class Ngon { 

  float x,y;
  Ngon(float xCen, float yCen, float radius, float vert, float tVal){

    float r,s,t,u,xStep,yStep;
    
    u = tVal*vert;
    r = u % 1;
    s = (u-r)/vert;
    t = s+1/vert;

    xStep = (xCen+radius*sin(t*PI*2.0))-(xCen+radius*sin(s*PI*2.0));
    yStep = (yCen+radius*cos(t*PI*2.0))-(yCen+radius*cos(s*PI*2.0));


    x = xCen+radius*sin(s*PI*2.0)+xStep*r;
    y = yCen+radius*cos(s*PI*2.0)+yStep*r;
  }
}