<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery手机移动端幸运大转盘抽奖代码</title>
<link href="css/zzsc.css" rel="stylesheet" type="text/css">
<style>
.container{
margin: 0 auto;
}
.content{
position: absolute;
width: 100%;
height: auto;
margin: 0px auto;
margin-top: 58%;
}
</style>
</head>
<body>
<img src="images/game-bg.jpg" alt="" style="position: absolute;width: 100%;height: 100%;">
<div class="content" style="margin-top: 58%;">
<img src="images/8.png" id="fen-img" style="display:none;" />
<img src="images/6.png" id="zuliao-img" style="display:none;" />
<img src="images/3.png" id="baowen-img" style="display:none;" />
<img src="images/5.png" id="yundou-img" style="display:none;" />
<img src="images/7.png" id="ganlan-img" style="display:none;" />
<img src="images/4.png" id="yusan-img" style="display:none;" />
<div class="banner">
<div class="turnplate" style="background-image:url(images/turnplate-bg.png);background-size:100% 100%;">
<canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
<img class="pointer" src="images/turnplate-pointer.png">
</div>
</div>
</div>
<div id="sbtn">
<a href="#"><img src="images/btn-rule.png" alt=""></a>
<a href="#"><img src="images/btn-zjcx.png" alt=""></a>
</div>
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/awardRotate.js"></script>
<script type="text/javascript">
var turnplate={
restaraunts:[], //大转盘奖品名称
colors:[], //大转盘奖品区块对应背景颜色
outsideRadius:192, //大转盘外圆的半径
textRadius:155, //大转盘奖品位置距离圆心的距离
insideRadius:68, //大转盘内圆的半径
startAngle:0, //开始角度
bRotate:false //false:停止;ture:旋转
};
$(document).ready(function(){
//动态添加大转盘的奖品与奖品区域背景颜色
turnplate.restaraunts = ["20积分", "足疗机", "20积分", "保温杯", "20积分", "手持式电熨斗", "20积分 ", "橄榄油", "20积分", "晴雨伞"];
turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF"];
var rotateTimeOut = function (){
$('#wheelcanvas').rotate({
angle:0,
animateTo:2160,
duration:8000,
callback:function (){
alert('网络超时,请检查您的网络设置!');
}
});
};
//旋转转盘 item:奖品位置; txt:提示语;
var rotateFn = function (item, txt){
var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length*2));
if(angles<270){
angles = 270 - angles;
}else{
angles = 360 - angles + 270;
}
$('#wheelcanvas').stopRotate();
$('#wheelcanvas').rotate({
angle:0,
animateTo:angles+1800,
duration:8000,
callback:function (){
//中奖提示
alert(txt);
turnplate.bRotate = !turnplate.bRotate;
}
});
};
$('.pointer').click(function (){
if(turnplate.bRotate)return;
turnplate.bRotate = !turnplate.bRotate;
//获取随机数(奖品个数范围内)
var item = rnd(1,turnplate.restaraunts.length);
//奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288]
rotateFn(item, turnplate.restaraunts[item-1]);
// switch (item) {
// case 1:
// rotateFn(252, turnplate.restaraunts[0]);
// break;
// case 2:
// rotateFn(216, turnplate.restaraunts[1]);
// break;
// case 3:
// rotateFn(180, turnplate.restaraunts[2]);
// break;
// case 4:
// rotateFn(144, turnplate.restaraunts[3]);
// break;
// case 5:
// rotateFn(108, turnplate.restaraunts[4]);
// break;
// case 6:
// rotateFn(72, turnplate.restaraunts[5]);
// break;
// case 7:
// rotateFn(36, turnplate.restaraunts[6]);
// break;
// case 8:
// rotateFn(360, turnplate.restaraunts[7]);
// break;
// case 9:
// rotateFn(324, turnplate.restaraunts[8]);
// break;
// case 10:
// rotateFn(288, turnplate.restaraunts[9]);
// break;
// }
console.log(item);
});
});
function rnd(n, m){
n=1;//最小随机数
m=100;//最大随机数(概率范围最大值)
//最大数数不超过最大随机数
var ransluck = [50,60,65,70,75,80,85,90,95,100];//概率为比自己小的第一个数之间的差
var randoms = Math.floor(Math.random()*(m-n+1)+n);
if(randoms<=ransluck[0])
{
var random = 1;
}
else if(randoms<=ransluck[1])
{
var random = 2;
}
else if(randoms<=ransluck[2])
{
var random = 3;
}
else if(randoms<=ransluck[3])
{
var random = 4;
}
else if(randoms<=ransluck[4])
{
var random = 5;
}
else if(randoms<=ransluck[5])
{
var random = 6;
}
else if(randoms<=ransluck[6])
{
var random = 7;
}
else if(randoms<=ransluck[7])
{
var random = 8;
}
else if(randoms<=ransluck[8])
{
var random = 9;
}
else if(randoms<=ransluck[9])
{
var random = 10;
}
//alert(randoms);
//alert(random);
return random;
}
//页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染
window.onload=function(){
drawRouletteWheel();
};
function drawRouletteWheel() {
var canvas = document.getElementById("wheelcanvas");
if (canvas.getContext) {
//根据奖品个数计算圆周角度
var arc = Math.PI / (turnplate.restaraunts.length/2);
var ctx = canvas.getContext("2d");
//在给定矩形内清空一个矩形
ctx.clearRect(0,0,422,422);
//strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式
ctx.strokeStyle = "#FFBE04";
//font 属性设置或返回画布上文本内容的当前字体属性
ctx.font = '16px Microsoft YaHei';
for(var i = 0; i < turnplate.restaraunts.length; i++) {
var angle = turnplate.startAngle + i * arc;
ctx.fillStyle = turnplate.colors[i];
ctx.beginPath();
//arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线(用于创建圆或部分圆)
ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);
ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true);
ctx.stroke();
ctx.fill();
//锁画布(为了保存之前的画布状态)
ctx.save();
//----绘制奖品开始----
ctx.fillStyle = "#E5302F";
var text = turnplate.restaraunts[i];
var line_height = 17;
//translate方法重新映射画布上的 (0,0) 位置
ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius);
//rotate方法旋转当前的绘图
ctx.rotate(angle + arc / 2 + Math.PI / 2);
/** 下面代码根据奖品类型、奖品名称长度渲染不同效果,如字体、颜色、图片效果。(具体根据实际情况改变) **/
if(text.indexOf("M")>0){//流量包
var texts = text.split("M");
for(var j = 0; j<texts.length; j++){
ctx.font = j == 0?'bold 20px Microsoft YaHei':'16px Microsoft YaHei';
if(j == 0){
ctx.fillText(texts[j]+"M", -ctx.measureText(texts[j]+"M").width / 2, j * line_height);
}else{
ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
}
}
}else if(text.indexOf("M") == -1 && text.length>6){//奖品名称长度超过一定范围
text = text.substring(0,6)+"||"+text.substring(6);
var texts = text.split("||");
for(var j = 0; j<texts.length; j++){
ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
}
}else{