Hi David,
I have noticed that when I code in SMIL that I have to break the tags
into 2 categories, depending on whether they will cycle. By that I mean,
rotate, skew, translate, and scale will cycle, but all other SMIL tags
will only cycle if they reference a tag that cycles. For example, if you
try to use a set attribute on opacity to blink a light, the light will
not blink unless you reference it to a tag that will cycle such as scale
(<set> won't cycle). Is this by intent? If it is, then I wouldn't say
that SMIL passes as a declarative language. You could call the animation
tags declarative, or maybe you could call the other tags a declarative
markup.
For example, this will not blink.
<set attributeName="opacity" id="sa_g2_0_f0" to="0" dur="6s"
begin="0s; sa_g2_0_f2.end"/>
<set attributeName="opacity" id="sa_g2_0_f2" to="1"
begin="6s; sa_g2_0_f0.end" dur="6s"/>
But, this will blink.
<set attributeName="opacity" id="sa_g2_0_f0" to="0" dur="6s"
begin="0s; scl_g2_0_f3.end"/>
<set attributeName="opacity" id="sa_g2_0_f2" to="1"
begin="6s; scl_g2_0_f3.end+6s" dur="6s"/>
<g id="scl_g2_0" parnt_nod="g2_0">
<use x="0" y="0" id="us_g2_0" width="1000" height="1000"
xlink:href="#g2_sprt"/>
<animateTransform attributeName="transform" attributeType="XML"
type="scale"
fill="remove" repeatCount="1"
begin="0s; scl_g2_0_f3.end" dur="6s" id="scl_g2_0_f0"
from="0.6" to="0.15"/>
<animateTransform attributeName="transform" attributeType="XML"
type="scale"
fill="remove" repeatCount="1"
begin="6s; scl_g2_0_f3.end+6s" dur="3s" id="scl_g2_0_f2"
bgn_scl_nmbr="0.15"
from="0.15" to="0.3" />
<animateTransform attributeName="transform" attributeType="XML"
type="scale"
fill="remove" repeatCount="1" begin="9s; scl_g2_0_f2.end" dur="3s"
id="scl_g2_0_f3" from="0.3" to="0.6" />
</g>
Best Regards,
Joe
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