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<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     class="reftest-wait">
  <title>Test animation of the "numOctaves" &lt;integer&gt; attribute on the "feTurbulence" element</title>
  <script xlink:href="smil-util.js" type="text/javascript"/>

  <!-- This is an unfinished and unused testcase that would not pass given the
       current implementation strategy. This testcase assumes that the
       strategy should be to give each value an equal slice of the simple
       duration. In other words if animating from 1 to 4 in 4 seconds, then
       each of the values 1, 2, 3 and 4 would get 1 second each.

       See the comment in anim-feTurbulence-numOctaves-01.svg for more on
       implementation strategy.
  -->



  <!-- Animation of integers is actually more complicated than lengths. It's
       necessary to "jump" from value to value since you're dealing with
       discrete integers rather than continuous real numbers.

       The spec doesn't say exactly how to behave, but we assume that the each
       of the values in a from-to animation gets an equal slice of the simple
       duration. We also assume that at times that are exactly midway between
       two integers, we should jump to the "next" integer. In other words, when
       animating from 0 to 1 in 1 second, at 0.5 seconds the value changes to
       1; but when animating from 1 to 0 in 1 second, at 0.5 seconds the value
       changes to 0. This is different from floor(), round() or ceil()
       behavior, and we test that by animating both "up" and "down" below.
  -->


  <!-- Some tests animating *up* to higher values. -->

  <!-- Each of the four values should get an equal slice of the duration -
       that is 3.25s - so at 3s the animated value should still be 1. -->
  <filter id="filter_1" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="13s"
               to="4"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect width="20" height="20" filter="url(#filter_1)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 3s - so at exactly 3s the animated value should become 2. -->
  <filter id="filter_2" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="12s"
               to="4"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="20" width="20" height="20" filter="url(#filter_2)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1.25s - so at 3s the animated value should still be 3. -->
  <filter id="filter_3" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="5s"
               to="4"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="40" width="20" height="20" filter="url(#filter_3)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1s - so at exactly 3s the animated value should become 4. -->
  <filter id="filter_4" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="4s"
               to="4"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="60" width="20" height="20" filter="url(#filter_4)"/>


  <!-- Some tests animating *down* to lower values. -->

  <!-- Each of the four values should get an equal slice of the duration -
       that is 3.25s - so at 3s the animated value should still be 4. -->
  <filter id="filter_5" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="13s"
               to="1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect y="20" width="20" height="20" filter="url(#filter_5)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 3s - so at exactly 3s the animated value should become 3. -->
  <filter id="filter_6" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="12s"
               to="1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="20" y="20" width="20" height="20" filter="url(#filter_6)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1.25s - so at 3s the animated value should still be 2. -->
  <filter id="filter_7" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="5s"
               to="1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="40" y="20" width="20" height="20" filter="url(#filter_7)"/>

  <!-- Each of the four values should get an equal slice of the duration -
	   that is 1s - so at exactly 3s the animated value should become 1. -->
  <filter id="filter_8" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="4s"
               to="1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="60" y="20" width="20" height="20" filter="url(#filter_8)"/>


  <!-- Some 'by' animation tests -->

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1.25s - so at 3s the animated value should still be 3. -->
  <filter id="filter_9" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="5s"
               by="3"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect y="40" width="20" height="20" filter="url(#filter_9)"/>

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1s - so at exactly 3s the animated value should become 4. -->
  <filter id="filter_10" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1">
      <animate attributeName="numOctaves"
               calcMode="linear"
               begin="0s" dur="4s"
               by="3"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="20" y="40" width="20" height="20" filter="url(#filter_10)"/>


  <!-- calcMode="paced" tests -->

  <!-- Each of the four values should get an equal slice of the duration -
       that is 1.25s - so at 3s the animated value should still be 2. -->
  <filter id="filter_11" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="paced"
               begin="0s" dur="5s"
               values="4; 3; 1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect y="60" width="20" height="20" filter="url(#filter_11)"/>

  <!-- Each of the four values should get an equal slice of the duration -
	   that is 1s - so at exactly 3s the animated value should become 1. -->
  <filter id="filter_12" x="0%" y="0%" width="100%" height="100%">
    <feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="4">
      <animate attributeName="numOctaves"
               calcMode="paced"
               begin="0s" dur="4s"
               values="4; 3; 1"
               fill="freeze"/>
    </feTurbulence>
  </filter>
  <rect x="20" y="60" width="20" height="20" filter="url(#filter_12)"/>


  <script type="text/javascript">
    function doTest() {
      setTimeAndSnapshot(3, true);
    }
    window.addEventListener("MozReftestInvalidate", doTest, false);
  </script>
</svg>