colour grating stimulus, inherits from baseStimulus COLOURGRATINGSTIMULUS colour grating stimulus, inherits from baseStimulus The basic properties are: type = 'sinusoid' or 'square', if square you should set sigma which smoothes the interface and stops pixel motion artifacts that normally inflict square wave gratings, set sigma to 0 to remove smoothing. colour = first grating colour colour2 = second grating colour baseColour = the midpoint between the two from where contrast works, defult just inherits the background colour from screenManager correctBaseColour = automatically generate baseColour as the average of colour and colour2 contrast = contrast from 0 - 1 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 mask = use circular mask (true) or not (false)
See docs for more property details.
- Todo:
- phase appears different to gratingStimulus, work out why
Copyright ©2014-2022 Ian Max Andolina — released: LGPL3, see LICENCE.md
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function | colourGratingStimulus (in varargin) |
| Class constructor.
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function | setup (in me, in sM) |
| Setup this object in preparation 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 converted 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 with all the cache properties for display.
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function | set_cOut (in me, in value) |
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function | set_c2Out (in me, in value) |
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function | set_sfOut (in me, in value) |
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function | set_tfOut (in me, in value) |
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function | set_reverseDirectionOut (in me, in value) |
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function | set_sizeOut (in me, in value) |
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function | set_xPositionOut (in me, in value) |
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function | set_yPositionOut (in me, in value) |
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function | update (in me) |
| Update this stimulus object for display.
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function | draw (in me) |
| Draw this stimulus object for display.
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function | animate (in me) |
| Animate this object for runExperiment.
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function | reset (in me) |
| Reset an structure for runExperiment.
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function | calculatePhase (in me) |
| calculate phase offset
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function set | sf (in me, in value) |
| sf Set method
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function set | colour2 (in me, in value) |
| SET Colour2 method Allow 1 (R=G=B) 3 (RGB) or 4 (RGBA) value colour.
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function set | baseColour (in me, in value) |
| SET baseColour method Allow 1 (R=G=B) 3 (RGB) or 4 (RGBA) value colour.
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function | getsfOut (in me) |
| sfOut Pseudo Get method
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virtual | setup (in runObject) |
| ALL Children must implement these 5 methods!
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function | baseStimulus (in varargin) |
| Class constructor.
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function set | colour (in me, in value) |
| colour set method Allow 1 (R=G=B) 3 (RGB) or 4 (RGBA) value colour
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function set | alpha (in me, in value) |
| alpha set method
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function get | delta (in me) |
| delta Get method delta is the normalised number of pixels per frame to move a stimulus
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function get | dX (in me) |
| dX Get method X position increment for a given delta and angle
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function get | dY (in me) |
| dY Get method Y position increment for a given delta and angle
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function | show (in me) |
| Method to set isVisible=true.
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function | hide (in me) |
| Method to set isVisible=false.
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function | setOffTime (in me, in time) |
| set offTime
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function | setDelayTime (in me, in time) |
| set delayTime
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function | resetTicks (in me) |
| reset the various tick counters for our stimulus
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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)
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function | run (in me, in benchmark, in runtime, in s, in forceScreen, in showVBL) |
| Run stimulus in a window to preview it.
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function | makePanel (in me, in parent) |
| make a GUI properties panel for this object
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function | selectFilePanel (in me, in varargin) |
| read values from a GUI properties panel for this object
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function | readPanel (in me, in varargin) |
| read values from a GUI properties panel for this object
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function | showPanel (in me) |
| show GUI properties panel for this object
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function | hidePanel (in me) |
| hide GUI properties panel for this object
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function | closePanel (in me, in varargin) |
| close GUI panel for this object
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function | cleanHandles (in me, in ignoredArg) |
| clean any handles
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function | getP (in me, in name, in range) |
| gets a property copy or original property
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function | setP (in me, in name, in value) |
| sets a property copy or original property
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function | updateXY (in me, in x, in y, in useDegrees) |
| Update only position info, faster and doesn't reset image etc.
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function | optickaCore (in varargin) |
| Class constructor.
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function get | fullName (in me) |
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function | getALF (in me, in subject, in sessionPrefix, in lab, in create) |
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function | findAttributes (in me, in attrName, in attrValue) |
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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.
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function | findPropertyDefault (in me, in propName) |
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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.
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function | checkSuperclasses (in List) |
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function | editProperties (in me, in properties) |
| method to modify a set of properties
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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.
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function | initialiseGlobals (in me, in doReset, in doOpen) |
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function | initialiseSaveFile (in me) |
| Initialise Save prefix.
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function | checkPaths (in me) |
| checks the paths are valid
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Property | type |
| family type, can be 'sinusoid' or 'square'
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Property | sf |
| spatial frequency of the grating
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Property | tf |
| temporal frequency of the grating
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Property | colour2 |
| second colour of a colour grating stimulus
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Property | baseColour |
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Property | rotateTexture |
| rotate the grating patch (false) or the grating texture within the patch (default = true)?
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Property | phase |
| phase of grating
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Property | contrast |
| contrast of grating (technically the contrast from the baseColour)
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Property | mask |
| use a circular mask for the grating (default = true).
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Property | reverseDirection |
| direction of the drift; default = false means drift left>right when angle is 0deg.
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Property | direction |
| the direction of the grating object if moving.
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Property | correctPhase |
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Property | correctBaseColour |
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Property | phaseReverseTime |
| Reverse phase of grating X times per second? Useful with a static grating for linearity testing.
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Property | phaseOfReverse |
| What phase to use for reverse?
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Property | sigma |
| sigma of square wave smoothing, use -1 for sinusoidal gratings
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Property | aspectRatio |
| aspect ratio of the grating
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Property | visibleRate |
| turn stimulus on/off at X hz, [] diables this
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Property | family |
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Property | scale |
| scale is used when changing size as an independent variable to keep sf accurate
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Property | phaseIncrement |
| the phase amount we need to add for each frame of animation
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Constant Property | typeList |
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Property | ignorePropertiesUI |
| properties to not show in the UI panel
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Property | type |
| stimulus type
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Property | xPosition |
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Property | yPosition |
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Property | size |
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Property | colour |
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Property | alpha |
| Alpha (opacity) [0-1], this gets combined with the RGB colour.
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Property | startPosition |
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Property | speed |
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Property | angle |
| angle in degrees (0 - 360)
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Property | delayTime |
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Property | offTime |
| time to turn stimulus off, relative to stimulus onset
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Property | isVisible |
| true or false, whether to draw() this object
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Property | mouseOverride |
| override X and Y position with mouse input? Useful for RF mapping
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Property | showOnTracker |
| show the position on the Eyetracker display?
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Property | verbose |
| Do we log extra details to the command-line?
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Property | xFinal |
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Property | yFinal |
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Property | mvRect |
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Property | szIsPx |
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Property | szPx |
| computed size in pixels
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Property | szD |
| computed size in °
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Property | xFinalD |
| X and Y position in °
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Property | yFinalD |
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Property | isRect |
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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
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Property | drawTick |
| draw tick only updates when a draw is actually performed, resets on each update
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Property | ppd |
| pixels per degree (normally inhereted from screenManager)
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Property | delta |
| What our per-frame motion delta is.
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Property | dX |
| X update which is computed from our speed and angle.
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Property | dY |
| X update which is computed from our speed and angle.
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Property | name |
| object name
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Property | comment |
| comment
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Property | verbose |
| verbose logging, subclasses must assign this. This is normally logical true/false
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Property | dateStamp |
| clock() dateStamp set on construction
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Property | uuid |
| universal ID
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Property | paths |
| storage of various paths
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Property | fullName |
| The fullName is the object name combined with its uuid and class name.
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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.
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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
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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
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function | fixBaseColour (in me, in varargin) |
| fixBaseColour POST SET
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function | addRuntimeProperties (in me) |
| These are transient properties that specify actions during runtime.
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function | updateRuntimeProperties (in me) |
| Update transient properties that specify actions during runtime.
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function | computePosition (in me) |
| compute xFinal and yFinal (in pixels) taking startPosition, xPosition, yPosition and direction/angle into account
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function | setAnimationDelta (in me) |
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function | setRect (in me) |
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function | toStructure (in me, in tmp) |
| Converts properties to a structure.
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function | removeTmpProperties (in me) |
| Finds and removes dynamic properties.
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function | delete (in me) |
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function | parseArgs (in me, in args, in allowedProperties) |
| Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.
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function | addArgs (in me, in args) |
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function | setPaths (in me) |
| Sets properties from a structure or normal arguments pairs, ignores invalid or non-allowed properties.
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function | getFonts (in me) |
| set paths for object
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function | toStructure (in me) |
| Converts properties to a structure.
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function | getType (in me, in in) |
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function | logOutput (in me, in in, in message, in override) |
| Give a metaproperty return the likely property class.
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function | salutation (in me, in varargin) |
| Prints messages dependent on verbosity.
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Property | sfCache |
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Property | sfRecurse |
| to stop a loop between set method and an event
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Property | allowedProperties |
| allowed properties passed to object upon construction
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Property | ignoreProperties |
| properties to not create transient copies of during setup phase
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Property | phaseCounter |
| how many frames between phase reverses
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Property | maskValue |
| mask value (radius for the procedural shader)
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Property | shader |
| the raw shader, we can try to change colours.
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Property | colourCache |
| these store the current colour so we can check if update needs
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Property | colour2Cache |
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Property | visibleTick |
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Property | visibleFlip |
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Property | family |
| the stimulus family (grating, dots etc.)
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Property | texture |
| Our texture pointer for texture-based stimuli.
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Property | handles |
| handles for the GUI
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Property | sM |
| our screen manager
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Property | animator |
| animation manager
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Property | screenVals |
| screen settings generated by sM on setup
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Property | isSetup |
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Property | isGUI |
| is panel constructed?
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Property | dstRect |
| initial screen rectangle position [LEFT TOP RIGHT BOTTOM]
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Property | mouseValid |
| is mouse position within screen co-ordinates?
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Property | mouseX |
| mouse X position
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Property | mouseY |
| mouse Y position
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Property | delayTicks |
| delay ticks to wait until display
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Property | offTicks |
| ticks before stimulus turns off
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Property | inSetup |
| are we setting up?
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Property | delta_ |
| delta cache
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Property | dX_ |
| dX cache
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Property | dY_ |
| dY cache
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Property | isInSetColour |
| deal with interaction of colour and alpha
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Property | setLoop |
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Property | ignorePropertiesBase |
| Which properties to ignore cloning when making transient copies in setup.
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Property | ignorePropertiesUIBase |
| Which properties to not draw in the UI panel.
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Property | cloning |
| are we cloning this from another object
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Property | mversion |
| Matlab version number, this is transient so it is not saved.
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Property | sansFont |
| sans font
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Property | monoFont |
| monoFont
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Property | className |
| class name
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Property | savePrefix |
| save prefix generated from clock time
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Property | fullName_ |
| cached full name
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