uibezierpath

Draw transparent UIBezierPath line inside drawRect

由 霸气de小男生 提交于 2019-12-11 01:08:37
问题 I am trying to achieve a transparency path in the drawRect method. This is the simple code I have created: override func drawRect(rect: CGRect) { let clippingPath = UIBezierPath() UIColor.whiteColor().set(); clippingPath.moveToPoint(CGPoint(x: 10, y: CGRectGetHeight(self.bounds) / 2)) clippingPath.addLineToPoint(CGPoint(x: CGRectGetWidth(self.bounds) - 10, y: CGRectGetHeight(self.bounds) / 2)) clippingPath.lineWidth = 6 clippingPath.lineCapStyle = .Round clippingPath.stroke() } And this is

html5 draw gaussian function using bezierCurveTo

由 流过昼夜 提交于 2019-12-11 01:08:22
问题 I have been trying to draw gaussin-like function using bezierCurveTo find the code below <canvas id="thisCan" width="0px" height="0px" style="border:1px solid #d3d3d3;"> Your browser does not support the HTML5 canvas tag. </canvas> <script> (function() { var // Obtain a reference to the canvas element // using its id. htmlCanvas = document.getElementById('thisCan'), // Obtain a graphics context on the // canvas element for drawing. ctx = htmlCanvas.getContext('2d'); var width = 0; var height

How do I remove a UIBezierPath drawing?

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-10 17:27:44
问题 I'm creating an app where you eventually have to sign, and I was wondering how you would clear the signature if they messed up? EDIT: Line Class: #import "LinearInterpView.h" @implementation LinearInterpView { UIBezierPath *path; // (3) } - (id)initWithCoder:(NSCoder *)aDecoder // (1) { if (self = [super initWithCoder:aDecoder]) { self.backgroundColor = UIColor.whiteColor; [self setMultipleTouchEnabled:NO]; // (2) [self setBackgroundColor:[UIColor whiteColor]]; path = [UIBezierPath bezierPath

How to redraw the UIBezierpath based textview text contentsize in iphone

由 亡梦爱人 提交于 2019-12-10 15:40:05
问题 I draw the message bubble using UIBezierpath in uiview. I render the textview inside the bezier path. My problem is when I enter the text in textview I want to message bubble size dynamically increase but I cannot do that. how can resolve the issue. 回答1: You can resize the UIBezierpath relative to your UITextview frame size like this: CGRect box = CGPathGetBoundingBox(bezierpath.CGPath) CGFloat scaleX = textView.frame.size.width / box.frame.size.width; CGFloat scaleY = textView.frame.size

iOS 简单的使用UIBezierPath绘制

由 夙愿已清 提交于 2019-12-09 17:28:32
UIBezierPath这个类呢主要用于绘图。 之前的项目中需要绘图的部分都是用Core Graphics来绘制，OC是我的第一门语言，所以对于Core Graphics的C语言API不太适应，最近发现原来苹果的UIKit中已经对Core Graphics做了一些简单的封装，UIBezierPath就是其中一个。UIBezierPath已经完全满足了我对绘图的一些基本要求。 UIBezierPath的好处显而易见。 * 首先它是OC语言的，相对于c语言的Core Graphics来说更为平易近人。 * 其次它能够使用ARC，如果我们直接使用CGPathRef的话，还要自己负责在合适的时候释放。 现在我就根据自己的使用来做一下简单记录。 使用 UIBezierPath的使用相当简单，分为三步: * 创建path * 添加路径到path * 将path绘制出来 例如我们来画条线： // 创建path UIBezierPath *path = [UIBezierPath bezierPath]; // 添加路径[1条点(100,100)到点(200,100)的线段]到path [path moveToPoint:CGPointMake(100 , 100)]; [path addLineToPoint:CGPointMake(200, 100)]; // 将path绘制出来 [path

BezierPath Rotation in a UIView

由 丶灬走出姿态 提交于 2019-12-09 13:53:16
问题 I am drawing a BezierPath on Touch event. Now I have to rotate that Bezier Path on the same location using Gesture Method. But problem is, after rotation its position become change. Its look like the following image.. How can I fix this? The Upper image is the original image. Share your ideas with me.. Thanks in advance 回答1: Check this in Apple documentation. applyTransform: Transforms all points in the path using the specified affine transform matrix. - (void)applyTransform:

how to draw UIBezierPaths

由 送分小仙女□ 提交于 2019-12-09 13:05:04
问题 Here's what I want to do: I have a UIBezierPath and I want to pass it to some method for it to be drawn. Or simply draw it from the method in which it is created. I'm not sure how to indicate which view it should be drawn in. Do all methods for drawing have to start with - (void)drawRect:(CGRect)rect { ...} ? can I do - (void)drawRect:(CGRect)rect withBezierPath:(UIBezierPath*) bezierPath { ... } ?? How do I call this function, or method, from another method? 回答1: drawRect: is something that

Swift: How to add points to a closed CGPath?

由 ⅰ亾dé卋堺 提交于 2019-12-09 00:17:49
问题 I'd like to make SKSpriteNodes to move along letter outlines. I have many letters but here's one example: I would like the sprite to follow the red line. I found this answer that mostly covers my problem: Get path to trace out a character in an iOS UIFont The answer comes with this good and working example code: let font = UIFont(name: "HelveticaNeue", size: 64)! var unichars = [UniChar]("P".utf16) var glyphs = [CGGlyph](count: unichars.count, repeatedValue: 0) let gotGlyphs =

How to subdivide UIBezierPath and store it in two different objects

由 对着背影说爱祢 提交于 2019-12-08 17:30:37
问题 I have UIBezierPath in the application. When the finger touch on the path is recognized i want to subdivide that curve and store that two curves into two different objects. So touch co-ordinates will work as end-point for one curve and start-point for second curve. Again if i touch on any of this curve, that curve will subdivide into two other curves and so on. I searched for this a lot. But could not find any good solution. Also I do not have idea if there is any other way to do this. Any

How to initialize UIBezierPath to draw a circle in swift?

由 折月煮酒 提交于 2019-12-08 17:18:44
问题 I'm trying to draw a circle in Swift, but when I write my code I get a error "could not find an overload for 'init' that accepts the supplied arguments. In the class UIBezierPath there is a init function: init(arcCenter center: CGPoint, radius: CGFloat, startAngle: CGFloat, endAngle: CGFloat, clockwise: Bool) -> UIBezierPath But when I declared this with this code I get the error.. Need I cast any variable to other type? but if I compiled this in iphone 4 I don't get the error, only in iphone
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