Wrong <mask> bounds (x, y, widht, height) with the default maskUnits=objectBoundingBox

[stanio]

maskUnits:

For <mask>, maskUnits defines the coordinate system in use for the geometry attributes (x, y, width and height) of the element.

objectBoundingBox

This value indicates that all coordinates for the geometry attributes represent fractions or percentages of the bounding box of the element to which the mask is applied.

Seems like fraction values are interpreted as values in the user coordinate system, instead:

mask-bounds.svg:

<svg xmlns="http://www.w3.org/2000/svg"
    width="100" height="100" viewBox="0 0 100 100">

  <defs>
    <mask id="myMask" maskContentUnits="objectBoundingBox"
        x="-0.5" y="-0.5" width="2" height="2">
      <rect x="-0.5" y="-0.5" width="1" height="1" fill="white" />
    </mask>
  </defs>

  <rect x="15" y="15" width="160" height="160" mask="url(#myMask)"
      fill="white" stroke="blue" stroke-width="20" />

</svg>

Actual	Expected

[stanio]

Alternatively, percentages work fine:

     <mask id="myMask" maskContentUnits="objectBoundingBox"
-        x="-0.5" y="-0.5" width="2" height="2">
+        x="-50%" y="-50%" width="200%" height="200%">

[weisJ]

This should be fixed in the latest snapshot version.

[stanio]

Confirming it works for me using the current 1.5.0-SNAPSHOT.

[weisJ]

Version 1.5.0 has been released