Documentation Center public:dson_spec:object_definitions:channel_animation
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2026-04-22T07:56:50+00:00Documentation Center
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/public/dson_spec/object_definitions/channel_animation/start
<h1 id="channel_animation">channel_animation</h1>
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<h2 id="description">Description</h2>
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<p>
Defines an animation sequence for a single channel.
</p>
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<h2 id="parent_objects">Parent Objects</h2>
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<ul>
<li class="level1"><div class="li"> <a href="/public/dson_spec/object_definitions/scene/start" class="wikilink1" title="public:dson_spec:object_definitions:scene:start">scene</a></div>
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</ul>
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<h2 id="properties">Properties</h2>
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<div class="table sectionedit1"><table class="inline">
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<td class="col0"> <strong>Name</strong> </td><td class="col1"> <strong>Description</strong> </td><td class="col2"> <strong>Default</strong> </td><td class="col3"> <strong>Required</strong> </td>
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<td class="col0"> url </td><td class="col1"> A string representing the <abbr title="Uniform Resource Identifier">URI</abbr> referring to the channel to target with this animation. </td><td class="col2"> None </td><td class="col3"> yes </td>
</tr>
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<td class="col0"> keys </td><td class="col1"> An array of time/value pairs, with an optional nested array that defines an interpolation type and its associated values (if any), one for each keyframe. </td><td class="col2"> None </td><td class="col3"> yes </td>
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<h2 id="details">Details</h2>
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<p>
Keys must appear in order of ascending time. The number of values specified for each key must match the number of components of the property specified in the <em>url</em>. To provide animation data for a single component of a multi-component property, use the sub-property selector syntax (see <a href="/public/dson_spec/format_description/asset_addressing/start" class="wikilink1" title="public:dson_spec:format_description:asset_addressing:start">Asset Addressing</a>) to specify which component is desired, then provide the number of values required to specify a value for keys of that type.
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<p>
The assumed key interpolation type is Catmull-Rom Spline Tangent for float channels and Linear for all others.
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<h2 id="example">Example</h2>
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<p>
A vector or color value:
</p>
<pre class="code">{
"url" : "hips#translation",
"keys" : [ [ 0.0, [1.23, 2.34, 4.55] ], [ 1.0, [6.78, 5.23, 1.90] ] ]
}</pre>
<p>
A float value:
</p>
<pre class="code">{
"url" : "hips#translation/x",
"keys" : [ [ 0.0, 1.23 ], [ 1.0, 6.78 ] ]
}</pre>
<p>
A float including the optional interpolation type/value array:
</p>
<pre class="code">{
"url" : "hips#translation/x",
"keys" : [ [ 0.0, 1.23, ["TCB", -0.5, 0.2, 0.5] ], [ 1.0, 6.78, ["LINEAR"] ] ]
}</pre>
<p>
An alternate float including the optional interpolation type/value array:
</p>
<pre class="code">{
"url" : "Dress:#Morph_001?value/value",
"keys" : [ [ 0.5666667, 1, ["HERMITE", 0,0 ] ], [ 0.6, 0, ["CONST"] ] ]
}</pre>
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