Blend an input. This is only useful for nodes created for an [AnimationNodeBlendTree]. The [code]time[/code] parameter is a relative delta, unless [code]seek[/code] is [code]true[/code], in which case it is absolute. A filter mode may be optionally passed (see [enum FilterAction] for options).
Gets the property information for parameter. Parameters are custom local memory used for your nodes, given a resource can be reused in multiple trees. Format is similar to [method Object.get_property_list].
</description>
</method>
<methodname="has_filter"qualifiers="virtual">
<returntype="String"/>
<description>
Returns [code]true[/code] whether you want the blend tree editor to display filter editing on this node.
</description>
</method>
<methodname="is_path_filtered"qualifiers="const">
<returntype="bool"/>
<argumentindex="0"name="path"type="NodePath"/>
<description>
Returns whether the given path is filtered.
</description>
</method>
<methodname="process"qualifiers="virtual">
<returntype="void"/>
<argumentindex="0"name="time"type="float"/>
<argumentindex="1"name="seek"type="bool"/>
<description>
User-defined callback called when a custom node is processed. The [code]time[/code] parameter is a relative delta, unless [code]seek[/code] is [code]true[/code], in which case it is absolute.
Here, call the [method blend_input], [method blend_node] or [method blend_animation] functions. You can also use [method get_parameter] and [method set_parameter] to modify local memory.
This function should return the time left for the current animation to finish (if unsure, pass the value from the main blend being called).
Emitted by nodes that inherit from this class and that have an internal tree when one of their nodes changes. The nodes that emit this signal are [AnimationNodeBlendSpace1D], [AnimationNodeBlendSpace2D], [AnimationNodeStateMachine], and [AnimationNodeBlendTree].
