int dim =225;

color[] goodcolor = {#000000, #6b6556, #a09c84, #908b7c, #79746e, #755d35, #937343, #9c6b4b, #ab8259, #aa8a61, #578375, #f0f6f2, #d0e0e5, #d7e5ec, #d3dfea, #c2d7e7, #a5c6e3, #a6cbe6, #adcbe5, #77839d, #d9d9b9, #a9a978, #727b5b, #6b7c4b, #546d3e, #47472e, #727b52, #898a6a, #919272, #AC623b, #cb6a33, #9d5c30, #843f2b, #652c2a, #7e372b, #403229, #47392b, #3d2626, #362c26, #57392c, #998a72, #864d36, #544732 };
color somecolor() {
  // pick some random good color
  return goodcolor[int(random(goodcolor.length))];
}
int lastx, lasty;
color colornow;
void setup() {
  size(2*dim,dim);
  colornow=somecolor();
  background(255); 
  stroke(0);
  line(dim,0,dim,dim);
}

void draw(){
}
void keyPressed(){
  saveFrame();
  background(255); 
  stroke(0);
  line(dim,0,dim,dim);
}
void mousePressed(){
   colornow=somecolor(); 
   lastx=mouseX;
   lasty=mouseY;
}
void mouseDragged() {
  if(mouseX<dim){
    stroke(colornow);
    line(mouseX,mouseY,lastx, lasty);
    lastx=mouseX;
    lasty=mouseY;
  float w = 2*PI;         // 2D space width
  float dx = w / dim;    // Increment x this amount per pixel
  float x = 0;          // Start x at -1 * width / 2
    stroke(colornow,10);
  for (int i = 0; i < dim-1; i++) {
    //compute the value
    float r = mouseX*cos(x)+mouseY*sin(x);
    r=r+dim;
    r*=0.5;
    point(i+dim,r);     // Scale to between 0 and 255
    x += dx;                  // Increment x
  }
  }
}