I’m trying to do generate sketchy svg file by vectorizing pics. Thenafter, I rework the svg with some node script.

To achieve my goal, I have to determine if a point is over a given path. To do that I use https://github.com/rubenv/point-in-svg-polygon

When I call isInside(point, path), I encounter an error: Uncaught Error Error: Unknown operator: for polygon

After debugging, I can see that my SVG contains V and H commands with 2 parameters, and the lib restricts to one.

Exemple

<path d="M 0,512 V 0 H 512 1024 V 512 1024 H 719.62244 C 450.28457,1024 ... Z" id="path2785"/>

The documentation tends to agree with the lib according to https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/Paths, but I can’t imagine Inskape doing this for no reason.

Could you tell me why inkscape is doing this (can’t find it with google) ? Is this an issue of the library or with inkscape?

CodePudding user response：

All path commands that take values can have those values repeated and they generally mean repeat that command.

per the specification, M 0,0 H 5 10 means the same as M 0,0 H 5 H 10

The only exception is M, which turns into L (and m which becomes l) so

M 0,0 10,0 means M 0,0 L 10, 0

This isn't that useful for H and V because it won't look much different unless you're drawing markers. For example if you draw a horizonal line from 0,0 to 10,0 that will look the same usually as drawing a horizontal line from 0,0 to 5,0 and then continuing that line from 5,0 to 10,0.