Vec2d* circle(  Vec2d _Center = Vec2d( 0, 0 ), int _radius =1, int _points = 360){

     Vec2d Circle[_points];

      glBegin( GL_LINE_LOOP ); 

     for(int i=0;i<_points;i++) { 

        float angle = ((360)/_points)*i; // 360 divided into degree segments based on points multiplied by what point your on

             Circle[i] = Vec2d( _radius * helpers::d_cos(angle)+_Center.x, _radius*helpers::d_sin(angle) );

             glVertex3f( Circle[i].x, _Center.y ,Circle[i].y );

     }        

  glEnd();

   return Circle;

} 

void  drawWireframeCylinder(float _radius = 50, float _height = 100, int _steps = 10){

   int apart=3;// spacing

   int shapePoints = 360;

   float spacing = _height/_steps;

   Vec2d center(0,0);

   for(int i = 0;i<spacing; i++ ){

    center.y = (i*spacing)*apart; // draw up progresivly

Vec2d* dpoints = circle(center,100,360);

  //draw in wire

  int lineSpacing = 4;

    for ( int j = lineSpacing; j<shapePoints; j += lineSpacing){

      // glColor3f( 1,0,1 );

        glBegin( GL_LINE_LOOP ); 

          glVertex3f( dpoints[j].x, center.y ,dpoints[j].y );

  glVertex3f( dpoints[j].x, 0 ,dpoints[j].y );  // y is z in Vec2d object should make a Vec3d

    glEnd();

  }

} 

}   

////////////////////////////****//////////////////////////////////////////////////////

void displayFunc ( void )  //arg void returns void

{

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); //clears buffers(what buffers?) by setting bit mask or.

//printf(" %f", mouseX);

glLoadIdentity();

glTranslatef(0.0f, mouseX-500, -200);

glColor3f( 0,1,1 );

  //circle();

drawWireframeCylinder(); 

  /*

  glBegin(GL_LINE_LOOP);

  glVertex3f(-1.0f, -0.5f, 0.0f);

  glVertex3f(1.0f, -0.5f, 0.0f);

  glVertex3f(1.0f, -1.0f, 0.0f);

  glVertex3f(-1.0f, -1.0f, 0.0f);

  glEnd();

  */

/*glBegin(GL_TRIANGLES);

glColor3f(1.0f, 0.0f, 0.0f);

glVertex3f(-1.0f, -0.5f, 0.0f);    // A

glColor3f(0.0f, 1.0f, 0.0f);

glVertex3f( 1.0f, -0.5f, 0.0f);    // B

glColor3f(0.0f, 0.0f, 1.0f);

glVertex3f( 0.0f,  0.5f, 0.0f);    // C

glEnd();*/

glutPostRedisplay(); //tags the current window to be redisplayed or shown through the

                    //next iteration loop.

glutSwapBuffers(); //calls for the display of a the current buffer for the curretn window 

                  // i assume to cut down on jerky motion

}