转换问题 - 父母对鼠标移动的图像起源

时间:2016-10-31 18:49:40

标签: javascript jquery css css3 css-transforms

当用户在图片父元素(此处为img)上执行mousemove时,我尝试在.carousel-img上添加平滑移动效果,但我无法正常运行。

请你看看这个演示,让我知道我做错了什么?

$('.carousel-img').on('mousemove', function(e){
  $('.carousel-img img').css({'transform-origin': ((e.pageX - $('.carousel-img img').offset().left) / $('.carousel-img img').width()) * 100 + '% ' + ((e.pageY - $('.carousel-img img').offset().top) / $('.carousel-img img').height()) * 100 +'%'});
    })
html, body{height:100%; width:100%;}
.box{position: relative; height:100%; width:100%;}
.carousel-img {
  position: absolute;
  right:0;
  bottom:0;
  left: 0;
  top:0;
  padding:100px;

}
.carousel-img img {
  position: relative;

}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
 <div class="box">
      <img src="http://placehold.it/1920x600/fff/fff">
      <div class="carousel-img">
         <img src="http://placehold.it/200x150/ff0000/ff0000" >
      </div>
</div>

1 个答案:

答案 0 :(得分:0)

您正在更改transform-origin属性而不是transform属性。您想使用translate(x,y)来定义您要查找的动作。

您还应该包含到img选择器的转换,以便移动顺畅。我还添加了一些其他属性,这些属性在添加更复杂的动画(如translate3D类型)时可能很有用。

检查下面的更新代码段。

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$('.carousel-img').on('mousemove', function(e) {
  var translateX = ((e.pageX - $('.carousel-img img').offset().left) / $('.carousel-img img').width()) * 100;
  var translateY = ((e.pageY - $('.carousel-img img').offset().top) / $('.carousel-img img').height()) * 100;
  var translateProperty = 'translate(' + translateX + '%, ' + translateY + '%)';

$('.carousel-img img').css({
    '-webkit-transform': translateProperty,
    '-moz-transform': translateProperty,
    '-ms-transform': translateProperty,
    '-o-transform': translateProperty,
    'transform': translateProperty
  });
});
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html,
body {
  height: 100%;
  width: 100%;
}

.box {
  position: relative;
  height: 100%;
  width: 100%;
}

.carousel-img {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  top: 0;
  padding: 100px;
}

.carousel-img img {
  position: relative;
  
  /* Add transition */
  transition: all 0.2s ease;
  -webkit-transition: all 0.2s ease;
  /* Default values for transition to be possible */
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
 <div class="box">
      <img src="http://placehold.it/1920x600/fff/fff">
      <div class="carousel-img">
         <img src="http://placehold.it/200x150/ff0000/ff0000" >
      </div>
</div>
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