TWINKLE(6) — Silicon Graphics

NAME

twinkle − twinkle stars on the screen

SYNOPSIS

/usr/games/twinkle [-+[s save]] [density1] [density2]

DESCRIPTION

Twinkle causes a specified density of ‘stars’ to twinkle on the screen. The following options are available:

− print out the present screen density (the percentage of the screen that will be filled with stars) in the lower left hand corner of the screen. This number will change as stars go on and off.

+ do not ‘randomize’ before starting. The screen starts out completely blank and stars are added, bit by bit. In this case the density rises beyond the specified density, then falls to the required percentage.

s save binary density on file ‘save’, in case you want to see the density curve that a particular density specification produced during the life of the show.

density
If no density is specified, density is .5 (50% of the screen will be filled with stars).
If only density1 is given, density is 1/density1
If both density1 and density2 are given, density is the resultant of density1/density1+density2.

EXAMPLE

twinkle -+ 2 6

would start from a blank screen and twinkle stars to a final density of 2/8, or 25%. The densities would be shown in the lower left hand corner, as a three-place decimal.

AUTHOR

Kurt Shoens