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| author | wm4 <wm4@nowhere> | 2013-10-24 13:04:48 +0200 |
|---|---|---|
| committer | wm4 <wm4@nowhere> | 2013-10-24 13:04:48 +0200 |
| commit | 516f0eadac78255df58368d2c9cb9b200ae0ff64 (patch) | |
| tree | e94315a754ea1f15c5a3fdd9b300702d37cbd0cd | |
| parent | dacfe5efa293b6e0d41a8b3154626a9fa54c2ffa (diff) | |
| download | libass-516f0eadac78255df58368d2c9cb9b200ae0ff64.tar.bz2 libass-516f0eadac78255df58368d2c9cb9b200ae0ff64.tar.xz | |
Reset text origin on \fay changes for VSFilter compatibility
Comparing this rendering of this line:
{\fnTahoma\c&H000000&\fs100\an7\fay0.115\pos(240,250)}——————–>{\fay0.0}——>
To this line:
{\fnTahoma\c&H000000&\fs100\an7\fay0.0\pos(240,250)}——————–>{\fay0.0}——>
The second arrow is in the same place for both lines when using
VSFilter, but the origin of the second shear is different when using
libass.
After every change in \fay or a newline, the vertical offset resets
to 0.
Fixes issue #80. Bug report and patch by BwackNinja (BwackNi...@gmail.com)
(this commit corresponds to the patch issue_80_3.patch)
| -rw-r--r-- | libass/ass_render.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index 78fd003..3923e52 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -1962,16 +1962,23 @@ ass_render_event(ASS_Renderer *render_priv, ASS_Event *event, pen.x = 0; pen.y = 0; int lineno = 1; + double last_pen_x = 0; + double last_fay = 0; for (i = 0; i < text_info->length; i++) { GlyphInfo *info = glyphs + cmap[i]; if (glyphs[i].linebreak) { - pen.y -= (info->fay / info->scale_x * info->scale_y) * pen.x; - pen.x = 0; + pen.y -= (last_fay / info->scale_x * info->scale_y) * (pen.x - last_pen_x); + last_pen_x = pen.x = 0; pen.y += double_to_d6(text_info->lines[lineno-1].desc); pen.y += double_to_d6(text_info->lines[lineno].asc); pen.y += double_to_d6(render_priv->settings.line_spacing); lineno++; } + else if (last_fay != info->fay) { + pen.y -= (last_fay / info->scale_x * info->scale_y) * (pen.x - last_pen_x); + last_pen_x = pen.x; + } + last_fay = info->fay; if (info->skip) continue; FT_Vector cluster_pen = pen; while (info) { |