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class Motion : TypedValues

Contains the picture of a view through a transition and is used to interpolate it. During a transition every view has a MotionController which drives its position.

All parameter which affect a views motion are added to MotionController and then setup() builds out the splines that control the view.

Summary

Constants
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int

Public constructors

Public functions
Unit
Int
buildKeyFrames(keyFrames: FloatArray!, mode: IntArray!, pos: IntArray!)
Unit
buildPath(points: FloatArray!, pointCount: Int)

Fills the array point with the center coordinates. point[0] is filled with the x coordinate of "time" 0.0 mPoints[point.length-1] is filled with the y coordinate of "time" 1.0
Unit
buildRect(p: Float, path: FloatArray!, offset: Int)
String!

Returns the id of the view to move relative to.
Unit
getCenter(p: Double, pos: FloatArray!, vel: FloatArray!)
Float
Float
Unit
getDpDt(
    position: Float,
    locationX: Float,
    locationY: Float,
    mAnchorDpDt: FloatArray!
)

This returns the differential with respect to the animation layout position (Progress) of a point on the view (post layout effects are not computed)
Int
Float

get the width of the widget at the end of the movement.
Float

get the width of the widget at the end of the movement.
Float

get the left most position of the widget at the end of the movement.
Float

get the top most position of the widget at the end of the movement.
Int
getId(name: String!)
MotionPaths!

provides access to MotionPath objects
Int
getKeyFrameInfo(type: Int, info: IntArray!)

Gets the keyFrames for the view controlled by this MotionController.
Int

Get the keyFrames for the view controlled by this MotionController
Float

The values set in motion: { stagger: '2' }
Float

get the width of the widget at the start of the movement.
Float

get the width of the widget at the start of the movement.
Float

get the left most position of the widget at the start of the movement.
Float

get the top most position of the widget at the start of the movement.
Int

Get the view to pivot around
MotionWidget!
Boolean
interpolate(
    child: MotionWidget!,
    globalPosition: Float,
    time: Long,
    keyCache: KeyCache!
)

The main driver of interpolation
Unit
setDrawPath(debugMode: Int)
Unit
Unit
setIdString(stringId: String!)
Unit
Unit
setStaggerOffset(staggerOffset: Float)

set the offset used in calculating stagger launches
Unit
setStaggerScale(staggerScale: Float)

Set stagger scale
Unit
Unit
setStartState(
    rect: ViewState!,
    v: MotionWidget!,
    rotation: Int,
    preWidth: Int,
    preHeight: Int
)
Unit
setTransformPivotTarget(transformPivotTarget: Int)

Set a view to pivot around
Boolean
setValue(id: Int, value: Boolean)

Used to set boolean values
Boolean
setValue(id: Int, value: Float)

Used to set float values
Boolean
setValue(id: Int, value: Int)

Used to set integer values
Boolean
setValue(id: Int, value: String!)

Used to set String values
Unit
Unit
setup(
    parentWidth: Int,
    parentHeight: Int,
    transitionDuration: Float,
    currentTime: Long
)

Called after all TimePoints &Cycles have been added; Spines are evaluated
Unit
setupRelative(motionController: Motion!)

set up the motion to be relative to this other motionController
String!

Debug string

Public properties
String!

Inherited Constants
From androidx.constraintlayout.core.motion.utils.TypedValues
const Int
const Int
const Int
const Int
const String!
S_CUSTOM = "CUSTOM"
const Int
const Int

Constants

DRAW_PATH_AS_CONFIGURED

Added in 1.1.1
const val DRAW_PATH_AS_CONFIGURED = 4: Int

DRAW_PATH_BASIC

Added in 1.1.1
const val DRAW_PATH_BASIC = 1: Int

DRAW_PATH_CARTESIAN

Added in 1.1.1
const val DRAW_PATH_CARTESIAN = 3: Int

DRAW_PATH_NONE

Added in 1.1.1
const val DRAW_PATH_NONE = 0: Int

DRAW_PATH_RECTANGLE

Added in 1.1.1
const val DRAW_PATH_RECTANGLE = 5: Int

DRAW_PATH_RELATIVE

Added in 1.1.1
const val DRAW_PATH_RELATIVE = 2: Int

DRAW_PATH_SCREEN

Added in 1.1.1
const val DRAW_PATH_SCREEN = 6: Int

HORIZONTAL_PATH_X

Added in 1.1.1
const val HORIZONTAL_PATH_X = 2: Int

HORIZONTAL_PATH_Y

Added in 1.1.1
const val HORIZONTAL_PATH_Y = 3: Int

PATH_PERCENT

Added in 1.1.1
const val PATH_PERCENT = 0: Int

PATH_PERPENDICULAR

Added in 1.1.1
const val PATH_PERPENDICULAR = 1: Int

ROTATION_LEFT

Added in 1.1.1
const val ROTATION_LEFT = 2: Int

ROTATION_RIGHT

Added in 1.1.1
const val ROTATION_RIGHT = 1: Int

VERTICAL_PATH_X

Added in 1.1.1
const val VERTICAL_PATH_X = 4: Int

VERTICAL_PATH_Y

Added in 1.1.1
const val VERTICAL_PATH_Y = 5: Int

Public constructors

Motion

Added in 1.1.1
Motion(view: MotionWidget!)

Public functions

addKey

Added in 1.1.1
fun addKey(key: MotionKey!): Unit

buildKeyFrames

Added in 1.1.1
fun buildKeyFrames(keyFrames: FloatArray!, mode: IntArray!, pos: IntArray!): Int

buildPath

Added in 1.1.1
fun buildPath(points: FloatArray!, pointCount: Int): Unit

Fills the array point with the center coordinates. point[0] is filled with the x coordinate of "time" 0.0 mPoints[point.length-1] is filled with the y coordinate of "time" 1.0

Parameters
points: FloatArray!

array to fill (should be 2x the number of mPoints

buildRect

Added in 1.1.1
fun buildRect(p: Float, path: FloatArray!, offset: Int): Unit

getAnimateRelativeTo

Added in 1.1.1
fun getAnimateRelativeTo(): String!

Returns the id of the view to move relative to. The position at the start and then end will be viewed relative to this view -1 is the return value if NOT in polar mode

Returns
String!

the view id of the view this is in polar mode to or -1 if not in polar

getCenter

Added in 1.1.1
fun getCenter(p: Double, pos: FloatArray!, vel: FloatArray!): Unit

getCenterX

Added in 1.1.1
fun getCenterX(): Float

getCenterY

Added in 1.1.1
fun getCenterY(): Float

getDpDt

Added in 1.1.1
fun getDpDt(
    position: Float,
    locationX: Float,
    locationY: Float,
    mAnchorDpDt: FloatArray!
): Unit

This returns the differential with respect to the animation layout position (Progress) of a point on the view (post layout effects are not computed)

Parameters
position: Float

position in time
locationX: Float

the x location on the view (0 = left edge, 1 = right edge)
locationY: Float

the y location on the view (0 = top, 1 = bottom)
mAnchorDpDt: FloatArray!

returns the differential of the motion with respect to the position

getDrawPath

Added in 1.1.1
fun getDrawPath(): Int

getFinalHeight

Added in 1.1.1
fun getFinalHeight(): Float

get the width of the widget at the end of the movement.

Returns
Float

the height at the end

getFinalWidth

Added in 1.1.1
fun getFinalWidth(): Float

get the width of the widget at the end of the movement.

Returns
Float

the width at the end

getFinalX

Added in 1.1.1
fun getFinalX(): Float

get the left most position of the widget at the end of the movement.

Returns
Float

the left most position

getFinalY

Added in 1.1.1
fun getFinalY(): Float

get the top most position of the widget at the end of the movement. Positive is down.

Returns
Float

the top most position

getId

Added in 1.1.1
fun getId(name: String!): Int

getKeyFrame

Added in 1.1.1
fun getKeyFrame(i: Int): MotionPaths!

provides access to MotionPath objects

getKeyFrameInfo

Added in 1.1.1
fun getKeyFrameInfo(type: Int, info: IntArray!): Int

Gets the keyFrames for the view controlled by this MotionController. The info data structure is of the form 0 length if your are at index i the [i+len+1] is the next entry 1 type 1=Attributes, 2=Position, 3=TimeCycle 4=Cycle 5=Trigger 2 position 3 x location 4 y location 5 ... length

Parameters
info: IntArray!

is a data structure array of int that holds info on each keyframe
Returns
Int

Number of keyFrames found

getKeyFramePositions

Added in 1.1.1
fun getKeyFramePositions(type: IntArray!, pos: FloatArray!): Int

Get the keyFrames for the view controlled by this MotionController

Parameters
type: IntArray!

is position(0-100) + 1000 * mType(1=Attributes, 2=Position, 3=TimeCycle 4=Cycle 5=Trigger
pos: FloatArray!

the x&y position of the keyFrame along the path
Returns
Int

Number of keyFrames found

getMotionStagger

Added in 1.1.1
fun getMotionStagger(): Float

The values set in motion: { stagger: '2' }

Returns
Float

value from motion: { stagger: ? } or NaN if not set

getStartHeight

Added in 1.1.1
fun getStartHeight(): Float

get the width of the widget at the start of the movement.

Returns
Float

the height at the start

getStartWidth

Added in 1.1.1
fun getStartWidth(): Float

get the width of the widget at the start of the movement.

Returns
Float

the width at the start

getStartX

Added in 1.1.1
fun getStartX(): Float

get the left most position of the widget at the start of the movement.

Returns
Float

the left most position

getStartY

Added in 1.1.1
fun getStartY(): Float

get the top most position of the widget at the start of the movement. Positive is down.

Returns
Float

the top most position

getTransformPivotTarget

Added in 1.1.1
fun getTransformPivotTarget(): Int

Get the view to pivot around

Returns
Int

id of view or UNSET if not set

getView

Added in 1.1.1
fun getView(): MotionWidget!

interpolate

Added in 1.1.1
fun interpolate(
    child: MotionWidget!,
    globalPosition: Float,
    time: Long,
    keyCache: KeyCache!
): Boolean

The main driver of interpolation

Returns
Boolean

do you need to keep animating

setDrawPath

Added in 1.1.1
fun setDrawPath(debugMode: Int): Unit

setEnd

Added in 1.1.1
fun setEnd(mw: MotionWidget!): Unit

setIdString

Added in 1.1.1
fun setIdString(stringId: String!): Unit

setPathMotionArc

Added in 1.1.1
fun setPathMotionArc(arc: Int): Unit

setStaggerOffset

Added in 1.1.1
fun setStaggerOffset(staggerOffset: Float): Unit

set the offset used in calculating stagger launches

Parameters
staggerOffset: Float

fraction of progress before this controller runs

setStaggerScale

Added in 1.1.1
fun setStaggerScale(staggerScale: Float): Unit

Set stagger scale

setStart

Added in 1.1.1
fun setStart(mw: MotionWidget!): Unit

setStartState

Added in 1.1.1
fun setStartState(
    rect: ViewState!,
    v: MotionWidget!,
    rotation: Int,
    preWidth: Int,
    preHeight: Int
): Unit

setTransformPivotTarget

Added in 1.1.1
fun setTransformPivotTarget(transformPivotTarget: Int): Unit

Set a view to pivot around

Parameters
transformPivotTarget: Int

id of view

setValue

Added in 1.1.1
fun setValue(id: Int, value: Boolean): Boolean

Used to set boolean values

Returns
Boolean

true if it accepted the value

setValue

Added in 1.1.1
fun setValue(id: Int, value: Float): Boolean

Used to set float values

Returns
Boolean

true if it accepted the value

setValue

Added in 1.1.1
fun setValue(id: Int, value: Int): Boolean

Used to set integer values

Returns
Boolean

true if it accepted the value

setValue

Added in 1.1.1
fun setValue(id: Int, value: String!): Boolean

Used to set String values

Returns
Boolean

true if it accepted the value

setView

Added in 1.1.1
fun setView(view: MotionWidget!): Unit

setup

Added in 1.1.1
fun setup(
    parentWidth: Int,
    parentHeight: Int,
    transitionDuration: Float,
    currentTime: Long
): Unit

Called after all TimePoints &Cycles have been added; Spines are evaluated

setupRelative

Added in 1.1.1
fun setupRelative(motionController: Motion!): Unit

set up the motion to be relative to this other motionController

toString

fun toString(): String!

Debug string

Public properties

mId

Added in 1.1.1
val mId: String!
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