- A bitmap is rectangular array of zeros and ones
- A pixmap is rectangular array of small integers
- The data structure representing a bitmap contains
- A pointer to the first word of the array (assume 32 bit words)
- A rectangular subset of bits (the bitmap itself)
- A integer width equal to the number of bits in a row of the array
- Bitmap graphics refers to the use of bitmap or pixmaps
as the basic primitive to display images
- Bitmap graphics are heavily used in some animation systems
for sprites, missiles and bullets
- Basic operation for bitmapped graphics is a bitblt
(bit block-transfer)
- Following Pike, we show how to implement a bitblt that support
clipping to a rectangle, arbitrary write modes, and texturing
The Bit Block Transfer Code
Florida Tech Computer Science
William D. Shoaff
Comments to author:wds@cs.fit.edu
All contents copyright ©, William D. Shoaff
Revised: Thu Sep 26 15:30:24 EST 1996