Hi, .getTotalLength() is your friend when having to find out the total path length.
.getPointAtLength() is a way to get the coordinates at a certain length from the origin. This way you could equally space elements along the path. Both methods are implemented in ASV3, ASV6 and Batik. I don't think they are currently implemented in MozillaSVG. I use these methods also for calculating profiles along the line. With .getPointAtLength() I get the coordinates along the line, equally spaced, to calculate elevation values. As to the SMIL question: currently there is no way to ask a SMIL animated element where it is. Unfortunately not. Andreas --- In [email protected], "ddailey" <[EMAIL PROTECTED]> wrote: > Jeroen's question "Is it possible to repeat the streetnames on the path when > you have long > streets?" reminds me of something I haven't been able to figure out: > > How long is a path and where does it go? The renderer must know. > > If I have a path, lets say like <path d="M 10 150 C 200 80 300 300 350 100" > stroke="black" fill="none" stroke-width="5" /> > > Suppose I'd like to put objects (like traffic lights) spaced along the path > at some intervals -- how then to know where the path actually is in x,y > coordinates. I didn't want (because of laziness and it's hard work) to have > to calculate points on the bezier curve -- the rendering engine has already > done that for me when it drew the curve. So I thought: hmmm... maybe I could > run an invisible SMIL animation along the curve and then ask where the > animated thing is at time t -- sort of a Heisenberg uncertainty approach. > Anyhow, this just suggested to me another question I don't know the answer > to: > > if I've moved an object around a lot as with an animation, can I ask where > it is now? Suppose I've rotated groups and objects and viewports and so > forth and I now want to ask where is something on the screen in some > absolute sense, how do I do that? This reminds me of yet another unanswered > question that rightfully deserves its own thread which I will start in a > moment. I'm new to this group and haven't had a chance to adapt to its > unique ambience so apologies if I ramble, just let me know and I'll adapt > albeit slowly. > > DD > > ----- Original Message ----- > From: "Jeroen Vanattenhoven" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Tuesday, October 04, 2005 4:02 PM > Subject: Re: [svg-developers] Re: Streetnames text problem > > > > ok, thanks Andreas: so I will need to do some preprocessing to achieve > > that. I need preprocessing anyway so that won't be a problem. > > > > Is it possible to repeat the streetnames on the path when you have long > > streets? > > > > And Andreas, I have another question for you: I tried ogis2svg.exe on > > your website. It works great, but I have a problem with using > > --referenceframe. How do I write the minx miny maxy may attributes on > > the commandline? I've tried several possibilities but all failed. The > > idea for the referenceframe is that the shape/svg is clipped? Or does it > > just adjust the viewBox? The latter would be useless in my case since it > > makes the file way to big. (I'm clipping a city out of a province, so I > > don't need the whole province). > > > > Regards, > > > > Jeroen > > > > Andreas Neumann schreef: > > > >>Hi Jeroen, > >> > >>Thats exactly the reason why all www.carto.net SVG mapping examples don't > >>use the > >>mirror transform, but we multiply the y-values by -1. This way the text > >>elements can be > >>rendered correctly. > >> > >>Andreas > >> > >>--- In [email protected], Jeroen Vanattenhoven > >><[EMAIL PROTECTED]> wrote: > >> > >> > >>>Hello, > >>> > >>>I've included streetnames for my map. I just put them on the path of the > >>>street which work very nicely. The problem is that with real coördinates > >>>the Y-axis points up and for SVG points down. My whole map has a > >>>transform="scale(1,-1)" attribute which makes my map look correct and > >>>not upside down. > >>> > >>>When I want to display my text now, it is shown at the correct position, > >>>but is shown mirrored. If I put my text outside the element with > >>>scale(1,-1), the text isn't mirrored, but it is shown at the wrong > >>>position. > >>> > >>>Any thoughs? > >>> > >>>Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm > >>> > >>> > >> > >> > >> > >> > >> > >>----- > >>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 > >> > >> > >> > >> > >> > >> > >> > >> > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Anti-Virus. > > Version: 7.0.344 / Virus Database: 267.11.10/119 - Release Date: 4/10/2005 > > > > > > > > > > ----- > > 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 > > > > > > > > > > > > > > > > ------------------------ Yahoo! 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