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PsL Monthly 1993 December
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PSL Monthly Shareware CD-ROM (December 1993).iso
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palette.bas
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Encoding:
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Macintosh JP
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RISC OS/Acorn
UTF-8
Wrap
QuickBASIC Tokenized Source
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1989-12-04
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1.8 KB
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26 lines
InitPalette
ChangePalette
DrawEllipses
PaletteArray
ASPECT
ColorVal
Radius
640 x 200 resolution; 16 colors
Shift palette until key pressed
InitPalette
= InitPalette
This procedure initializes the integer array used to
change the palette.
ChangePalette
= ChangePalette
This procedure rotates the palette by one each time it=
is called. For example, after the first call toi
ChangePalette, PaletteArray(1) = 2, PaletteArray(2) = 3,
. . . , PaletteArray(14) = 15, and PaletteArray(15) = 1
Shift the color displayed by each of the attributes from=
one to fifteen:
DrawEllipses
= DrawEllipses
This procedure draws fifteen concentric ellipses, and
paints the interior of each with a different color.