检查好几遍还不知道为什么不能自动刷新数字，只能手动刷新。
检查好几遍还不知道为什么不能自动刷新数字，只能手动刷新。
var WINDOW_WIDTH = 1024;
var WINDOW_HEIGHT = 768;
var RADIUS = 8;
var MARGIN_TOP = 60;
var MARGIN_LEFT = 30;
const endTime = new Date(2015,6,8,21,47,52);
var curShowTimeSeconds = 0
var balls=[];
const colors =["#33B5E5","#0099CC","#AA66CC","#9933CC","#99CC00","#669900","#FFBB33","#FF8800","#FF4444","#CC0000"]
window.onload = function(){
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 nextshowtimes=getCurrentShowTimeSeconds();
var nexth=parseInt(nextshowtimes/3600);
var nextm=parseInt((nextshowtimes - nexth*3600)/60)
var nexts=nextshowtimes%60
var curh=parseInt(curShowTimeSeconds/3600);
var curm=parseInt((currentShowTimeSeconds - curh*3600)/60)
var curs=curShowTimeSeconds%60
if(nexts!=curs){
if(parseInt(curh/10)!=parseInt(nexth/10)){
addballs(MARGIN_LEFT+0,MARGIN_TOP,parseInt(curh/10));
}
if(parseInt(curh%10)!=parseInt(nexth%10)){
addballs(MARGIN_LEFT+15*(RADIUS+1),MARGIN_TOP,parseInt(curh/10));
}
if(parseInt(curm/10)!=parseInt(nextm/10)){
addballs(MARGIN_LEFT+39*(RADIUS+1),MARGIN_TOP,parseInt(curm/10));
}
if(parseInt(curm%10)!=parseInt(nextm%10)){
addballs(MARGIN_LEFT+54*(RADIUS+1),MARGIN_TOP,parseInt(curm%10));
}
if(parseInt(curs/10)!=parseInt(nexts/10)){
addballs(MARGIN_LEFT+78*(RADIUS+1),MARGIN_TOP,parseInt(curs/10));
}
if(parseInt(curs%10)!=parseInt(nexts%10)){
addballs(MARGIN_LEFT+93*(RADIUS+1),MARGIN_TOP,parseInt(nexts%10));
}
curShowTimeSeconds=nextshowtimes;
}
updateballs();
}
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;
}
}
}
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()
}
}
