From: Grigori Goronzy <greg@blackbox>
Date: Sat, 27 Jun 2009 12:26:15 +0000 (+0200)
Subject: Make \fax and \fay animatable.
X-Git-Tag: 0.9.7~89
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c58cd622ea2d2ab54fd56533c57d9995802f7bfd;p=libass

Make \fax and \fay animatable.
---

diff --git a/libass/ass_render.c b/libass/ass_render.c
index 9e1c008..afea67d 100644
--- a/libass/ass_render.c
+++ b/libass/ass_render.c
@@ -929,13 +929,15 @@ static char *parse_tag(ass_renderer_t *render_priv, char *p, double pwr)
     } else if (mystrcmp(&p, "fax")) {
         double val;
         if (mystrtod(&p, &val))
-            render_priv->state.fax = val;
+            render_priv->state.fax =
+                val * pwr + render_priv->state.fax * (1 - pwr);
         else
             render_priv->state.fax = 0.;
     } else if (mystrcmp(&p, "fay")) {
         double val;
         if (mystrtod(&p, &val))
-            render_priv->state.fay = val;
+            render_priv->state.fay =
+                val * pwr + render_priv->state.fay * (1 - pwr);
         else
             render_priv->state.fay = 0.;
     } else if (mystrcmp(&p, "iclip")) {