import codeanticode.gsvideo.*;

GSCapture cam;
PImage img;
int[][][] queues;
int[] qLengths;
int pointer;
float maxR;
void setup() {
    
    size(640,480 );
    img = new PImage(320, 240);

    //init cam
    cam = new GSCapture(this, 320, 240);



    frameRate(20);
    background(0);
    //for circular effect
    maxR = sqrt((cam.width/2)*(cam.width/2) + (cam.height/2)*(cam.height/2));  

    initQueues();

}

void initQueues() {
    initQlenghts();
    //showQueues();
    queues = new int[cam.width][cam.height][];
    for (int y = 0; y < cam.height; y++){
	for (int x = 0; x < cam.width; x++){
	    queues[x][y] = new int[getQueueLength(x,y)];
	}
    }
}

void initQlenghts() {
    qLengths = new int[cam.width*cam.height + cam.width];
    for (int y = 0; y < cam.height; y++){
	for (int x = 0; x < cam.width; x++){
	    qLengths[y*cam.width + x] = 1+ ySlit(x,y);
	}
    }
}


int bumps2(int x, int y) {
    int w = cam.width/3;
    int h = cam.height/3;
    int tmpx = x%w;
    int tmpy = y%h;
    float bump = sqrt((w/2-tmpx)*(w/2-tmpx) + (h/2-tmpy)*(h/2-tmpy));
    float val = norm(bump, 0, sqrt((w/2)*(w/2) + (h/2)*(h/2)));
    return (int) (10-val*10);

}



int bumps(int x, int y) {
    float xb = 3*TWO_PI/(cam.width);
    float yb = 3*TWO_PI/(cam.height);
    float bump = 4 + (sin(x*xb))+ (cos(y*yb));
    return (int) (bump);
}

int getQueueLength(int x, int y) {
    return qLengths[y*cam.width + x];
}

int speed = 160;
int xSlit(int x,int y) {
    float xnorm = norm(x,0, cam.width);
    return (int) (xnorm*speed);
}

int ySlit(int x,int y) {
    float ynorm = norm(y,0, cam.width);
    return (int) (ynorm*speed);
}


int circular(int x, int y) {
    float r = sqrt((cam.width/2-x)*(cam.width/2-x) + (cam.height/2-y)*(cam.height/2-y));
    float normedR = norm(r,0,maxR);
    float fun = sin(normedR*PI);
     return (int) ((1-normedR)*50);
     //return (int) (fun*20);
} 



void draw() {
  if (cam.available()) {
    cam.read();
    cam.loadPixels();
    pointer++; //pointer = ++pointer%cam.width;
    // Copy a column of pixels from the middle of the video 
    // To a location moving slowly across the canvas.
    img.loadPixels();

    for (int y = 0; y < cam.height; y++){
	for (int x = 0; x < cam.width; x++){
	    int rowIdx = y*cam.width;
	    queues[x][y][pointer%getQueueLength(x,y)] = cam.pixels[rowIdx+x];
	    img.pixels[rowIdx+x] = queues[x][y][(pointer+1)%getQueueLength(x,y)];

	}
    }
    img.updatePixels();
    image(img,0,0,640,480);

  }
}


void showQueues() {
    for (int y = 0; y < cam.height; y++){
	for (int x = 0; x < cam.width; x++){
	    print(getQueueLength(x,y) + "  ");
	}
	println();
    }
}