com.facebook.litho.dataflow

Class MappingNode

java.lang.Object

com.facebook.litho.dataflow.ValueNode

com.facebook.litho.dataflow.MappingNode

public class MappingNode
extends ValueNode

A ValueNode that will update its value from its "initial" input to its "end" input according to the given input within expected range [0, 1]. For example MappingNode could accept values emmited by InterpolatorNode. The node can also extrapolate beyond the output range if input goes beyond the expected input range.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	END_INPUT
static java.lang.String	INITIAL_INPUT

Fields inherited from class com.facebook.litho.dataflow.ValueNode

DEFAULT_INPUT

Constructor Summary

Constructors

Constructor and Description
MappingNode()

Method Summary

Modifier and Type	Method and Description
protected float	calculateValue(long frameTimeNanos) This node should calculate and set a new value based on frame time and its parents (the nodes it depends on).

Methods inherited from class com.facebook.litho.dataflow.ValueNode

getInput, getInput, getValue, hasInput, hasInput, setValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INITIAL_INPUT

public static final java.lang.String INITIAL_INPUT

See Also:

Constant Field Values

END_INPUT

public static final java.lang.String END_INPUT

See Also:

Constant Field Values

Constructor Detail

MappingNode

public MappingNode()

Method Detail

calculateValue

protected float calculateValue(long frameTimeNanos)

Description copied from class: ValueNode

This node should calculate and set a new value based on frame time and its parents (the nodes it depends on). When this is called, it's guaranteed that the parent nodes have already been updated for this frame.

Specified by:

calculateValue in class ValueNode