Emlog非插件实现3D标签云

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)
        }

THE END

作者信息

作者:Emlly

我不懒,我只是开启了节能模式

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