InteractionTracker.ScaleVelocityInPercentPerSecond Properti

Definisi

Ruang nama:

Windows.UI.Composition.Interactions

Tingkat perubahan untuk skala.

Properti ScaleVelocityInPercentPerSecond mewakili kecepatan skala InteractionTracker saat ini di Inertia. Mengambil kecepatan posisi InteractionTracker tepat setelah Interaksi terjadi atau mereferensikan kecepatan InteractionTracker terbaru dalam ExpressionAnimation.

public:
 property float ScaleVelocityInPercentPerSecond { float get(); };

float ScaleVelocityInPercentPerSecond();

public float ScaleVelocityInPercentPerSecond { get; }

var single = interactionTracker.scaleVelocityInPercentPerSecond;

Public ReadOnly Property ScaleVelocityInPercentPerSecond As Single

Nilai Properti

Single

float

Tingkat perubahan untuk skala.

Contoh

// Listen for the InertiaStateEntered event
public void InertiaStateEntered(InteractionTracker sender, 	InteractionTrackerInertiaStateEnteredArgs args)
{
  // Grab the Scale velocity out of the args when the event is fired. 
  float scaleVelocity = args.ScaleVelocityInPercentPerSecond;
}

void CustomSpringMotion(float springCoefficient, float dampingCoefficient, float 	maxScale)
{
  // Create the InertiaModifier that will be a custom motion emulating a spring
  InteractionTrackerInertiaMotion modifier = InteractionTrackerInertiaMotion.Create(_compositor);
  modifier.Condition = _compositor.CreateExpressionAnimation("this.Target.NaturalRestingPosition.X > maxScale");
  modifier.Condition.SetScalarParameter("maxScale", maxScale);

  // Utilize the current Velocity of InteractionTracker in the Expression defining 	the custom spring motion
  modifier.Motion = _compositor.CreateExpressionAnimation("(-springStiffnessCoefficient * (this.Target.Position.X – maxScale)) + " +
    "(-dampingCoefficient * this.target.ScaleVelocityInPercentPerSecond");
  modifier.Motion.SetScalarParameter("springStiffnessCoefficient", springCoefficient);
  modifier.Motion.SetScalarParameter("dampingCoefficient", dampingCoefficient);
  modifier.Motion.SetScalarParameter("maxScale", maxScale);
}

Keterangan

Saat mengakses properti ScaleVelocityInPercentPerSecond dari peristiwa InertiaStateEntered , Anda akan mengambil rekam jepret dari kecepatan terhitung berdasarkan Interaksi. Kejadian ini hanya akan diaktifkan sekali setelah interaksi terjadi.