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老姚日记--随心记录,胡乱折腾!

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Laoyao

Emlog非插件实现3D标签云

2021-01-25
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01/25
1.module找到你的侧边栏标签 修改侧边栏标签如下
    <?php
    //3D标签云
    function widget_tag($title){
        global $CACHE;
        $tag_cache = $CACHE->readCache('tags');?>
    <div class="side">
        <h3><i class="fa fa-tags mar-r-4"></i><?php echo $title;?></h3>
        <div id="tag_cloud_widget">
        <div class="tagcloud">
        <script type="text/javascript" src="<?php echo TEMPLATE_URL; ?>js/3dtag.js"></script>
    <?php foreach($tag_cache as $value): ?>
        <a href="<?php echo Url::tag($value['tagurl']); ?>" title="<?php echo $value['usenum']; ?> 篇文章"><?php echo $value['tagname']; ?></a>
    <?php endforeach; ?>
    <div class="clear"></div></div></div></div>
    <?php }?>
2.你的公用模板css放如下css
    /*3D标签云*/
    #tag_cloud_widget{position:relative;width:240px;height:240px;margin:10px auto 10px}
    #tag_cloud_widget a{position:absolute;color:#fff;text-align:center;text-overflow:ellipsis;white-space:nowrap;top:0;left:0;padding:3px 5px;border:0}
    #tag_cloud_widget a:hover{background:#d02f53;display:block}
    #tag_cloud_widget a:nth-child(n){background:#666;border-radius:3px;display:inline-block;line-height:18px;margin:0 10px 15px 0}
    #tag_cloud_widget a:nth-child(2n){background:#d1a601}
    #tag_cloud_widget a:nth-child(3n){background:#286c4a}
    #tag_cloud_widget a:nth-child(5n){background:#518ab2}
    #tag_cloud_widget a:nth-child(4n){background:#c91d13}
3.保存下面js为3dtag.js 放到你的模板js目录里面
    var radius = 100;
    var d = 200;
    var dtr = Math.PI / 180;
    var mcList = [];
    var lasta = 1;
    var lastb = 1;
    var distr = true;
    var tspeed = 11;
    var size = 200;
    var mouseX = 0;
    var mouseY = 10;
    var howElliptical = 1;
    var aA = null;
    var oDiv = null;
    window.onload = function() {
        var i = 0;
        var oTag = null;
        oDiv = document.getElementById('tag_cloud_widget');
        aA = oDiv.getElementsByTagName('a');
        for (i = 0; i < aA.length; i++) {
            oTag = {};
            aA[i].onmouseover = (function(obj) {
                return function() {
                    obj.on = true;
                    this.style.zIndex = 9999;
                    this.style.color = '#fff';
                    this.style.background = '#0099ff';
                    this.style.padding = '5px 5px';
                    this.style.filter = "alpha(opacity=100)";
                    this.style.opacity = 1
                }
            })(oTag) aA[i].onmouseout = (function(obj) {
                return function() {
                    obj.on = false;
                    this.style.zIndex = obj.zIndex;
                    this.style.color = '#fff';
                    this.style.background = '#30899B';
                    this.style.padding = '5px';
                    this.style.filter = "alpha(opacity=" + 100 * obj.alpha + ")";
                    this.style.opacity = obj.alpha;
                    this.style.zIndex = obj.zIndex
                }
            })(oTag) oTag.offsetWidth = aA[i].offsetWidth;
            oTag.offsetHeight = aA[i].offsetHeight;
            mcList.push(oTag)
        }
        sineCosine(0, 0, 0);
        positionAll(); (function() {
            update();
            setTimeout(arguments.callee, 40)
        })()
    };
    function update() {
        var a, b, c = 0;
        a = (Math.min(Math.max( - mouseY, -size), size) / radius) * tspeed;
        b = ( - Math.min(Math.max( - mouseX, -size), size) / radius) * tspeed;
        lasta = a;
        lastb = b;
        if (Math.abs(a) <= 0.01 && Math.abs(b) <= 0.01) {
            return
        }
        sineCosine(a, b, c);
        for (var i = 0; i < mcList.length; i++) {
            if (mcList[i].on) {
                continue
            }
            var rx1 = mcList[i].cx;
            var ry1 = mcList[i].cy * ca + mcList[i].cz * ( - sa);
            var rz1 = mcList[i].cy * sa + mcList[i].cz * ca;
            var rx2 = rx1 * cb + rz1 * sb;
            var ry2 = ry1;
            var rz2 = rx1 * ( - sb) + rz1 * cb;
            var rx3 = rx2 * cc + ry2 * ( - sc);
            var ry3 = rx2 * sc + ry2 * cc;
            var rz3 = rz2;
            mcList[i].cx = rx3;
            mcList[i].cy = ry3;
            mcList[i].cz = rz3;
            per = d / (d + rz3);
            mcList[i].x = (howElliptical * rx3 * per) - (howElliptical * 2);
            mcList[i].y = ry3 * per;
            mcList[i].scale = per;
            var alpha = per;
            alpha = (alpha - 0.6) * (10 / 6);
            mcList[i].alpha = alpha * alpha * alpha - 0.2;
            mcList[i].zIndex = Math.ceil(100 - Math.floor(mcList[i].cz))
        }
        doPosition()
    }
    function depthSort() {
        var i = 0;
        var aTmp = [];
        for (i = 0; i < aA.length; i++) {
            aTmp.push(aA[i])
        }
        aTmp.sort(function(vItem1, vItem2) {
            if (vItem1.cz > vItem2.cz) {
                return - 1
            } else if (vItem1.cz < vItem2.cz) {
                return 1
            } else {
                return 0
            }
        });
        for (i = 0; i < aTmp.length; i++) {
            aTmp[i].style.zIndex = i
        }
    }
    function positionAll() {
        var phi = 0;
        var theta = 0;
        var max = mcList.length;
        for (var i = 0; i < max; i++) {
            if (distr) {
                phi = Math.acos( - 1 + (2 * (i + 1) - 1) / max);
                theta = Math.sqrt(max * Math.PI) * phi
            } else {
                phi = Math.random() * (Math.PI);
                theta = Math.random() * (2 * Math.PI)
            }
            mcList[i].cx = radius * Math.cos(theta) * Math.sin(phi);
            mcList[i].cy = radius * Math.sin(theta) * Math.sin(phi);
            mcList[i].cz = radius * Math.cos(phi);
            aA[i].style.left = mcList[i].cx + oDiv.offsetWidth / 2 - mcList[i].offsetWidth / 2 + 'px';
            aA[i].style.top = mcList[i].cy + oDiv.offsetHeight / 2 - mcList[i].offsetHeight / 2 + 'px'
        }
    }
    function doPosition() {
        var l = oDiv.offsetWidth / 2;
        var t = oDiv.offsetHeight / 2;
        for (var i = 0; i < mcList.length; i++) {
            if (mcList[i].on) {
                continue
            }
            var aAs = aA[i].style;
            if (mcList[i].alpha > 0.1) {
                if (aAs.display != '') aAs.display = ''
            } else {
                if (aAs.display != 'none') aAs.display = 'none';
                continue
            }
            aAs.left = mcList[i].cx + l - mcList[i].offsetWidth / 2 + 'px';
            aAs.top = mcList[i].cy + t - mcList[i].offsetHeight / 2 + 'px';
            aAs.filter = "alpha(opacity=" + 100 * mcList[i].alpha + ")";
            aAs.zIndex = mcList[i].zIndex;
            aAs.opacity = mcList[i].alpha
        }
    }
    function sineCosine(a, b, c) {
        sa = Math.sin(a * dtr);
        ca = Math.cos(a * dtr);
        sb = Math.sin(b * dtr);
        cb = Math.cos(b * dtr);
        sc = Math.sin(c * dtr);
        cc = Math.cos(c * dtr)
    }
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