uibezierpath

问题 I drawed a UIBezierPath in Objective-C and fill it with a red color. Now, I want to fill the path with multiple colors based on percentage. For example: I want to fill the path with 20% green color and the remaining 80% with red color, on top of each other (not a gradient). I also want a few pixels spacing between the fill and the stroke. I don't know how I can accomplish these things. Does anyone know how I can accomplish this or point me in the right direction? Many thanks in advance!

问题 I am doing a drawing app and I am trying to smooth the line which I draw with finger.For this purpose I am using "quadCurveToPoint" function. But, I am not getting it right. Below is my code: - (void) drawRect:(CGRect)rect { [path stroke]; } - (id) initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) self.multipleTouchEnabled = NO; path = [UIBezierPath bezierPath]; path.lineWidth = IS_IPAD? 2.0f : 1.0f; return self; } - (void) touchesBegan:(NSSet *) touches withEvent:(UIEvent

问题 I want to set up UIBezierPath as mask into my view: The goal is something like this: So i draw the View with frame: CGFloat round = 80; UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(self.frame.size.width/2-105, 0, 210, 60+round)]; myView.backgroundColor = [UIColor redColor]; And then try to add BezierMask: UIBezierPath *aPath = [UIBezierPath bezierPath]; CGSize viewSize = CGSizeMake(myView.frame.size.width, myView.frame.size.height); //(210,80) CGPoint startPoint = CGPointMake

问题 What is the best way to draw a bezier curve, in iOS application, that passes through a set of given points 回答1: A little more generic way to do it can be achieved by, for example, looking at the BEMSimpleLineGraph GitHub Project (see here for more info: bemsimplelinegraph). Here I extracted a method to draw a bezier curve through a given list of points. The header file (BezierLine.h): #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> #import <CoreGraphics/CoreGraphics.h> @interface

问题 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 回答1: I've put together some sample code which you can

问题 I've been trying to figure out how to use UIBezierPath for this project, but I don't know how to implement this kind of drawing. I can draw a circle and arcs and straight lines, but I am feeling pretty lost on this one. Appreciate the help 回答1: To draw a sine wave on a UIBezierPath called path , draw a number of line segments using path.addLine(to:) . The trick is to convert the angle ( 0 to 360 ) to the x coordinate of a point, and sin(x) to the y coordinate of a point. Here is an example:

问题 I want to rounder my UIView with the value like that top-left-radius:20; bottom-right-radius:5; bottom-left-radius:5; and top-right-radius:10; //For rounder `UIRectCornerBottomLeft & UIRectCornerBottomRight` I use UIBezierPath *maskPath0 = [UIBezierPath bezierPathWithRoundedRect:self.messageView.bounds byRoundingCorners:(UIRectCornerBottomLeft | UIRectCornerBottomRight) cornerRadii:CGSizeMake(5.0, 5.0)]; CAShapeLayer *maskLayer0 = [[CAShapeLayer alloc] init]; maskLayer0.frame = self.bounds;

问题 I want to rounder my UIView with the value like that top-left-radius:20; bottom-right-radius:5; bottom-left-radius:5; and top-right-radius:10; //For rounder `UIRectCornerBottomLeft & UIRectCornerBottomRight` I use UIBezierPath *maskPath0 = [UIBezierPath bezierPathWithRoundedRect:self.messageView.bounds byRoundingCorners:(UIRectCornerBottomLeft | UIRectCornerBottomRight) cornerRadii:CGSizeMake(5.0, 5.0)]; CAShapeLayer *maskLayer0 = [[CAShapeLayer alloc] init]; maskLayer0.frame = self.bounds;

问题 I have two UIBezierPath... First path shows the total path from to and fro destination and the second path is a copy of the first path but that copy should be a percentage of the first path which I am unable to do. Basically I would like the plane to stop at the part where green UIBezier path ends and not go until the past green color. I am attaching a video in hte link that will show the animation I am trying to get. http://cl.ly/302I3O2f0S3Y Also a similar question asked is Move CALayer via

问题 I have two UIBezierPath... First path shows the total path from to and fro destination and the second path is a copy of the first path but that copy should be a percentage of the first path which I am unable to do. Basically I would like the plane to stop at the part where green UIBezier path ends and not go until the past green color. I am attaching a video in hte link that will show the animation I am trying to get. http://cl.ly/302I3O2f0S3Y Also a similar question asked is Move CALayer via