[CREATE] Color opacity

[Olivier BERTEN]

IMHO, defining a color as a special gradient is wrong. A color is one of 
the materials used to build a gradient, while others can be patterns and 
textures/tiles. You should be able to build a gradient with any type of 
fill element (or stroke if it's a stroke gradient). So a color should be 
a stop attribute, not a single stop gradient.


Chris Lilley a écrit :

> On Tuesday, May 20, 2008, 4:26:50 PM, Olivier wrote:
>
> OB>    
> OB>  
> OB> SVG Tiny 1.2
> OB> <http://www.w3.org/TR/SVGMobile12/painting.html#SolidColorElement>
> OB> gives an opacity argument to the solidColor element. What is the
> OB> concrete signification of color opacity? An object can have an
> OB> opacity level but giving that attribute to a color isn't it mixing concepts?
>
> Any object can have a global opacity, yes.
>
> It can also have a fill opacity, stroke opacity, and so on.
>
> Consider an object which has a gradient fill; one stop is yellow at
> full stop-opacity and one is red at 0.2 stop-opacity. (You could also add stroke
> opacity, fill-opacity, or even global opacity, to the same object).
>
> Now consider a gradient where both stops have the same color and same
> opacity. (This is what people used to do to make a paaint server,
> before we had a solidColor element). So its essentially a single stop
> gradient; and it has a solid-opacity property analagous to the
> stop-opacity.
>
>
>   

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