CGPath does not recognize a click inside of it

Question

I have set out a CGPath like this.

- (void)drawRect:(CGRect)rect
{
    UIImage *myImage = [UIImage imageNamed:@"mapBelgie.png"];
    CGRect imageRect = self.bounds;
    [myImage drawInRect:imageRect];
    CGContextRef context = UIGraphicsGetCurrentContext();

    CGMutablePathRef pathLommel = CGPathCreateMutable();

    CGPathMoveToPoint(pathLommel, NULL,686,80);
    CGPathMoveToPoint(pathLommel, NULL,729,76);
    CGPathMoveToPoint(pathLommel, NULL,747,68);
    CGPathMoveToPoint(pathLommel, NULL,773,94);
    CGPathMoveToPoint(pathLommel, NULL,831,111);
    CGPathMoveToPoint(pathLommel, NULL,788,220);
    CGPathMoveToPoint(pathLommel, NULL,658,247);
    CGPathMoveToPoint(pathLommel, NULL,679,182);
    CGPathMoveToPoint(pathLommel, NULL, 637,176);
    CGPathMoveToPoint(pathLommel, NULL,674,148);
    CGPathMoveToPoint(pathLommel, NULL, 624,140);
    CGPathMoveToPoint(pathLommel, NULL, 700,108);
    CGPathMoveToPoint(pathLommel, NULL, 686,80);

    CGPathCloseSubpath(pathLommel);

    CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor);

    CGContextSetLineJoin(context, kCGLineJoinMiter);
    CGContextSetLineWidth(context, 1.0f);
    CGContextAddPath(context, pathLommel);
    arrayPaths = [[NSMutableArray alloc]init];
    [arrayPaths addObject:CFBridgingRelease(pathLommel)];

    CGContextDrawPath(context, kCGPathFillStroke);
}

Now When i click on a view. I want to check if this click was inside the path.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    CGPoint c = [[touches anyObject] locationInView: self];
    NSLog(@"point is X = %f and Y = %f",c.x,c.y );
    struct CGPath *pat = (__bridge struct CGPath *)([arrayPaths objectAtIndex:0]);
    CGPathRef  strokedPath = CGPathCreateCopy(pat);

    BOOL pointIsNearPath = CGPathContainsPoint(strokedPath, NULL, c, NO);
    if (pointIsNearPath){
        NSLog(@"Clicked in the path");
        region = 0;
    }
    [self.delegationListener didPressRegion:region];
}

Now the strange thing is. When I click I get this log

2013-06-14 11:42:29.372 Architab[27742:c07] point is X = 703.000000 and Y = 94.000000

That is for 100% sure in the path. But I don't geet the log of "Clicked in the path". Can anybody help me with this?

thanks!

you have only points in your path, no lines. So there is no inside or outside. — Jonathan Cichon, Jun 14 '13 at 09:48

amar · Answer 1 · 2013-06-14T10:01:31.683

0

Use this

 CGContextPathContainsPoint(context, point, mode)  //the names of the parameters are explanatory use mode=kCGPathStroke;

call a function inside it make a path in loop and call the above method on the path first make a path.

edited Jun 14 '13 at 10:01

answered Jun 14 '13 at 09:52

amar

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CGPath does not recognize a click inside of it

1 Answers1