从屏蔽UIImage获取UIBezierpath

Question

我怎样才能UIBezierpath从UIImage这样的..

我不想要完整的方形路径,只想从UIImage的红色边框中显示该路径.

我已经通过Link 1和Link 2但是无法获得成功..

我已经完成了以下代码来获取屏蔽路径..

CAShapeLayer *maskLayer = [CAShapeLayer layer];
maskLayer.frame = imgView.frame;
UIBezierPath *roundedPath = [UIBezierPath bezierPathWithRoundedRect:maskLayer.bounds byRoundingCorners:UIRectCornerAllCorners cornerRadii:CGSizeMake(50.f, 50.f)]; 

基本上我想要UIBezierpath遵循像A,B等字母的形状.等.

请告诉我这是否可能获得这种类型的路径？

提前致谢..

Answer 1

试试这个代码：

CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation 
animationWithKeyPath:@"position"];
pathAnimation.calculationMode = kCAAnimationPaced;
pathAnimation.fillMode = kCAFillModeForwards;
pathAnimation.removedOnCompletion = NO;
pathAnimation.duration = 15.0;
pathAnimation.repeatCount = 1;
CGMutablePathRef curvedPath = CGPathCreateMutable();
CGPathMoveToPoint(curvedPath, NULL, x+15, y);
CGPathAddQuadCurveToPoint(curvedPath, NULL, 20, 10, 100, 330);
pathAnimation.path = curvedPath;
CGPathRelease(curvedPath);
Yourimage.center=CGPointMake(x, y);
[Yourimage.layer addAnimation:pathAnimation forKey:@"moveTheSquare"];