blob: 1e74e7e5d1100523e32f6b9820eca46de3d18254 (
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proc sinusoid {a b {c 1.0}} {
set mylist {}
for {set t 0} {$t < [expr int(50.0 * $c)]} {incr t} {
set x [expr int($b * $t / 50.0)]
set y [expr int($a * sin(2 * 3.1415926 * $t / 50.0))]
lappend mylist [list $x $y]
}
set handle [eval polygon make [llength $mylist] $mylist]
refresh
return $handle
}
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