<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>大转盘抽奖</title>
<style type="text/css">
body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div{margin:0;padding:0;border:0;}
body{color:#333; font-size:12px;font-family:"Microsoft YaHei"}
ul,ol{list-style-type:none;}
select,input,img,select{vertical-align:middle;}
input{ font-size:12px;}
a{ text-decoration:none; color:#000;}
a:hover{color:#c00; text-decoration:none;}
.clear{clear:both;}
/* 大转盘样式 */
.banner{display:block;width:95%;margin-left:auto;margin-right:auto;margin-bottom: 20px;}
.banner .turnplate{display:block;width:100%;position:relative;}
.banner .turnplate canvas.item{width:100%;}
.banner .turnplate img.pointer{position:absolute;width:28%;left:36%;top:29%;}
.more{display: block;width: 100%;position: fixed;top: 0;left: 0;height: 150px;}
.cloud{position: fixed;left: 0;top: 70%;width: 150px;}
.cloud2{position: fixed;right: 0;top: 32%;width: 50px;}
.cloud3{position: fixed;left: 0;top: 30%;width: 100px;}
@media screen and (max-width: 320px) {
.cloud{position: fixed;left: 0;top: 70%;width: 150px;}
.cloud2{position: fixed;right: 0;top: 30%;width: 50px;}
.cloud3{position: fixed;left: 0;top: 23%;width: 100px;}
}
@media screen and (min-width: 321px) and (max-width: 375px) {
.cloud{position: fixed;left: 0;top: 72%;width: 150px;}
.cloud2{position: fixed;right: 0;top: 32%;width: 50px;}
.cloud3{position: fixed;left: 0;top: 25%;width: 100px;}
}
@media screen and (min-width: 376px) {
.cloud{position: fixed;left: 0;top: 68%;width: 150px;}
.cloud2{position: fixed;right: 0;top: 32%;width: 50px;}
.cloud3{position: fixed;left: 0;top: 25%;width: 100px;}
}
@media screen and (max-height: 480px) {
.cloud{position: fixed;left: 0;top: 81%;width: 150px;}
.cloud2{position: fixed;right: 0;top: 35%;width: 50px;}
.cloud3{position: fixed;left: 0;top: 27%;width: 100px;}
}
#mark{width: 100%;height: 100%;background: rgba(0,0,0,0.5);position: fixed;top: 0;left: 0;display: none;}
.red-img{position: fixed;top: 10%;left: 5%;width: 90%;}
</style>
<script type="text/javascript" src="/static/web/dial/js/jquery-1.10.2.js"></script>
<script type="text/javascript" src="/static/web/dial/js/awardRotate.js"></script>
<script type="text/javascript" src="/static/web/layer/layer.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:184, //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:50, //大转盘内圆的半径
startAngle:0, //开始角度
bRotate:false //false:停止;ture:旋转
};
$(document).ready(function(){
//动态添加大转盘的奖品与奖品区域背景颜色
// turnplate.restaraunts = ["优惠券10元", "谢谢参与", "优惠券20元", "优惠券50元", "金币120", "金币300","a", "b", "c", "d"];
// turnplate.colors = ["#FFFFFF","#5fcbd5", "#FFFFFF", "#5fcbd5", "#FFFFFF","#5fcbd5","#FFFFFF","#5fcbd5", "#FFFFFF", "#5fcbd5"];
turnplate.restaraunts = eval({$restaraunts});//奖品内容
turnplate.colors = eval({$color});//奖品颜色
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){
// 应该旋转的角度，旋转插件角度参数是角度制。
var baseAngle = 360 / turnplate.restaraunts.length;
// 旋转角度 == 270°（当前第一个角度和指针位置的偏移量） + （奖品的位置 * 每块所占的角度 - 每块所占的角度的一半(指针指向区域的中间)）
angles = 270 + ((item * baseAngle) - baseAngle / 2); // 因为第一个奖品是从0°开始的，即水平向右方向
$('#wheelcanvas').stopRotate();
$('#wheelcanvas').rotate({
angle:0,
animateTo:angles+360*5,
duration:8000,
callback:function (){ //回调
layer.msg(txt);
setTimeout(function () {
location.reload();
}, 2000);
}
});
};
//开始抽奖
$(".pointer").one("click",function(){
if(turnplate.bRotate)return;
turnplate.bRotate = !turnplate.bRotate;//开始旋转
var item = 0;//获取随机数(奖品个数范围内)
$.ajax({
url : '{:url("interfaces/draw/rand_ss")}',
type: "POST",
data:{"num":turnplate.restaraunts.length,'user_id':"{:input('user_id')}"},
dataType:'json',
success:function(data){
console.log(data);
if (data['status'] == 'y') {
item = data['rand'];
title = data['title'];
rotateFn(item, title);
} else {
layer.msg(data['title']);
setTimeout(function () {
location.reload();
}, 2000);
}
}
});
});
});
//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 = "#FFFFFF";
//font 属性设置或返回画布上文本内容的当前字体属性
ctx.font = 'bold 10px 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();
//改变画布文字颜色
var b = i+2;
if(b%2){
ctx.fillStyle = "#E5302F";
}else{
ctx.fillStyle = "#E5302F";
};
//----绘制奖品开始----
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) **/
ctx.fillText(text, -ctx.measureText(text).width / 2, 70);
//添加对应图标
var img= document.getElementById("diy-img-" + i);
img.onload=function(){
ctx.drawImage(img,-35,-30);
};
ctx.drawImage(img,-35,-30);
//把当前画布返回（调整）到上一个save()状态之前
ctx.restore();
//----绘制奖品结束----
}
}
};
</script>
</head>
<body bgcolor="#fff" style="text-align: center;position: relative;max-width: 720px;padding-top: 20%;">
<img src="/static/web/dial/images/bg.png" style="display: block;width: 100%;position: absolute;top:0;left:0;">
{volist name="cover" id="image"}
<img src="/{$image}" id="diy-img-{$i - 1}" style="display:none;width: 72px;height: 72px;" />
{/volist}
<div class="banner" style="width: 90%;margin: 0 auto 0;">
<div class="turnplate" style="background-image:url(/static/web/dial/images/bg1.png);background-size:100% 100%;">
<canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
<img class="pointer" src="/static/web/dial/images/jt2.png"/>
</div>
</div>
<div style="text-align:center;margin:50px 0; color:white;font:normal 18px/30px '宋体';position: relative;z-index: 2;">
<p>抽奖一次消耗10积分<span style="color: #FFCA29;margin: 0 10px;" id="times"></span></p>
</div>
</body>
</html>
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