Question

How would you build the simpliest way a MKMapRect with 2 MKMapPoints, assuming that you don’t know where are those points (the first can be lower or upper, more on the left or the right, compared to the second one).

Answer 1

Here’s one way (mp1 and mp2 are MKMapPoint pairs of opposite corners):

MKMapRect mr = MKMapRectMake (fmin(mp1.x, mp2.x),
                              fmin(mp1.y, mp2.y),
                              fabs(mp1.x - mp2.x),
                              fabs(mp1.y - mp2.y));