SVG 动画图形箭头

SVG Animated Graph Arrow

这是我第一次使用 SVG,我想知道是否可以创建带箭头的动画线图。我发现了多个不带箭头的动画线图、带箭头的非动画线图和带箭头的动画直线的多个示例,但不完全是我要找的。我在下面附上了一些我一直在玩的代码笔示例。有谁知道这是否是 possible/have 的解决方案?将不胜感激!

  1. 动画线缺少箭头(需要箭头): http://codepen.io/alexandraleigh/pen/jVaObd

    # HTML
    <div class="graph__wrapper">
      <svg width="315px" height="107px" viewBox="0 0 315 107" version="1.1">
        <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
          <path d="M2.10546875,95.75 L40.5546875,68.3476562 L55.2109375,81.1796875 L65.2148437,76.3945312 L96.1835937,86.8320312 L131.023438,19.9414062 L142.15625,23.7226562 L183.605469,2.1953125 L211.007812,22.3320312 L234.320312,71.5664062 L234.667969,83.0039062 L244.019531,83.0039062 L247.105469,88.8320312 L312.695312,104.839844" id="Path-1" stroke="white" stroke-width="4" sketch:type="MSShapeGroup" class="path"></path>
        </g>
      </svg>
    </div> 
    
    
    # CSS(Less)
    
    @import "lesshat";
    
    @darkgrey:          #303030;
    
    *{
      box-sizing: border-box;
    }
    
    body{
      background: @darkgrey;
    }
    
    .graph__wrapper{
      width: 400px;
      margin: 30px auto;
      position: relative;
    
      svg{
        position: absolute;
        margin: 36px 0px 0px 15px;
      }
    }
    
    .path {
      stroke-dasharray: 1000;
      stroke-dashoffset: 1000;
      animation: dash 3s ease-in forwards;
      animation-iteration-count: 1;
      animation-delay: 1s;
    }
    
    @keyframes dash {
      to {
        stroke-dashoffset: 0;
      }
    }
    
    .description{
      font-family: "Roboto";
      color:lighten(@darkgrey, 50%);
      text-align: center;
      margin: 40px 0px;
    } 
    
  2. 带箭头的动画直线(需要在路径上的多个点停止): http://codepen.io/alexandraleigh/pen/yVPYrY

  3. 我尝试添加从#1 到#2 的路径描述并且它有所需的最终图形,只是没有动画: http://codepen.io/alexandraleigh/pen/pNdgWR

  4. 我也尝试添加从 #2 到 #1 的箭头标记,但箭头没有动画: http://codepen.io/alexandraleigh/pen/aBVdVY

我也愿意使用 http://snapsvg.io/ 之类的插件,但还没有看到任何对我的情况有帮助的工作示例。

您可以使用偏移运动(旧语法:运动路径)来做到这一点。 请注意,这是一项高度实验性的功能。它目前仅适用于 Chrome。更重要的是,我在这里使用 "old" 语法,因为这是目前在 chrome 中使用的语法,但它很快就会切换到新的 systax...

* {
  box-sizing: border-box;
}
body {
  background: #303030;
}
.graph__wrapper {
  width: 400px;
  margin: 30px auto;
  position: relative;
  svg {
    position: absolute;
    margin: 36px 0px 0px 15px;
  }
}
.path {
  stroke-dasharray: 428;
  stroke-dashoffset: 428;
  animation: dash 3s ease-in forwards;
  animation-iteration-count: 1;
  animation-delay: 1s;
}
@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}
@keyframes pm {
  from {
    motion-offset: 0%;
  }
  to {
    motion-offset: 100%
  }
}
#arrow {
  animation: pm 3s ease-in forwards;
  animation-iteration-count: 1;
  animation-delay: 1s;
  motion-path: path('M2.10546875,95.75 L40.5546875,68.3476562 L55.2109375,81.1796875 L65.2148437,76.3945312 L96.1835937,86.8320312 L131.023438,19.9414062 L142.15625,23.7226562 L183.605469,2.1953125 L211.007812,22.3320312 L234.320312,71.5664062 L234.667969,83.0039062 L244.019531,83.0039062 L247.105469,88.8320312 L312.695312,104.839844');
  motion-rotation: auto;
  motion-anchor: center;
}
.description {
  font-family: "Roboto";
  color: lighten(@darkgrey, 50%);
  text-align: center;
  margin: 40px 0px;
}
<div class="graph__wrapper">
  <svg width="315px" height="107px" viewBox="0 0 315 107" version="1.1" style="overflow:visible">
    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
      <path d="M2.10546875,95.75 L40.5546875,68.3476562 L55.2109375,81.1796875 L65.2148437,76.3945312 L96.1835937,86.8320312 L131.023438,19.9414062 L142.15625,23.7226562 L183.605469,2.1953125 L211.007812,22.3320312 L234.320312,71.5664062 L234.667969,83.0039062 L244.019531,83.0039062 L247.105469,88.8320312 L312.695312,104.839844"
      id="Path-1" stroke="white" stroke-width="4" sketch:type="MSShapeGroup" class="path"></path>



      <polyline id="arrow" points="0,-5 10,0 0,5 1,0" fill="white" />

    </g>
  </svg>
</div>

您也可以使用 animateMotion 执行此操作,但 svg 动画很快就会被描述。你迟早会以任何方式重写你的代码:-(

* {
  box-sizing: border-box;
}
body {
  background: #303030;
}
.graph__wrapper {
  width: 400px;
  margin: 30px auto;
  position: relative;
  svg {
    position: absolute;
    margin: 36px 0px 0px 15px;
  }
}
.path {
  stroke-dasharray: 428;
  stroke-dashoffset: 428;
  animation: dash 3s linear forwards;
  animation-iteration-count: 1;
  animation-delay: 1s;
}
@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}
.description {
  font-family: "Roboto";
  color: lighten(@darkgrey, 50%);
  text-align: center;
  margin: 40px 0px;
}
<div class="graph__wrapper">
  <svg width="315px" height="107px" viewBox="0 0 315 107" version="1.1" style="overflow:visible">
    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
      <path d="M2.10546875,95.75 L40.5546875,68.3476562 L55.2109375,81.1796875 L65.2148437,76.3945312 L96.1835937,86.8320312 L131.023438,19.9414062 L142.15625,23.7226562 L183.605469,2.1953125 L211.007812,22.3320312 L234.320312,71.5664062 L234.667969,83.0039062 L244.019531,83.0039062 L247.105469,88.8320312 L312.695312,104.839844"
      id="Path-1" stroke="white" stroke-width="4" sketch:type="MSShapeGroup" class="path"></path>



      <polyline id="arrow" points="0,-5 10,0 0,5 1,0" fill="white">
        <animateMotion rotate="auto" begin="1s" dur="3s" repeatCount="1" fill="freeze">
          <mpath xlink:href="#Path-1" />
        </animateMotion>
      </polyline>

    </g>
  </svg>
</div>