How to define a tappable area defined by coordinates

Question

I am writing a small iPad application that draws a shape from a list of coordinates. I would like to tap anywhere inside the shape and have some action occur (i.e. NSLog proving it worked).

Does anyone know how to create a tappable area that is defined by a list of coordinates?

The shape is being drawn on top of a MKMapView.

Answer 1

My approach would be:

Have the points that demark the shape live within a subclass of UIView. Override pointInside:withEvent: for that class. Then look at How can I determine whether a 2D Point is within a Polygon? and use your new knowledge to implement pointInside:withEvent:

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event 
{
    //Left as homework
}

You can use a regular tap gesture recognizer with this :)