var WINDOW_WIDTH = 1024;
var WINDOW_HEIGHT = 768;
var RADIUS = 8;
var MARGIN_TOP = 60;
var MARGIN_LEFT = 30;
const endTime = new Date(2018, 3, 28, 22, 47, 52);
var curShowTimeSeconds = 0;
var balls = [];
var colors = ["#FFCC00", "#FFCC00", "#CC0033", "#990066", "#990066", "#009966", "#339999", "#669999", "#663366", "#CCCC00", "#99CC00", "#FF3399", "#99CC00", "#990033", "#999900", "#009966"];
window.onload = function () {
var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");
canvas.width = WINDOW_WIDTH;
canvas.height = WINDOW_HEIGHT;
curShowTimeSeconds = getCurShowTimeSeconds();
setInterval(function () {
render(context);
update();
}, 50)
}
function getCurShowTimeSeconds() {
var curTime = new Date();
var ret = endTime.getTime() - curTime.getTime();
ret = Math.round(ret / 1000);
return ret >= 0 ? ret : 0;
console.log("getCurShowTimeSeconds")
}
function update() {
var nextShowTimeSeconds = getCurShowTimeSeconds();
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(nextHours / 10) != parseInt(curHours / 10)) {
addBalls(MARGIN_LEFT + 0, MARGIN_TOP, parseInt(curHours / 10));
}
if (parseInt(nextHours % 10) != parseInt(curHours % 10)) {
addBalls(MARGIN_LEFT + 15 * (RADIUS + 1), MARGIN_TOP, parseInt(curHours % 10));
}
if (parseInt(nextMinutes / 10) != parseInt(curMinutes / 10)) {
addBalls(MARGIN_LEFT + 39 * (RADIUS + 1), MARGIN_TOP, parseInt(curMinutes / 10));
}
if (parseInt(nextMinutes % 10) != parseInt(curMinutes % 10)) {
addBalls(MARGIN_LEFT + 54 * (RADIUS + 1), MARGIN_TOP, parseInt(curMinutes % 10));
}
if (parseInt(nextSeconds / 10) != parseInt(curSeconds / 10)) {
addBalls(MARGIN_LEFT + 78 * (RADIUS + 1), MARGIN_TOP, parseInt(curSeconds / 10));
}
if (parseInt(nextSeconds % 10) != parseInt(curSeconds % 10)) {
addBalls(MARGIN_LEFT + 93 * (RADIUS + 1), MARGIN_TOP, parseInt(nextSeconds % 10));
}
curShowTimeSeconds = nextShowTimeSeconds;
}
updateBalls();
console.log("update")
}
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;
}
}
console.log("updateBalls")
}
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);
}
}
console.log(balls)
}
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;
if (hours > 78) {
alert("请配置未来三天以内的任意时间")
} else {
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 = "gold";
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();
}
}
}
}