I can definitely work with.  I know my
> Professor isn't expecting an artistic masterpiece to be turned in
> (especially for me), so I think I'll be forgiven if my sizes are a bit off
> the mark.
>
> Thanks all for the responses!
> Haden
>
>
> On 2/11/2012 9:33 PM, Ben Humphreys wrote:
>
>> 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@**
>>> nfbnet.org <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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>>
>>
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>
>
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-- 
Richard G. Baldwin (Dick Baldwin)
Home of Baldwin's on-line Java Tutorials
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Professor of Computer Information Technology
Austin Community College
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