-//Psychlops Code Template\r
+// Motion with glass patterns.\r
+// Ross, J., Badcock, D. R., and Hayes, A. (2000)\r
+// Coherent global motion in the absence of coherent velocity signals.\r
+// Current Biology, 10, 679-682.\r
+///+ Prefix\r
+//// Include Psychlops Package\r
+using Psychlops;\r
+\r
+namespace PsychlopsSilverlightApp\r
+{\r
+\r
+ public class PsychlopsMain\r
+ {\r
+ Psychlops.Widgets.Slider distance, duration, stimulus_type;\r
+ ///- Prefix\r
+\r
+ public void psychlops_main()\r
+ {\r
+ GlassPattern();\r
+ }\r
+\r
+ readonly int DOTNUM = 512;\r
+\r
+ ///+ Stimulus drawing function\r
+ //// A function for stimulus drawing (main body)\r
+ void GlassPattern() {\r
+\r
+ ///+ Preperation\r
+ //// Declare and initialize local variables\r
+ Canvas cnvs = new Canvas(400,400); //Prepare drawing window\r
+ double dotsize = 2;\r
+ double dot_lum = 0.5;\r
+ double bg_lum = 0.2;\r
+ double fieldsize = 300;\r
+ double[] orientation = new double[DOTNUM];\r
+ Rectangle dots = new Rectangle(dotsize, dotsize);\r
+ ///+ prepare dots position\r
+ //// prepare dots position and paired orientation\r
+ Matrix positionmat = Matrix.gen(DOTNUM,2);\r
+ //Math.random(positionmat, -0.5*fieldsize, 0.5*fieldsize);\r
+ positionmat.each( (v) => Math.random(-0.5*fieldsize, 0.5*fieldsize) );\r
+\r
+ \r
+ for(int i=0; i<DOTNUM; i++){orientation[i] = Math.atan2(positionmat[i+1,2], positionmat[i+1,1]);}\r
+ ///- prepare dots position\r
+\r
+\r
+ ///+ Draw Gaussian Envelope\r
+ ////Draw offscreen Gaussian Envelope\r
+ Image envelope = new Image(fieldsize+100, fieldsize+100);\r
+ envelope.clear(new Color(bg_lum)); //clear offscreen image\r
+ double _x, _y;\r
+ for(int i=0; i<fieldsize+100; i++){\r
+ _x=i-0.5*fieldsize-50;\r
+ for(int j=0; j<fieldsize+100; j++){\r
+ _y=j-0.5*fieldsize-50;\r
+ envelope.alpha(i,j,1.0-Math.exp(-((_x*_x+_y*_y)/ (2.0*Math.pow(fieldsize/6.0, 2.0) ))));\r
+ }\r
+ }\r
+ envelope.cache();\r
+ ///- Draw Gaussian Envelope\r
+ ///+ set Independent\r
+ //// set variables and value ranges for interaction\r
+ Interval rng = new Interval();\r
+ stimulus_type = new Psychlops.Widgets.Slider("Stimulus Type", 0.0 <= rng <= 2.0, 1, 1);\r
+ stimulus_type.setValue(0);\r
+ distance = new Psychlops.Widgets.Slider("distance between pairs", 1 <= rng <= 100, 1, 1);\r
+ distance.setValue(3.0);\r
+ duration = new Psychlops.Widgets.Slider("Refresh", 0.0 <= rng <= 10.0, 1, 1);\r
+ duration.setValue(10);\r
+ ///- set Independent\r
+\r
+ int frame = 0;\r
+ while(!Keyboard.esc.pushed()) {\r
+ ///+ position change\r
+ //// Re-randomize position with a desingated interval\r
+ if(frame > duration)\r
+ {\r
+ //Math.random(positionmat, -0.5 * fieldsize, 0.5 * fieldsize);\r
+ positionmat.each((v) => Math.random(-0.5 * fieldsize, 0.5 * fieldsize));\r
+ for (int i = 0; i < DOTNUM; i++) { orientation[i] = Math.atan2(positionmat[i + 1, 2], positionmat[i + 1, 1]); }\r
+ frame = 0;\r
+ }\r
+ ///- position change\r
+ Display.clear(new Color(bg_lum)); //Clear window\r
+\r
+ //// Draw DOTNUM pairs of dots\r
+ for(int i=0; i<DOTNUM; i++){\r
+ ///+ draw first dots\r
+\r
+ ///+ switch stimulus type\r
+ //// draw the second dots to generate selected stimulu type.\r
+ switch((int)stimulus_type){\r
+ ///+ case rotation\r
+ //// Rotation\r
+ case 0:\r
+ dots.centering().shift(positionmat[i+1,1],positionmat[i+1,2]); // move to center position\r
+ dots.shift(-0.5*distance*Math.cos(orientation[i]+0.5*Math.PI),-0.5*distance*Math.sin(orientation[i]+0.5*Math.PI));// move to the first position\r
+ dots.draw(new Color(dot_lum)); // draw first dot\r
+ dots.shift(distance*Math.cos(orientation[i]+0.5*Math.PI),distance*Math.sin(orientation[i]+0.5*Math.PI));// move to the second position\r
+ //cnvs.msg("Rotation", cnvs.getCenter().x, cnvs.getHeight() - 20);\r
+ break;\r
+ ///- case rotation\r
+ ///+ case diversion\r
+ ////Diversion\r
+ case 1:\r
+ dots.centering().shift(positionmat[i+1,1],positionmat[i+1,2]);// move to center position\r
+ dots.shift(-0.5*distance*Math.cos(orientation[i]+0.5*Math.PI),-0.5*distance*Math.sin(orientation[i]+0.5*Math.PI));// move to the first position\r
+ dots.draw(new Color(dot_lum));// draw first dot\r
+ dots.shift(distance*Math.cos(orientation[i]),distance*Math.sin(orientation[i]));// move to the second position\r
+ break;\r
+ ///- case diversion\r
+ ///+ case spiral\r
+ //// Spiral\r
+ case 2:\r
+ dots.centering().shift(positionmat[i+1,1],positionmat[i+1,2]);// move to center position\r
+ dots.shift(-0.5*distance*Math.cos(orientation[i]+0.5*Math.PI),-0.5*distance*Math.sin(orientation[i]+0.5*Math.PI));// move to the first position\r
+ dots.draw(new Color(dot_lum));// draw first dot\r
+ dots.shift(distance*Math.cos(orientation[i]+0.25*Math.PI),distance*Math.sin(orientation[i]+0.25*Math.PI));// move to the second position\r
+ break;\r
+ ///- case spiral\r
+ }\r
+ ///- switch stimulus type\r
+\r
+ dots.draw(new Color(dot_lum)); // Draw dots at a desinated position.\r
+ }\r
+ ///- Draw dots\r
+ envelope.centering().draw(); //Draw offscreen Gaussian onto screen\r
+ Display.flip(); // Flip frame buffers\r
+ frame++;\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+\r
+\r
+\r
+/*\r
+ * //Psychlops Code Template\r
// Please visit following web site to get sample codes.\r
// http://psychlops.sourceforge.jp/ja/?StartCode\r
// CodeDresser at following address is also available to view the code.\r
\r
}\r
\r
+*/\r
+\r
/*\r
public void psychlops_main() {\r
\r
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