diff options
Diffstat (limited to 'metapost/context/base/mpxl/mp-func.mpxl')
-rw-r--r-- | metapost/context/base/mpxl/mp-func.mpxl | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/metapost/context/base/mpxl/mp-func.mpxl b/metapost/context/base/mpxl/mp-func.mpxl new file mode 100644 index 000000000..859e6ead3 --- /dev/null +++ b/metapost/context/base/mpxl/mp-func.mpxl @@ -0,0 +1,87 @@ +%D \module +%D [ file=mp-func.mpiv, +%D version=2001.12.29, +%D title=\CONTEXT\ \METAPOST\ graphics, +%D subtitle=function hacks, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See licen-en.pdf for +%C details. + +%D Under construction. + +if known context_func : endinput ; fi ; + +boolean context_func ; context_func := true ; immutable context_func ; + +string mfun_pathconnectors[] ; + +mfun_pathconnectors[0] := "," ; +mfun_pathconnectors[1] := "--" ; +mfun_pathconnectors[2] := ".." ; +mfun_pathconnectors[3] := "..." ; +mfun_pathconnectors[4] := "---" ; + +def pathconnectors = mfun_pathconnectors enddef ; + +vardef mfun_function (expr f) (expr u, t, b, e, s) = + save x ; numeric x ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + for xx := b step s until e : + hide (x := xx ;) + if xx > b : + scantokens(c) + fi + (scantokens(u),scantokens(t)) + endfor +enddef ; + +def function = mfun_function enddef ; % let doesn't work here +def constructedfunction = mfun_function enddef ; +def straightfunction = mfun_function (1) enddef ; +def curvedfunction = mfun_function (2) enddef ; + +% def punkedfunction = mfun_function (1) enddef ; % same as straightfunction +% def tightfunction = mfun_function (3) enddef ; % same as curvedfunction + +vardef mfun_constructedpath (expr f) (text t) = + save ok ; boolean ok ; ok := false ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + for i=t : + if ok : + scantokens(c) + else : + ok := true ; + fi + i + endfor +enddef ; + +def constructedpath = mfun_constructedpath enddef ; % let doesn't work here +def straightpath = mfun_constructedpath (1) enddef ; +def curvedpath = mfun_constructedpath (2) enddef ; + +% def punkedpath = mfun_constructedpath (1) enddef ; % same as straightpath +% def tightpath = mfun_constructedpath (3) enddef ; % same as curvedpath + +vardef mfun_constructedpairs (expr f) (text p) = + save i ; i := -1 ; + save c ; string c ; c := if string f : f else : mfun_pathconnectors[f] fi ; + forever : + exitif unknown p[incr(i)] ; + if i>0 : + scantokens(c) + fi + p[i] + endfor +enddef ; + +def constructedpairs = mfun_constructedpairs enddef ; % let doesn't work here +def straightpairs = mfun_constructedpairs (1) enddef ; +def curvedpairs = mfun_constructedpairs (2) enddef ; + +% def punkedpairs = mfun_constructedpairs (1) enddef ; % same as straightpairs +% def tightpairs = mfun_constructedpairs (3) enddef ; % same as curvedpairs |