判断一个点是否在view上

- (void)inArea

{

    CGMutablePathRef pathRef = CGPathCreateMutable();

    CGPathMoveToPoint(pathRef, NULL, 4, 4);
    CGPathAddLineToPoint(pathRef, NULL, 4, 14);
    CGPathAddLineToPoint(pathRef, NULL, 14, 14);
    CGPathAddLineToPoint(pathRef, NULL, 14, 4);
    CGPathAddLineToPoint(pathRef, NULL, 4, 4);
    CGPathCloseSubpath(pathRef);
    CGPoint point=CGPointMake(5, 5);
    CGPoint outPoint=CGPointMake(1, 1);
    if (CGPathContainsPoint(pathRef, NULL, point, NO)) { NSLog(@"point in path!");
    }
    if (!CGPathContainsPoint(pathRef, NULL, outPoint, NO)) { NSLog(@"outPoint out path!");
    }

}