On Thursday, August 6, 2009, 7:41:04 AM, Anthony wrote:
AG> Hi Cameron,
AG> Cameron McCormack wrote:
>> Consider the following document:
>> <svg xmlns="http://www.w3.org/2000/svg">
>> <rect width='200' height='100'/>
>> <g fill='white' fill-opacity='0.5'>
>> <rect width='100' height='100'/>
>> <rect x='100' width='100' height='100' color-interpolation='linearRGB'/>
>> </g>
>> </svg>
>> Should the right half of the rectangular region be a different colour
>> from the left half? IIUC, the use of ‘color-interpolation’ should
>> affect how the right white <rect> is composited into the black <rect> in
>> the background.
AG> Yes. The should be different colours because the 'color-interpolation' affects
AG> how the right <rect> is composited on to the background.
Right. (it also affects things like gradients).
>> Batik, Opera and Firefox all show a uniform #808080 colour in the
>> rectangular region, which makes me wonder if I’ve used the
>> ‘color-interpolation’ correctly.
AG> Opera 10 shows a uniform #7E7E7E for me.
AG> To my understanding:
AG> - the left <rect> should be #7F7F7F
AG> - the right <rect> should be #BBBBBB
Yes.
So, lets have that slapped into a test.
I added all the other values for color-interpolation to the attached.
--
Chris Lilley mailto:chris@w3.org
Technical Director, Interaction Domain
W3C Graphics Activity Lead
Co-Chair, W3C Hypertext CG
