Momentum provides limits and dampening to a floating-point attribute. More...

#include <MultiWidgets/Momentum.hpp>

Inheritance diagram for MultiWidgets::Momentum:

Public Types
enum	Flags { NONE = 0, CYCLIC = (1 << 0), SEEK_TO_NEAREST_INTEGER = (1 << 1), SEEK_TO_PREV_INTEGER = (1 << 2), SEEK_TO_NEXT_INTEGER = (1 << 3) }
	Behaviour flags. More...

Valuable Attributes
float	attenuate = 0.949999988F
	Determines how the velocity is attenuated. More...

float	epsilon = 1.99999995E-5F
	The epsilon determines minimum accuracy for the velocity. More...

Radiant::FlagsT< Momentum::Flags >	flags = NONE
	Flags determine how the value is calculated. More...

float	max = 100
	Maximum value for the simulated value. More...

float	min = -100
	Minimum value for the simulated value. More...

float	snap-multiplier = 3.F
	After simulation is in snapping mode this is the multiplier which will determine how much faster velocity decreases. More...

float	snap-threshold = 0.00249999994F
	When velocity is less than snap-threshold * (max - min) the value is started to simulate according to the snapping rules. More...

float	value = 0.F
	Current value of the simulation. More...

float	velocity = 0.F
	Velocity determines how quickly the simulated value changes. More...

float	velocity-factor = 60.F
	This attribute determines the factor which velocity is multiplied when updating value. More...

Valuable Attributes inherited from Stylish::Styleable
QString	css-class = ""
	Get the CSS classes of the Styleable as a space separated string. More...

QString	css-id = ""
	Get the CSS id of the Styleable. More...

Valuable Attributes inherited from Valuable::Node
Node::Uuid	id = generateId()
	Returns the unique id. More...

Public Member Functions
float	attenuate () const
	Determines how the velocity is attenuated. More...

float	epsilon () const
	The epsilon determines minimum accuracy for the velocity. More...

Radiant::FlagsT< Flags >	flags () const
	Flags determine how the value is calculated. More...

float	getHistoryVelocity () const
	Returns the average of the velocity from past few frames. More...

bool	hasTarget () const
	Check if the target value has been specified. More...

float	maximum () const
	Maximum value for the simulated value. More...

float	minimum () const
	Minimum value for the simulated value. More...

	Momentum (Valuable::Node *host=nullptr)
	Constructs a new Momentum. More...

bool	moving () const
	Check if the velocity is non-zero. More...

void	setAttenuate (float att)
	Setter for attribute attenuate. More...

void	setEpsilon (float e)
	Setter for attribute epsilon. More...

void	setFlags (Radiant::FlagsT< Flags > flags, bool value)
	Can disable and enable multiple flags at a time. More...

void	setLimits (float min, float max)
	Sets the limits for the parameter. More...

void	setMaximum (float max)
	Setter for attribute max. More...

void	setMinimum (float min)
	Setter for attribute min. More...

void	setSnapMultiplier (float multiplier)
	Setter for attribute snap-multiplier. More...

void	setSnapThreshold (float threshold)
	Setter for attribute snap-threshold. More...

void	setTarget (float target, float vel=0.0f)
	Set a target value for the parameter. More...

void	setValue (float value)
	Setter for attribute value. More...

void	setVelocity (float vel)
	Sets velocity for the given value and moves value according the given velocity. More...

void	setVelocityFactor (float factor)
	Setter for attribute velocity-factor. More...

float	snapMultiplier () const
	After simulation is in snapping mode this is the multiplier which will determine how much faster velocity decreases. More...

float	snapThreshold () const
	When velocity is less than snap-threshold * (max - min) the value is started to simulate according to the snapping rules. More...

float	target () const
	Current target value. More...

bool	update (float dt, bool autoSnap=true)
	Update the simulation. More...

float	value () const
	Current value of the simulation. More...

float	velocity () const
	Velocity determines how quickly the simulated value changes. More...

float	velocityFactor () const
	This attribute determines the factor which velocity is multiplied when updating value. More...

	~Momentum ()
	Destructor.

Public Member Functions inherited from Stylish::Styleable
void	addCSSClass (const QString &s)
	Adds the Styleable to CSS class s. More...

void	addCSSClasses (const QStringList &classes)
	Adds the Styleable to given CSS classes. More...

QString	attributeSource (const QByteArray &name) const
	Gets CSS declaration source location based on the attribute name For example if this object has "size" attribute that is set from a CSS file, attributeSource("size") would return "filename.css:line". More...

const Style &	childStyle () const
	Cached style that should be applied to all children of this object.

const Radiant::ArraySet < QByteArray > &	cssClasses () const
	Get the CSS classes of the Styleable in lowercase.

const QString &	cssClassStr () const
	Get the CSS classes of the Styleable as a space separated string. More...

QString	cssId () const
	Get the CSS id of the Styleable. More...

const QByteArray &	cssType () const
	Get the CSS type of the Styleable.

bool	hasCSSClass (const QByteArray &s) const
	Does the Styleable belong to given CSS class. More...

bool	match (const SimpleSelector &ss, int *specificityOut=nullptr) const
	Checks if SimpleSelector matches this object. More...

bool	pseudoClass (const QByteArray &name) const
	Query if the Styleable has pseudo class called name.

void	removeCSSClass (const QString &s)
	Remove the Styleable from CSS class s. More...

void	setCSSClasses (const QString &s)
	Set the CSS classes as a space separated list You almost always want to use addCSSClass instead of this one. More...

void	setCSSId (const QString &s)
	Set the CSS id of the Styleable. More...

void	setCSSType (const QByteArray &s)
	Set the CSS type of the Styleable.

virtual bool	setProperty (Valuable::Attribute &var, const Valuable::StyleValue &value, Layer layer)
	Converts the given Stylish::Value to Valuable::Attribute.

void	setPseudoClass (const QByteArray &name, bool state)
	Disable or enable pseudo class.

virtual bool	setStyle (const Style &style)
	Applies a style to the object. More...

QString	simpleSelector (bool includePseudoClasses=true) const
	Returns a CSS simple selector that matches this Styleable.

const Style &	style () const
	Returns the style for this object.

	Styleable (const QByteArray &name="Styleable")
	Constructor for Styleable. More...

Public Member Functions inherited from Valuable::Node
bool	acceptsEvent (const QByteArray &messageId) const
	Returns true if this object accepts event 'id' in eventProcess.

bool	addAttribute (Attribute *const attribute)
	Adds a new Attribute to the list of attribute objects. More...

bool	addAttribute (const QByteArray &name, Attribute *const attribute)
	Adds a new Attribute to the list of attribute objects.

template<typename Widget >
bool	addAttribute (const QByteArray &name, const Radiant::IntrusivePtr< Widget > &attribute)
	Adds a new Attribute to the list of attribute objects. More...

long	addListener (const QByteArray &attribute, v8::Persistent< v8::Function > func, int role=Attribute::CHANGE_ROLE)
	Add a JavaScript attribute listener to attribute belonging this Node. More...

virtual Attribute *	attribute (const QByteArray &name) const
	Gets an Attribute with the given name. More...

template<typename T >
AttributeT< T > *	attribute (const QByteArray &name) const
	Gets an Attribute with the given name. More...

const container &	attributes () const

void	clearValues (Layer layer)
	Clears all Attribute values of the given layer. More...

void	debugDump ()
	Prints the contents of this Attribute to the terminal.

virtual bool	deserialize (const ArchiveElement &element)
	De-serializes this object (and its children) from a DOM node.

void	eventAddDeprecated (const QByteArray &deprecatedId, const QByteArray &newId)
	Register a deprecated event that is automatically converted to new event id and a warning is issued when it is used. More...

void	eventAddIn (const QByteArray &messageId)
	Registers a new event that this class handles in eventProcess.

template<typename Widget >
long	eventAddListener (const QByteArray &eventId, const QByteArray &messageId, Radiant::IntrusivePtr< Widget > &listener, ListenerType listenerType=DIRECT, const Radiant::BinaryData *defaultData=0)
	Add an event listener to this object. More...

long	eventAddListener (const QByteArray &eventId, const QByteArray &messageId, Valuable::Node listener, ListenerType listenerType=DIRECT, const Radiant::BinaryData defaultData=0)
	Add an event listener to this object. More...

long	eventAddListener (const QByteArray &eventId, ListenerFuncVoid func, ListenerType listenerType=DIRECT)
	Add an event listener to this object. More...

long	eventAddListener (const QByteArray &eventId, Node *dstNode, ListenerFuncVoid func, ListenerType listenerType=DIRECT)

long	eventAddListenerBd (const QByteArray &eventId, Node *dstNode, ListenerFuncBd func, ListenerType listenerType=DIRECT)

long	eventAddListenerBd (const QByteArray &eventId, ListenerFuncBd func, ListenerType listenerType=DIRECT)
	Add an event listener to this object. More...

void	eventAddOut (const QByteArray &eventId)
	Registers a new event this class can send with eventSend.

const QSet< QByteArray > &	eventInNames () const
	Returns set of all registered IN events.

unsigned	eventListenerCount () const
	Returns the number of event listeners.

const QSet< QByteArray > &	eventOutNames () const
	Returns set of all registered OUT events.

void	eventPassingEnable (bool enable)
	Control whether events are passed.

template<typename Widget >
int	eventRemoveListener (Radiant::IntrusivePtr< Widget > &listener)
	Removes all events from this object to given listener. More...

template<typename Widget >
int	eventRemoveListener (const QByteArray &eventId=QByteArray(), const QByteArray &messageId=QByteArray(), Radiant::IntrusivePtr< Widget > &listener=Radiant::IntrusivePtr< Widget >())
	Removes events from this object that match the parameters. More...

int	eventRemoveListener (const QByteArray &eventId=QByteArray(), const QByteArray &messageId=QByteArray(), Valuable::Node *listener=0)
	Removes event listeners from this object. More...

int	eventRemoveListener (Valuable::Node *listener)
	Removes all events from this object to given listener. More...

bool	eventRemoveListener (long listenerId)
	Removes event listener with given id. More...

void	eventSend (const QByteArray &eventId, Radiant::BinaryData &bd)
	Sends an event and bd to all listeners on this eventId.

void	eventSend (const QByteArray &eventId)
	Sends an event to all listeners on this eventId.

template<typename P1 >
void	eventSend (const QByteArray &eventId, const P1 &p1)
	Sends an event to all listeners on this eventId. More...

template<typename P1 , typename P2 >
void	eventSend (const QByteArray &eventId, const P1 &p1, const P2 &p2)
	Sends an event to all listeners on this eventId. More...

template<typename P1 , typename P2 , typename P3 >
void	eventSend (const QByteArray &eventId, const P1 &p1, const P2 &p2, const P3 &p3)
	Sends an event to all listeners on this eventId. More...

template<typename P1 , typename P2 , typename P3 , typename P4 >
void	eventSend (const QByteArray &eventId, const P1 &p1, const P2 &p2, const P3 &p3, const P4 &p4)
	Sends an event to all listeners on this eventId. More...

template<typename P1 , typename P2 , typename P3 , typename P4 , typename P5 >
void	eventSend (const QByteArray &eventId, const P1 &p1, const P2 &p2, const P3 &p3, const P4 &p4, const P5 &p5)
	Sends an event to all listeners on this eventId. More...

unsigned	eventSourceCount () const
	Returns the number of event sources.

Uuid	id () const
	Returns the unique id.

bool	isBeingDestroyed () const
	Returns true if we are about to delete this object. More...

bool	loadFromFileXML (const QString &filename)
	Reads this object (and its children) from an XML file.

bool	loadFromMemoryXML (const QByteArray &buffer)
	Reads this object (and its children) from a memory buffer.

	Node (Node *host, const QByteArray &name="", bool transit=false)
	Constructs a new Node and adds it under the given host. More...

	Node (Node &&node)
	Moves a node, including all its attributes, events etc. More...

Node &	operator= (Node &&node)
	Moves a node, replacing this. More...

virtual bool	readElement (const ArchiveElement &element)
	Handles a serialization element that lacks automatic handlers. More...

void	removeAttribute (Attribute *const attribute)
	Removes an Attribute from the list of attribute objects.

bool	saveToFileXML (const QString &filename, unsigned int opts=SerializationOptions::DEFAULTS) const
	Saves this object (and its children) to an XML file.

bool	saveToMemoryXML (QByteArray &buffer, unsigned int opts=SerializationOptions::DEFAULTS) const
	Saves this object (and its children) to binary data buffer.

virtual ArchiveElement	serialize (Archive &doc) const
	Serializes this object (and its children) to a DOM node.

virtual void	setAsDefaults ()
	Sets the current USER attribute value as the default value and clears the USER value. More...

void	setId (Uuid newId)
	Sets the unique id. More...

template<class T >
bool	setValue (const QByteArray &name, const T &v)
	Uses a query string to find a Attribute, and sets a new value to that if found. More...

bool	setValue (const QByteArray &name, v8::Handle< v8::Value > v)
	Set attribute value from JavaScript. More...

Public Member Functions inherited from Valuable::Attribute
long	addListener (ListenerFunc func, int role=CHANGE_ROLE)
	Adds a listener that is invoked whenever the value is changed. More...

long	addListener (Node *listener, ListenerFunc func, int role=CHANGE_ROLE)
	Adds a listener that is invoked whenever the value is changed. More...

long	addListener (v8::Persistent< v8::Function > func, int role=CHANGE_ROLE)
	Adds a JavaScript listener that is invoked whenever the value is changed. More...

virtual float	asFloat (bool *const ok=0, Layer layer=LAYER_CURRENT) const
	Converts the value object in a floating point number. More...

virtual int	asInt (bool *const ok=0, Layer layer=LAYER_CURRENT) const
	Converts the value object in an integer. More...

virtual QString	asString (bool *const ok=0, Layer layer=LAYER_CURRENT) const
	Converts the value object to a string. More...

	Attribute (const Attribute &o)
	Create a copy of the given Attribute WITHOUT the link to host, listeners, or the attribute name. More...

	Attribute (Node *host, const QByteArray &name, bool transit=false)
	Constructs a new value object and attaches it to its host. More...

virtual void	clearValue (Layer layer)
	Unsets the value from a specific layer. More...

virtual void	emitChange ()
	Invokes the change valueChanged function of all listeners.

virtual void	eventProcess (const QByteArray &id, Radiant::BinaryData &data)
	Process a message. More...

void	eventProcessFloat (const char *id, float v)
	Utility function for sending a float message to the object.

void	eventProcessInt (const char *id, int v)
	Utility function for sending an int message to the object.

void	eventProcessString (const char *id, const QString &str)
	Utility function for sending string message to the object.

void	eventProcessString (const char id, const char str)
	Utility function for sending string message to the object.

void	eventProcessVector2 (const char *id, Nimble::Vector2)
	Utility function for sending a Nimble::Vector2f message to the object.

void	eventProcessVector3 (const char *id, Nimble::Vector3)
	Utility function for sending a Vector3 message to the object.

void	eventProcessVector4 (const char *id, Nimble::Vector4)
	Utility function for sending a Vector4 message to the object.

virtual bool	handleShorthand (const Valuable::StyleValue &value, Radiant::ArrayMap< Valuable::Attribute *, Valuable::StyleValue > &expanded)
	If attribute supports shorthand properties, this should be used to parse those. More...

Node *	host () const
	The host object of the value object (is any). More...

virtual bool	isChanged () const

virtual bool	isValueDefinedOnLayer (Layer layer) const
	Check if the given layer defines a value. More...

bool	layerForSerialization (SerializationOptions flags, Layer &layer) const

const QByteArray &	name () const
	Returns the name of the object.

const Attribute &	operator= (const Attribute &)
	Create a copy of the given Attribute WITHOUT the link to host, listeners, or the attribute name. More...

Attribute *	ownerShorthand () const

QByteArray	path () const
	Returns the path (separated by '/'s) from the root.

void	removeHost ()
	Sets the host pointer to zero and removes this object from the host. More...

bool	removeListener (Node *listener, int role=ALL_ROLES)
	Removes a listener from the listener list. More...

bool	removeListener (long id)
	Removes a listener from the listener list. More...

void	removeListeners (int role=ALL_ROLES)
	Removes listeners from the listener list.

virtual bool	set (float v, Layer layer=USER, ValueUnit unit=VU_UNKNOWN)
	Sets the value of the object.

virtual bool	set (int v, Layer layer=USER, ValueUnit unit=VU_UNKNOWN)
	Sets the value of the object.

virtual bool	set (const QString &v, Layer layer=USER, ValueUnit unit=VU_UNKNOWN)
	Sets the value of the object.

virtual bool	set (const Nimble::Vector2f &v, Layer layer=USER, QList< ValueUnit > units=QList< ValueUnit >())
	Sets the value of the object.

virtual bool	set (const Nimble::Vector3f &v, Layer layer=USER, QList< ValueUnit > units=QList< ValueUnit >())
	Sets the value of the object.

virtual bool	set (const Nimble::Vector4f &v, Layer layer=USER, QList< ValueUnit > units=QList< ValueUnit >())
	Sets the value of the object.

virtual bool	set (const StyleValue &value, Layer layer=USER)
	Sets the value of the object.

void	setName (const QByteArray &s)
	Sets the name of the object.

void	setOwnerShorthand (Attribute *owner)

virtual QByteArray	type () const
	Get the type id of the attribute. More...

Public Member Functions inherited from Valuable::Serializable
virtual bool	deserializeXML (const DOMElement &element)
	Deserializes (reads) this object from an XML element. More...

bool	isSerializable () const

void	setSerializable (bool v)

Additional Inherited Members
Node Events inherited from Stylish::Styleable
[OUT]	pseudo-class-changed (QString name, bool state)
	Pseudo class `name` was added (state == true) or removed (state == false)

Static Public Member Functions inherited from Valuable::Node
static bool	copyValues (const Node &from, Node &to)
	Copies attribute values from one node to another. More...

static void	disableQueue ()
	Disables all AFTER_UPDATE event processing, no new events will be accepted and the current queue will be cleared. More...

static Uuid	generateId ()
	Generates a unique identifier. More...

static void	invokeAfterUpdate (ListenerFuncVoid function)
	Queue function to be called in the main thread after the next update() More...

static int	processQueue ()
	Triggers any pending AFTER_UPDATE-events. More...

static void	reEnableQueue ()
	Enables queue after calling disableQueue. More...

static void	setFatalOnEventMismatch (bool haltApplication)
	Controls what to do when an event mismatch is detected The default behavior is to output a warning to the terminal (haltApplication = false). More...

Protected Member Functions inherited from Stylish::Styleable
virtual void	attributeAdded (Attribute *attribute)
	This is called when new attribute is added to Node. More...

virtual void	attributeRemoved (Attribute *attribute)
	This is called when attribute is removed from Node. More...

virtual void	updateStyle ()
	Set the style for this object.

Protected Attributes inherited from Stylish::Styleable
Style	m_childStyle
	Cached style that should be applied to all children of this object.

Valuable::AttributeString	m_cssClass
	CSS class of the object as a space separated list.

Valuable::AttributeString	m_cssId
	CSS id of the object.

QByteArray	m_cssType
	CSS type of the object.

Style	m_style
	Currently applied style.

Detailed Description

Momentum provides limits and dampening to a floating-point attribute.

Typically Momentum is used to produce animations that feel as if objects would behave in a physical matter. For example, it can be used to simulate dampening of velocity by friction.

To control the Momentum parameters from CSS, you need to use following kind of a construct:

ListWidget > Momentum
{
  attenuate: 0.05;
  flags: cyclic seek-to-nearest-integer;
}

This example is for a case where the momentum object is used in a ListWidget.

Member Enumeration Documentation

enum MultiWidgets::Momentum::Flags

Behaviour flags.

Enumerator
NONE	"none", No special behaviour
CYCLIC	"cyclic", Wrap around when the range is exceeded.
SEEK_TO_NEAREST_INTEGER	"seek-to-nearest-integer", When entering snapping mode, seek to the integer nearest the current value
SEEK_TO_PREV_INTEGER	"seek-to-previous-integer", When entering snapping mode, seek to the previous integer of the current value
SEEK_TO_NEXT_INTEGER	"seek-to-next-integer", When entering snapping mode, seek to the integer next to the current value

Constructor & Destructor Documentation

MultiWidgets::Momentum::Momentum ( Valuable::Node * host = nullptr )

Constructs a new Momentum.

Parameters

host	Host object of this momentum

Member Function Documentation

float MultiWidgets::Momentum::attenuate ( ) const

Determines how the velocity is attenuated.

When value is one the attenuation is stronger ie. velocity goes fast to zero. Value is effectively clamped to the unit interval.

See Also: setAttenuate

float MultiWidgets::Momentum::epsilon ( ) const

The epsilon determines minimum accuracy for the velocity.

If the velocity drops below epsilon, it is clamped to zero.

See Also: setEpsilon

Radiant::FlagsT<Flags> MultiWidgets::Momentum::flags ( ) const

Flags determine how the value is calculated.

See Also: setFlags

float MultiWidgets::Momentum::getHistoryVelocity ( ) const

Returns the average of the velocity from past few frames.

Useful to avoid sudden changes in velocity when a finger is removed from the screen.

Returns: average velocity

bool MultiWidgets::Momentum::hasTarget ( ) const

inline

Check if the target value has been specified.

Returns: true if the target has been set

float MultiWidgets::Momentum::maximum ( void ) const

Maximum value for the simulated value.

See Also: setMaximum

Returns: Current value of the max attribute

float MultiWidgets::Momentum::minimum ( void ) const

Minimum value for the simulated value.

See Also: setMinimum

Returns: Current value of the min attribute

bool MultiWidgets::Momentum::moving ( ) const

inline

Check if the velocity is non-zero.

Returns: true if the velocity differs from zero

void MultiWidgets::Momentum::setAttenuate ( float att )

Setter for attribute attenuate.

See Also: attenuate

Parameters

att	new attribute value

void MultiWidgets::Momentum::setEpsilon ( float e )

Setter for attribute epsilon.

See Also: epsilon

Parameters

e	new attribute value

void MultiWidgets::Momentum::setFlags	(	Radiant::FlagsT< Flags >	flags,
		bool	value
	)

Can disable and enable multiple flags at a time.

Parameters

flags	flags to modify
value	value of the flags to set

See Also: flags

void MultiWidgets::Momentum::setLimits	(	float	min,
		float	max
	)

Sets the limits for the parameter.

See Also: setMinimum, setMaximum

Parameters

min	minimum allowed value for the attribute
max	maximum allowed value for the attribute

void MultiWidgets::Momentum::setMaximum ( float max )

Setter for attribute max.

See Also: maximum

Parameters

max	new attribute value

void MultiWidgets::Momentum::setMinimum ( float min )

Setter for attribute min.

See Also: minimum

Parameters

min	new attribute value

void MultiWidgets::Momentum::setSnapMultiplier ( float multiplier )

Setter for attribute snap-multiplier.

See Also: snapMultiplier

Parameters

multiplier new attribute value

void MultiWidgets::Momentum::setSnapThreshold ( float threshold )

Setter for attribute snap-threshold.

See Also: snapThreshold

Parameters

threshold new attribute value

void MultiWidgets::Momentum::setTarget	(	float	target,
		float	vel = `0.0f`
	)

Set a target value for the parameter.

The actual value is then interpolated and the dampening is ignored.

See Also: target

Parameters

target	Target value
vel	Initial velocity

void MultiWidgets::Momentum::setValue ( float value )

Setter for attribute value.

Parameters

value new attribute value

void MultiWidgets::Momentum::setVelocity ( float vel )

Sets velocity for the given value and moves value according the given velocity.

Parameters

vel	New value for velocity

See Also: velocity

void MultiWidgets::Momentum::setVelocityFactor ( float factor )

Setter for attribute velocity-factor.

See Also: velocityFactor

Parameters

factor new attribute value

float MultiWidgets::Momentum::snapMultiplier ( ) const

After simulation is in snapping mode this is the multiplier which will determine how much faster velocity decreases.

See Also: setSnapMultiplier, snap-threshold

Returns: Current value of the snap-multiplier attribute

float MultiWidgets::Momentum::snapThreshold ( ) const

When velocity is less than snap-threshold * (max - min) the value is started to simulate according to the snapping rules.

Basically velocity will attenuate snap-multiplier times faster after this.

See Also: setSnapThreshold, snap-multiplier

Returns: Current value of the snap-threshold attribute

float MultiWidgets::Momentum::target ( ) const

Current target value.

See Also: setTarget

Returns: Current target

bool MultiWidgets::Momentum::update	(	float	dt,
		bool	autoSnap = `true`
	)

Update the simulation.

Parameters

dt	frame time in seconds
autoSnap	If set ot true, momentum will automatically snap to closest integer values

Returns: true if the value was changed; otherwise false

float MultiWidgets::Momentum::value ( ) const

inline

Current value of the simulation.

See Also: setValue

float MultiWidgets::Momentum::velocity ( ) const

inline

Velocity determines how quickly the simulated value changes.

See Also: setVelocity

float MultiWidgets::Momentum::velocityFactor ( ) const

This attribute determines the factor which velocity is multiplied when updating value.

Can be used if wanting to "accelerate" time.

See Also: setVelocityFactor

Returns: Current value of the velocity-factor attribute

Public Types

Valuable Attributes

Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation