animate
-The animate element expresses a series of changes (animations) to be applied (targeted) to one or more styling attributes of associated elements.
+The animate element expresses a series of changes (animations) to be applied (targeted)
+to one or more animatable styles of associated elements.
An animate element may appear as either (1) a child of a
content element or a region element,
referred to as inline animation, or
@@ -18651,6 +18663,8 @@ where the list (sequence) of animation values
adhere to the <animation-value-list> syntax, and where each
constituent <animation-value> adheres to the syntax of the specified
attribute.
+Targeting a non-animatable style is
+considered an error and must be ignored for the purpose of presentation processing.
In contrast with , §19.2.12, a single animate element, as defined here, may be used to
perform continuous animations on a set of targeted style attributes instead of being limited to targeting a
@@ -18857,8 +18871,8 @@ defined to be coterminous with the root
set
-The set element expresses one or more a discrete changes (animations) to be applied (targeted) to styling attributes
-of associated elements.
+The set element expresses one or more a discrete changes (animations) to be applied (targeted)
+to one or more animatable styles of associated elements.
A set element may appear as either (1) a child of a
content element or a region element,
referred to as inline animation, or
@@ -18899,6 +18913,8 @@ must specify an xml:id at
Style attributes targeted by a set element are specified directly using
attributes in the TT Style Namespaces or in a namespace that is not some TT Namespace, where the single target animation (key) value
adheres to the <animation-value> syntax.
+Targeting a non-animatable style is
+considered an error and must be ignored for the purpose of presentation processing.
In contrast with , §19.2.13, a single set element, as defined here, may be used to
perform discrete animations on a set of targeted styling attributes instead of being limited to targeting a
From 569932bdac467cea0cdbe0318208f2855351d70b Mon Sep 17 00:00:00 2001
From: Glenn Adams
Date: Thu, 5 Sep 2019 21:15:34 +0800
Subject: [PATCH 2/2] Address
https://github.com/w3c/ttml2/pull/1154#pullrequestreview-284201156 (in part).
---
spec/ttml2.xml | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/spec/ttml2.xml b/spec/ttml2.xml
index ad14dac58..f298264d2 100644
--- a/spec/ttml2.xml
+++ b/spec/ttml2.xml
@@ -18694,6 +18694,12 @@ considered equivalent to specifying attributeName="tts:color"
and <
This implied value corresponds to the default value specified by , §19.2.9.