标签: uibezierpath

我有一个UIBezierPath,我想得到它的镜像.我怎么能做到这一点？

 // Method for generating a path
 UIBezierPath *myPath = [self generateAPathInBounds:boundingRect];

 // ? now I would like to mirror myPath ?

我想在UIView中使用不同的笔触和填充颜色绘制多个UIBezierPath.

这是代码

- (void)drawRect:(CGRect)rect {

    context = UIGraphicsGetCurrentContext();

    [[UIColor grayColor] setFill]; 
    [[UIColor greenColor] setStroke];

    UIBezierPath *aPath = [[UIBezierPath alloc] init]; 
    [aPath moveToPoint:CGPointMake(227,34.25)];
    [aPath addLineToPoint:CGPointMake(298.25,34.75)];
    [aPath addLineToPoint:CGPointMake(298.5,82.5)];
    [aPath addLineToPoint:CGPointMake(251,83)];
    [aPath addLineToPoint:CGPointMake(251,67.5)];
    [aPath addLineToPoint:CGPointMake(227.25,66.75)];   
    [aPath closePath]; 
    aPath.lineWidth = 2;
    [aPath fill]; 
    [aPath stroke];

    UIBezierPath *aPath2 = [[UIBezierPath alloc] init];
    [aPath2 moveToPoint:CGPointMake(251.25,90.5)];
    [aPath2 addLineToPoint:CGPointMake(250.75,83.25)];
    [aPath2 addLineToPoint:CGPointMake(298.5,83)];
    [aPath2 addLineToPoint:CGPointMake(298.5,90.25)];
    [aPath2 closePath];
    aPath2.lineWidth = 2;
    [aPath2 fill]; 
    [aPath2 stroke];
    [paths addObject:aPath2];

问题是笔划和填充颜色是在当前上下文中设置的.是否可以在同一CGContextRef中绘制不同颜色的不同UIBezierPath？

或者我必须在单独的UIView中绘制每个UIBezierPath？

我正在尝试绘制自定义按钮框架,如下所示:

UIBezierPath *stroke = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                                  cornerRadius:RECT_CORNECR_RADIUS];

[stroke stroke];

但由于某种原因,角落曲线看起来比侧面更有思想性.如果你看看UIButton的默认框架,它是非常统一的.A是UIButton,B是自定义按钮.

任何想法我怎么能使它更像UIButton.

目前我正在开发iOS的绘图应用程序.我坚持将阴影效果应用于特定的绘制路径.我使用UIBezierpath绘制路径.有没有办法在UIBezierpath上应用阴影效果？

我是一个iOS新手.如何使我遵循字母表的UIBezierPath说"B".目标是跟踪沿此路径的接触.

提前致谢.

我正在开发一个与HairTryOn相同的应用程序.但问题在下图中显示.我想根据客户脸部设置发型,使用蓝线按照图像显示.我使用以下代码

    testVw = [[UIView alloc]initWithFrame:CGRectMake(100,100, 100, 100)];
    testVw.backgroundColor = [UIColor clearColor];
    [self.view addSubview:testVw];    


    resizeVw = [[UIImageView    alloc]initWithFrame:CGRectMake(testVw.frame.size.width-25, testVw.frame.size.height-25, 25, 25)];
    resizeVw.backgroundColor = [UIColor clearColor];
    resizeVw.userInteractionEnabled = YES;
    resizeVw.image = [UIImage imageNamed:@"button_02.png" ];

    [testVw addSubview:resizeVw];

    UIPanGestureRecognizer* panResizeGesture = [[UIPanGestureRecognizer alloc] 
    initWithTarget:self action:@selector(resizeTranslate:)];

    [testVw addGestureRecognizer:panResizeGesture];

该resizeTranslate:方法:

-(void)resizeTranslate:(UIPanGestureRecognizer *)recognizer
{
        if ([recognizer state]== UIGestureRecognizerStateBegan) 
        {
            prevPoint = [recognizer locationInView:testVw.superview];
            [testVw setNeedsDisplay];
        }
        else if ([recognizer state] == UIGestureRecognizerStateChanged)
        {
            if (testVw.bounds.size.width < 20)
            {

                testVw.bounds = CGRectMake(testVw.bounds.origin.x, testVw.bounds.origin.y, 20,testVw.bounds.size.height);
                imgvw.frame = …

我有一个UIViewController我想在屏幕上画一个椭圆CGPoint(x:160,y:160),宽度:240,高度:320.我怎么能在swift中做到这一点？我非常感谢任何帮助.

我有一个关于UIBezierPath的问题.

例如,我有这条路:

现在我想要一个从白色到红色的颜色渐变.从左到右.

这是我的代码:

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];

谁能帮我？

编辑1:

我有这个色轮:

    UIBezierPath *bezierPath;

for ( int i = 0; i < 360; i++) {
    bezierPath = [UIBezierPath bezierPathWithArcCenter:_center radius:_radius startAngle:((i * angle)) endAngle:(((i + 1) * angle)) clockwise:YES];

    [bezierPath addLineToPoint:_center];
    [bezierPath closePath];
    UIColor *color = [UIColor colorWithHue:i/sectors saturation:1. brightness:1. alpha:1]; …

我知道有一种绘制圆形的方法 - UIBezierPath(roundedRect, cornerRadius)

但是我想知道如果我自己剪辑角落,为什么我必须在绘制矩形之前添加剪辑？(我觉得在绘制之后剪切矩形更合理.我错过了什么概念？)

(1)工作

override func drawRect(rect: CGRect) {
    var clipPath = UIBezierPath(roundedRect: rect, cornerRadius: 8.0)
    path.addClip()

    var rectPath = UIBezierPath(rect: rect)
    UIColor.redColor().setFill()
    rectPath.fill()
}

(2)不工作

override func drawRect(rect: CGRect) {
    var rectPath = UIBezierPath(rect: rect)
    UIColor.redColor().setFill()
    rectPath.fill()

    var clipPath = UIBezierPath(roundedRect: rect, cornerRadius: 8.0)
    path.addClip()
}

我做了一个圆圈路径,圆圈路径的中心位于视图的中间.然后,我做了一个只能在圆圈路径上移动的球(至少这是我想要的):

我做了一个函数,无论我在哪里拖动它都会移动球(仅限于圆形路径),但出于某种原因,每当我拖动它时,它就会变得疯狂并且不会移动,因为我希望它移动.

到目前为止这是我的代码:

class ViewController: UIViewController {
    var midViewX = CGFloat()
    var midViewY = CGFloat()

    var circlePath2 = UIBezierPath()
    var shapeLayer2 = CAShapeLayer()
    override func viewDidLoad() {
        super.viewDidLoad()
        midViewX = view.frame.midX
        midViewY = view.frame.midY
        // Do any additional setup after loading the view, typically from a nib.
        let circlePath = UIBezierPath(arcCenter: CGPoint(x: midViewX,y: midViewY), radius: CGFloat(100), startAngle: CGFloat(0), endAngle:CGFloat(M_PI * 2), clockwise: true)
        let shapeLayer = CAShapeLayer()
        shapeLayer.path = circlePath.CGPath
        shapeLayer.fillColor = UIColor.clearColor().CGColor
        shapeLayer.strokeColor = UIColor.redColor().CGColor
        shapeLayer.lineWidth = 3.0
        view.layer.addSublayer(shapeLayer) …