PipeConnectionDefinition.cpp

Direction PipeConnectionDefinition::calculateDirection(const Vector& offset, const BoundingBox& boundingBox)
{
  // diagonal direction in order to fail when load is not successful
  Direction direction(Direction::NorthEast);
  MapPosition leftTop = boundingBox.getRotatedLeftTop();
  MapPosition rightBottom = boundingBox.getRotatedRightBottom();

  // calculate direction from the bounding box
  if (leftTop.y < offset.dy && rightBottom.y > offset.dy)
  {
    if (leftTop.x > offset.dx && leftTop.x < offset.dx + 1)
      direction = Direction::West;
    else if (rightBottom.x < offset.dx && rightBottom.x > offset.dx - 1)
      direction = Direction::East;
  }
  else if (leftTop.x < offset.dx && rightBottom.x > offset.dx)
  {
    if (leftTop.y > offset.dy && leftTop.y < offset.dy + 1)
      direction = Direction::North;
    else if (rightBottom.y < offset.dy && rightBottom.y > offset.dy - 1)
      direction = Direction::South;
  }
  if (direction.isDiagonal())
    throw std::runtime_error(ssprintf("Invalid pipe connections specification for offset %s. The offset must be outside of the entity bounding-box",
                                      MapPosition(MapPosition(), offset).str().c_str()));
  return direction;
}