We have eofill in MP (in pdf/ps in fact) and that likely will do what you need.
Alan On Sat, 17 Aug 2019 00:31:38 +0100 Adam Reviczky <revic...@gmail.com> wrote: > Hi Hans, > > One MetaPost feature that I was looking forward to is the ability to create > a fill between two shapes. > Something like a difference function of two path's. > > For logos I use the workaround with creating a path alongside the excluded > areas but it is always cumbersome. > > I have briefly mentioned it back here: > https://mailman.ntg.nl/pipermail/ntg-context/2011/056910.html > > Just for illustration purposes, if I wanted to fill the area in between two > circles: > > *path p ; > **p := fullcircle scaled 1cm ; > **path q ; > **q := fullcircle scaled .5cm ; > * > > Instead of creating a new path along both circles with: > > > *r := p -- reverse q -- cycle ;* > > It would be nice to have something like: > > *fill p excluding q ;* > > or something like that. > > I mainly have use-cases for differences in shapes, but filling the > intersection of two shapes would be the same idea. > > Thanks, > Adam > > > On Wed, Aug 14, 2019 at 10:57 AM Hans Hagen <j.ha...@xs4all.nl> wrote: > > > Hi, > > > > In the process of providing an additional (more abstract) interface to > > some of the old and also new MetaFun code we wonder what kind of > > features users would like to see. > > > > http://www.pragma-ade.com/general/magazines/mag-1104-mkiv.pdf > > > > As a teaser I uploaded a MyWay document that shows some of what is > > coming. All is experimental but it shows the direction. We're talking > > ConTeXt LMTX here. For instance, > > > > draw lmt_outline [ > > content = "hello", > > kind = "reverse", > > fillcolor = "darkred", > > drawcolor = "darkblue", > > rulethickness = 1/2, > > ] ysized h shifted (3.75h,-1.25h) ; > > > > Wraps all the outline drawing in one macro with a set of options (there > > will be xml interface definitions for that). Or take: > > > > draw lmt_followtext [ > > content = "How well does it work {\bf 1}! ", > > path = (fullcircle scaled 4cm), > > trace = true, > > spread = true, > > ] ysized 5cm ; > > > > which is an easier interface to text along a curve. Arrows can be drawn > > with > > > > draw lmt_arrow [ > > kind = "draw", > > location = "middle", > > alternative = "curved", > > path = fullcircle > > scaled 3cm > > shifted (3.5cm,0cm), > > ] withcolor "darkblue" ; > > > > but of course the low level interface with its many variables for > > tweaking stays around. Other examples are shown in the mentioned document. > > > > So the question is: What do you miss in metapost support? Of course it > > should fit within the concept, so 'artistic freehand drawings' is not > > something that is likely to get interfaced. We are particularly > > interested in educational applications, if only because ConTeXt started > > out that way. > > > > Hans > > > > > > > > ----------------------------------------------------------------- > > Hans Hagen | PRAGMA ADE > > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > > tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl > > ----------------------------------------------------------------- > > > > ___________________________________________________________________________________ > > If your question is of interest to others as well, please add an entry to > > the Wiki! > > > > maillist : ntg-context@ntg.nl / > > http://www.ntg.nl/mailman/listinfo/ntg-context > > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > > archive : https://bitbucket.org/phg/context-mirror/commits/ > > wiki : http://contextgarden.net > > > > ___________________________________________________________________________________ > > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
