- From: Paul LeBeau via GitHub <sysbot+gh@w3.org>
- Date: Thu, 10 Feb 2022 03:25:09 +0000
- To: public-svg-issues@w3.org
Philippe Verdy wrote:
> "M0,0ZZZZZZZZZZ" just creates a single subpath "M0,0Z",
This is not accurate. There is nothing in the spec that corroborates that statement.
The spec states:
> If a "closepath" is followed immediately by a "moveto", then the "moveto" identifies the start point of the next subpath. If a "closepath" is followed immediately by any other command, then the next subpath must start at the same initial point as the current subpath.
It doesn't distinguish close-path commands from other commands. So each extra Z should create new sub-path and immediately close it.
As proof, try the following test case in Firefox: https://jsfiddle.net/msqyx1k5/
````
<svg viewBox="-50 -50 100 100" width="400">
<defs>
<marker id="Triangle" viewBox="0 0 10 10" refX="1" refY="5"
markerUnits="strokeWidth" markerWidth="4" markerHeight="3"
orient="auto">
<path d="M 0 0 L 10 5 L 0 10 z" fill="rgba(0,0,0, 0.2)"/>
</marker>
</defs>
<path d="M-40,0Z" marker-end="url(#Triangle)" stroke="red" stroke-width="4"/>
<path d="M40,0ZZZZZ" marker-mid="url(#Triangle)" stroke="red" stroke-width="4"/>
</svg>
````
You can see that the 20%-black mid markers stack on top of each other to make a darker triangle.
So Firefox at least creates multiple sub-paths.
Note: Don't try this in Chrome. It is buggy and does odd things. I'm going to file a bug on that now.
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Received on Thursday, 10 February 2022 03:25:11 UTC