polygon by Rickie

for (int i =0; i<12; i++)    {       glBegin(GL_POLYGON);       glColor3f(1,1,1);       glVertex2f(i*width,0);       glVertex2f(i*width,height[i]);       glVertex2f((i*width)+width-1,height[i]);       glVertex2f((i*width)+width-1,0);       glEnd();    }