- { \r
- cnvs = new Canvas(500, 500);\r
-\r
- Interval rng = new Interval();\r
- thetaSpeed = new Psychlops.Widgets.Slider("Label" , -10 <= rng <= 10, 3.0);\r
- DotNumber = new Psychlops.Widgets.Slider("DotNum", 0 <= rng <= 100, 50.0);\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();\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