CSS3 transform matrix矩阵与镜像对称实例页面

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代码:

HTML代码:
<p id="matrixDetail">目前属性值为:matrix(1,0,0,1,0,0)</p>
<div class="matrix_image">
   <div id="matrixLine" class="matrix_line"></div>
    <input type="text" id="matrixInput" class="matrix_input" autocomplete="off" placeholder="输入角度确定镜像对称轴" />
   <img id="matrixImage" src="/image/study/s/s256/mm1.jpg" width="256" height="191" />
</div>
                
JS代码:
(function() {
   var $ = function(selector) {
      return document.querySelector(selector);
   };
   var $css3Transform = function(element, value) {
      var arrPriex = ["O", "Ms", "Moz", "Webkit", ""], length = arrPriex.length;
      for (var i=0; i < length; i+=1) {
         element.style[arrPriex[i] + "Transform"] = value;
      }
   };
   var eleDetail = $("#matrixDetail"), eleInput = $("#matrixInput"),
      eleLine = $("#matrixLine"), eleImage = $("#matrixImage");
      
   if (eleDetail && eleInput && eleImage) {
      eleInput.addEventListener("change", function() {
         var value = parseInt(this.value, 10);
         if (value) {
            $css3Transform(eleLine, "rotate("+ value +"deg)");
            // 确认对称线
            var k = Math.tan( -1 * value * Math.PI / 180),
               ux = 1 / Math.sqrt(1 + k * k), uy = k / Math.sqrt(1 + k * k);
            
            if (k > 1000000) {
               ux = 0, uy = 1;
            } else if (k < -1000000) {
               ux = 0, uy = -1;
            }            
            
            var valTransform = "matrix("+ (2*ux*ux-1).toFixed(6) +","+ (2*ux*uy).toFixed(6) +","+ (2*ux*uy).toFixed(6) +","+ (2*uy*uy-1).toFixed(6) +",0,0)";
            eleDetail.innerHTML = '目前属性值为:' + valTransform;
            $css3Transform(eleImage, valTransform);
         } else {
            this.value = "";   
         }
      });
   }
   }   
})();
                

效果:

目前属性值为:matrix(1,0,0,1,0,0)

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