single grating stimulus, inherits from baseStimulus GRATINGSTIMULUS single grating stimulus, inherits from baseStimulus The basic properties are: sf = spatial frequency in degrees tf = temporal frequency in degs/s angle = angle in degrees rotateTexture = do we rotate the grating texture (true) or the patch itself (false) phase = phase of grating contrast = contrast from 0 - 1 mask = use circular mask (true) or not (false) correctPhase = set the phase from the center rather than edge sigma = optional smoothing for circular masks More...

Detailed Description

single grating stimulus, inherits from baseStimulus GRATINGSTIMULUS single grating stimulus, inherits from baseStimulus The basic properties are: sf = spatial frequency in degrees tf = temporal frequency in degs/s angle = angle in degrees rotateTexture = do we rotate the grating texture (true) or the patch itself (false) phase = phase of grating contrast = contrast from 0 - 1 mask = use circular mask (true) or not (false) correctPhase = set the phase from the center rather than edge sigma = optional smoothing for circular masks

See docs for more property details

Inheritance diagram for gratingStimulus:

Public Member Functions
function	gratingStimulus (in varargin)
	Class constructor.

function	setup (in me, in sM)
	Setup this object in preperation for use When displaying a stimulus object, the main properties that are to be modified are copied into cache copies of the property, both to convert from visual description (c/d, Hz, degrees) to computer metrics, and to be animated and modified as independant variables. So xPosition is copied to xPositionOut and converyed from degrees to pixels. The animation and drawing functions use these modified properties, and when they are updated, for example to change to a new xPosition, internal methods ensure reconversion and update any dependent properties. This method initialises the object for display.

function	set_sfOut (in me, in value)

function	set_tfOut (in me, in value)

function	set_reverseDirectionOut (in me, in value)

function	set_sizeOut (in me, in value)

function	set_xPositionOut (in me, in value)

function	set_yPositionOut (in me, in value)

function	update (in me)
	Update this stimulus object for display.

function	draw (in me)
	Draw this stimulus object for display.

function	animate (in me)
	Animate this object for runExperiment.

function	reset (in me)
	Reset an structure for runExperiment.

function set	sf (in me, in value)
	sf Set method

function	calculatePhase (in me)
	calculate phase offset

function	getsfOut (in me)
	sfOut Pseudo Get method

Public Member Functions inherited from baseStimulus
virtual	setup (in runObject)
	ALL Children must implement these 5 methods!

function	baseStimulus (in varargin)
	Class constructor.

function set	colour (in me, in value)
	colour set method Allow 1 (R=G=B) 3 (RGB) or 4 (RGBA) value colour

function set	alpha (in me, in value)
	alpha set method

function get	delta (in me)
	delta Get method delta is the normalised number of pixels per frame to move a stimulus

function get	dX (in me)
	dX Get method X position increment for a given delta and angle

function get	dY (in me)
	dY Get method Y position increment for a given delta and angle

function	show (in me)
	Method to set isVisible=true.

function	hide (in me)
	Method to set isVisible=false.

function	setOffTime (in me, in time)
	set offTime

function	setDelayTime (in me, in time)
	set delayTime

function	resetTicks (in me)
	reset the various tick counters for our stimulus

function	getMousePosition (in me)
	get mouse position we make sure this is only called once per animation tick to improve performance and ensure all stimuli that are following mouse position have consistent X and Y per frame update This sets mouseX and mouseY and mouseValid if mouse is within PTB screen (useful for mouse override positioning for stimuli)

function	run (in me, in benchmark, in runtime, in s, in forceScreen, in showVBL)
	Run stimulus in a window to preview it.

function	makePanel (in me, in parent)
	make a GUI properties panel for this object

function	selectFilePanel (in me, in varargin)
	read values from a GUI properties panel for this object

function	readPanel (in me, in varargin)
	read values from a GUI properties panel for this object

function	showPanel (in me)
	show GUI properties panel for this object

function	hidePanel (in me)
	hide GUI properties panel for this object

function	closePanel (in me, in varargin)
	close GUI panel for this object

function	cleanHandles (in me, in ignoredArg)
	clean any handles

function	getP (in me, in name, in range)
	gets a property copy or original property

function	setP (in me, in name, in value)
	sets a property copy or original property

function	updateXY (in me, in x, in y, in useDegrees)
	Update only position info, faster and doesn't reset image etc.

Public Member Functions inherited from optickaCore
function	optickaCore (in varargin)
	Class constructor.

function get	fullName (in me)

function	getALF (in me, in subject, in sessionPrefix, in lab, in create)

function	findAttributes (in me, in attrName, in attrValue)

function	findAttributesandType (in me, in attrName, in attrValue, in type)
	find properties of object with specific attributes, for example all properties whose GetAcccess attribute is public and type is logical.

function	findPropertyDefault (in me, in propName)

function	clone (in me)
	Use this syntax to make a deep copy of the object, i.e. OBJ_OUT has the same field values, but will not behave as a handle-copy of me anymore.

function	checkSuperclasses (in List)

function	editProperties (in me, in properties)
	method to modify a set of properties

function	setProp (in me, in property, in value)
	method to fast change a particular value. This is useful for use in anonymous functions, like in the state machine.

function	initialiseGlobals (in me, in doReset, in doOpen)

function	initialiseSaveFile (in me)
	Initialise Save prefix.

function	checkPaths (in me)
	checks the paths are valid

Public Attributes
Property	type
	family type, can be 'sinusoid' or 'square'

Property	sf
	spatial frequency of the grating

Property	tf
	temporal frequency of the grating

Property	rotateTexture
	rotate the grating patch (false) or the grating texture within the patch (true [default])?

Property	phase
	phase of grating

Property	contrast
	contrast of grating

Property	mask
	use a circular mask for the grating (default = true), note this can also be smoothed at the edge.

Property	reverseDirection
	direction of the drift; default = false means drift left>right when angle is 0deg.

Property	direction

Property	correctPhase

Property	phaseReverseTime
	Reverse phase of grating X times per second? Useful with a static grating for linearity testing.

Property	phaseOfReverse
	What phase to use for reverse?

Property	sigma
	If mask == true, cosine smoothing sigma in pixels for mask.

Property	useAlpha
	If mask == true, use colour or alpha channel for smoothing?

Property	smoothMethod
	If mask == true, use hermite interpolation (true, default) or cosine (false)

Property	aspectRatio
	aspect ratio of the grating, can be [x y] to select width height differently

Property	contrastMult
	PTB Contrast Multiplier, 0.5 gives "standard" 0-1 contrast measure (see PTB docs)

Property	family

Property	scale
	scale is used when changing size as an independent variable to keep sf accurate

Property	phaseIncrement
	the phase amount we need to add for each frame of animation

Public Attributes inherited from baseStimulus
Property	type
	stimulus type

Property	xPosition

Property	yPosition

Property	size

Property	colour

Property	alpha
	Alpha (opacity) [0-1], this gets combined with the RGB colour.

Property	startPosition

Property	speed

Property	angle
	angle in degrees (0 - 360)

Property	delayTime

Property	offTime
	time to turn stimulus off, relative to stimulus onset

Property	isVisible
	true or false, whether to draw() this object

Property	mouseOverride
	override X and Y position with mouse input? Useful for RF mapping

Property	showOnTracker
	show the position on the Eyetracker display?

Property	verbose
	Do we log extra details to the command-line?

Property	xFinal

Property	yFinal

Property	mvRect

Property	szIsPx

Property	szPx
	computed size in pixels

Property	szD
	computed size in °

Property	xFinalD
	X and Y position in °

Property	yFinalD

Property	isRect

Property	tick
	tick updates +1 on each call of draw (even if delay or off is true and no stimulus is drawn, resets on each update

Property	drawTick
	draw tick only updates when a draw is actually performed, resets on each update

Property	ppd
	pixels per degree (normally inhereted from screenManager)

Property	delta
	What our per-frame motion delta is.

Property	dX
	X update which is computed from our speed and angle.

Property	dY
	X update which is computed from our speed and angle.

Public Attributes inherited from optickaCore
Property	name
	object name

Property	comment
	comment

Property	verbose
	verbose logging, subclasses must assign this. This is normally logical true/false

Property	dateStamp
	clock() dateStamp set on construction

Property	uuid
	universal ID

Property	paths
	storage of various paths

Property	fullName
	The fullName is the object name combined with its uuid and class name.

Protected Member Functions
function	setRect (in me)
	setRect setRect makes the PsychRect based on the texture and screen values this is modified over parent method as gratings have slightly different requirements.

function	calculateScale (in me, in ignoredArg, in ignoredArg)
	calculateScale Use an event to recalculate scale as get method is slower (called many more times), than an event which is only called on update

function	calculatePhaseIncrement (in me, in ignoredArg, in ignoredArg)
	calculatePhaseIncrement Use an event to recalculate as get method is slower (called many more times), than an event which is only called on update

function	updateShader (in me)
	updateShader check if we need and update shader texture

Protected Member Functions inherited from baseStimulus
function	addRuntimeProperties (in me)
	These are transient properties that specify actions during runtime.

function	updateRuntimeProperties (in me)
	Update transient properties that specify actions during runtime.

function	computePosition (in me)
	compute xFinal and yFinal (in pixels) taking startPosition, xPosition, yPosition and direction/angle into account

function	setAnimationDelta (in me)

function	setRect (in me)

function	toStructure (in me, in tmp)
	Converts properties to a structure.

function	removeTmpProperties (in me)
	Finds and removes dynamic properties.

function	delete (in me)

Protected Member Functions inherited from optickaCore
function	parseArgs (in me, in args, in allowedProperties)
	Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.

function	addArgs (in me, in args)

function	setPaths (in me)
	Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.

function	getFonts (in me)
	set paths for object

function	toStructure (in me)
	Converts properties to a structure.

function	getType (in me, in in)

function	logOutput (in me, in in, in message, in override)
	Give a metaproperty return the likely property class.

function	salutation (in me, in varargin)
	Prints messages dependent on verbosity.

Protected Attributes
Property	modulateColor

Property	src
	we need different blend mode depending on square or sin wave

Property	dst

Property	sfCache

Property	sfRecurse
	to stop a loop between set method and an event

Property	allowedProperties
	allowed properties passed to object upon construction

Property	ignoreProperties
	properties to not create transient copies of during setup phase

Property	phaseCounter
	how many frames between phase reverses

Property	squareWave
	do we generate a square wave?

Property	maskValue
	mask value

Property	changeBlend
	change blend?

Protected Attributes inherited from baseStimulus
Property	family
	the stimulus family (grating, dots etc.)

Property	texture
	Our texture pointer for texture-based stimuli.

Property	handles
	handles for the GUI

Property	sM
	our screen manager

Property	animator
	animation manager

Property	screenVals
	screen settings generated by sM on setup

Property	isSetup

Property	isGUI
	is panel constructed?

Property	dstRect
	initial screen rectangle position [LEFT TOP RIGHT BOTTOM]

Property	mouseValid
	is mouse position within screen co-ordinates?

Property	mouseX
	mouse X position

Property	mouseY
	mouse Y position

Property	delayTicks
	delay ticks to wait until display

Property	offTicks
	ticks before stimulus turns off

Property	inSetup
	are we setting up?

Property	delta_
	delta cache

Property	dX_
	dX cache

Property	dY_
	dY cache

Property	isInSetColour
	deal with interaction of colour and alpha

Property	setLoop

Property	ignorePropertiesBase
	Which properties to ignore cloning when making transient copies in setup.

Property	ignorePropertiesUIBase
	Which properties to not draw in the UI panel.

Protected Attributes inherited from optickaCore
Property	cloning
	are we cloning this from another object

Property	mversion
	Matlab version number, this is transient so it is not saved.

Property	sansFont
	sans font

Property	monoFont
	monoFont

Property	className
	class name

Property	savePrefix
	save prefix generated from clock time

Property	fullName_
	cached full name

Additional Inherited Members
Public Types inherited from baseStimulus
enum	Events { readPanelUpdate }

Static Public Member Functions inherited from baseStimulus
static function	d2r (in degrees)
	degrees2radians

static function	r2d (in r)
	radians2degrees

static function	findDistance (in x1, in y1, in x2, in y2)
	findDistance in X and Y coordinates

static function	updatePosition (in delta, in angle)
	updatePosition returns dX and dY given an angle and delta

Static Public Member Functions inherited from optickaCore
static function	makeArgs (in args)
	Converts cell args to structure array.

static function	addDefaults (in args, in defs)
	add default options to arg input

static function	hasKey (in in, in key)
	check if a struct / object has a propery / field

static function	getKeys (in device)
	PTB Get key presses, stops key bouncing.

Constructor & Destructor Documentation

◆ gratingStimulus()

function gratingStimulus::gratingStimulus ( in varargin )

Class constructor.

More detailed description of what the constructor does.

Parameters

args	are passed as a structure of properties which is parsed.

Returns: instance of class.

Member Function Documentation

◆ animate()

function gratingStimulus::animate ( in me )

virtual

Animate this object for runExperiment.

Reimplemented from baseStimulus.

◆ calculatePhase()

function gratingStimulus::calculatePhase ( in me )

calculate phase offset

◆ calculatePhaseIncrement()

function gratingStimulus::calculatePhaseIncrement	(	in	me,
		in	ignoredArg,
		in	ignoredArg
	)

protected

calculatePhaseIncrement Use an event to recalculate as get method is slower (called many more times), than an event which is only called on update

◆ calculateScale()

function gratingStimulus::calculateScale	(	in	me,
		in	ignoredArg,
		in	ignoredArg
	)

protected

calculateScale Use an event to recalculate scale as get method is slower (called many more times), than an event which is only called on update

◆ draw()

function gratingStimulus::draw ( in me )

virtual

Draw this stimulus object for display.

Reimplemented from baseStimulus.

◆ getsfOut()

function gratingStimulus::getsfOut ( in me )

sfOut Pseudo Get method

◆ reset()

function gratingStimulus::reset ( in me )

virtual

Reset an structure for runExperiment.

Parameters

rE	runExperiment object for reference

Returns: stimulus structure.

Reimplemented from baseStimulus.

◆ set_reverseDirectionOut()

function gratingStimulus::set_reverseDirectionOut	(	in	me,
		in	value
	)

◆ set_sfOut()

function gratingStimulus::set_sfOut	(	in	me,
		in	value
	)

◆ set_sizeOut()

function gratingStimulus::set_sizeOut	(	in	me,
		in	value
	)

◆ set_tfOut()

function gratingStimulus::set_tfOut	(	in	me,
		in	value
	)

◆ set_xPositionOut()

function gratingStimulus::set_xPositionOut	(	in	me,
		in	value
	)

◆ set_yPositionOut()

function gratingStimulus::set_yPositionOut	(	in	me,
		in	value
	)

◆ setRect()

function gratingStimulus::setRect ( in me )

protected

setRect setRect makes the PsychRect based on the texture and screen values this is modified over parent method as gratings have slightly different requirements.

◆ setup()

function gratingStimulus::setup	(	in	me,
		in	sM
	)

Setup this object in preperation for use When displaying a stimulus object, the main properties that are to be modified are copied into cache copies of the property, both to convert from visual description (c/d, Hz, degrees) to computer metrics, and to be animated and modified as independant variables. So xPosition is copied to xPositionOut and converyed from degrees to pixels. The animation and drawing functions use these modified properties, and when they are updated, for example to change to a new xPosition, internal methods ensure reconversion and update any dependent properties. This method initialises the object for display.

Parameters

sM	screenManager object for reference

◆ sf()

function set gratingStimulus::sf	(	in	me,
		in	value
	)

sf Set method

◆ update()

function gratingStimulus::update ( in me )

virtual

Update this stimulus object for display.

Reimplemented from baseStimulus.

◆ updateShader()

function gratingStimulus::updateShader ( in me )

protected

updateShader check if we need and update shader texture

Member Data Documentation

◆ allowedProperties

Property gratingStimulus::allowedProperties

protected

allowed properties passed to object upon construction

◆ aspectRatio

Property gratingStimulus::aspectRatio

aspect ratio of the grating, can be [x y] to select width height differently

◆ changeBlend

Property gratingStimulus::changeBlend

protected

change blend?

◆ contrast

Property gratingStimulus::contrast

contrast of grating

◆ contrastMult

Property gratingStimulus::contrastMult

PTB Contrast Multiplier, 0.5 gives "standard" 0-1 contrast measure (see PTB docs)

◆ correctPhase

Property gratingStimulus::correctPhase

Do we need to correct the phase to be relative to center not edge? This enables centre surround stimuli are phase matched, and if we enlarge a grating object its phase stays identical at the centre of the object (where we would imagine our RF)

◆ direction

Property gratingStimulus::direction

the direction of the whole grating object - i.e. the object can move as well as the grating texture rotate within the object.

◆ dst

Property gratingStimulus::dst

protected

◆ family

Property gratingStimulus::family

◆ ignoreProperties

Property gratingStimulus::ignoreProperties

protected

properties to not create transient copies of during setup phase

◆ mask

Property gratingStimulus::mask

use a circular mask for the grating (default = true), note this can also be smoothed at the edge.

◆ maskValue

Property gratingStimulus::maskValue

protected

mask value

◆ modulateColor

Property gratingStimulus::modulateColor

protected

beware alpha blending affects alpha so you need to change the modulateColour

◆ phase

Property gratingStimulus::phase

phase of grating

◆ phaseCounter

Property gratingStimulus::phaseCounter

protected

how many frames between phase reverses

◆ phaseIncrement

Property gratingStimulus::phaseIncrement

the phase amount we need to add for each frame of animation

◆ phaseOfReverse

Property gratingStimulus::phaseOfReverse

What phase to use for reverse?

◆ phaseReverseTime

Property gratingStimulus::phaseReverseTime

Reverse phase of grating X times per second? Useful with a static grating for linearity testing.

◆ reverseDirection

Property gratingStimulus::reverseDirection

direction of the drift; default = false means drift left>right when angle is 0deg.

◆ rotateTexture

Property gratingStimulus::rotateTexture

rotate the grating patch (false) or the grating texture within the patch (true [default])?

◆ scale

Property gratingStimulus::scale

scale is used when changing size as an independent variable to keep sf accurate

◆ sf

Property gratingStimulus::sf

spatial frequency of the grating

◆ sfCache

Property gratingStimulus::sfCache

protected

as get methods are slow, we cache sf, then recalculate sf whenever changeScale event is called

◆ sfRecurse

Property gratingStimulus::sfRecurse

protected

to stop a loop between set method and an event

◆ sigma

Property gratingStimulus::sigma

If mask == true, cosine smoothing sigma in pixels for mask.

◆ smoothMethod

Property gratingStimulus::smoothMethod

If mask == true, use hermite interpolation (true, default) or cosine (false)

◆ squareWave

Property gratingStimulus::squareWave

protected

do we generate a square wave?

◆ src

Property gratingStimulus::src

protected

we need different blend mode depending on square or sin wave

◆ tf

Property gratingStimulus::tf

temporal frequency of the grating

◆ type

Property gratingStimulus::type

family type, can be 'sinusoid' or 'square'

◆ useAlpha

Property gratingStimulus::useAlpha

If mask == true, use colour or alpha channel for smoothing?

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

stimuli/gratingStimulus.m

Detailed Description

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ gratingStimulus()

Member Function Documentation

◆ animate()

◆ calculatePhase()

◆ calculatePhaseIncrement()

◆ calculateScale()

◆ draw()

◆ getsfOut()

◆ reset()

◆ set_reverseDirectionOut()

◆ set_sfOut()

◆ set_sizeOut()

◆ set_tfOut()

◆ set_xPositionOut()

◆ set_yPositionOut()

◆ setRect()

◆ setup()

◆ sf()

◆ update()

◆ updateShader()

Member Data Documentation

◆ allowedProperties

◆ aspectRatio

◆ changeBlend

◆ contrast

◆ contrastMult

◆ correctPhase

◆ direction

◆ dst

◆ family

◆ ignoreProperties

◆ mask

◆ maskValue

◆ modulateColor

◆ phase

◆ phaseCounter

◆ phaseIncrement

◆ phaseOfReverse

◆ phaseReverseTime

◆ reverseDirection

◆ rotateTexture

◆ scale

◆ sf

◆ sfCache

◆ sfRecurse

◆ sigma

◆ smoothMethod

◆ squareWave

◆ src

◆ tf

◆ type

◆ useAlpha