//?JavaScript?Document
var?window_width=1024;
var?window_height=768;
var?radius=8;
var?margin_left=60;
var?margin_top=30;
const?endTime=new?Date(2017,5,15,18,47,52);
var?curShowTimeSeconds=0;
var?balls=[];
const?colors=["#33b5e5","#0099cc","aa66cc","#9933cc","#99cc00","#ffbb33","#ffbb33","#ffbb33","#ff8800","#ff4444","#cc00000"];
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?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(curMinutes/10)){
???addBalls(margin_left+39*(radius+1),margin_top,parseInt(curMinutes/10));
}
if(parseInt(curMinutes%10)!=?parseInt(curMinutes%10)){
???addBalls(margin_left+54*(radius+1),margin_top,parseInt(curMinutes%10));
}
if(parseInt(curSeconds/10)!=?parseInt(curSeconds/10)){
???addBalls(margin_left+39*(radius+1),margin_top,parseInt(curSeconds/10));
}
if(parseInt(curSeconds%10)!=?parseInt(curSeconds%10)){
???addBalls(margin_left+54*(radius+1),margin_top,parseInt(curSeconds%10));
}
????curShowTimeSeconds=nextShowTimeSeconds;
}
updateBalls();
}
function?updateBalls(){
????for(var?i=0;i<balls.length;i++){
???balls[i].x?+=balls[i].vx;
???balls[i].y?+=balls[i].yx;
???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(){
???????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();
??}
???}
}
}
控制臺(tái)沒(méi)報(bào)錯(cuò)，沒(méi)有小球效果，只有倒計(jì)時(shí)，怎么回事？
qq_果汁分ni半_03462240
2017-06-14 22:38:20
