float s = 0;
float c = 0;
float xoff = 0.0;
float yoff = 0.0;
float x2off = 0.0;
float y2off = 0.0;
float x3off = 0.0;
float y3off = 0.0;
float blue = 0.0;
int frameadvance = 0;
int nth = 0;
int movieframes;

void setup() {  
  size(1280, 720);
 background(0);
 frameRate(25);
}

void draw() { 
  strokeWeight((sin(s)+1)*1.1+0.5); // line width variation
//stroke(0);
blue = (sin(c)+1.2)*80-25;
  stroke(285-blue,noise(xoff)*255, noise(yoff)*255, 40); //r,g,b,a
noFill();
/*
curveVertex(noise(xoff) *width,  noise(c) *width);
curveVertex(xoff,  noise(c)*width);
curveVertex(noise(xoff) *width,  noise(s) *width);
curveVertex(xoff,  noise(s+c)*width);
curveVertex(s*50, noise(xoff) *width);
curveVertex(c*50, noise(xoff) *width);
*/
bezier(noise(xoff)*width*2, noise(yoff)*height*2, noise(s)*width*2, noise(c)*height*2, noise(x2off)*width, noise(y2off)*height, noise(x3off)*width, noise(y3off)*height);
// bezier(x1, y1, x2, y2, x3, y3, x4, y4)

xoff +=0.001; //first andchor point
yoff +=0.002;
s +=0.003; //first control point and line width
c +=0.005; //first control point and line color
x2off +=0.005; //2nd control point
y2off +=0.006;
x3off +=0.005; // end anchor point
y3off +=0.004;

  nth = 2; // save only every nth frame
  movieframes = 20; // how many still images to save
  if(frameCount <= movieframes*nth && frameCount %nth ==0) { 
  saveFrame("/Volumes/SiiSooGate/testi" + frameadvance +".PNG");
  frameadvance++;
  } else if(frameadvance >= movieframes) {
    print("finished"); 
  }
}