Vincent, This page represents a good piece of work.
First some nit picking regarding language: 'A, if X; B, else': change else -> otherwise (2x) 'We may choose to either differ a side-float, or ...': change differ -> defer Then a comment on the rules: Rule 1. Why does the rule not require not both x >= 0 and x + ipd <= ipd(ref-area), for both start and end floats, unless the float is wider than the ipd(ref-area)? In other words, why is rule 7 not required for any start and end floats? In 'Properties of the model': I do not see that rule 7 is satisfied. Finally some thoughts on a possible algorithm: The algorithm should combine pagebreak and linebreak calculations in a single dynamic calculation: for each legal pagebreak for each active pagebreak node layout the page and calculate its demerits Laying out the page involves breaking each paragraph on the page into lines; each legal linebreak/active linebreak node combination (that is, each iteration in the two nested loops of the linebreak calculation) is associated with a certain side float layout, and thus the line widths for that case are known and the demerits can be calculated. It is just a rough idea. I have no clear picture what the linebreak calculation in combination with side floats looks like. I just have the feeling that it should be possible in principle. Obviously, it may be necessary to break a paragraph into lines several times, each time with a different side float layout. It will be necessary to store earlier linebreak calculations for a paragraph in a clever way, so as to avoid unnecessary recalculations for identical linewidths. Working this out into a realistic algorithm requires much more thinking. Regards, Simon On Fri, Aug 11, 2006 at 01:26:51PM +0200, Vincent Hennebert wrote: > 2006/8/11, Apache Wiki: > >Dear Wiki user, > > > >You have subscribed to a wiki page or wiki category on "Xmlgraphics-fop > >Wiki" for change notification. > > > >The following page has been changed by VincentHennebert: > >http://wiki.apache.org/xmlgraphics-fop/GoogleSummerOfCode2006/FloatsImplementationProgress/ImplementingSideFloats > > > >The comment on the change is: > >Difficulties around side-floats <snip> -- Simon Pepping home page: http://www.leverkruid.eu