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HTML5中Canvas图像模糊的示例分析

2023-06-09 21:06:38 948人浏览 泡泡鱼
摘要

这篇文章给大家分享的是有关HTML5中canvas图像模糊的示例分析的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。最近在用h6的canvas画动画,发现图像特别模糊。后来终于找到罪魁祸首是<meta nam

这篇文章给大家分享的是有关HTML5canvas图像模糊的示例分析的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。

最近在用h6的canvas画动画,发现图像特别模糊。后来终于找到罪魁祸首是<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-Scalable=no" />这个代码,因为这行代码进行了伸缩

模糊图像的效果:

HTML5中Canvas图像模糊的示例分析 

将压缩去掉后的效果

HTML5中Canvas图像模糊的示例分析 

可以将代码改成

<!DOCTYPE html><html><head>    <meta charset="utf-8" />    <meta name="viewport" content="user-scalable=no" />    <title>赛事详细页</title>    <script src="js/rem.js" type="text/javascript" charset="utf-8"></script>    <link rel="stylesheet" type="text/CSS" href="css/m_reset.css" />    <link rel="stylesheet" type="text/css" href="css/gameListsNew.css" />    <link href="css/mask.css" rel="stylesheet" /></head><body>    <div class="tipMask">        <div class="tipBox">            <img src="img/faileTip.png" class="tipsImg" />            <div class="fileBtn">                <img src="img/fileBtn.png" />                <span class="tryAgain">再试一次</span>            </div>        </div>    </div>    <div>        <img src="img/whiteBack.png" class="titleImg" />        <div class="bgEvent" id="contentbody">            <div id="eventDetail" v-cloak>                <!--标题-->                <div class="detailevent">                    <div class="titlevs">                        <img class="teamFlagLoGo" onerror="nofind(this);" :src="'img/teamlogonew/'+eventDetail.HomeTeamID+'.png'" />                        <div class="countryName">                            {{eventDetail.HomeTeamName}}                        </div>                    </div>                    <div class="titlevs" style="padding-top:0.3rem ;">                        <div>                            <!--未开赛-->                            <!--<p class="theWorldCup">世界杯</p>-->                            <p class="theGameNowDataTime">{{eventDetail.TimeFORMat }}</p>                            <p class="gameBeginTime">{{getScoreOrVs(eventDetail.HomeTeamScore,eventDetail.AwayTeamScore)}}</p>                        </div>                        <!--开赛时长-->                        <!--<div>                            <p>73:40</p>                        </div>-->                    </div>                    <div class="titlevs">                        <img class="teamFlagLogo" onerror="nofind(this);"                             :src="'img/teamlogonew/'+eventDetail.AwayTeamID+'.png'" />                        <div class="countryName">                            {{eventDetail.AwayTeamName}}                        </div>                    </div>                </div>                <div id="ordersuccess" class="ordersuccess">                    <div style="text-align:right;padding-top:0.2rem;padding-left:0.2rem;">                        <img src="img/ordersuccess/close.png" style="width:0.45rem;height:0.45rem;" id="closesuccess" onclick="closesuccess();" />                    </div>                    <div class="teamname">                        <div class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.HomeTeamName}}</p><br /><p class="teamnameitembottom">HOME</p></div>                        <div class="teamnameitem "><p class="teamnameitemmiddle">VS</p></div>                        <div class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.AwayTeamName}}</p><br /><p class="teamnameitembottom">AWAY</p></div>                    </div>                    <div class="teamdetail">                        <div class="teamdate"><span>{{eventDetail.CompetitionName}}</span><span>/</span><span>{{eventDetail.DateFormat}}</span></div>                        <div class="teamplaysselection">                            <table style="width:100%;text-align:left;height:100%;">                                <tr>                                    <td class="teamplaysselectiontop" style="width:50%;">玩法</td>                                    <td class="teamplaysselectiontop" style="width:50%;">选项</td>                                </tr>                                <tr>                                    <td class="teamplaysselectionbottom" style="width:50%;" id="rulename">Match Odds</td>                                    <td class="teamplaysselectionbottom" style="width:50%;" id="selectionname">Home</td>                                </tr>                            </table>                        </div>                        <div class="teamwinmoney">                            <table style="width:90%;text-align:left;height:100%;">                                <tr>                                    <td class="teamwinmoneytop" style="width:50%;">                                        本金                                    </td>                                    <td class="teamwinmoneytop" style="width:50%;">                                        赔率                                    </td>                                    <td class="teamwinmoneytop" style="width:50%;">                                        预赢                                    </td>                                </tr>                                <tr>                                    <td class="teamwinmoneybottom" style="width:50%;" id="betmoneysuc">1000</td>                                    <td class="teamwinmoneybottom" style="width:50%;" id="betodds">12.54</td>                                    <td class="teamwinmoneybottom" style="width:50%;" id="betwin">12540</td>                                </tr>                            </table>                        </div>                    </div>                </div>            </div>            <div>                <div class="square" id="square">                    <canvas id="courtCaseNew" width="980" height="765"></canvas>                </div>                <img src="img/balllittle.png" style="width:20px;height:20px;display:none;" id="imgballNew" />            </div>            <div class="middlechat">                <div class="middleitem" id="jcc">                    <p class="tabActive">竞猜场</p>                </div>                <div class="middleitem" id="jcjl">                    <p class="tabCommon">竞猜记录</p>                </div>                <div class="middleitem" id="sssj">                    <p class="tabCommon">赛事事件</p>                </div>                <div class="middleitem" id="jstj">                    <p class="tabCommon">技术统计</p>                </div>            </div>            <div class="downChangrTab quizGames" style="display: block;">                <div id="ruleTypeItems" v-cloak>                    <!--胜平负-->                    <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==100">                        <span class="speciesName">赛果</span>                        <span class="rotary" v-if="item.State!=1">(已封盘)</span>                        <span class="speciesExp">猜90分钟(含补时)两队的比赛结果</span>                    </div>                    <div v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==100" id="result" name="selectionItems" class="result">                        <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'resutitemGray commonBorderGray':'resutitem commonBorder']" v-for="(select,index) in item.Selection"                             v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'赛果',select.SelectionName);" name="itemSelection">                            <p class="winEquLose" v-bind:name="'item'+item.MarketId">{{select.SelectionName}}</p>                            <p class="winEquLoseOdds " v-bind:name="'item'+item.MarketId">                                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>                                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />                                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />                            </p>                        </div>                    </div>                    <!--单双-->                    <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130">                        <span class="speciesName">单双</span>                        <span class="rotary" v-if="item.State!=1">(已封盘)</span>                        <span class="speciesExp">猜90分钟(含补时)比赛总进球的单双</span>                    </div>                    <div id="oddeven" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130" name="selectionItems" class="oddeven">                        <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'oddevenitemGray commonBorderGray':'oddevenitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'单双',select.SelectionName)" name="itemSelection">                            <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>                            <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">                                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>                                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />                                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />                            </p>                        </div>                    </div>                    <!--总进球-->                    <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==410">                        <span class="speciesName">总进球 </span>                        <span class="rotary" v-if="item.State!=1">(已封盘)</span>                        <span class="speciesExp">猜90分钟(含补时)比赛总进球的数 </span>                    </div>                    <div id="totalGoals" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==410" name="selectionItems" class="totalGoals">                        <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'totalGoalitemGray commonBorderGray':'totalGoalitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'总进球',select.SelectionName)" name="itemSelection">                            <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>                            <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">                                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>                                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />                                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />                            </p>                        </div>                    </div>                    <!--全场比分-->                    <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140">                        <span class="speciesName">全场比分</span>                        <span class="rotary" v-if="item.State!=1">(已封盘)</span>                        <span class="speciesExp">猜90分钟(含补时)全场比分</span>                    </div>                    <div id="correctScoreHome" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140" name="selectionItems" class="correctScoreHomeAway">                        <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'correctScoreitemGray commonBorderGray':'correctScoreitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'全场比分',select.SelectionName)" name="itemSelection">                            <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>                            <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">                                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>                                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />                                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />                            </p>                        </div>                    </div>                    <div class="downImg" onclick="clickImg()">                        <img src="img/toDown.png" />                    </div>                    <!--下一进球-->                    <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==350">                        <span class="speciesName">下一进球</span>                        <span class="rotary" v-if="item.State!=1">(已封盘)</span>                        <span class="speciesExp">猜90分钟(含补时)下一进球的球队</span>                    </div>                    <div id="nextgoal" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==350" name="selectionItems" class="result">                        <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'resutitemGray commonBorderGray':'resutitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'下一进球',select.SelectionName)" name="itemSelection">                            <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>                            <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">                                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>                                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />                                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />                            </p>                        </div>                        <div class="" style="width: 100%;height:0.45rem;"></div>                    </div>                    <div class="perchDiv" style="width: 100%;height:3rem;"></div>                </div>            </div>            <!--竞猜记录-->            <div class="downChangrTab guessRecord">                <div class="hide-body" id="dialogorders">                    <div class="tableNameGuess">                        <li>玩法</li>                        <li>选项</li>                        <li>赔率</li>                        <li>本金</li>                        <li>结果</li>                    </div>                    <ul style="background:#FFFFFF;height:4.79rem;overflow: scroll;">                        <div class="guessedLists" id="contentOrders" v-for="(item,index) in orders">                            <li>                                {{item.MarketName}}                            </li>                            <li>                                {{item.SelectionName}}                            </li>                            <li>                                {{item.FillPrice}}                            </li>                            <li>                                {{item.FillAmount}}                            </li>                            <li>                                <p v-if="item.Status == '0'"> 待确认</p>                                <p v-else-if="item.Status == '1'">订单正常</p>                                <p v-else-if="item.Status == '2'">{{item.netReturn}}</p>                                <p v-else-if="item.Status == '3'">订单已被取消</p>                                <p v-else-if="item.Status == '4'">订单无效</p>                                <p v-else="item.Status == '5'">订单被拒绝,投注延迟期间发生重要事件等原因</p>                            </li>                        </div>                    </ul>                </div>            </div>            <!--赛事事件-->            <div class="downChangrTab" style="display: none;" v-if="">                <div class="login-body" id="contentCases">                    <table class="whatHappen" v-if="cases.length >0">                        <tr>                            <td></td>                            <td class="happenedMiddle">                                <div class="happenedMiddle_top" style="margin-top: 0.4rem;"></div>                            </td>                            <td></td>                        </tr>                    </table>                    <table class="whatHappen" style="" v-for="(item,index) in cases" border="0" cellspacing="0" cellpadding="0">                        <tr>                            <td></td>                            <td class="happenedMiddle">                                <div class="happenedMiddle_line"></div>                            </td>                            <td></td>                        </tr>                        <tr v-if="item.CaseDescription.indexOf('主')>-1">                            <td class="eventsHappendLeft_things">                                <div class="eventsText">                                    <p class="eventsTextLeft_time">{{item.CaseMinutes}}'</p>                                    <p class="eventsTextLeft_Country">{{item.CaseDescription}}</p>                                </div>                            </td>                            <td class="happenedMiddle">                                <div class="eventsHappend_img">                                    <img :src="GetMatchEventImg(item.CaseDescription)" />                                </div>                            </td>                            <td></td>                        </tr>                        <tr v-if="item.CaseDescription.indexOf('客')>-1">                            <td></td>                            <td class="happenedMiddle">                                <div class="eventsHappend_img">                                    <img :src="GetMatchEventImg(item.CaseDescription)" />                                </div>                            </td>                            <td class="eventsHappendRight_things">                                <div class="eventsText">                                    <p class="eventsTextRight_Country">{{item.CaseDescription}}</p>                                    <p class="eventsTextRight_time">{{item.CaseMinutes}}'</p>                                </div>                            </td>                        </tr>                        <tr v-if="item.CaseDescription.indexOf('主')<0 && item.CaseDescription.indexOf('主')<0">                            <td></td>                            <td>                                <a class="ti tlefoc">{{item.CaseMinutes}}'</a>                                <a class="titlefoc">{{item.DesChina}}</a>                            </td>                            <td></td>                        </tr>                    </table>                    <table class="whatHappen" v-if="cases.length >0">                        <tr>                            <td></td>                            <td class="happenedMiddle">                                <div class="happenedMiddle_line"></div>                                <div class="happenedMiddle_top"></div>                            </td>                            <td></td>                        </tr>                    </table>                    <!--<div style="width: 100%; height: 2.7rem;"></div>-->                </div>            </div>            <!--技术统计-->            <div class="downChangrTab" style="display: none;">                <div class="skillInfoGaryBg" id="stutsskillsData">                    <div class="skillInfo" v-for="(item, index) in skillsData">                        <li class="shotsOnTargets">                            <div class="shotsOnTargets_left">                                <p class="skillsTextFonts">{{item.AwayTeamValue}}</p>                                <div class="sotl_bg">                                    <div class="sotl_bgProgress"></div>                                </div>                            </div>                            <div class="shotsOnTargets_middle">                                <img :src="GetMatchStatsImage(item.StatsType)" />                                <p class="shills_name">{{item.StatsType}}</p>                            </div>                            <div class="shotsOnTargets_right">                                <p class="skillsTextFonts">{{item.HomeTeamValue}}</p>                                <div class="sotl_bg">                                    <div class="sotl_bgProgress"></div>                                </div>                            </div>                        </li>                    </div>                </div>            </div>        </div>        <!--底部下单-->        <div class="buttomOrder">            <!--金额输入-->            <!--竞猜金额-->            <div class="aboutMoney">                <input type="text" name="" id="betmoney" class="guSSMoney" value="竞猜金额" placeholder="" readonly="readonly" v-model="gussMoney" />                <img src="img/clearBetMoney.png" class="clearGussMoney" id="clearGussMoney" />                <!--余额-->                <span class="balanceMoney" id="minemoney">我的余额:888</span>                <!--下注金额-->                <div class="diffGussMoney" style="text-align:center;">                    <ul>                        <li name="bettingmoney" class="difGuMonCom" val="100">+100</li>                        <li name="bettingmoney" class="difGuMonCom" val="500">+500</li>                        <li name="bettingmoney" class="difGuMonCom" val="1000">+1000</li>                        <li class="difGuMonCom" id="allin" style="line-height: 0.5rem;">                            <p style="height: 0.3rem;">All <span style="margin-left: 0.05rem;">in</span></p>                            <p id="allinvalue" style="height: 0.3rem;">100</p>                        </li>                    </ul>                </div>                <!--确定-->                <p class="subSure subSureRed" style="text-align:center;" onclick="CreateOrder();" id="subSure">                    确定                </p>            </div>        </div>        <!--下单成功后遮罩层-->        <div id="overlay" class="overlay"></div>    </div>    <div>        <img src="img/goal/goalball.png" />        <img src="img/goal/goal.png" />        <img src="img/goal/fireworks.png" />    </div>    <script src="js/Jquery-1.10.2.min.js" type="text/javascript" charset="utf-8"></script>    <script src="js/Vue.min.js" type="text/javascript" charset="utf-8"></script>    <script src="js/common.js?ver=012902" type="text/javascript" charset="utf-8"></script>    <script src="js/jquery.cookie.min.js"></script>    <script src="js/mask.js?ver=012901"></script>    <script type="text/javascript" src="js/eventDetailsNew.js?ver=012908"></script>    <script src="../js/animation.js"></script></body></html>

感谢各位的阅读!关于“HTML5中Canvas图像模糊的示例分析”这篇文章就分享到这里了,希望以上内容可以对大家有一定的帮助,让大家可以学到更多知识,如果觉得文章不错,可以把它分享出去让更多的人看到吧!

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本文标题: HTML5中Canvas图像模糊的示例分析

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