juce::AnimatedPositionBehaviours::ContinuousWithMomentum Struct Reference

A non-snapping behaviour that allows the content to be freely flicked in either direction, with momentum based on the velocity at which it was released, and variable friction to make it come to a halt. More...

#include <juce_AnimatedPositionBehaviours.h>

Collaboration diagram for juce::AnimatedPositionBehaviours::ContinuousWithMomentum:

Public Member Functions
	ContinuousWithMomentum ()=default
double	getNextPosition (double oldPos, double elapsedSeconds) noexcept
	Called by the AnimatedPosition class to get the new position, after the given time has elapsed. More...
bool	isStopped (double) const noexcept
	Called by the AnimatedPosition class to check whether the object is now stationary. More...
void	releasedWithVelocity (double, double releaseVelocity) noexcept
	Called by the AnimatedPosition class. More...
void	setFriction (double newFriction) noexcept
	Sets the friction that damps the movement of the value. More...
void	setMinimumVelocity (double newMinimumVelocityToUse) noexcept
	Sets the minimum velocity of the movement. More...

Private Attributes
double	damping = 0.92
double	minimumVelocity = 0.05
double	velocity = 0

Detailed Description

A non-snapping behaviour that allows the content to be freely flicked in either direction, with momentum based on the velocity at which it was released, and variable friction to make it come to a halt.

This class is intended to be used as a template parameter to the AnimatedPosition class.

See also

AnimatedPosition

@tags{GUI}

Constructor & Destructor Documentation

ContinuousWithMomentum()

juce::AnimatedPositionBehaviours::ContinuousWithMomentum::ContinuousWithMomentum ( )

default

Member Function Documentation

getNextPosition()

double juce::AnimatedPositionBehaviours::ContinuousWithMomentum::getNextPosition ( double  oldPos, double  elapsedSeconds  )

inlinenoexcept

Called by the AnimatedPosition class to get the new position, after the given time has elapsed.

References damping, minimumVelocity, and velocity.

isStopped()

bool juce::AnimatedPositionBehaviours::ContinuousWithMomentum::isStopped ( double  ) const

inlinenoexcept

Called by the AnimatedPosition class to check whether the object is now stationary.

References velocity.

releasedWithVelocity()

void juce::AnimatedPositionBehaviours::ContinuousWithMomentum::releasedWithVelocity ( double  , double  releaseVelocity  )

inlinenoexcept

Called by the AnimatedPosition class.

This tells us the position and velocity at which the user is about to release the object. The velocity is measured in units/second.

References velocity.

setFriction()

void juce::AnimatedPositionBehaviours::ContinuousWithMomentum::setFriction ( double  newFriction )

inlinenoexcept

Sets the friction that damps the movement of the value.

A typical value is 0.08; higher values indicate more friction.

References damping.

setMinimumVelocity()

void juce::AnimatedPositionBehaviours::ContinuousWithMomentum::setMinimumVelocity ( double  newMinimumVelocityToUse )

inlinenoexcept

Sets the minimum velocity of the movement.

Any velocity that's slower than this will stop the animation. The default is 0.05.

References minimumVelocity.

Member Data Documentation

damping

double juce::AnimatedPositionBehaviours::ContinuousWithMomentum::damping = 0.92

private

Referenced by getNextPosition(), and setFriction().

minimumVelocity

double juce::AnimatedPositionBehaviours::ContinuousWithMomentum::minimumVelocity = 0.05

private

Referenced by getNextPosition(), and setMinimumVelocity().

velocity

double juce::AnimatedPositionBehaviours::ContinuousWithMomentum::velocity = 0

private

Referenced by getNextPosition(), isStopped(), and releasedWithVelocity().

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The documentation for this struct was generated from the following file:

• juce_AnimatedPositionBehaviours.h