objective－c遮罩效果一个工具类

最近赶了一个项目，项目中涉及到遮罩效果，经过与同事跟网友们的讨论之后，在我那龌龊的代码上修改出了一个遮罩效果。

在viewcontroller里面的我的通过按钮来进行调用的，具体调用自己实现吧

#import "Mask.h"
#define kImageSize  128.0
@implementation Mask
@synthesize delegate = delegate_;
@synthesize speed;
@synthesize isStop;

- (id)init;
{
    if (self = [super init]) {
        
    }
    return (self);
}
//对外开放init方法
- (void)maskInitTap:(NSString*)oneName :(NSString*)twoName:(UIView*)maskView
{
//    tempName_ = oneName;
    maskOneName_ = oneName;
    maskTwoName_ = twoName;
    myMaskUIView_ = maskView;
 
//    maskTimer_ = 0.045;
    chenMAX_ = NO;
    //目标显示层图片
    UIImageView *showImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:maskOneName_]];
    showImage.frame = MAXCHENRECT;
    [myMaskUIView_ addSubview:showImage];
    //消失层图片
    UIImageView *disappearImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:maskTwoName_]];
    disappearImage.frame = MAXCHENRECT;
    [myMaskUIView_ addSubview:disappearImage];
    
    //预留覆盖消失层图片“添加指针样式图片”
    MaskImageView_ = [[UIImageView alloc]init];
    MaskImageView_.frame = MINCHENRECT;
    posiImageView_ = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"指针.png"]];
//    [myMaskUIView_ addSubview:posiImageView_];
//    posiImageView_.center = myMaskUIView_.center;
    NSLog(@"x===========%f,y==========%f",zhizhengPosition_.x,zhizhengPosition_.y);
    //遮罩层图片
    maskLayer_ = [CALayer layer];
    maskLayer_.frame = MINCHENRECT;
    maskLayer_.contents = (id)[[UIImage imageNamed:@"maskImage.png"]CGImage];
    disappearImage.layer.mask = maskLayer_;
    disappearImage.layer.masksToBounds = YES;
    //ondrawtap调用部分
    timerControll_ = [NSTimer scheduledTimerWithTimeInterval:maskTimer_ target:self selector:@selector(OnDrawTap) userInfo:nil repeats:YES];
    
    
    isStop = YES;
    speed = -1;
}

- (void)setSpeedOne
{
    int i = 3;
    zhizhengPosition_ = CGPointMake(0.2, 5.0);
    myMaskPoint_.y = myMaskPoint_.y + i;
    
    MaskImageView_.center = myMaskPoint_;
    
    posiImageView_.center = CGPointMake(684, myMaskPoint_.y - 383);
    maskLayer_.position = MaskImageView_.center;
    
    [myMaskUIView_ addSubview:posiImageView_];
}
- (void)setSpeedTwe
{
    int i = 5;
    zhizhengPosition_ = CGPointMake(0.2, 5.0);
    myMaskPoint_.y = myMaskPoint_.y + i;
    MaskImageView_.center = myMaskPoint_;
    posiImageView_.center = CGPointMake(684, myMaskPoint_.y - 383);
    maskLayer_.position = MaskImageView_.center;
}
- (void)setSpeedThree
{
    int i = 15;
    zhizhengPosition_ = CGPointMake(0.2, 15.0);
    myMaskPoint_.y = myMaskPoint_.y + i;
    
    MaskImageView_.center = myMaskPoint_;
    
    posiImageView_.hidden = YES;
    posiImageView_.center = CGPointMake(684, myMaskPoint_.y - 453);
    maskLayer_.position = MaskImageView_.center;
}
 
//决定遮罩自动下落或者停止的方法//:(CGPoint)acceleration 
- (void)OnDrawTap
{
    NSLog(@"this is runn%f---------%d",myMaskPoint_.y,speed);
    myMaskPoint_ = MaskImageView_.center;
     [self setSpeedOne];
    if (myMaskPoint_.y <= 1115 && myMaskPoint_.y > 0) 
    {
        isStop = NO;
        if (!isStop) {
            switch (speed) {
                case 1:
                    [self setSpeedOne];
                    break;
                case 2:
                    [self setSpeedTwe];
                    break;
                case 3:
                    [self setSpeedThree];
                    break;
                default:
                    break;
            }
        }
  
        if (myMaskPoint_.y >1115) {
            
            if (delegate_ != nil) {
                
                [delegate_ isStop];
            }
            NSLog(@"main is stop");
            isStop = YES;
        }
 
    } 
    else {
        [self CloseTimer];
        isStop = YES;
    }
}
//获得chenMAX_的值；
- (BOOL)getChenMAX
{
    return chenMAX_;
}
//设置chenMAX_的值；
- (void)setChenMAX:(BOOL)chenMAX
{
    chenMAX_ = chenMAX;
}
- (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)gestureRecognizer
{
    CGPoint curPos = [gestureRecognizer locationInView:myMaskUIView_];
    if (curPos.x > 0 && curPos.x < 72) {
        return NO;
    }
    return YES;
}
//获得目标显示层与获得消失层图片的名称
- (NSString*)getOneName
{
    return maskOneName_;
}
- (NSString*)getTwoName
{
    return maskTwoName_;
}
//设置目标显示层与设置消失层图片名称
- (void)setOneName:(NSString*)setOneName
{
    maskOneName_ = setOneName;
}
- (void)setTwoName:(NSString*)setTwoName
{
    maskTwoName_ = setTwoName;
}
//获取时间与设置时间
- (float)getTimer
{
    return maskTimer_;
}
- (void)setTimer:(float)setTime
{
    maskTimer_ = setTime;
}
//获得当前点与获得增加点
- (CGPoint)getMyMaskPoint
{
    return myMaskPoint_;
}
- (CGPoint)getPosPosition
{
    return zhizhengPosition_;
}
//设置当前点与设置增加点
- (void)setMyMaskPoint:(CGPoint)setMyMaskPoint
{
    myMaskPoint_ = setMyMaskPoint;
}
- (void)setPosPosition:(CGPoint)setPosPosition
{
    zhizhengPosition_ = setPosPosition;
}
//释放方法
- (void)CloseTimer
{
    [timerControll_ invalidate];
    timerControll_ = nil;
    
    [posiImageView_ removeFromSuperview];
    posiImageView_ = nil;
    
    [MaskImageView_ removeFromSuperview];
    MaskImageView_ = nil;
}



////设置下落速度方法,接受传入点控制当前点位置
//- (void)setSpeedTap:(float)acceleration
//{
//    int i;
//    if (maskTimer_ > 0.02) 
//    {
//        i = 1;
//        zhizhengPosition_ = CGPointMake(0.2, 1.0);
//        myMaskPoint_.y = myMaskPoint_.y + i;
//    }
//    else
//    {
//        i = 3;
//        zhizhengPosition_ = CGPointMake(0.2, 3.0);
//        myMaskPoint_.y = myMaskPoint_.y + i;
//    }
//
//    MaskImageView_.center = myMaskPoint_;
//    if (i == 1) {
//        posiImageView_.center = CGPointMake(684, myMaskPoint_.y - 376);
//    }
//    if (i == 3) {
//        posiImageView_.center = CGPointMake(684, myMaskPoint_.y - 383);
//    }
//    maskLayer_.position = MaskImageView_.center;
//
//}


@end