int largo;
float[] x;
float[] y;
float[] z;
int gap = 33;
float noiseX,noiseY,noiseZ,xoff,yoff,zoff,xwalk,ywalk,zwalk,mx2,my2,mz2;
int ind;
float xBin,yBin,avgX,avgY;

void setup(){
  size(640,480,P3D);
  noiseX = 0.012;
  noiseY = 0.023;
  noiseZ = 0.008;
  largo = 221;
  x=new float[largo]; 
  y=new float[largo];
  z=new float[largo];
}

void draw(){
  xoff = xoff + noiseX;
  yoff = yoff + noiseY;
  zoff = zoff + noiseZ;
  xwalk = sin(noise(xoff)) * width;
  ywalk = sin(noise(yoff)) * height;
  zwalk = noise(zoff) * height;
  background(0);
  noFill();
  strokeWeight(0.5);

  for(int i =1;i<largo;i++){
    x[i-1] = x[i];
    y[i-1] = y[i]; 
    z[i-1] = z[i]; 
  }
  x[largo-1]=xwalk;
  y[largo-1]=ywalk;
  z[largo-1]=zwalk;

  make();

}


void make(){
  beginShape();
  for(int i=0; i<largo; i++) {
    stroke(i,12,198,i/3);
    float mx = x[i];
    float my = y[i];
    float mz = z[i];

    ind = constrain(i+gap,0,largo-1);
    mx2 = x[ind];
    my2 = y[ind];
    mz2 = z[ind];
    curveVertex(mx,my,-mz);
    curveVertex(mx2,my2,-mz2);
  }

  endShape();
  camFollow();

}

void camFollow(){
  xBin = 0;
  yBin = 0;
  int largo_ = 55;
  int plus = largo - largo_;
  for (int i=0;i<largo_;i++){
    xBin += x[i+plus];
    yBin+= y[i+plus];
  }
  avgX = xBin/largo_;
  avgY = yBin/largo_;
  camera(xwalk,ywalk,100,
  avgX,avgY,-300,
  0.0,1.0,0);
  spotLight(255,255,0,
  avgX,avgY,300,
  0,-0.5,-1,
  PI, 2);
}

void saveFrames(int numFrames){
  if (frameCount <= numFrames) {
    saveFrame("woim-####.tif");
  }
}