diff options
Diffstat (limited to 'Build/source/texk/web2c/mplibdir/pngout.w')
| -rw-r--r-- | Build/source/texk/web2c/mplibdir/pngout.w | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/Build/source/texk/web2c/mplibdir/pngout.w b/Build/source/texk/web2c/mplibdir/pngout.w index 1b725d0575f..b42bf7b3219 100644 --- a/Build/source/texk/web2c/mplibdir/pngout.w +++ b/Build/source/texk/web2c/mplibdir/pngout.w @@ -468,13 +468,14 @@ void mp_png_text_out (MP mp, mp_text_object *p) { cairo_fill(mp->png->cr); } wd = mp_get_char_dimension (mp, mp->font_name[fn], k, 'w'); - /* wd/100 is the size in PS point , ie wd =100*real_wd */ - /* but _without_ considering scaling. */ - /* We have a scale factor of */ - /* (ds/1000.0)*scf */ - /* so to match the scale wd should be */ - /* 1000*real_wd *scf /(ds *scf) */ - /* i.e. 10*wd/ds */ +/* $wd/100$ is the size in PS point , i.e, $wd =100\cdot real\_wd$ + but without considering scaling. + We have a scale factor of + $(ds/1000.0)\cdot scf$ + so to match the scale wd should be + $1000\cdot real_wd\cdot scf /(ds\cdot scf)$ + i.e. $wd = 10\cdot wd/ds$. +*/ wd *= 10.0/ds; cairo_translate(mp->png->cr,wd,0); } @@ -483,7 +484,7 @@ void mp_png_text_out (MP mp, mp_text_object *p) { @ When stroking a path with an elliptical pen, it is necessary to transform the coordinate system so that a unit circular pen will have the desired shape. -To keep this transformation local, we enclose it in a $$\&{<g>}\ldots\&{</g>}$$ +To keep this transformation local, we enclose it in a $$\&{\<g>}\ldots\&{\</g>}$$ block. Any translation component must be applied to the path being stroked while the rest of the transformation must apply only to the pen. If |fill_also=true|, the path is to be filled as well as stroked so we must |