+using Psychlops;\r
+\r
+namespace PsychlopsSilverlight4test\r
+{\r
+\r
+ public class PsychlopsMain\r
+ {\r
+\r
+ Psychlops.Canvas cnvs;\r
+ int i;\r
+ double x, y, z, t, p, temp, xx, yy;\r
+\r
+ //Set Target Initial Value\r
+ double TargetEcce = 100.0, TargetSize = 5.0, TargetNumber = 5, Rotate = 0.0;\r
+\r
+ //Set Background Initial Value\r
+ double DotNumber = 50, thetaSpeed = 3.0, Axis = 0.0, BGRadii = 150, BGSize = 5.0;\r
+\r
+ public void psychlops_main()\r
+ {\r
+ cnvs = new Canvas(500, 500);\r
+\r
+ //Declare background dots and target\r
+ Rectangle[] BGDot = new Rectangle[2048];\r
+ for(int i=0; i<2048; i++){\r
+ BGDot[i]=new Rectangle();\r
+ }\r
+ Rectangle[] Target= new Rectangle[10];\r
+ for(int i=0; i<10; i++){\r
+ Target[i]=new Rectangle();\r
+ }\r
+\r
+\r
+ //Declare Matrix to keep back ground dots' coordinate value\r
+ double[] DotX=new double[2048];\r
+ double[] DotY = new double[2048];\r
+\r
+\r
+ //Set Independent variables to manipulate\r
+\r
+\r
+ //Initialize positions of background dots\r
+ for(int i=0; i<2048; i++){\r
+ t=2.0*Math.PI*Math.random(1.0);\r
+ p=2.0*Math.PI*Math.random(1.0);\r
+ DotX[i]=t;\r
+ DotY[i]=p;\r
+\r
+ x=BGRadii*Math.cos(t)*Math.cos(p);\r
+ y=BGRadii*Math.sin(t)*Math.cos(p);\r
+ BGDot[i].set(BGSize, BGSize);\r
+ BGDot[i].centering().shift(x,y);\r
+ }\r
+\r
+ //Initialize positions of targets\r
+ for(int i=0; i<10; i++)Target[i].set(TargetSize, TargetSize);\r
+\r
+ double COS, SIN;\r
+ DotNumber = 200;\r
+ //Main stimulus loop\r
+ while(true){\r
+ //Clear the main window\r
+ cnvs.clear(Color.green);\r
+\r
+\r
+ temp=Axis/360*2*Math.PI;\r
+ COS=Math.cos(temp);\r
+ SIN=Math.sin(temp);\r
+\r
+ //Calculate positions of background dots and set them\r
+ for(int i=0; i<DotNumber; i++){\r
+ //Calculate in polar coordinate\r
+ t=DotX[i]+2.0*Math.PI*thetaSpeed/360.0;\r
+ p=DotY[i];\r
+\r
+ //Save current position\r
+ DotX[i]=t;\r
+\r
+ //Convert to Decartes coordinate\r
+ x=BGRadii*Math.cos(t)*Math.cos(p);\r
+ y=BGRadii*Math.sin(t)*Math.cos(p);\r
+ z=BGRadii*Math.sin(p);\r
+ xx=x;\r
+ yy=SIN*y+COS*z;\r
+\r
+ //Set Dotsize and Draw them\r
+ BGDot[i].set(BGSize, BGSize);\r
+ BGDot[i].centering().shift(xx,yy);\r
+ BGDot[i].draw( Color.blue );\r
+ }\r
+\r
+ //Calculate positions of targets and set them\r
+ temp=Rotate*2*Math.PI/360.0;\r
+ for (int i = 0; i < 5; i++)\r
+ {\r
+ t = 2.0 * Math.PI/TargetNumber;\r
+ x = TargetEcce*Math.cos(i*t+temp);\r
+ y = TargetEcce*Math.sin(i*t+temp);\r
+ Target[i].centering().shift(x,y);\r
+ Target[i].fill = Color.yellow;\r
+ Target[i].draw();\r
+ }\r
+\r
+ //Reflect drawing at the next frame;\r
+ cnvs.flip();\r
+ }\r
+ }\r
+ }\r
+\r
+}\r
+\r
+/*\r