- From: Erik Dahlström <ed@opera.com>
- Date: Thu, 06 Mar 2008 11:42:24 +0100
- To: robert@ocallahan.org, www-svg <www-svg@w3.org>
Hello Rob, On Wed, 05 Mar 2008 09:17:43 +0100, Robert O'Callahan <robert@ocallahan.org> wrote: > http://www.w3.org/TR/SVG/filters.html#feImage > > If the xlink:href references a stand-alone image resource such as a JPEG, >> PNG or SVG file, then the image resource is rendered according to the >> behavior of the >> 'image'<http://www.w3.org/TR/SVG/struct.html#ImageElement>element >> > > For the <image> element, 'width' and 'height' are required attributes > that > define the size of the viewport into which the image is rendered. > <feImage> > doesn't have these attributes, so how should the image viewport be > sized? If > the image viewport is supposed to be (0,0)-(100%,100%) of the user > coordinate system established by the value of 'primitiveUnits' on the > 'filter' element, I think the spec needs to be clarified to say so > explicitly. Actually, <feImage> have 'x', 'y', 'width' and 'height' attributes since those describe the filter primitive subregion[1]. Even if not specified on the <feImage>, these attributes take their defaults from the <filter> element so that the filter primitive subregion is always defined. I don't think the behavior is undefined as the spec stands, but I agree that it could be clarified. Cheers /Erik [1] http://www.w3.org/TR/SVG/filters.html#FilterPrimitiveSubRegion -- Erik Dahlstrom, Core Technology Developer, Opera Software Co-Chair, W3C SVG Working Group Personal blog: http://my.opera.com/macdev_ed
Received on Thursday, 6 March 2008 10:42:48 UTC