uibezierpath

Is it possible to reposition an already drawn CGPath/UIBezierPath on a view? I would like to move or change a path's position then perhaps recall the drawinRect method to just show the drawing again. From your question it sounds like you are drawing the path using Core Graphics inside drawRect: (as compared to using a CAShapeLayer ) so I'll explain the version first. Moving a CGPath You can create a new path by transforming another path. A translation transform moves the transformed object a certain distance in x and y. So using a translation transform you can move your existing path a certain

Basically I need to have a circle with stroke in different color, all equal in size. For example, 1/2 is blue and 1/2 is red. Image (sorry for so bad image): How can I draw something like this? There are lots of ways to do it, but one is to just draw two bezier paths, one for each side: - (void)drawRect:(CGRect)rect { UIBezierPath *blueHalf = [UIBezierPath bezierPath]; [blueHalf addArcWithCenter:CGPointMake(100, 100) radius:90.0 startAngle:-M_PI_2 endAngle:M_PI_2 clockwise:YES]; [blueHalf setLineWidth:4.0]; [[UIColor blueColor] setStroke]; [blueHalf stroke]; UIBezierPath *redHalf =

I want to draw some bezier lines and I want to animate them with a wave effect, Example Do you have some ideas about how I can do this ? Bezier line is it the best method to do it ? I found only 2 libs for this, but they are not really useful for what I need, I try to modify the code of one lib, unfortunately without success https://github.com/yourtion/YXWaveView I found this lib, https://antiguab.github.io/bafluidview/ which does the work, but it written in obj-c, maybe you know something like this in swift You can use a display link , a special kind of timer optimized for screen refresh

I found it tricky to animate a UIImageView between two states: its original rectangle frame, and a new shape created with a UIBezierPath . There are many different techniques mentioned, most of which did not work for me. First was the realization that using UIView block animation would not work; evidently one can't perform sublayer animations in an animateWithDuration: block. (see here and here ) That left CAAnimation , with the concrete subclasses like CABasicAnimation . I soon realized that one can't animate from a view that doesn't have a CAShapeLayer to one that does (see here , for

Objective I am attempting to create an animated approximation of human writing, using a UIBezierPath generated from a glyph. I understand and I have read the many UIBezierPath questions which sound similar to mine (but are not the same). My goal is to create an animation that approximates the look of a human performing the writing of characters and letters. Background I've created a playground that I am using to better understand paths for use in animating glyphs as if they were drawn by hand. A couple of concepts in the Apple CAShapeLayer (strokeStart and strokeEnd) really don't seem to

I am working on a drawing app, I have a UIBezeirPath, with which I draw in touchesMoved, and convert it to CGPath and then draw on to CGlayer, Here is my code -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { self.currentPath = [[DrawingPath alloc] init]; if(m_eraseButtonClicked) { [self.currentPath setPathColor:[UIColor backgroundColor]]; } else { [self.currentPath setPathColor:self.lineColor]; } CGPathRef cgPath = self.currentPath.path.CGPath; mutablePath = CGPathCreateMutableCopy(cgPath); } - (void)Erase { CGContextRef layerContext = CGLayerGetContext(self.DrawingLayer);