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MAC File Format

Short Name MAC
Long Name MacPaint
Typical File Extensions .mac
Contains Bitmap


This is the native format of the Apple Macintosh MacPaint application, but is fairly widely supported, especially in other Macintosh applications.

The format stores 720 by 576 pixel bitmap, compressed using the PackBits method.

Because the image size is fixed, larger images will be cropped if necessary, and small images expanded with whitespace.

As well as storing the bitmap picture, MacPaint files also contain thirty-eight 8 by 8 pixel fill patterns, which can be used in the MacPaint application for drawing. These fill patterns are generally ignored (or left blank), by other applications.

A technical discussion of this format can be found in Chapter 5 of Graphics File Formats by David C. Kay and John R. Levine.



Related Books:
  • Graphics File Formats
     
    Graphics File Formats
     
      
    By David C. Kay

    McGraw-Hill Companies
    Paperback (496 pages)

    Product Description:
    For software developers, systems managers, and computer hobbyists, this book will help bring a welcome sense of order to the chaotic world of graphics file format. David Kay and John Levine have compiled detailed specifications for 30 popular graphics file formats, so readers can more quickly and easily decide which standards are best for their applications.

    List Price: $29.95
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    (As of 05:49 Pacific 10 Oct 2008 More Info)

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