var WINDOW_WIDTH = 1024;
var WINDOW_HEIGHT = 768;
var RADIUS = 8;
var MARGIN_TOP = 60;
var MARGIN_LEFT = 30;

const endTime = new Date(2014,6,11,18,47,52);
var curShowTimeSeconds = 0

var balls = [];
const colors = ["#33B5E5","#0099CC","#AA66CC","#9933CC","#99CC00","#669900","#FFBB33","#FF8800","#FF4444","#CC0000"]

window.onload = function(){

??? WINDOW_WIDTH = document.body.clientWidth
??? WINDOW_HEIGHT = document.body.clientHeight

??? MARGIN_LEFT = Math.round(WINDOW_WIDTH /10);
??? RADIUS = Math.round(WINDOW_WIDTH * 4 / 5 / 108)-1

??? MARGIN_TOP = Math.round(WINDOW_HEIGHT /5);

??? var canvas = document.getElementById('canvas');
??? var context = canvas.getContext("2d");

??? canvas.width = WINDOW_WIDTH;
??? canvas.height = WINDOW_HEIGHT;

??? curShowTimeSeconds = getCurrentShowTimeSeconds()
??? setInterval(
??????? function(){
??????????? render( context );
??????????? update();
??????? }
??????? ,
??????? 50
??? );
}

function getCurrentShowTimeSeconds() {
??? var curTime = new Date();
??? var ret = endTime.getTime() - curTime.getTime();
??? ret = Math.round( ret/1000 )

??? return ret >= 0 ? ret : 0;
}

function update(){

??? var nextShowTimeSeconds = getCurrentShowTimeSeconds();

??? var nextHours = parseInt( nextShowTimeSeconds / 3600);
??? var nextMinutes = parseInt( (nextShowTimeSeconds - nextHours * 3600)/60 )
??? var nextSeconds = nextShowTimeSeconds % 60

??? var curHours = parseInt( curShowTimeSeconds / 3600);
??? var curMinutes = parseInt( (curShowTimeSeconds - curHours * 3600)/60 )
??? var curSeconds = curShowTimeSeconds % 60

??? if( nextSeconds != curSeconds ){
??????? if( parseInt(curHours/10) != parseInt(nextHours/10) ){
??????????? addBalls( MARGIN_LEFT + 0 , MARGIN_TOP , parseInt(curHours/10) );
??????? }
??????? if( parseInt(curHours%10) != parseInt(nextHours%10) ){
??????????? addBalls( MARGIN_LEFT + 15*(RADIUS+1) , MARGIN_TOP , parseInt(curHours/10) );
??????? }

??????? if( parseInt(curMinutes/10) != parseInt(nextMinutes/10) ){
??????????? addBalls( MARGIN_LEFT + 39*(RADIUS+1) , MARGIN_TOP , parseInt(curMinutes/10) );
??????? }
??????? if( parseInt(curMinutes%10) != parseInt(nextMinutes%10) ){
??????????? addBalls( MARGIN_LEFT + 54*(RADIUS+1) , MARGIN_TOP , parseInt(curMinutes%10) );
??????? }

??????? if( parseInt(curSeconds/10) != parseInt(nextSeconds/10) ){
??????????? addBalls( MARGIN_LEFT + 78*(RADIUS+1) , MARGIN_TOP , parseInt(curSeconds/10) );
??????? }
??????? if( parseInt(curSeconds%10) != parseInt(nextSeconds%10) ){
??????????? addBalls( MARGIN_LEFT + 93*(RADIUS+1) , MARGIN_TOP , parseInt(nextSeconds%10) );
??????? }

??????? curShowTimeSeconds = nextShowTimeSeconds;
??? }

??? updateBalls();

??? console.log( balls.length)
}

function updateBalls(){

??? for( var i = 0 ; i < balls.length ; i ++ ){

??????? balls[i].x += balls[i].vx;
??????? balls[i].y += balls[i].vy;
??????? balls[i].vy += balls[i].g;

??????? if( balls[i].y >= WINDOW_HEIGHT-RADIUS ){
??????????? balls[i].y = WINDOW_HEIGHT-RADIUS;
??????????? balls[i].vy = - balls[i].vy*0.75;
??????? }
??? }

??? var cnt = 0
??? for( var i = 0 ; i < balls.length ; i ++ )
??????? if( balls[i].x + RADIUS > 0 && balls[i].x -RADIUS < WINDOW_WIDTH )
??????????? balls[cnt++] = balls[i]

??? while( balls.length > cnt ){
??????? balls.pop();
??? }
}

function addBalls( x , y , num ){

??? for( var i = 0? ; i < digit[num].length ; i ++ )
??????? for( var j = 0? ; j < digit[num][i].length ; j ++ )
??????????? if( digit[num][i][j] == 1 ){
??????????????? var aBall = {
??????????????????? x:x+j*2*(RADIUS+1)+(RADIUS+1),
??????????????????? y:y+i*2*(RADIUS+1)+(RADIUS+1),
??????????????????? g:1.5+Math.random(),
??????????????????? vx:Math.pow( -1 , Math.ceil( Math.random()*1000 ) ) * 4,
??????????????????? vy:-5,
??????????????????? color: colors[ Math.floor( Math.random()*colors.length ) ]
??????????????? }

??????????????? balls.push( aBall )
??????????? }
}

function render( cxt ){

??? cxt.clearRect(0,0,WINDOW_WIDTH, WINDOW_HEIGHT);

??? var hours = parseInt( curShowTimeSeconds / 3600);
??? var minutes = parseInt( (curShowTimeSeconds - hours * 3600)/60 )
??? var seconds = curShowTimeSeconds % 60

??? renderDigit( MARGIN_LEFT , MARGIN_TOP , parseInt(hours/10) , cxt )
??? renderDigit( MARGIN_LEFT + 15*(RADIUS+1) , MARGIN_TOP , parseInt(hours%10) , cxt )
??? renderDigit( MARGIN_LEFT + 30*(RADIUS + 1) , MARGIN_TOP , 10 , cxt )
??? renderDigit( MARGIN_LEFT + 39*(RADIUS+1) , MARGIN_TOP , parseInt(minutes/10) , cxt);
??? renderDigit( MARGIN_LEFT + 54*(RADIUS+1) , MARGIN_TOP , parseInt(minutes%10) , cxt);
??? renderDigit( MARGIN_LEFT + 69*(RADIUS+1) , MARGIN_TOP , 10 , cxt);
??? renderDigit( MARGIN_LEFT + 78*(RADIUS+1) , MARGIN_TOP , parseInt(seconds/10) , cxt);
??? renderDigit( MARGIN_LEFT + 93*(RADIUS+1) , MARGIN_TOP , parseInt(seconds%10) , cxt);

??? for( var i = 0 ; i < balls.length ; i ++ ){
??????? cxt.fillStyle=balls[i].color;

??????? cxt.beginPath();
??????? cxt.arc( balls[i].x , balls[i].y , RADIUS , 0 , 2*Math.PI , true );
??????? cxt.closePath();

??????? cxt.fill();
??? }
}

function renderDigit( x , y , num , cxt ){

??? cxt.fillStyle = "rgb(0,102,153)";

??? for( var i = 0 ; i < digit[num].length ; i ++ )
??????? for(var j = 0 ; j < digit[num][i].length ; j ++ )
??????????? if( digit[num][i][j] == 1 ){
??????????????? cxt.beginPath();
??????????????? cxt.arc( x+j*2*(RADIUS+1)+(RADIUS+1) , y+i*2*(RADIUS+1)+(RADIUS+1) , RADIUS , 0 , 2*Math.PI )
??????????????? cxt.closePath()

??????????????? cxt.fill()
??????????? }
}