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Diffstat (limited to 'macros/luatex/optex/graphics.opm')
| -rw-r--r-- | macros/luatex/optex/graphics.opm | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/macros/luatex/optex/graphics.opm b/macros/luatex/optex/graphics.opm new file mode 100644 index 0000000000..2ce9ba7634 --- /dev/null +++ b/macros/luatex/optex/graphics.opm @@ -0,0 +1,49 @@ +%% This is part of OpTeX project, see http://petr.olsak.net/optex + +\_codedecl \inspic {Graphics <2020-02-29>} + + \_doc ----------------------------- + `\inspic` accepts old syntax `\inspic <filename><space>` + or new syntax `\inspic{<filename>}`. So, we need to define + two auxiliary macros `\_inspicA` and `\_inspicB`. + + You can include more `\pdfximage` parameters (like `page=`) + in the `\_picparams` macro. + + All `\inspic` macros are surrounded in `\hbox` in order user can + write `\moveright\inspic ...` or something similar. + \_cod \_fin ----------------------- + +\_def\_inspic{\hbox\bgroup\_isnextchar\_bgroup\_inspicB\_inspicA} +\_def\_inspicA #1 {\_inspicB {#1}} +\_def\_inspicB #1{% + \_pdfximage \_ifdim\_picwidth=0pt \_else width\_picwidth\_fi + \_ifdim\_picheight=0pt \_else height\_picheight\_fi + \_picparams {\_the\_picdir#1}% + \_pdfrefximage\_pdflastximage\egroup} + +\_def\_picparams{} + +\_public \inspic ; + + \_doc ---------------------------- + `\pdfscale` and `\pdfrotate` macros are implemented by `\pdfsetmatrix` + primitive. or rotating we need to knos values of sin, cos function. + We use Lua code for this. + \_cod ---------------------------- + +\_def\_pdfscale#1#2{\_pdfsetmatrix{#1 0 0 #2}} + +\_def\_gonfunc#1#2{% + \_directlua{tex.print(string.format('\_pcent.4f',math.#1(3.14159265*(#2)/180)))}% +} +\_def\_sin{\_gonfunc{sin}} +\_def\_cos{\_gonfunc{cos}} + +\_def\_pdfrotate#1{\_pdfsetmatrix{\_cos{#1} \_sin{#1} \_sin{(#1)-180} \_cos{#1}}} + +\_public \pdfscale \pdfrotate ; + +\_endcode % ------------------------------------- + + |