float dx, dy, delta,angle;
float centerX,centerY;
int drawIndex;
int valueR,valueG,valueB;


void setup(){
  size(400,400);
  background(255);
  centerX=random(400);
  centerY=random(400);

  PFont f = loadFont("ArialNarrow-64.vlw");
  textFont(f,20);
}


void draw(){
  if (mousePressed){
    if(keyPressed){
      if(key=='1'){
        drawIndex=1;
        stroke(255,0,0,50);
        rect(mouseX,mouseY,dx,dy);
        line(mouseX,mouseY,centerX,centerY);
        valueR++;
        fill(0);
        text ("red:"+valueR,10,320);
      }
      else if(key=='2'){
        drawIndex=1;
        stroke(0,255,0,50);
        rect(mouseX,mouseY,dx,dy);
        strokeWeight(delta);
        line(mouseY,mouseY,pmouseX,pmouseY);
        line(mouseX,mouseY,centerX,centerY);
        valueG++;
        fill(100);
        text ("green:" +valueG ,10,340);

      }
      else if(key=='3'){
        drawIndex=1;
        stroke(0,255,255,50);
        rect(mouseX,mouseY,dx,dy);
        strokeWeight(delta/5);
        line(mouseX,mouseY,centerX,centerY);
        valueB++;
        fill(100);
        text ("blue:"+ valueB ,10,360);
      }
      else if(key=='4'){
        drawIndex=0;
        background(255);
      }
      keyReleased();
      centerX=random(400);
      centerY=random(400);
    }


    /////////////////////////////
    dx = mouseX - pmouseX;
    dy = mouseY - pmouseY;
    delta = sqrt(dx*dx + dy*dy);

    dx = mouseX - pmouseX;
    dy = mouseY - pmouseY;
    angle = atan2(dy,dx)-PI/2;
    /////////////////////////////

  }

}