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[svgwg] Issue: Radial gradients: "fully overlapping" vs "focal point on the edge" - which takes precedence? (#648) marked as Agenda+

From: Dirk Schulze via GitHub <sysbot+gh@w3.org>
Date: Mon, 11 Mar 2019 06:31:58 +0000
To: public-svg-issues@w3.org
Message-ID: <issues.labeled-413475686-None-sysbot+gh@w3.org>
dirkschulze has just labeled an issue for https://github.com/w3c/svgwg as "Agenda+":

== Radial gradients: "fully overlapping" vs "focal point on the edge" - which takes precedence? ==
If you have a radial gradient with a start radius (`fr`) of 0, end radius (`r`) of  0 and corresponding points have the same coordinates (i.e `<cx,cy,r> == <fx,fy,fr>`), it could be said that the circles are both fully overlapping and that the focal point is on the edge of the end circle (if a degenerate circle can be said to have an edge that is).

The "fully overlapping" rule comes from [1]. The "focal point on the edge" rule doesn't appear to be that well-defined (at least I only see it in the annotations and figures in [1] and sections above mention it but only for `spreadMethod=repeat`).

Based on a simple test [2], there is currently some different interpretations: Gecko renders that test with yellow while Blink renders it blue.

[1] https://www.w3.org/TR/SVG2/pservers.html#RadialGradientNotes
[2] https://jsfiddle.net/0v3tuoq4/

See https://github.com/w3c/svgwg/issues/648
Received on Monday, 11 March 2019 06:31:59 UTC

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