不规则形状的Mask动画

不规则形状的Mask动画

效果

源码

https://github.com/YouXianMing/Animations

//

//  MaskShapeViewController.m

//  Animations

//

//  Created by YouXianMing on 16/7/10.

//  Copyright © 2016年 YouXianMing. All rights reserved.

//

#import "MaskShapeViewController.h"

#import "AppleSystemService.h"

#import "JSAnimatedImagesView.h"

#import "CutOutClearView.h"

#import "UIView+SetRect.h"

#import "UIFont+Fonts.h"

#import "FBShimmeringView.h"

typedef enum : NSUInteger {

    kUpJsView = ,

    kDownJsView,

} EMaskShapeViewControllerValue;

@interface MaskShapeViewController () <JSAnimatedImagesViewDataSource>

@property (nonatomic, strong) JSAnimatedImagesView  *upJsView;

@property (nonatomic, strong) NSArray               *upDataSource;

@property (nonatomic, strong) JSAnimatedImagesView  *downJsView;

@property (nonatomic, strong) NSArray               *downDataSource;

@end

@implementation MaskShapeViewController

- (void)setup {

    [super setup];

    self.backgroundView.backgroundColor = [UIColor blackColor];

    CGFloat gap    = .f;

    CGFloat offset = .f;

    {

        CutOutClearView *areaView = [[CutOutClearView alloc] initWithFrame:CGRectMake(, , Width, self.contentView.height / .f + offset - gap)];

        areaView.fillColor        = [UIColor clearColor];

        areaView.areaColor        = [UIColor blackColor];

        UIBezierPath *path = [UIBezierPath bezierPath];

        [path moveToPoint:CGPointMake(gap, gap)];

        [path addLineToPoint:CGPointMake(Width - gap, gap)];

        [path addLineToPoint:CGPointMake(Width - gap, areaView.height)];

        [path addLineToPoint:CGPointMake(gap, areaView.height - (offset - gap) *  - gap)];

        [path closePath];

        areaView.paths = @[path];

        self.upDataSource = @[[UIImage imageNamed:@""],

                              [UIImage imageNamed:@""],

                              [UIImage imageNamed:@""],

                              [UIImage imageNamed:@""],

                              [UIImage imageNamed:@""]];

        self.upJsView                     = [[JSAnimatedImagesView alloc] initWithFrame:CGRectMake(, , Width, self.contentView.height / .f + offset - gap)];

        self.upJsView.transitionDuration  = .f;

        self.upJsView.tag                 = kUpJsView;

        self.upJsView.dataSource          = self;

        self.upJsView.layer.masksToBounds = YES;

        self.upJsView.maskView            = areaView;

        [self.contentView addSubview:self.upJsView];

    }

    {

        CutOutClearView *areaView = [[CutOutClearView alloc] initWithFrame:CGRectMake(, , Width, self.contentView.height / .f + (offset - gap))];

        areaView.fillColor        = [UIColor clearColor];

        areaView.areaColor        = [UIColor blackColor];

        UIBezierPath *path = [UIBezierPath bezierPath];

        [path moveToPoint:CGPointMake(gap, )];

        [path addLineToPoint:CGPointMake(gap, areaView.height - gap)];

        [path addLineToPoint:CGPointMake(Width - gap, areaView.height - gap)];

        [path addLineToPoint:CGPointMake(Width - gap, (offset - gap) *  + gap)];

        [path closePath];

        areaView.paths = @[path];

        self.downDataSource = @[[UIImage imageNamed:@"pic_1"],

                                [UIImage imageNamed:@"pic_2"],

                                [UIImage imageNamed:@"pic_3"],

                                [UIImage imageNamed:@"pic_4"]];

        self.downJsView                     = [[JSAnimatedImagesView alloc] initWithFrame:CGRectMake(, , Width, self.contentView.height / .f + offset - gap)];

        self.downJsView.transitionDuration  = .f;

        self.downJsView.tag                 = kDownJsView;

        self.downJsView.dataSource          = self;

        self.downJsView.layer.masksToBounds = YES;

        self.downJsView.maskView            = areaView;

        self.downJsView.bottom = self.contentView.height;

        [self.contentView addSubview:self.downJsView];

    }

}

#pragma mark - JSAnimatedImagesViewDataSource

- (NSUInteger)animatedImagesNumberOfImages:(JSAnimatedImagesView *)animatedImagesView {

    NSUInteger count = ;

    animatedImagesView.tag == kUpJsView ? (count = self.upDataSource.count) : (count = self.downDataSource.count);

    return count;

}

- (UIImage *)animatedImagesView:(JSAnimatedImagesView *)animatedImagesView imageAtIndex:(NSUInteger)index {

    UIImage *image = nil;

    animatedImagesView.tag == kUpJsView ? (image = self.upDataSource[index]) : (image = self.downDataSource[index]);

    return image;

}

#pragma mark - Overwrite methods.

- (void)buildTitleView {

    [super buildTitleView];

    // Title label.

    UILabel *headlinelabel      = [UILabel new];

    headlinelabel.font          = [UIFont HeitiSCWithFontSize:.f];

    headlinelabel.textAlignment = NSTextAlignmentCenter;

    headlinelabel.textColor     = [UIColor cyanColor];

    headlinelabel.text          = self.title;

    [headlinelabel sizeToFit];

    headlinelabel.center = self.titleView.middlePoint;

    FBShimmeringView *shimmeringView           = [[FBShimmeringView alloc] initWithFrame:self.titleView.bounds];

    shimmeringView.shimmering                  = YES;

    shimmeringView.shimmeringBeginFadeDuration = 0.3;

    shimmeringView.shimmeringOpacity           = 0.1f;

    shimmeringView.shimmeringAnimationOpacity  = .f;

    [self.titleView addSubview:shimmeringView];

    shimmeringView.contentView = headlinelabel;

    // Line.

    UIView *line         = [[UIView alloc] initWithFrame:CGRectMake(, 63.5, self.view.width, 0.5f)];

    line.backgroundColor = [[UIColor grayColor] colorWithAlphaComponent:0.25f];

    [self.titleView addSubview:line];

    [self.titleView addSubview:headlinelabel];

    // Back button.

    UIImage  *image      = [UIImage imageNamed:@"backIconVer2"];

    UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(, , , )];

    backButton.center    = CGPointMake(, self.titleView.middleY);

    [backButton setImage:image forState:UIControlStateNormal];

    [backButton addTarget:self action:@selector(popSelf) forControlEvents:UIControlEventTouchUpInside];

    [backButton.imageView setContentMode:UIViewContentModeCenter];

    [self.titleView addSubview:backButton];

}

- (void)popSelf {

    [self popViewControllerAnimated:YES];

}

@end

细节

//

//  CutOutClearView.h

//  Animations

//

//  Created by YouXianMing on 16/7/10.

//  Copyright © 2016年 YouXianMing. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface CutOutClearView : UIView

/**

 *  The total fill color, you can used it as the view's background color.

 */

@property (nonatomic, strong) UIColor  *fillColor;

/**

 *  The paths area color.

 */

@property (nonatomic, strong) UIColor  *areaColor;

/**

 *  Path array.

 */

@property (nonatomic, strong) NSArray  <UIBezierPath *>  *paths;

@end

//

//  CutOutClearView.m

//  Animations

//

//  Created by YouXianMing on 16/7/10.

//  Copyright © 2016年 YouXianMing. All rights reserved.

//

#import "CutOutClearView.h"

@implementation CutOutClearView

- (instancetype)initWithFrame:(CGRect)frame {

    if (self = [super initWithFrame:frame]) {

        self.fillColor       = [UIColor whiteColor];

        self.backgroundColor = [UIColor clearColor];

        self.opaque          = NO;

    }

    return self;

}

- (void)drawRect:(CGRect)rect {

    [super drawRect:rect];

    [self.fillColor setFill];

    UIRectFill(rect);

    CGContextRef context = UIGraphicsGetCurrentContext();

    if (self.areaColor && self.paths.count) {

        UIBezierPath *path = nil;

        for (int i = ; i < self.paths.count; i++) {

            i ==  ? path = self.paths[i] : [path appendPath:self.paths[i]];

        }

        CGFloat red   = ;

        CGFloat green = ;

        CGFloat blue  = ;

        CGFloat alpha = ;

        [self.areaColor getRed:&red green:&green blue:&blue alpha:&alpha];

        CGContextAddPath(context, path.CGPath);

        CGContextSetRGBFillColor(context, red, green, blue, alpha);

        CGContextFillPath(context);

    } else {

        for (UIBezierPath *path in self.paths) {

            CGContextAddPath(context, path.CGPath);

            CGContextSetBlendMode(context, kCGBlendModeClear);

            CGContextFillPath(context);

        }

    }

}

@end