html5 canvas line falling animation
html5 canvas line falling animation
代码片段：
function draw(){
var i;
ctx.clearRect(0,0,c.width,c.height);
for (i = 0; i < n; i++){
ctx.fillStyle = lines[i].color;
ctx.fillRect(lines[i].x, lines[i].y, lines[i].width, lines[i].height);
lines[i].y += lines[i].speed;
if (lines[i].y > c.height)
lines[i].y = 0 - lines[i].height;
}
requestAnimationFrame(draw);
}
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