Dear Monks, I am fail to using 'sleep' inside MainLoop to animate a canvas object display on screen. Could somebody help me to solve it?
The code that i did as below:- 
#!/usr/bin/perl

use Tk;

$top=MainWindow->new();
$canvas=$top->Canvas(width=>300, height=>245)->pack();

$origin_x=110;
$origin_y=70;
$PI=3.141592635;
$circle_radius=5;
$path_radius=0;

for ($angle=0; $angle<=180; $path_radius+=7, $circle_radius+=3, $angle
++=10)
{
    $path_x=$origin_x+$path_radius*cos($angle*$PI/90);
    
    $path_y=$origin_y-$path_radius*sin($angle*$PI/90);
    
    $canvas->create('oval', $path_x-$circle_radius,
                    $path_y-$circle_radius,
                    $path_x+$circle_radius,
                    $path_y+$circle_radius,
                    -fill=>'yellow');
                    
    $canvas->create('line', $origin_x, $origin_y,
                    $path_x, $path_y,
                    -fill=>'slategray');
    
    sleep(1);                    
}
            
MainLoop();

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In reply to Animation Display appling Delay and Canvas Object by Alex Chew

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