协作音画《待你》

亚伦影音工作室 发表于 2023-7-29 15:08

本帖最后由亚伦影音工作室于 2023-10-13 13:15 编辑 <br /><br /><style>
#papa { margin: 190px-300px; width: 1164px; height: 640px; background: url('https://img-baofun.zhhainiao.com/pcwallpaper_ugc/static/a9903bbafba80f349d5c6f787021ab4d.jpg') no-repeat center/cover; box-shadow: 3px 3px 20px #000; position: relative; z-index: 1; display: grid; place-items: center;overflow: hidden;}
#prog { position: absolute; bottom: 5px; width: 300px; height: 12px; background: linear-gradient(to right, #ffffff var(--prg), #000000 0) repeat-x 0 50% / 100% 1px; color: #ffffff; display: grid; place-items: center; --prg: 0%; --state: paused; }
#prog::before, #prog::after { position: absolute; top: -30px; }
#prog::before { content: attr(data-cu); left: 0; }
#prog::after { right: 0; content: attr(data-du); }
#slider { position: absolute; font: normal 1.5em/-1em serif;color:#ffffff;cursor: pointer; left: var(--prg); }
#btnplay { position: absolute; top: -20px;font: normal 3.5em/0em serif;color:#ffffff;cursor: pointer; animation: rot 6s infinite linear var(--state); }
@keyframes rot { to { transform: rotate(1turn); } }
#dt{position: absolute;top:0%; left:0%;z-index: -2;
width:100%;mix-blend-mode: lighten;
height:100%; transition: .3s all ease;}
#lrc {
--state: paused;
--motion: cover2;
--tt: 2s;
--bg: linear-gradient(180deg, #880000, #880000);
position: absolute;
left: 50%;z-index: 20;
transform: translate(-50%);
top: 75%;
font:normal 3.5em 华文隶书;
color: #0000;
white-space: pre;
filter:drop-shadow(#FFFFFF 1px 0 0)drop-shadow(#FFFFFF 0 1px 0)drop-shadow(#FFFFFF -1px 0 0) drop-shadow(#FFFFFF 0 -1px0);
}
#lrc::before {
position: absolute;
content: attr(data-lrc);
width: 20%;
height: 100%;
color: transparent;
overflow: hidden;
white-space: pre;
background: var(--bg);
-webkit-background-clip: text;
animation: var(--motion) var(--tt) linear forwards;
animation-play-state: var(--state);
}
@keyframes cover1 { 0% { width: 100%;transform: rotateY(-100deg)rotatex(100deg);filter: hue-rotate(180deg)brightness(850%)}
20% { transform:rotateY(0deg) rotatex(0deg);filter: hue-rotate(0deg)brightness(350%) }
100% { transform: rotateY(0deg)rotatex(0deg);filter: hue-rotate(0deg)brightness(950%);width: 100%;}
}
@keyframes cover2 { 0% { width: 100%;transform: rotateY(-100deg)rotatex(100deg);filter: hue-rotate(180deg)brightness(850%)}
20% { transform:rotateY(0deg) rotatex(0deg);filter: hue-rotate(0deg)brightness(350%) }
100% { transform: rotateY(0deg)rotatex(0deg);filter: hue-rotate(0deg)brightness(950%);width: 100%;}
}
#papa:hover #fullscreen { display:block ;}
#fullscreen { position: absolute; top:5%; left:80%;color:#FFffff; filter:drop-shadow( 1px 1px 1px #000000);font: normal 3em华文隶书; opacity: 1; cursor: pointer; z-index: 1111}
</style>

<div id="papa">
<span id="fullscreen">全屏观赏</span>
<div id='dt'><img id="testImg" src="https://img.365.tf/file/2023/07/05/y087m8.gif" width="100%" height="100%"></div>
<div id="lrc" data-lrc="亚伦影音工作室">亚伦影音工作室</div>
<div id="prog" data-cu="00:00" data-du="00:00" title="调节进度">
   <span id="btnplay" title="播放/暂停">❊</span>
   <span id="slider">➽</span>
</div>
</div>
<audio id="aud" src="https://www.qqmc.com/mp3/music289010811.mp3" autoplay loop></audio>

<script>
(function() {
let toMin = (val) => { if (!val) return '00:00'; let min = parseInt(val / 60), sec = parseFloat(Math.floor(val) % 60); if(sec < 10) sec = '0' + sec; return min + ':' + sec; }
let mState = () => prog.style.setProperty('--state', aud.paused ? 'paused' : 'running');
aud.addEventListener('pause', mState, false);
aud.addEventListener('play', mState, false);
aud.addEventListener('timeupdate', () => { prog.style.setProperty('--prg', aud.currentTime / aud.duration * 100 + '%'); prog.dataset.cu = toMin(aud.currentTime); prog.dataset.du = toMin(aud.duration); });
btnplay.addEventListener('click', () => { aud.paused ?aud.play() : aud.pause(); });
prog.onclick = (e) => aud.currentTime = e.offsetX * aud.duration / prog.offsetWidth;
})();
(function() {
/*原始lrc歌词*/
let lrcStr = `
待你
作词：秦子文
作曲：秦子文
编曲：李德奎
演唱：安儿陈
和声：雪无影
混音：毅然音乐
统筹：秦子文
制作人：亚伦
监制：涓子
出品：亚伦影音工作室
代码合作：马黑，起个网名好难
待你了无牵挂
许我浪迹天涯
待你功成名达
许我花前月下
待你不再有她
许我淡饭粗茶
待你富贵荣华
许我十里桃花
遗憾余生尽芳华
未曾还我一个家
无奈人已似流水
东风暗渡年华
发端飘满了雪花
心乱如麻乱了家
原来君心非我心
终把那相思放下
待你了无牵挂
许我浪迹天涯
待你功成名达
许我花前月下
待你不再有她
许我淡饭粗茶
待你富贵荣华
许我十里桃花
遗憾余生尽芳华
未曾还我一个家
无奈人已似流水
东风暗渡年华
发端飘满了雪花
心乱如麻乱了家
原来君心非我心
终把那相思放下
遗憾余生尽芳华
未曾还我一个家
无奈人已似流水
东风暗渡年华
发端飘满了雪花
心乱如麻乱了家
原来君心非我心
终把那相思放下`;

/*变量：mKey - 当前歌词索引；mFlag ：调用关键帧动画索引；averAdd ：平均值补偿*/
let mKey = 0, mFlag = true, averAdd = 0.3;

/*函数：获取每句歌词用时，歌词用时若超过平均值则取平均值，最后一句歌词则取平均值*/
let lrcTime = (ar) => {
let tmpAr = [];
for(j = 0; j <ar.length - 1; j ++) {
if(j !== ar.length - 1) tmpAr = parseFloat((ar - ar).toFixed(1));
}
let aver = parseInt(tmpAr.reduce((a,b) => a + b) / (tmpAr.length - 1)) + averAdd;
tmpAr.push(aver);
tmpAr.forEach((item,key) => {
ar = item > aver ? aver : item;
});
return ar;
};

/*函数：从原始lrc歌词获取信息并存入 n*3 数组*/
let getLrcAr = (text) => {
let lrcAr = [];
let calcRule = ;
for(x of text.split('\n')) {
let ar = [];
let re = /\d+[\.:]\d+([\.:]\d+)?/g;
let geci = x.replace(re,'');
if(geci) {
geci = geci.replace(/[\[\]\'\"\t,]s?/g,'');
let time = x.match(re);
if(time != null) {
for(y of time) {
let tmp = y.match(/\d+/g);
let sec = 0;
for(z in tmp) sec += tmp * calcRule;
ar = ;
lrcAr.push(ar);
}
}
}
}
lrcAr.sort((a,b)=> a - b);
return(lrcTime(lrcAr));
};

/*函数：模拟显示同步歌词*/
let showLrc = (time) => {
let name = mFlag ? 'cover1' : 'cover2';
lrc.innerHTML = lrcAr;
lrc.dataset.lrc = lrcAr;
lrc.style.setProperty('--motion', name);
lrc.style.setProperty('--tt', time + 's');
lrc.style.setProperty('--state', 'running');
mKey += 1;
mFlag = !mFlag;
};

/*函数：处理当前歌词索引 mKey*/
let calcKey = () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime <= lrcAr) {
mKey = j - 1;
break;
}
}
if (mKey < 0) mKey = 0;
if (mKey > lrcAr.length - 1) mKey = lrcAr.length - 1;
let time = lrcAr - (aud.currentTime - lrcAr);
showLrc(time);
};

/*格式化时间信息*/
let toMin = (val) => {
if (!val) return '00:00';
val = Math.floor(val);
let min = parseInt(val / 60),
sec = parseFloat(val % 60);
if (min < 10) min = '0' + min;
if (sec < 10) sec = '0' + sec;
return min + ':' + sec;
}

/*函数：关键帧动画状态切换*/
let mState = () => aud.paused ? (lrc.style.setProperty('--state','paused'),btnplay.style.animationPlayState = 'paused') : (lrc.style.setProperty('--state','running'),btnplay.style.animationPlayState = 'running');

/*监听播放进度*/
aud.addEventListener('timeupdate', () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime >= lrcAr) {
cKey = j;
if (mKey === j) showLrc(lrcAr);
else continue;
}
}
});

aud.addEventListener('pause', () => mState());/*监听暂停事件*/
aud.addEventListener('play', () => mState());/*监听播放事件*/
aud.addEventListener('seeked', () => calcKey());/*监听查询事件*/
let lrcAr = getLrcAr(lrcStr); /*获得歌词数组*/
})();
let fs = true;
fullscreen.onclick = () => {
fs ? (fullscreen.innerText = '退出全屏', papa.requestFullscreen()) : (fullscreen.innerText = '全屏观赏', document.exitFullscreen());
fs = !fs;
};
</script>
<script>
if ('getContext' in document.createElement('canvas')) {
HTMLImageElement.prototype.play = function() {
   if (this.storeCanvas) {
         // 移除存储的canvas
         this.storeCanvas.parentElement.removeChild(this.storeCanvas);
         this.storeCanvas = null;
         // 透明度还原
         image.style.opacity = '';
   }
   if (this.storeUrl) {
         this.src = this.storeUrl;
   }
};
HTMLImageElement.prototype.stop = function() {
   var canvas = document.createElement('canvas');
   // 尺寸
   var width = this.width, height = this.height;
   if (width && height) {
         // 存储之前的地址
         if (!this.storeUrl) {
            this.storeUrl = this.src;
         }
         // canvas大小
         canvas.width = width;
         canvas.height = height;
         // 绘制图片帧（第一帧）
         canvas.getContext('2d').drawImage(this, 0, 0, width, height);
         // 重置当前图片
         try {
            this.src = canvas.toDataURL("image/gif");
         } catch(e) {
            // 跨域
            this.removeAttribute('src');
            // 载入canvas元素
            canvas.style.position = 'absolute';
            // 前面插入图片
            this.parentElement.insertBefore(canvas, this);
            // 隐藏原图
            this.style.opacity = '0';
            // 存储canvas
            this.storeCanvas = canvas;
         }
   }
};
}
var image = document.getElementById("testImg"),
button = document.getElementById("btnplay");

if (image && button) {
button.onclick = function() {
   if (this.value == '') {
      image.play();
         this.value = '.';
   } else {
         image.stop();
         this.value = '';
   }
};
}

</script>

起个网名好难 发表于 2023-7-29 15:58

本帖最后由起个网名好难于 2023-7-29 18:50 编辑 <br /><br />

亚伦影音工作室 发表于 2023-7-29 16:47

谢谢老师，我没有注意！！！

红影发表于 2023-7-29 17:04

这样探讨的帖子好，影子也不懂，跟在后面学习{:4_187:}

醉美水芙蓉 发表于 2023-7-29 17:57

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协作音画《待你》