UIBezierPath containsPoint
- (BOOL)containsPoint:(CGPoint)point
Parameters
point
The point to test against the path, specified in the path object's coordinate system.
Return Value of [UIBezierPath containsPoint]
YES if the point is considered to be within the path’s enclosed area or NO if it is not.
Discussion of [UIBezierPath containsPoint]
The receiver contains the specified point if that point is in a portion of a closed subpath that would normally be painted during a fill operation. This method uses the value of the usesEvenOddFillRule property to determine which parts of the subpath would be filled.
A point is not considered to be enclosed by the path if it is inside an open subpath, regardless of whether that area would be painted during a fill operation. Therefore, to determine mouse hits on open paths, you must create a copy of the path object and explicitly close any subpaths (using the closePath method) before calling this method.
UIBezierPath containsPoint example.
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
touchStart = [[touches anyObject] locationInView:self];
isResizingUL = [upperLeft containsPoint:touchStart];
isResizingUR= [upperRight containsPoint:touchStart];
}
touchStart = [[touches anyObject] locationInView:self];
isResizingUL = [upperLeft containsPoint:touchStart];
isResizingUR= [upperRight containsPoint:touchStart];
}
Example of [UIBezierPath containsPoint].
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];
if ([self.bezierPath containsPoint:touchPoint])
{
// do stuff
}
}
{
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];
if ([self.bezierPath containsPoint:touchPoint])
{
// do stuff
}
}
UIBezierPath containsPoint example.
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if(![[self myPath] containsPoint:[[touches anyObject] locationInView:self]]) return;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title" message:@"Some message" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles: nil];
//After some time
[alert show];
[alert release];
}
if(![[self myPath] containsPoint:[[touches anyObject] locationInView:self]]) return;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title" message:@"Some message" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles: nil];
//After some time
[alert show];
[alert release];
}
