Vec2d* smoothPath(Vec2d * _PointArray, int _numPoints, float _smooth){

Vec2d p;

//p2[0]=_PointArray[0];

for (int i =1; i< _numPoints -1;i++){

 p=(_PointArray[i-1]*_smooth/2) + (_PointArray[i]*(1.0 - _smooth)) + (_PointArray[i+1]*_smooth/2);//smooth fraction has to add to 1 

   p2[i]=p;

}

return p2;

}

void drawPoints(){

float spacing=30;

  //printf( "%f %f\n",  mouseDX,mouseDY );

  Vec2d k = Vec2d(0,0);

  Vec2d* smoothPoints;

 // if ( mouseDX != prevX || mouseDY != prevY ){ //without spacing

  if ((mouseDX - spacing >= prevX || mouseDX + spacing <= prevX) || (mouseDY - spacing >= prevY || mouseDY+spacing<= prevY)){

     k.x =  mouseDX;

     k.y =  mouseDY;

     prevX = k.x;

     prevY = k.y;

// printf( "%d\n",  pointCounter );

drawLinePoints[pointCounter] = k;

pointCounter++;

    // printf( "%f %f\n",  mouseDX, mouseDY );

  }

///draw regular

glBegin(GL_LINE_STRIP);

   glColor3f( 0,0,255 );

   for (int i = 1; i < pointCounter; i++){// +1 gets rid of zero zero point

    glVertex2f(drawLinePoints[i].x, drawLinePoints[i].y); // puts points along line taake out for line draw

// printf( "%f %f\n", p.x,p.y);

}

   glEnd();

//draw smooth

     smoothPoints = smoothPath( drawLinePoints, pointCounter, .9);

     glBegin(GL_LINE_STRIP);

     glColor3f( 255,0,0 );

Vec2d offset(0,100);

  for (int i = 1; i < pointCounter-2; i++){// +1 gets rid of zero zero point

Vec2d sv = (Vec2d) smoothPoints[i] ;// move it down

     glVertex2f(sv.x, sv.y); // puts points along line taake out for line draw

// printf( "%f %f\n", p.x,p.y);

}

glEnd();

}