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- October, 1986 AMIGAZINE!
-
-
- MacPaint Viewer Program
- MacView V1.01
- by Scott P. Evernden
- =======================
-
- MacView allows you to view a standard MacPaint picture file on your Amiga.
- You can look at the image in either of Amiga's low resolution (320 x 200
- pixels) or high resolution (640 x 400 pixels) modes. Because the Macintosh
- utilizes square pixels, only these 2 view modes are supported, since they
- result in the squarest pixels available on the Amiga. You can switch modes
- while the program is running.
-
- MacPaint images measure 576 x 720 pixels, so it is clearly not possible to
- look at the entire MacPainting at once. For this reason, MacView provides
- 1 (in hi-res) or 2 (in lo-res) thumbing bars to allow you to pan around in
- the larger MacPaint image.
-
- This program uses a fixed color palette of black on white to replicate the
- appearance of the Mac screen. Sorry, I provided no way to change this.
-
- In addition, MacView provides you with the ability to "snapshot" your
- current screen into an IFF paint file. IFF paint files are used by
- DeluxePaint, Aegis Images, and Graphicraft, and should be compatible with
- other and future Amiga paint programs. Once you have produced the IFF
- file(s), you can leave MacView, start up your favorite paint program, and
- load the image. At this point, you will have available the full range of
- your paint program's capabilities to alter the picture. Nothing could be
- simpler! The editors of AMIGAZINE! have provided you with a dummy icon
- which you can copy, and rename to match the name of your new hi-res IFF
- picture. This will let you view your new IFF version right away if the
- program SeeAll is in the root directory of the same disk. EmptyIFF is a
- dummy icon with no file associated with it.
-
- Using MacView
- =============
- MacView can be run from either the Workbench or CLI. From Workbench, simply
- open the MacView icon, and you will see an empty painting. You will need
- to use the PROJECT menu to indicate a file to be opened for viewing.
- Alternatively, from the workbench, you can open any of the MacPaint image
- files, and MacView will run displaying that file's contents. Use the latter
- method here.
-
- From CLI, simply incant "MacView filename" to get a hi-res screen of the Mac
- painting. The filename is optional. Also, from CLI, MacView will accept a
- number of "switches" to control its default operation. These can be listed
- by typing "MacView ?" for the switch list. Current switches support:
- starting up in low vs. hi res (-l or -h; hi-res (-h) is by default);
- control of whether MacView outputs compressed vs non-compressed IFF files
- (-c or -n; compress (-c) is the default).
-
- You can load new Mac files using the PROJECT menu; you also use this menu to
- output the IFF files to be subsequently loaded into your Amiga paint program.
-
- The VIEW MODES menu allows you to alternate between low and high resolution
- on-the-fly.
-
- General Notes
- =============
- This is an early version of this program. I welcome (nay, encourage)
- comments and criticisms in order to improve it in any way. Most of my
- testing has occurred under CLI, so please let me know if you experience any
- anomolies.
-
- I had little to go on in trying to figure out if a MacPaint file really came
- from MacPaint. I still do not know the format of the header except there
- appear to be two different formats. One (older?) format has a 512 byte
- header starting with a long 2; another format holds a 640 byte header, and
- contains the characters "PNTGMPNT" starting at the 65'th byte. If neither of
- these criteria is met, MacView will indicate that the file doesn't look like
- a MacPaint file. Both header formats also appear to contain the fill
- patterns, which this program makes no use of. If you know more, please let
- me know. This program should correctly operate on MacPaint files which have
- NOT been chopped due to XMODEM funnies, so start downloading by modem or
- transferring by null-modem at your convenience. Digital Creations, an Amiga
- developer in Sacramento, California, can supply you with Mac to Amiga
- software and/or a null-modem cable. You can call them at (916) 344-4825 and
- ask them about Digital Link. Check with your Amiga dealer first to see if
- they have something comparable in stock. Otherwise, a good terminal program
- will handle the job.
-
- When producing files for import into Aegis Images, you will need to name the
- IFF files with a ".pic" suffix (like "fish.pic"), since Images will only
- list and read paintings with this extension. Also, Images DOES NOT accept
- hi-res IFF at this time, so don't bother trying. If you use Graphicraft,
- then you will need to run MacView from CLI, and use the -n switch, since
- Graphicraft doesn't understand compressed IFF files. Graphicraft, like
- Images, also can't handle hi-res pictures.
-
- The MacView Program may be freely distributed and given away to anyone who
- can make use of it.
-
-
- All correspondence, suggestions, and donations can be directed to:
-
- Scott P. Evernden
- 9 Courtland St.
- Holliston, MA 01746
-