uibezierpath

问题 I'm getting a clipped LineJoin in a UIBezierPath when one line comes back exactly over the previous line. If I adjust the second line by one pixel, the LineJoin behaves as expected. Here's the code: UIBezierPath *path = [UIBezierPath bezierPath]; [path setLineWidth:10.0f]; [path setLineCapStyle:kCGLineCapRound]; [path setLineJoinStyle:kCGLineJoinRound]; [path moveToPoint:CGPointMake(100, 100)]; [path addLineToPoint:CGPointMake(200, 100)]; [path addLineToPoint:CGPointMake(150, 100)]; [path

问题 I'm getting a clipped LineJoin in a UIBezierPath when one line comes back exactly over the previous line. If I adjust the second line by one pixel, the LineJoin behaves as expected. Here's the code: UIBezierPath *path = [UIBezierPath bezierPath]; [path setLineWidth:10.0f]; [path setLineCapStyle:kCGLineCapRound]; [path setLineJoinStyle:kCGLineJoinRound]; [path moveToPoint:CGPointMake(100, 100)]; [path addLineToPoint:CGPointMake(200, 100)]; [path addLineToPoint:CGPointMake(150, 100)]; [path

问题 I am working on a circular progress bar that i've created using UIBezierPath. The progress bar looks like the following picture: My question is: how to make the edge of the arc rounded and not rectangular? The code i used to draw the arc looks like is: // Draw the arc with bezier path int radius = 100; arc = [CAShapeLayer layer]; arc.path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(100, 50) radius:radius startAngle:M_PI endAngle:M_PI/150 clockwise:YES].CGPath; arc.position =

问题 I created a rectangle using following code and now I need to rounded the corners of this rectangle. but I can't find a property called layer.cornerRadius, can anyone help me ? class OvalLayer: CAShapeLayer { let animationDuration: CFTimeInterval = 0.3 override init() { super.init() fillColor = Colors.green.CGColor path = ovalPathSmall.CGPath } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } var ovalPathStart: UIBezierPath { let path =

问题 I'm attempting the create a clipping path in the shape of a plus sign, so that subsequent paths that I draw into the same context have this portion removed. I create the clipping path using two rectangle paths overlaid on each other. This is what I'd like the final drawing to look like when I subsequently draw a circle: xXX| |XXx XXXX| |XXXX XXXXX| |XXXXX ——— ——— ——— ——— XXXXX| |XXXXX XXXX| |XXXX xXX| |XXx However, it actually looks like this: xXX| |XXx XXXX| |XXXX XXXXX| |XXXXX ——— XX——— ———

问题 I want to create bezier path with dynamically changing line's width. I need spending the same amount of color on each part of line. So, longer line should be thinner. And shorter line should be bold. Or, at least, line should change it's width from beginning to the end. Any ideas how to achieve it? Thank you. 回答1: the only way to achieve this is with multiple UIBezierPath s of different thickness and colour. 来源： https://stackoverflow.com/questions/7345251/bezier-path-with-dynamic-change-of

问题 Despite looking over more than 3 post (made in 2015) about this problem, non have solved mine. When ever I run, a simple, code to draw a line using UIBezierPath the program would return me this: : CGContextSetStrokeColorWithColor: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable. : CGContextSetFillColorWithColor: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

问题 I'm trying to create a bezier path like the instagram triangle in the picture below, however I must be doing something wrong. The Bezier path does not show! - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. } -(void)viewDidLayoutSubviews{ [super viewDidLayoutSubviews]; [self drawTriangle]; } - (IBAction)closeButton:(UIButton *)sender { [self dismissViewControllerAnimated:YES completion:nil]; } - (void)drawTriangle{ UIBezierPath* trianglePath =

问题 I want to draw a straight line with my finger that automatically sizes based upon how far away I am from the point of origin. So if I touch the screen in the middle and slide my finger out a line appears to 'stretch' and pivot around the point of orgin as my finger moves on the screen. WHhen I lift my finger. The Destination Point should finalize and create a line. I can drag my finger across the screen and 'Draw' on the screen but that's not what I am wanting to do. I thought UIBeizerPath

问题 I would like to create a UIBezierPath with 10px rounded corners and with gradient fill. How can I acheive this effect? Here's an image of what I want to do: As you can see, this square has: 2px black border 10px rounded corners red to green linear gradient fill How can I do this programatically without using pattern image color ? Here's how I create the path: UIBezierPath *border = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:10.0f]; [border setLineWidth:2]; [[UIColor