pt-start-guide-time1.html

<script type="text/javascript">
    // Previous code omitted  ...
    
    bot = {
        animate: function( time, fs, context ) {
            
            form.fill( "#999" )
            form.text( new Point( 20, 20 ), "frame rate is "+(1000/fs) )
    
            form.fill( "#5AF" ).stroke( false )
            dot.setRadius( Math.abs(500 - time % 1000)/20 + 20 )
            form.circle( dot )
            
        }
    } 
    
    // Previous code omitted  ...
</script>