diff options
Diffstat (limited to 'metapost')
| -rw-r--r-- | metapost/context/base/mp-chem.mpiv | 61 |
1 files changed, 44 insertions, 17 deletions
diff --git a/metapost/context/base/mp-chem.mpiv b/metapost/context/base/mp-chem.mpiv index 6739dcaf7..2c9f8f327 100644 --- a/metapost/context/base/mp-chem.mpiv +++ b/metapost/context/base/mp-chem.mpiv @@ -32,7 +32,7 @@ numeric chem_front_b[] ; boolean - chem_setting_axis, chem_setting_fitwidth, chem_setting_fitheight, + chem_setting_axis, %chem_setting_fitwidth, chem_setting_fitheight, chem_doing_pb, chem_text_trace, chem_bd_wedge, chem_star[], chem_front[], chem_stacked[], chem_tetra[] ; @@ -302,17 +302,26 @@ chem_init_all ; % WHY does this not work unless defined and then called? % unless of course the error be too harmful... % \startchemical -def chem_start_structure(expr i, l, r, t, b, scale, rotation, fitwidth, fitheight, +def chem_start_structure(expr i, l, r, t, b, scale, rotation, %fitwidth, fitheight, emwidth, offset, axis, rulethickness, axiscolor) = chem_emwidth := emwidth ; % EmWidth or \the\emwidth does not work... chem_b_length := if scale<>0: scale* fi 3chem_emwidth ; - chem_setting_fitwidth := if boolean fitwidth : fitwidth else : (fitwidth<>0) fi ; - chem_setting_fitheight := if boolean fitheight : fitheight else : (fithheight<>0) fi ;; - chem_setting_l := l * chem_b_length ; - chem_setting_r := r * chem_b_length ; - chem_setting_t := t * chem_b_length ; - chem_setting_b := b * chem_b_length ; +% chem_setting_fitwidth := if boolean fitwidth : fitwidth else : (fitwidth<>0) fi ; +% chem_setting_fitheight := if boolean fitheight : fitheight else : (fithheight<>0) fi ;; + save chem_setting_l, chem_setting_r, chem_setting_t, chem_setting_b ; + if numeric l : + chem_setting_l := l * chem_b_length ; + fi + if numeric r : + chem_setting_r := r * chem_b_length ; + fi + if numeric t : + chem_setting_t := t * chem_b_length ; + fi + if numeric b : + chem_setting_b := b * chem_b_length ; + fi chem_setting_rotation := rotation ; chem_setting_offset := offset ; chem_setting_axis := if boolean axis : axis else : (axis<>0) fi ; @@ -333,18 +342,36 @@ vardef chem_stop_structure = endfor currentpicture := (currentpicture shifted -chem_origin) rotated chem_setting_rotation ; - % axis here - if chem_setting_fitwidth : - chem_setting_l := - xpart llcorner currentpicture ; - chem_setting_r := xpart urcorner currentpicture ; - fi ; - if chem_setting_fitheight : - chem_setting_t := ypart urcorner currentpicture ; - chem_setting_b := - ypart llcorner currentpicture ; - fi ; + if (not known chem_setting_l) and (not known chem_setting_r) : + chem_setting_l := - xpart llcorner currentpicture ; + chem_setting_r := xpart urcorner currentpicture ; + else : + if not known chem_setting_l : + chem_setting_l := xpart urcorner currentpicture - xpart llcorner currentpicture + - 2chem_setting_r ; + fi + if not known chem_setting_r : + chem_setting_r := xpart urcorner currentpicture - xpart llcorner currentpicture + - 2chem_setting_l ; + fi + fi + if (not known chem_setting_t) and (not known chem_setting_b) : + chem_setting_t := ypart urcorner currentpicture ; + chem_setting_b := - ypart llcorner currentpicture ; + else : + if not known chem_setting_t : + chem_setting_t := ypart urcorner currentpicture - ypart llcorner currentpicture + - 2chem_setting_b ; + fi + if not known chem_setting_b : + chem_setting_b := ypart urcorner currentpicture - ypart llcorner currentpicture + - 2chem_setting_t ; + fi + fi chem_setting_bbox := (-chem_setting_l,-chem_setting_b) -- ( chem_setting_r,-chem_setting_b) -- ( chem_setting_r, chem_setting_t) -- (-chem_setting_l, chem_setting_t) -- cycle ; + if chem_setting_axis : % put it behind the picture chem_pic := currentpicture ; currentpicture := nullpicture ; chem_num0 := .5chem_b_length ; |