20/04/20 16:12:46 EsvxpnHB.net
>>181 Perl5 (Javaじゃなくてｽﾏｿ、ActivePerlなどのTkxﾓｼﾞｭｰﾙがｲﾝｽﾄｰﾙされている環境で実行ください)
use Tkx;
$top = Tkx::widget->new('.');
$c = $top->new_canvas(-width => 300, -height => 300);
$c->g_pack(-expand => 1);
($x0, $y0) = (150, 50);
$r = 200;
($v, $theta) = (0, 3.1415 * 40 / 180);
($x, $y);
$dt = 20;
sub show {
($x, $y) = ($x0 + $r * sin $theta, $y0 + $r * cos $theta);
$c->coords($st