ugBASIC User Manual

   BLIT IMAGE i1, i2, ... AT [x], [y] WITH b
   BLIT IMAGE i1, i2, ... FRAME frame AT [x], [y] WITH b
   BLIT IMAGE i1, i2, ... STRIP s FRAME f AT [x], [y] WITH b

The “BLITTING” is a data operation used in computer graphics in which several bitmaps are combined into one using a boolean (or mathematical) function. The operation involves at least two bitmaps: a “source” (or “foreground”) and a “destination” (or “background”), and other fields, called “masks” or something like that. The result may be written to a final bitmap, though often it replaces the “destination” field.

To draw, the BLIT IMAGE(S) command will be used. The syntax of this command will be identical to that of PUT IMAGE (therefore with management of images and sequences), with two main differences. The first is the ability to indicate multiple images (separated from each other by a comma) and the second is to be able to indicate which blitting operation you want to use.

  BLIT IMAGE test AT 0, 0 WITH bop

See also the following example files:

• blit_basic_mask.bas

 BltIm

• Atari (400/800)
• Atari XL/XE
• Commodore 128 (MOS 8502)
• Commodore 128 (Zilog Z80)
• Commodore 64
• Commodore 64+REU
• TRS-80 Color Computer
• TRS-80 Color Computer 3
• ColecoVision
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• Thomson MO5
• Thomson MO5
• Olivetti Prodest PC128
• Commodore PLUS/4
• SEGA SC-3000
• SEGA SG-1000
• VG-5000
• Commodore VIC-20
• ZX Spectrum 48

BLIT (data type) BLIT (instruction)

If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!