boolean redFlag = true;
boolean greenFlag = true;
boolean blueFlag = true;

int myRed = int(random(255));
int myGreen = int(random(255));
int myBlue = int(random(255));

int myWidth = 500;
int myHeight = 500;

int xLoc = int(random(myWidth));
int yLoc = int(random(myHeight));

int oldXLoc = mouseX; 
int oldYLoc = mouseY;
int newXLoc, newYLoc;
//int c = 0;
int d = 0;



void setup(){
  colorMode(RGB, 255);
  size(myWidth, myHeight);

  background(0);
  cursor(CROSS);
  
  
}



void loop(){
 
    if(myRed>=255){
       redFlag = false;
      }else if(myRed<=0){
        redFlag = true;
      }
      
    if(myGreen>=255){
       greenFlag = false;
      }else if(myGreen<=0){
       greenFlag = true;
      }
      
    if(myBlue>=255){
        blueFlag = false;
      }else if(myBlue<=0){
        blueFlag = true;
      }

  
    
    if(redFlag){
        myRed++;
      }else{
        myRed--;
      }
      
     if(greenFlag){
        myGreen+=5;
      }else{
        myGreen-=5;
      }
      
      if(blueFlag){
        myBlue+=25;
      }else{
        myBlue-=25;
      }
      
      color myColor = color(myRed, myGreen, myBlue);
      fill (myColor);
     // noStroke();
      stroke(myColor);
      
      if(mousePressed == true){
        if(d==0){
         oldXLoc = mouseX;
         oldYLoc = mouseY;
         }
        //drawMe();
        d++;
        }
        
      if (keyPressed){
        if(key=='z'){
         background(0);
         }
        }

}


void mouseDragged(){
  drawMe();
  }
  
void mouseReleased(){
  d=0;
  }



void drawMe(){

  newXLoc = mouseX;
  newYLoc = mouseY;
  //int c=1;
  for(int c=0; c<500; c++){
     float rotation = cos(c);
     rotate(rotation);
     line(oldXLoc,oldYLoc, newXLoc, newYLoc);
     //ellipse(newXLoc, newYLoc, 25, 25);
     smooth();
   }
   //c++;
   oldXLoc = newXLoc;
   oldYLoc = newYLoc;
 
}