C++ Code that checks if a point lies within a rectangle. The rectangle can be aligned on any axis.

inRect

// Check if point is inside the space of the rectangle.
// Note the class defs and the operator overloading.

bool inRect (rectangle rectangle, point point) {

  class point length, breadth, point_centre;
  bool result;


  sort_points(rectangle);

  if (point.x <= 0 && point.y <= 0)
    point_centre = ((rectangle.points[2] - rectangle.points[0])) - point*2;
  else
    point_centre = point*2 - ((rectangle.points[2] - rectangle.points[0]));

  length = rectangle.points[1] - rectangle.points[0];

  breadth = rectangle.points[2] - rectangle.points[1];

  if (
      ((point_centre - length) * length < 0) && ((point_centre + length) * length >= 0) &&
      ((point_centre - breadth) * breadth < 0) && ((point_centre + breadth) * breadth >= 0)
     ) result = true;
  else result = false;

  return result;
}