pastebin - collaborative debugging

Cone::Cone(int n, int m) : Shape() {
  if (n < 3)
    n = 3;

  double x1,y1,z1,x2,y2,z2;
  x1 = -0.5;
  x2 = 0.5;
  y1 = -0.5;
  y2 = 0.5;
  z1 = .5;
  z2 = -.5;

  Point3 fixedPB( 0, y1, 0 ); //fixed point at the bottom
  Point3 fixedPT( 0, y2, 0 ); //fixed point at the top
  vector<Point3> circumPoints; //vector to hold circumference points

  //do the bottom first
  //begin by solving the circumference points
  float angle = 360/n; //get the angle interval
  for( double i = 0; i < 360; i+=angle ) {

    double px = .5*cos( i * (PI/180) );
    double pz = .5*sin( i * (PI/180) );

    Point3 circP( px, y2, pz );
    circumPoints.push_back(circP);

  }

  //iterate through to create the bottom of the cone
  for( int i = 0; i < n; i++ ) {

    int t = i;

    Point3 p1 = circumPoints.at(t);
    if( t+1 == n )
      t = -1;
    Point3 p2 = circumPoints.at(t+1);

    p1.y = y1;
    p2.y = y1;

    addTriangle( p1, p2, fixedPB );

  }

  /*
   * to make the cone part, we start from the fixed point at the top
   * and move down iterations of fy. the first iteration will not
   * make a square, but all others will.
   */
  float f = m-1;
  for( int i = 0; i < n; i++ ) {

    int t = i;
    //grab the first 2 circumference points
    Point3 p1 = circumPoints.at(t);
    if(t+1 == n) {
      t = -1; //go back to the beginning of the vector
    }
    Point3 p2 = circumPoints.at(t+1);
    p1.y = y1;
    p2.y = y1;
    Point3 tempr = p1;
    Point3 templ = p2;

    for( int i = 0; i < m; i++ ) {
      float fact = f/m;
      float npy = (1-fact)*p1.y + fact*fixedPT.y;
      float npzr = (1-fact)*p1.z + fact*fixedPT.z;
      float npzl = (1-fact)*p2.z + fact*fixedPT.z;
      float npxr = (1-fact)*p1.x + fact*fixedPT.x;
      float npxl = (1-fact)*p2.x + fact*fixedPT.x;

      Point3 uppR( npxr, npy, (-1)*npzr );
      Point3 uppL( npxl, npy, (-1)*npzl );

      if( i == 0 ) { //first iteration, so build a triangle at the top
        addTriangle( uppL, fixedPT, uppR );
      } else {            //all other iterations make squares
        addSquare( uppR, uppL, templ, tempr );
      }

      tempr = uppR;
      templ = uppL;
      f--;
    }
    f = m-1;
  }

}