This program can convert two-color (black/white) TIF images into BASIC programs that can be interpreted by an Apple II.

Compile the program:

cc -o tif2basic tif2basic.c

And run it with your image file:

./tif2basic funnycatpicture.tif

Most-strictly speaking, your image MUST be 280x192px. If it isn't cropped to this size (the size of an Apple II screen in graphics mode) it will probably be angry at you.

Otherwise, it's very nice to have your image in two colors: black and white. Using Adobe Photoshop CS4, this can be done with indexed colors.

Finally, save your TIF with no compression, order the pixels per-channel (RRGGBB, not RGBRGB), and save the file with a Macintosh byte order.

This program does not require a TIF. You may also input a .gray file generated by ImageMagick. To convert any almost any image file, do

convert yourimage.jpg -colorspace gray -resize 280x192 +repage -dither FloydSteinberg -colors 2 -depth 8 -gravity center -background black -extent 280x192 -threshold 50% -compress None yourimage.gray

and then use the image with ./tif2basic yourimage.gray.

This software is licensed under a modified MIT License. The stipulation I've added is that you have to send me an email telling me how you're using this program. :)

Copyright (c) 2015 Davis Remmel.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software, and the copyright holders shall be notified when this program is being modified or redistributed.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.