Circular Grating Element

Modified on 2018/07/16 21:30 by Administrator Categorized as Elements, Stimulus generators
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== Summary ==
{s:Element Info Panel
| title=Circular Grating
| category=Stimulus Generators
| icon=[image|Element Icon|{UP(Circular-Grating-Element)}Circular-Grating-Element-Icon.png]
| author= OkazoLab
| addin= Visual Kernels
| scope= Parent event
| usage= Stimulus screen
| ownsnippets= None
}
== Properties ==
{|
|-
! Name
! Description                              
! Constraints
! Type
! On<br/>runtime<br/>change
|-
| colspan="5" bgcolor="#AADDDDD" | Settings
|-
| Grating Frequency        
| Defines a number of grating cycles per the patch radius        
| {s:atNormal}        
| Double        
|  
|-
| Grating Phase        
| Defines a shift of the grating phase in degrees (0..360)        
| {s:atNormal}        
| Double        
|  
|-
| Blurring Ratio        
| Defines a standard deviation of the Gaussian blurring applied above the patch        
| {s:atNormal}        
| Double        
|  
|-
| Blurring Ellipticity        
| Defines an ellipticity of the Gaussian blurring (0..1)        
| {s:atNormal}        
| Double        
|  
|-
| Trimming Threshold        
| Defines a trimming threshold for Gaussian blurring mask (0..1), such that mask values below the threshold are not applied.        
| {s:atNormal}        
| Double        
|  
|-
| Low patch color        
| Defines the lowest RGB color in the patch        
| {s:atNormal}        
| stColor        
|  
|-
| High patch color        
| Defines the highest RGB color in the patch        
| {s:atNormal}        
| stColor        
|  
|-
| Patch Shape        
| Defines a shape of the grating patch        
| {s:atNormal}        
| GaborP..        
|  
|-
| Wave Type        
| Defines whether the sine or square wave will be used to the generate the grating        
| {s:atNormal}        
| GaborP..        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Visual Appearance
|-
| Alpha Masking        
| Defines, whether the visual content is used to create an opacity mask on the event surface. If masking is on, the content's pixel luminance (or, its inverse) defines transparency within element's viewport. The alpha masking allows, for example, create transparent holes on the event surface.        
| {s:atDesign}        
| Int32        
|  
|-
| AntiAliasing        
| if true, the rendered content will be antialiased for smoother visual appeariance. If false, rendering will be authentic to its source, e.g. a bitmap.        
| {s:atNormal}        
| Boolean        
|  
|-
| Position        
| Defines a position of the rendering viewport on the screen        
| {s:atNormal}        
| clPoint        
|  
|-
| Size        
| Defines a size of the element's rendering viewport on the screen        
| {s:atNormal}        
| clSize        
|  
|-
| Z Order        
| Indicates Z Order of the element on the given event        
| {s:atStatus}        
| Int32        
|  
|-
| Pivot Point        
| Defines alignment of the pivot point (or, element's position) relative to element's rendering area. The pivot point sets the center of element's rotation and scale directions.        
| {s:atNormal}        
| stAlig..        
|  
|-
| Visible        
| Defines whether the element is visible        
| {s:atNormal}        
| Boolean        
|  
|-
| Rotation        
| Rotation angle in degrees        
| {s:atNormal}        
| Double        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Effects
|-
| Transparent Color        
| The color of the original pixels of rendered content that will be set as transparent        
| {s:atNormal}        
| stColor        
|  
|-
| Transparent Tolerance        
| Tolerance ratio for choosing colors that become transparent. Zero means that effect is not applied, 1 denotes that all colors will become trasparent        
| {s:atNormal}        
| Int32        
|  
|-
| Color Mask        
| Produces a multiplicative combination of the original pixels
and the selected mask color (except the alpha channel).
 The effect emulates a look through a colored glass.
 White or transparent mask color dont change the original pixels        
| {s:atNormal}        
| stColor        
|  
|-
| Opacity        
| Opacity of the rendered content        
| {s:atNormal}        
| Int32        
|  
|-
| Contrast        
| Contrast of the rendered content        
| {s:atNormal}        
| Int32        
|  
|-
| Brightness        
| Brightness the rendered content        
| {s:atNormal}        
| Int32        
|  
|-
| Saturation        
| Saturation of the rendered content        
| {s:atNormal}        
| Double        
|  
|-
| Pixelation        
| Pixelation of the rendered content        
| {s:atNormal}        
| Int32        
|  
|-
| Blurring        
| The radius used in the gaussian blur of rendered content, as a pixel-based factor. The default is 0 which means no blurring.        
| {s:atNormal}        
| Int32        
|  
|-
| Scrambling        
|         
| {s:atNormal}        
| Double        
|  
|-
| Scrambling Grid Size        
| Defines a size of the scrambling grid        
| {s:atNormal}        
| clSize        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Positional Jitter
|-
| Reset Jitter Now        
| Runtime command that resets the positional jitter.        
| {s:atRuntimeAction}        
| Boolean        
|  
|-
| Current Jitter        
| Returns the current jitter        
| {s:atStatus}        
| clPoint        
|  
|-
| Jitter Range        
| Defines a possible range for the random jitter. The range is centered to the position of the element.        
| {s:atNormal}        
| clSize        
|  
|-
| Test Jitter        
| Click to test the current jitter        
| {s:atDesign}        
| Boolean        
|  
|-
| colspan="5" bgcolor="#AADDDDD" | Control
|-
| Is Enabled        
| If set to false the element is completely omitted when the experiment is run        
| {s:atDesign}        
| Boolean        
|  
|-
| Title        
| Title of the element        
| {s:atDesign}        
| String        
|  
|-            
|}
== ==
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'''Circular Grating Element''' is capable of generating circular grating patches defined by a parameter set. {br}{br}
{TOC}

== Snapshots ==
{|
| [imageleft|Example|{UP(Circular-Grating-Element)}CircularGantingEl_sm.jpg|{UP(Circular-Grating-Element)}CircularGantingEl.png]
|}

== Practical Use ==
=== Adding a Circular Granting Element===
# On an Event, click on "Add Element", under 'STIMULUS GENERATION', click on the "Circular Grating' element.
# Now you may re-size the element and change various properties to suit your needs
[imageleft|A red circular grating <br> with high contrast|{UP(Circular-Grating-Element)}CircularGant2_sm.jpg|{UP(Circular-Grating-Element)}CircularGant2.png]<br><br><br><br><br><br><br><br><br><br><br><br>
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Circular Grating Element
