uibezierpath

I'm trying to create a UIView in UIScrollView that contains just a simple grid (lines as rows and columns) drown by UIBezierPath or using the CG functions. The problem is, that when I have larger content size of the UIScrollView (as well as the larger subview), during the drawing of the grid huge amount of memory is allocated (50MB or more). UIViewController which includes just UIScrollView over whole scene - adding subview in viewDidLoad: @interface TTTTestViewController() @property (weak, nonatomic) IBOutlet UIScrollView *scrollView; @end @implementation TTTTestViewController -(void

This question already has an answer here: Drag UIView around Shape Comprised of CGMutablePaths 1 answer I have a UIBezierPath (curved like an '8', with only 4 points in it) and I need to make some kind of CGPoint-Array out of it. Any ideas? thanx! edit: I have my bezier initlialized like that -(void) initBezier { theBezierPath = [UIBezierPath bezierPath]; [theBezierPath moveToPoint:P(211.00, 31.00)]; [theBezierPath addCurveToPoint:P(870.00, 191.00) controlPoint1:P(432.00, -11.00) controlPoint2:P(593.00, 209.00)]; [theBezierPath addCurveToPoint:P(731.00, 28.00) controlPoint1:P(1061.95, 178.53)

I drew the above BezierPath by doing: // location is where the user touches screen. // location will be the maximum of the graph CGPoint origin = CGPointMake(xStart, 620.0); CGPoint endpt = CGPointMake(xEnd, 620.0); CGPoint midpt1 = midPointForPoints(origin, location); CGPoint midpt2 = midPointForPoints(location, endpt); UIBezierPath *path = [UIBezierPath bezierPath]; [path moveToPoint:origin]; [path addQuadCurveToPoint:location controlPoint:CGPointMake(midpt1.x, midpt1.y+50)]; [path addQuadCurveToPoint:endpt controlPoint:CGPointMake(midpt2.x, midpt2.y+50)]; [shapeLayer setPath:path.CGPath];

I made a circle Path, the center of the circle path is in the middle of the view. Then, I made a ball that can move only on the circle path (at least this is what I want it to be): I made a function that move the ball wherever I drag him (on the circle path only), but for some reason whenever I drag it, it gets crazy and doesn't move as I want it to move. This is my code so far: class ViewController: UIViewController { var midViewX = CGFloat() var midViewY = CGFloat() var circlePath2 = UIBezierPath() var shapeLayer2 = CAShapeLayer() override func viewDidLoad() { super.viewDidLoad() midViewX =

I need to draw and get coordinates of bezier curves of each steps with native Javascript without ctx.bezierCurveTo method. I found several resources, but I confused. Esspecially this looks pretty close, but I couldnt implemented clearly. How can I accomplish this? hobberwickey You can plot out the Bezier: bezier = function(t, p0, p1, p2, p3){ var cX = 3 * (p1.x - p0.x), bX = 3 * (p2.x - p1.x) - cX, aX = p3.x - p0.x - cX - bX; var cY = 3 * (p1.y - p0.y), bY = 3 * (p2.y - p1.y) - cY, aY = p3.y - p0.y - cY - bY; var x = (aX * Math.pow(t, 3)) + (bX * Math.pow(t, 2)) + (cX * t) + p0.x; var y = (aY

In my app, user draws a shape on map and using UIBeizerPath i am drawing that path. Then based on the coordinates of the path i am displaying the results which are only in that area. Everything works great except that now when Annotations drops on the Map view the pins looks like they are behind the path which means path looks in the front. I am using this code to display the Annotation and path : -(void)clearAnnotationAndPath:(id)sender { [_mapView removeAnnotations:_mapView.annotations]; path = [UIBezierPath bezierPath]; [shapeLayer removeFromSuperlayer]; } - (void)handleGesture: