将 SVG 圆组合并为单一路径

Question

我可能把问题的标题弄错了，因为我真的不知道如何问我想要做什么。让我解释一下。

我有一个包含约 700 个组的大型 SVG 文件 (<g></g>)。每个组都有不同数量的 <circle> 路径，位置不同，组内的所有圆圈具有相同的半径和颜色。目前，每个圆圈都是它自己的路径，这使得文件太大而无法执行任何操作，因为有数十万个这样的圆圈。我需要将每个组中的所有圆圈组合成一条路径。我已经想出如何在 Adobe Illustrator 中执行此操作，我的方法是 select 来自图层面板的组内的所有圆圈，然后使用 Windows>Pathfinder>Unite 将圆圈合并到一个形状。但是，我将不得不遍历每个组 one-by-one，这太多了。有什么可以为我做这样的事情吗？我不想花几天时间检查每个小组团结他们...

我的 SVG 示例：

<g fill="#71b190" stroke="#71b190" stroke-width=".1">
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</g>

当我使用 Illustrator 合并圆圈时，它看起来像这样（如您所见，它小得多）：

<g clip-path="url(#a)" transform="translate(353688.12 120977.663) scale(.695)" fill="none" stroke="#a1c3cc">
    <path d="M-942472.56-471233.662H942477.89h-5.236V471233.714H-942477.89h5.236V-470191.752" stroke-width=".1"/>
    <path d="M-942477.796-172787.596H942477.796M-507890.812 471238.898V-471238.898" stroke-width="1.1"/>
</g>

有什么东西可以帮我做这个吗？或者比我提到的方式更快的方法？也许这是 Snap.svg 可以做到但我想不通的事情？

Answer 1

我不太确定你真正想要的是什么，也不确定它会小得多，将圆圈表示为路径，它最终在路径字符串中包含更多信息，但你确实摆脱了一些标记（可能还有 dom 元素）。所以不确定这种类型的东西是否是你想要的，但可能会给出一些想法......

假设你有一些圈子..

<svg id="svg" version="1.1" xmlns="http://www.w3.org/2000/svg">
   <circle cx="50.202" cy="50.972" r="10.1"/>
   <circle cx="40.186" cy="50.37" r="10.1"/>
   <circle cx="30" cy="50.771" r="10.1"/>
</svg>

您可以使用 Snap 遍历它们并构建一个字符串，就像这样..

Snap.plugin( function( Snap, Element, Paper, global ) {
        Paper.prototype.circlePathString = function(cx,cy,r) {
            var p = "M" + cx + "," + cy;
            p += "m" + -r + ",0";
            p += "a" + r + "," + r + " 0 1,0 " + (r*2) +",0";
            p += "a" + r + "," + r + " 0 1,0 " + -(r*2) + ",0";
            return p;
        };
});

var s = Snap("#svg");
var totalPath = '';
var circles = s.selectAll('circle');

circles.forEach( function( el ) {
   totalPath += s.circlePathString( el.attr('cx'), el.attr('cy'),    el.attr('r') );
   el.remove();
} );

var newCirclePath = s.path( totalPath ).attr({ fill: 'red' });
alert( s.innerSVG() );

您必须遍历每个组并添加新路径，但这可能很有用。我不确定插画师是否在做其他聪明的事情来减小尺寸，或者是否有更简单的方法来表示路径中的圆圈，（或者我只是错过了重点），所以这可能还不够，但可以帮助别人。

jsfiddle

Answer 2

即使可以使用一些 js 来完成，恕我直言，Illustrator（您已经使用的工具）为您提供了一种方法。 （或者如果他们不给它是可能的）

据我了解，您已经有了这样的结构，但重复了一千次：

然后您要做的是为每个组使用 Illustrator 的 pathfinders 中的 unite 工具。

让 Illustrator 为您完成。

创建动作：Window > Actions > Create New Action（在新打开面板的右下角）。设置它的名字。然后它开始记录您正在做的事情，因此请密切注意弹出面板以避免发生不良情况。
Select 第一组，如下图所示。对其应用 unite pathfinder。
Select下一组，但是为了保存在我们的batch Action中，使用Select > Next Object Below.确保select 动作已保存在“动作”面板中：
然后你可以点击左下角的方块停止录制。
现在，要么你选择点击播放按钮一千次，要么你写一个脚本来做。
似乎 Adobe 的 ExtendScript 既不能调用操作也不能调用 Pathfinder 工具……因此，如果您在 mac 或 VB win 脚本上，则必须使用 AppleScript。

我不知道 VB 但这是 AppleScript，您会明白其中的逻辑。

tell application "Adobe Illustrator"
    activate
    set x to count group items of document 1
    repeat x times
        do script "Your Awesome Action" from "Default Actions"
    end repeat
end tell

从 AppleScript 编辑器执行此脚本，（您的文档仍处于打开状态并且尚未合并组 selected） 稍等片刻，您就完成了.

将 SVG 圆组合并为单一路径

Unite SVG Group of Circles to Single Path

svg

adobe-illustrator

snap.svg