Hi Robert,
Maybe I am not understanding, but consider two equivalent crescent shapes (or C's) that share a centroid but with one of them rotated 90 degrees. The intersection of the bounding boxes is much larger than the bounding box of the intersection of the shapes. David From: [email protected] [mailto:[email protected]] On Behalf Of Robert Longson Sent: Tuesday, May 29, 2012 4:45 AM To: [email protected] Subject: [svg-developers] Re: getBBox that takes into account clipping? Andrew, You could get the bounding box of the clip path and then just work out the intersection of the two rectangles. See the answer here for more details http://stackoverflow.com/questions/10430518/getting-a-display-bounding-box-f or-a-clipped-object/10433013#10433013 Best regards Robert. --- In [email protected] <mailto:svg-developers%40yahoogroups.com> , Andrew Shellshear <andrew@...> wrote: > > Hello SVGers, > > The getBBox method (by design) doesn't take into account clipping. Is there > a method that does, or failing that, has anyone written some javascript to > do it? > > For example: > > <svg id="foo" x="0" y="0" width="100" height="100"> > <rect width="200" height="200" fill="red" stroke="black"/> > </svg> > > document.getElementById("foo").getBBox() would return {x:0, y:0, width:200, > height:200}. > I need {x:0, y:0, width:100, height:100}. > > (Some context: I'm writing a scrollbar widget - yes, I know, I know - and > currently I can't put a scrollable area inside another scrollable area, > because getBBox ignores my attempts at clipping.) > > I started trying to write something myself, but I'm getting bogged down > with the various matrix transforms you need to do to make this work > generally. > I figure you have to rewrite getBBox() in javascript, but at each stage > checking if there's an svg element, or a clip-path, etc. and use > combinations of getBBox(), getScreenCTM(), getTranformToElement(), etc. > > Have any of you done this or seen it done? > > Cheers, > > Andrew Shellshear. > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed] ------------------------------------ ----- To unsubscribe send a message to: [email protected] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ----Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
