Function boostPointFromPoint3d

src/utilities/geometry/Intersection.cpp:324–334

convert a Point3d to a BoostPoint

// convert a Point3d to a BoostPoint
boost::tuple<double, double> boostPointFromPoint3d(const Point3d& point3d, std::vector<Point3d>& allPoints, double tol) {
  OS_ASSERT(std::abs(point3d.z()) <= tol);

  // simple method
  //return boost::make_tuple(point3d.x(), point3d.y());

  // detailed method, try to combine points within tolerance
  const Point3d resultPoint = getCombinedPoint(point3d, allPoints, tol);

  return boost::make_tuple(resultPoint.x() * scaleBy, resultPoint.y() * scaleBy);
}

// convert vertices to a boost polygon, all vertices must lie on z = 0 plane
boost::optional<BoostPolygon> boostPolygonFromVertices(const std::vector<Point3d>& vertices, std::vector<Point3d>& allPoints, double tol) {