PathMotion

Artifact: androidx.transition:transition

Added in 1.0.0

Kotlin |Java

public abstract class PathMotion

Known direct subclasses

ArcMotion, PatternPathMotion

`ArcMotion`	A PathMotion that generates a curved path along an arc on an imaginary circle containing the two points.
`PatternPathMotion`	A PathMotion that takes a Path pattern and applies it to the separation between two points.

This base class can be extended to provide motion along a Path to Transitions.

Transitions such as android.transition.ChangeBounds move Views, typically in a straight path between the start and end positions. Applications that desire to have these motions move in a curve can change how Views interpolate in two dimensions by extending PathMotion and implementing getPath.

This may be used in XML as an element inside a transition.

<changeBounds>
    <pathMotion class="my.app.transition.MyPathMotion"/>
</changeBounds>

Summary

Public constructors
`PathMotion()`
`PathMotion(@NonNull Context context, @NonNull AttributeSet attrs)`

Public methods
`abstract @NonNull Path`	`getPath(float startX, float startY, float endX, float endY)` Provide a Path to interpolate between two points `(startX, startY)` and `(endX, endY)`.

Public constructors

PathMotion

Added in 1.0.0

public PathMotion()

PathMotion

Added in 1.0.0

public PathMotion(@NonNull Context context, @NonNull AttributeSet attrs)

Public methods

getPath

Added in 1.0.0

public abstract @NonNull Path getPath(float startX, float startY, float endX, float endY)

Provide a Path to interpolate between two points (startX, startY) and (endX, endY). This allows controlled curved motion along two dimensions.

Parameters
`float startX`	The x coordinate of the starting point.
`float startY`	The y coordinate of the starting point.
`float endX`	The x coordinate of the ending point.
`float endY`	The y coordinate of the ending point.

Returns
`@NonNull Path`	A Path along which the points should be interpolated. The returned Path must start at point `(startX, startY)`, typically using `moveTo` and end at `(endX, endY)`.