uibezierpath

Using Swift and SpriteKit, I'd like to move a SKSpritenode in a spiral pattern, but didn't find the right resources to get me started. To be more precise, I'd like to move a sprite node in a downward loop. I've checked a sequence of SKActions, but as they are not executed parallel, a circular movement combined with move-to will not work. I'd be glad for any hints, tutorials or snippets to set me on the right track. Thanx in advance, Marcus I've put together some sample code which you can adapt for your purposes. I've based the code off the equation for an Archimedean Spiral : r = a + bθ Where

I am writing an iPad app in which I am rendering XML objects that represent shapes into graphics on the screen. One of the objects I am trying to render is arcs. Essentially these arcs provide me with a bounding rectangle as well as a start and end angle. Given attributes: x y width height startAngle endAngle With these values I need to draw the arc (which is essentially part of an ellipse). I can not use the following: UIBezierPath *arc = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(x, y, width, height)]; [UIColor blackColor] setStroke]; [arc stroke]; because it draws a full ellipse.

I've got an question about UIBezierPath. For example I've got this path: Now I want to have a color gradient from white to red. From left to right. Here is my code: UIBezierPath *bezierPath; bezierPath = [UIBezierPath bezierPathWithArcCenter:_center radius:_radius startAngle:((4 * angle)) endAngle:(((20) * angle)) clockwise:YES]; [bezierPath addLineToPoint:_center]; [bezierPath closePath]; UIColor *color = [UIColor colorWithHue:0/sectors saturation:1. brightness:1. alpha:1]; [color setFill]; [color setStroke]; [bezierPath fill]; [bezierPath stroke]; Can anyone help me? Edit 1: I have this

I crated a rectangle using UIBezierPath adding point by point, now I want to rounded the corners of this rectangle but seems there are no way to do it. can anyone help me ? class RectangleLayer: CAShapeLayer { let animationDuration: CFTimeInterval = 0.5 override init() { super.init() fillColor = Colors.clear.CGColor lineWidth = 5.0 path = rectanglePathStart.CGPath } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } var rectanglePathStart: UIBezierPath { let rectanglePath = UIBezierPath() rectanglePath.moveToPoint(CGPoint(x: 0.0, y: 100.0))

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: self.myPath=[UIBezierPath bezierPathWithArcCenter:center radius:200 startAngle:0 endAngle:180 clockwise:YES]; (This much I was able to get up running with some web searching). I have this path. Now I want to fill the reverse of this path, so leaving this portion and filling everything else. How can I finish the coding? I don't have much info on this. The problem The area it is showing after using Cemal Answer previously it only showed a circle with red stroke. Edit - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I try to change a circle into a square and vice versa and I am almost there. However it doesn't animates as expected. I would like all corners of a square to be animated/morphed at the same time but what I get is the following: I use CAShapeLayer and CABasicAnimation in order to animate shape property. Here is how I create the circle path: - (UIBezierPath *)circlePathWithCenter:(CGPoint)center radius:(CGFloat)radius { UIBezierPath *circlePath = [UIBezierPath bezierPath]; [circlePath addArcWithCenter:center radius:radius startAngle:0 endAngle

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need your help: I am trying to create a graph using UIBezierPaths with variable widths and consisting of a bezier curve with two control points. Now I'd like to add arrow heads to the end (right hand side) of these paths. Is there a way to do this i.e. by appending a subpath with a smaller lineWidth which contains a triangle? here is a sample picture of some paths to which I'd like to add arrowheads: Thanks for your help! 回答1: Let's assume you drew one of arcs like so: UIBezierPath *path = [UIBezierPath bezierPath]; [path moveToPoint

I have used both UIBezierPath and CAShapeLayer before. But almost every time in conjunction with filling the object contained within the path with color inside. But I would like this time to fill the color outside of the object contained by the UIBezierPath . I just wrote and ran the following simple code trying to get myself acquainted with the fillRule property: CAShapeLayer *myLayer = (CAShapeLayer*) self.layer; //size: 320 X 480 UIBezierPath *testPath = [UIBezierPath bezierPathWithOvalInRect:(CGRect){{100, 100}, 100, 100}]; //a simple circle myLayer.fillRule = kCAFillRuleNonZero; // have