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Re: Subject: WYSIWIG drawing vs printing (was drawing scaled lines)
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Re: Subject: WYSIWIG drawing vs printing (was drawing scaled lines)


  • Subject: Re: Subject: WYSIWIG drawing vs printing (was drawing scaled lines)
  • From: Henry McGilton <email@hidden>
  • Date: Fri, 7 Jan 2005 16:31:58 -0800


On Jan 7, 2005, at 3:39 PM, John Stiles wrote:

That's nice from a computer-science perspective, but if you want to draw something on-screen that's an actual inch, it's not helpful information. You need to scale things to match the monitor DPI. This should be as simple as a transformation matrix with a scale factor in it—which, of course, you wouldn't apply when printing.

I am genuinely baffled as to what you would achieve by drawing a 'real' centimetre, inch, barleycorn, or whatever, on the screen.

Can you give a real-world example of why you would do such a thing?
And what would you do with it once you had the feature?

I've stayed out of this discussion so far, but every time this
recurring discussion about screen sizes and pixels per furlong
crop up, I keep having this uneasy feeling that I am obviously
missing some very important point.

Having a device-independent imaging model is not just some nice
computer-science theoretical exercise.   PostScript and Display
PostScript and their Quartz descendents did and still do confer
huge advantages from the perspective of both end-users and
software developers.   Having to be concerned about device
characteristics is a huge drain of energy for all concerned.

    Best Wishes,
		........  Henry

===============================+============================
  Henry McGilton, Boulevardier |    Trilithon Software
   Objective-C/Java Composer   |     Seroia Research
-------------------------------+----------------------------
  mailto:email@hidden   |   http://www.trilithon.com
                               |
===============================+============================


===============================+============================ Henry McGilton, Boulevardier | Trilithon Software Objective-C/Java Composer | Seroia Research -------------------------------+---------------------------- mailto:email@hidden | http://www.trilithon.com | ===============================+============================ _______________________________________________ Do not post admin requests to the list. They will be ignored. Cocoa-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
  • Follow-Ups:
    • Re: Subject: WYSIWIG drawing vs printing (was drawing scaled lines)
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References: 
 >Subject: WYSIWIG drawing vs printing (was drawing scaled lines) (From: "Erik M. Buck" <email@hidden>)
 >Re: Subject: WYSIWIG drawing vs printing (was drawing scaled lines) (From: John Stiles <email@hidden>)

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