Re: New methods to support interactivity

Sorry. Forget I said anything. I forgot about the enclosure and
intersection calls on SVGSVGElement.

Paul


On 22 July 2015 at 22:40, Paul LeBeau <paul.lebeau@gmail.com> wrote:

> As SVG takes off more and more, I believe there is a need for better ways
> to interact with documents.  At the moment interaction is pretty limited.
> We only have mouse in/out events, CSS hover and Document.elementFromPoint().
>
> Several times in recent weeks people have asked on StackOverflow for ways
> to detect which elements are under the pointer.  At the moment, the only
> way to do that is with elementFromPoint().  But that has limitations.
>
> At the moment some simple interactivity tasks are impossible, or require
> ugly hacks.
>
> Another common task is to select lines/edges in a chart.  The best
> solution we have at the moment is to add invisible fat lines over the top
> of the real ones.
>
> I think it would be nice to add some more methods to enable better
> interactivity. For example:
>
> elementsFromPoint
>     Get all elements under a point
>
> elementsWithinBox
>     Get all elements that intersect with the given BBox.
>
> pointInPath / pointInShape
>     Return true if a point is within the fill (or stroke?) of a shape
>
> etc.
>
> Paul
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