# CAShapeLayerAnimation

**Repository Path**: shijiemori/CAShapeLayerAnimation

## Basic Information

- **Project Name**: CAShapeLayerAnimation
- **Description**: 利用CAShapeLayer和CADisplayLink 制作录音时波浪动画
- **Primary Language**: Objective-C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2017-09-28
- **Last Updated**: 2021-11-03

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# CAShapeLayerAnimation

//设置正弦波浪

    self.waveSinLayer = [CAShapeLayer layer];
    _waveSinLayer.backgroundColor = [UIColor clearColor].CGColor;
    self.waveSinLayer.fillColor = [[UIColor greenColor] CGColor];
    self.waveSinLayer.frame = CGRectMake(0, imageView.bounds.size.height, imageView.bounds.size.width, imageView.bounds.size.height);
 
    self.waveHeight = CGRectGetHeight(imageView.bounds)/2;//设置波浪大小
    self.waveWidth  = CGRectGetWidth(imageView.bounds);
    self.frequency = 1;
    self.phaseShift = 8;
    self.waveMid = self.waveWidth*2;
    self.maxAmplitude = self.waveHeight*.1f;
    
    _sineImageView = [[UIImageView alloc] initWithFrame:imageView.bounds];
    _sineImageView.image = [UIImage imageNamed:@"sound_blue-water"];
    [imageView addSubview:_sineImageView];
    
    _sineImageView.layer.mask = _waveSinLayer;
 
 //开始动画特效 
 - (void)startLoading {
    
       [_displayLink invalidate];
       self.displayLink = [CADisplayLink displayLinkWithTarget:self
                                                   selector:@selector(updateWave:)];
       [_displayLink addToRunLoop:[NSRunLoop currentRunLoop]
                       forMode:NSRunLoopCommonModes];
       CGPoint position = self.waveSinLayer.position;
       position.y = position.y - imageView.bounds.size.height - 10;
       CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
       animation.fromValue = [NSValue valueWithCGPoint:self.waveSinLayer.position];
       animation.toValue = [NSValue valueWithCGPoint:position];
       animation.duration = kWavePositionDuration;
       animation.repeatCount = HUGE_VALF;
       animation.removedOnCompletion = NO;
       [self.waveSinLayer addAnimation:animation forKey:@"positionWave"];
       [self.waveCosLayer addAnimation:animation forKey:@"positionWave"]; 
     
 }
    
 波浪动画截图：
 
![image](https://github.com/wuyukobe24/CAShapeLayerAnimation/blob/master/recordAnimation.png)