Merge pull request #47 from Remi-Gau/remi_dev

add a post-initialization function

Author: Remi-Gau

README.md

@@ -80,6 +80,31 @@ Any details of the experiment can be changed in `setParameters.m` (e.g., experim
   - Instructions
   - Task #1 parameters
 
+#### Let the scanner pace the experiment
+
+Set `cfg.pacedByTriggers.do` to `true` and you can then set all the details in this `if` block
+
+```matlab
+% Time is here in in terms of number repetition time (i.e MRI volumes)
+if cfg.pacedByTriggers.do
+
+  cfg.pacedByTriggers.quietMode = true;
+  cfg.pacedByTriggers.nbTriggers = 1;
+
+  cfg.timing.eventDuration = cfg.mri.repetitionTime / 2 - 0.04; % second
+
+  % Time between blocs in secs
+  cfg.timing.IBI = 0;
+  % Time between events in secs
+  cfg.timing.ISI = 0;
+  % Number of seconds before the motion stimuli are presented
+  cfg.timing.onsetDelay = 0;
+  % Number of seconds after the end all the stimuli before ending the run
+  cfg.timing.endDelay = 2;
+
+end
+```
+
 ### 3.3. <a name='subfundoDotMo'></a>subfun/doDotMo
 
 #### 3.3.1. <a name='Input:'></a>Input:

lib/CPP_PTB

@@ -0,0 +1,27 @@
+function varargout = postInitializationSetup(varargin)
+    % varargout = postInitializatinSetup(varargin)
+
+    % generic function to finalize some set up after psychtoolbox has been
+    % initialized
+
+    cfg = deal(varargin{:});
+
+    cfg.dot.matrixWidth = cfg.screen.winWidth;
+
+    % Convert some values from degrees to pixels
+    cfg.dot = degToPix('size', cfg.dot, cfg);
+    cfg.dot = degToPix('speed', cfg.dot, cfg);
+
+    % Get dot speeds in pixels per frame
+    cfg.dot.speedPixPerFrame = cfg.dot.speedPix / cfg.screen.monitorRefresh;
+
+    cfg.aperture = degToPix('xPos', cfg.aperture, cfg);
+
+    % dots are displayed on a square with a length in visual angle equal to the
+    % field of view
+    cfg.dot.number = round(cfg.dot.density * ...
+        (cfg.dot.matrixWidth / cfg.screen.ppd)^2);
+
+    varargout = cfg;
+
+end

subfun/postInitializationSetup.m

@@ -0,0 +1 @@
+v0.0.1

version.txt

@@ -33,21 +33,7 @@
     %% Init the experiment
     [cfg] = initPTB(cfg);
 
-    cfg.dot.matrixWidth = cfg.screen.winWidth;
-
-    % Convert some values from degrees to pixels
-    cfg.dot = degToPix('size', cfg.dot, cfg);
-    cfg.dot = degToPix('speed', cfg.dot, cfg);
-
-    % Get dot speeds in pixels per frame
-    cfg.dot.speedPixPerFrame = cfg.dot.speedPix / cfg.screen.monitorRefresh;
-
-    cfg.aperture = degToPix('xPos', cfg.aperture, cfg);
-
-    % dots are displayed on a square with a length in visual angle equal to the
-    % field of view
-    cfg.dot.number = round(cfg.dot.density * ...
-        (cfg.dot.matrixWidth / cfg.screen.ppd)^2);
+    cfg = postInitializationSetup(cfg);
 
     [el] = eyeTracker('Calibration', cfg);