thanks for the response! i am sending the svg to adobe document server for output as PDF. What i was trying to accomplish was a "print window" type functionality.
After testing some other stuff, I realized all I need to do is set the viewbox of the source svg for pdf output to be the area that is visible onscreen ... very simple and a huge DOH! on my part. Thanks again for you time tim --- In [email protected], "ddailey" <[EMAIL PROTECTED]> wrote: > > > Tim Hesse wrote: > > > I need to "extract" the elements within a bounding rectangle which > > would entail slicing lines and polys that are in the rectangle but > > run over the edges of the bounding rectangle. > > > > Any help for things to look at would be greatly appreciated, tia > > Let's call your "bounding rectangle" the Big Box. > > I'm assuming that you don't just want to rely on using the Big Box as a > clipPath for the other content, since that would solve the problem (in terms > of drawing their intersection) but without having those things available for > subsequent data analysis. > > I've never really worked on this problem but I think I'd proceed as follows: > > 1. Find all the drawn objects in the SVGDocument. I'd probably loop through > the W3C list of nodetypes of drawn objects : > 'path', 'text', 'rect', 'circle', 'ellipse', 'line', 'polyline', 'po lygon', > 'image' and 'use'. I'd add <g> to that list and then do a > getElementsByTagName on each type of rendered object until I have a big list > of just the objects that are drawn on the canvas, hence avoiding <filter> > and <def> and the like. > > 2. Find the bounding box of each drawn object using getBBox() > > 2a. If the drawn object is entirely inside the BigBox then it's easy > 2b If it's entirely outside the BigBox, then its easy > 2c. If its partly inside, then calculate the intersection of the box with > the object using the advice of Kevin Lindsey at > http://www.kevlindev.com/gui/math/intersection/index.htm > 2d. If the object we're looking at is a text object, then ick -- give it to > a student and let them work on it. > > I'll be interested to see if others suggest something more straightforward, > since this is just what came to mind. > > David > ----- 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/ <*> 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/
