// use begin / endshape
// method to return size
float arrowWidth(float h) { 
  return (3*h)/2;
}

static int leftArrow = 1;
static int rightArrow = 2;

class Arrow {
  int direction;
  float x;
  float y;
  float h;
  float w;

  /*static float getWidth(float h) { 
   return (3*h)/2;
   }*/

  public Arrow(int direction, float x, float y, float h) { // add color
    this.direction = direction;
    this.x = x;
    this.y = y;
    this.h = h;
    this.w = arrowWidth(this.h);
  }

  void draw() {
    float h3 = h/3;
    float h2 = h/2;
    float midx = x+h;

    beginShape();
    if (direction == rightArrow) {
      vertex(x, y+h3);
      vertex(x, y+2*h3);
      vertex(midx, y+2*h3);
      vertex(midx, y+h);
      vertex(midx+h2, y+h2);
      vertex(midx, y);
      vertex(midx, y+h3);
    }
    else if (direction == leftArrow) {
      vertex(midx+h2, y+h3);
      vertex(midx+h2, y+2*h3);
      vertex(x+h2, y+2*h3);
      vertex(x+h2, y+h);
      vertex(x, y+h2);
      vertex(x+h2, y);
      vertex(x+h2, y+h3);
    }
    endShape(CLOSE);  
  }

  boolean contains(float x, float y) {
    return (x>=this.x && x<=this.x+this.w && y>=this.y && y <= this.y+this.h);
  }
}