Question

最新的Chrome版本（不确定的确切版本）已经破坏了我的一些SVG，vector-effect:non-scaling-stroke呈现了错误的别名折线。我无法弄清楚是什么引发了这个错误。

var viewBoxen = {
  good:"-55.91646158020719 -61.478141667102406 111.83292317296 122.95628333555779",
  bad:"-55.92 -61.48 111.83 122.96"
};
var svg  = document.querySelector('svg'),
    span = document.querySelector('span');
var buttons = document.querySelectorAll('button');
for (var i=buttons.length;i--;) (function(btn){
  var viewBox = viewBoxen[btn.id];
  btn.onclick = function(){
    span.innerHTML = viewBox;
    svg.setAttribute('viewBox',viewBox);
  }
})(buttons[i]);
buttons[1].click();

svg { display:inline-block; width:200px; height:200px; border:1px solid red; margin:10px }
polyline { fill:none; stroke:black; stroke-width:1px; vector-effect:non-scaling-stroke }

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-55.92 -61.48 111.83 122.96">
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  <polyline points="-55.92,-61.48 55.92,61.48"/>
</svg>

<p>viewBox="<span></span>"</p>
<p>
  <button id="good">High Precision viewBox</button>
  <button id="bad">Low Precision viewBox</button>
  </p>

另一个例子/比较可见于：

正如您所看到的，如果您在Stack Overflow上运行代码片段，则使用viewBox的高精度（14个小数位）按预期渲染折线，但是当我删除精度（2个小数位）时，渲染折线不同，变大和别名。

如果您查看JSFiddle或我的网站上的比较，您会发现高精度viewBox并不能始终解决问题。

我的问题：您能否帮助我找出Chrome中触发此错误的内容，并（特别是）弄清楚如何避免/一直解决这个问题？

_{那些想知道这些图片来源的人可能对http://phrogz.net/SVG/TurtleTest.html和http://phrogz.net/tmp/StarryTurtles.html}

感兴趣

解决Chrome

0 个答案: