About Image File Formats

The background image files used by some of the wireless models use an older format called Binary IMage (BIM) format, usually denoted by the .bim suffix. The format has one advantage for wireless models: it is not re-sizable. Because it maps pixel-for-pixel to the screen, sub-segments can be easily re-drawn when wireless "beams" are removed or nodes move. Refreshing sub-segments of large images is efficient and eliminates distracting flicker.

A better method is now to use PPM images with the fixed-size image draw routines. But the following are provided for backward compatibility to old models.


.