Objective-C generating a random point which lies in given cgrect

Question

my requirement is generating a random point in a given area, i.e i have an Cg Rectangle of some space and I need to generate a random point in this rectangle ..

how can I proceed in this scenario?

Answer 1

- (CGPoint)randomPointInRect:(CGRect)r
{
    CGPoint p = r.origin;

    p.x += arc4random_uniform((u_int32_t) CGRectGetWidth(r));
    p.y += arc4random_uniform((u_int32_t) CGRectGetHeight(r));

    return p;
}

Answer 2

The original question asks specifically for Objective-C, but a Swift solution might help someone.

extension CGRect {
    func randomPointInRect() -> CGPoint {
        let origin = self.origin
        return CGPointMake(CGFloat(arc4random_uniform(UInt32(self.width))) + origin.x, CGFloat(arc4random_uniform(UInt32(self.height))) + origin.y)
    }
}