Hi Dalyong, > I’d like to use the following code. > > pic := image(origin--(2u,0)--(3u,u); (3u,0)--(4u,0););
You won’t be able to use that code, because the syntax is wrong. The image must contain drawing commands, but in your code it only contains paths. I’m not sure what you want. Your original example made an image and colored white over part of the path. It doesn’t look great. It can be improved by making the white pen bigger: pic := image(draw p; draw q withpen pencircle scaled 0.6 withcolor white;); I’m not sure this gives what you want at the ends, but it certainly hides part of the path. Mikael’s solution is neat because he doesn’t just hide part of the path, he makes a new path with that part completely removed. If you name that path, you can do whatever you want with it — draw it, scale it, put it in an image() command, etc. \startMPpage[offset=1DK] path p,pM; % pM will be Mikael’s path numeric u; u:= 1cm; p := origin--(2u,0)--(3u,u)--(3u,0)--(4u,0); pM := subpath (0,2) of p && subpath (3,4) of p ; % Mikael's path has two disconnected pieces! draw pM ; \stopMPpage If neither of those is what you need, please provide an example that shows more of what you are trying to do. Gavin ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________
