Class DragGesture.DampingMotionStrategy

Namespace

Lime

Assembly

Lime.dll

Motion damping based on Gauss error function. Duration is calculated so motion lasts until min speed reached.

public class DragGesture.DampingMotionStrategy : DragGesture.IMotionStrategy

Inheritance

object

DragGesture.DampingMotionStrategy

Implements

DragGesture.IMotionStrategy

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Constructors

DampingMotionStrategy(float, float, float, float)

public DampingMotionStrategy(float dampingFactor1, float dampingFactor2, float minSpeed = 25, float maxStartSpeed = Infinity)

Parameters

dampingFactor1 float

Initial speed damping factor. Should be in range (0; 1]. The lower the dampingFactor2, the lower damingFactor1 can be. Otherwise it may result in overflow.

dampingFactor2 float

Damping factor applied to speed damping factor each frame. Valid range is (0; 1).

minSpeed float

The minimum speed that is considered a full stop.

maxStartSpeed float

Maximum initial speed of movement.

Properties

Duration

public float Duration { get; }

Property Value

float

Position

public Vector2 Position { get; }

Property Value

Vector2

Methods

Start(Vector2, IEnumerable<(Vector2 Distance, float Duration)>)

Start position calculation.

public bool Start(Vector2 startPosition, IEnumerable<(Vector2 Distance, float Duration)> touchHistory)

Parameters

startPosition Vector2

The position motion should begin at.

touchHistory IEnumerable<(Vector2 Distance, float Duration)>

Sequence of distance and duration pairs for a couple of last frames.

Returns

bool

Update(float)

Recalculates position.

public void Update(float time)

Parameters

time float

Time elapsed from the start.