使用CAReplicatorLayer [2]

使用CAReplicatorLayer [2]

工具类

//
//  Math.h
//  MathEquation
//
//  Created by YouXianMing on 15/11/20.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

struct MATHPoint {

    CGFloat x;
    CGFloat y;

}; typedef struct MATHPoint MATHPoint;

static inline MATHPoint MATHPointMake(CGFloat x, CGFloat y) {

    MATHPoint p; p.x = x; p.y = y; return p;
}

@interface Math : NSObject

#pragma mark - Radian & degree.

/**
 *  Convert radian to degree.
 *
 *  @param radian Radian.
 *
 *  @return Degree.
 */
+ (CGFloat)degreeFromRadian:(CGFloat)radian;

/**
 *  Convert degree to radian.
 *
 *  @param degree Degree.
 *
 *  @return radian.
 */
+ (CGFloat)radianFromDegree:(CGFloat)degree;

#pragma mark - Calculate radian.

/**
 *  Radian value from math 'tan' function.
 *
 *  @param sideA Side A
 *  @param sideB Side B
 *
 *  @return Radian value.
 */
+ (CGFloat)radianValueFromTanSideA:(CGFloat)sideA sideB:(CGFloat)sideB;

#pragma mark - Calculate once linear equation (Y = kX + b).

@property (nonatomic) CGFloat  k;
@property (nonatomic) CGFloat  b;

/**
 *  Calculate constant & slope by two math point for once linear equation.
 *
 *  @param pointA Point A.
 *  @param pointB Point B.
 *
 *  @return Math object.
 */
+ (instancetype)mathOnceLinearEquationWithPointA:(MATHPoint)pointA PointB:(MATHPoint)pointB;

/**
 *  Get X value when Y equal some number.
 *
 *  @param yValue Some number.
 *
 *  @return X number.
 */
- (CGFloat)xValueWhenYEqual:(CGFloat)yValue;

/**
 *  Get Y value when X equal some number.
 *
 *  @param xValue Some number.
 *
 *  @return Y number.
 */
- (CGFloat)yValueWhenXEqual:(CGFloat)xValue;

#pragma mark - Reset size.

/**
 *  Get the new size with the fixed width.
 *
 *  @param size  Old size.
 *  @param width The fixed width.
 *
 *  @return New size.
 */
+ (CGSize)resetFromSize:(CGSize)size withFixedWidth:(CGFloat)width;

/**
 *  Get the new size with the fixed height.
 *
 *  @param size   Old size.
 *  @param height The fixed width.
 *
 *  @return New size.
 */
+ (CGSize)resetFromSize:(CGSize)size withFixedHeight:(CGFloat)height;

@end

//
//  Math.m
//  MathEquation
//
//  Created by YouXianMing on 15/11/20.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import "Math.h"

@implementation Math

+ (CGFloat)degreeFromRadian:(CGFloat)radian {

    return ((radian) * (180.0 / M_PI));
}

+ (CGFloat)radianFromDegree:(CGFloat)degree {

    return ((degree) * M_PI / .f);
}

+ (CGFloat)radianValueFromTanSideA:(CGFloat)sideA sideB:(CGFloat)sideB {

    return atan2f(sideA, sideB);
}

CGFloat calculateSlope(CGFloat x1, CGFloat y1, CGFloat x2, CGFloat y2) {

    if (x2 == x1) {

        return ;
    }

    return (y2 - y1) / (x2 - x1);
}

CGFloat calculateConstant(CGFloat x1, CGFloat y1, CGFloat x2, CGFloat y2) {

    if (x2 == x1) {

        return ;
    }

    return (y1*(x2 - x1) - x1*(y2 - y1)) / (x2 - x1);
}

+ (instancetype)mathOnceLinearEquationWithPointA:(MATHPoint)pointA PointB:(MATHPoint)pointB {

    Math *equation = [[[self class] alloc] init];

    CGFloat x1 = pointA.x; CGFloat y1 = pointA.y;
    CGFloat x2 = pointB.x; CGFloat y2 = pointB.y;

    equation.k = calculateSlope(x1, y1, x2, y2);
    equation.b = calculateConstant(x1, y1, x2, y2);

    return equation;
}

- (CGFloat)xValueWhenYEqual:(CGFloat)yValue {

    if (_k == ) {

        return ;
    }

    return (yValue - _b) / _k;
}

- (CGFloat)yValueWhenXEqual:(CGFloat)xValue {

    return _k * xValue + _b;
}

+ (CGSize)resetFromSize:(CGSize)size withFixedWidth:(CGFloat)width {

    CGFloat newHeight = size.height * (width / size.width);
    CGSize  newSize   = CGSizeMake(width, newHeight);

    return newSize;
}

+ (CGSize)resetFromSize:(CGSize)size withFixedHeight:(CGFloat)height {

    float  newWidth = size.width * (height / size.height);
    CGSize newSize  = CGSizeMake(newWidth, height);

    return newSize;
}

@end

进行角度旋转

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "Math.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Create CAReplicatorLayer.
    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    replicatorLayer.frame              = CGRectMake(, , , );
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.borderColor        = [UIColor blackColor].CGColor;
    replicatorLayer.position           = self.view.center;
    [self.view.layer addSublayer:replicatorLayer];

    // Create Layer.
    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(, , , );
    layer.backgroundColor = [UIColor redColor].CGColor;
    [replicatorLayer addSublayer:layer];

    replicatorLayer.instanceCount     = ;
    CATransform3D transform           = CATransform3DIdentity;
    transform                         = CATransform3DRotate(transform, [Math radianFromDegree:.f], , , );
    replicatorLayer.instanceTransform = transform;
}

@end

进行颜色设置

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "Math.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Create CAReplicatorLayer.
    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    replicatorLayer.frame              = CGRectMake(, , , );
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.borderColor        = [UIColor blackColor].CGColor;
    replicatorLayer.position           = self.view.center;
    [self.view.layer addSublayer:replicatorLayer];

    // Create Layer.
    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(, , , );
    layer.backgroundColor = [UIColor whiteColor].CGColor;
    [replicatorLayer addSublayer:layer];

    replicatorLayer.instanceCount       = ;
    CATransform3D transform             = CATransform3DIdentity;
    transform                           = CATransform3DRotate(transform, [Math radianFromDegree:.f], , , );
    replicatorLayer.instanceTransform   = transform;
    replicatorLayer.instanceBlueOffset  = -0.2;
    replicatorLayer.instanceGreenOffset = -0.1;
    replicatorLayer.instanceRedOffset   = 0.1;

}

@end

设置第一个对象的颜色

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "Math.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Create CAReplicatorLayer.
    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    replicatorLayer.frame              = CGRectMake(, , , );
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.borderColor        = [UIColor blackColor].CGColor;
    replicatorLayer.position           = self.view.center;
    [self.view.layer addSublayer:replicatorLayer];

    // Create Layer.
    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(, , , );
    layer.backgroundColor = [UIColor whiteColor].CGColor;
    [replicatorLayer addSublayer:layer];

    replicatorLayer.instanceCount       = ;
    CATransform3D transform             = CATransform3DIdentity;
    transform                           = CATransform3DRotate(transform, [Math radianFromDegree:.f], , , );
    replicatorLayer.instanceTransform   = transform;
    replicatorLayer.instanceColor       = [[UIColor redColor] colorWithAlphaComponent:0.3f].CGColor;
    replicatorLayer.instanceBlueOffset  = -0.3f;
    replicatorLayer.instanceGreenOffset = -0.3f;
    replicatorLayer.instanceRedOffset   = -0.3f;
}

@end

综合使用

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "Math.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Create CAReplicatorLayer.
    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    replicatorLayer.frame              = CGRectMake(, , , );
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.borderColor        = [UIColor blackColor].CGColor;
    replicatorLayer.position           = self.view.center;
    [self.view.layer addSublayer:replicatorLayer];

    // Create Layer.
    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(, , , );
    layer.backgroundColor = [UIColor whiteColor].CGColor;
    [replicatorLayer addSublayer:layer];

    {
        CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position.y"];
        animation.toValue           = @(layer.position.y - .f);
        animation.duration          = 0.5f;
        animation.autoreverses      = true;
        animation.repeatCount       = CGFLOAT_MAX;
        [layer addAnimation:animation forKey:nil];
    }

    replicatorLayer.instanceCount       = ;
    CATransform3D transform             = CATransform3DIdentity;
    transform                           = CATransform3DRotate(transform, [Math radianFromDegree:.f], , , );
    replicatorLayer.instanceTransform   = transform;
    replicatorLayer.instanceColor       = [[UIColor redColor] colorWithAlphaComponent:0.3f].CGColor;
    replicatorLayer.instanceBlueOffset  = -0.3f;
    replicatorLayer.instanceGreenOffset = -0.3f;
    replicatorLayer.instanceRedOffset   = -0.3f;
    replicatorLayer.instanceDelay       = 0.1f;

    {
        CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"instanceCount"];
        animation.fromValue         = @(replicatorLayer.instanceCount);
        animation.toValue           = @();
        animation.duration          = 0.3f;
        animation.autoreverses      = true;
        animation.repeatCount       = CGFLOAT_MAX;
        [replicatorLayer addAnimation:animation forKey:nil];
    }
}

@end

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    CGFloat width  = self.view.frame.size.width;
    CGFloat height = ;

    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    [self.view.layer addSublayer:replicatorLayer];

    replicatorLayer.frame              = CGRectMake(, , width, height);
    replicatorLayer.position           = self.view.center;
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.instanceCount      = width / ;
    replicatorLayer.masksToBounds      = YES;
    replicatorLayer.instanceTransform  = CATransform3DMakeTranslation(-3.0, 0.0, 0.0);
    replicatorLayer.instanceDelay      = 0.025f;

    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(width - , height, , );
    layer.backgroundColor = [UIColor redColor].CGColor;
    [replicatorLayer addSublayer:layer];

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position.y"];
    animation.toValue           = @(layer.position.y - .f);
    animation.duration          = 0.5f;
    animation.timingFunction    = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    animation.autoreverses      = true;
    animation.repeatCount       = CGFLOAT_MAX;
    [layer addAnimation:animation forKey:nil];
}

@end

https://github.com/YouXianMing/GCD-Program

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "GCD.h"

@interface ViewController ()

@property (nonatomic, strong) GCDTimer  *timer;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    CGFloat width  = self.view.frame.size.width;
    CGFloat height = ;

    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    [self.view.layer addSublayer:replicatorLayer];

    replicatorLayer.frame              = CGRectMake(, , width, height);
    replicatorLayer.position           = self.view.center;
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.instanceCount      = width / ;
    replicatorLayer.masksToBounds      = YES;
    replicatorLayer.instanceTransform  = CATransform3DMakeTranslation(-3.0, 0.0, 0.0);
    replicatorLayer.instanceDelay      = 0.025f;

    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(width - , height, , );
    layer.backgroundColor = [UIColor redColor].CGColor;
    [replicatorLayer addSublayer:layer];

    self.timer = [[GCDTimer alloc] initInQueue:[GCDQueue mainQueue]];
    [self.timer event:^{

        CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position.y"];
        animation.toValue           = @(layer.position.y - arc4random() % );
        animation.duration          = 0.5f;
        animation.timingFunction    = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        animation.autoreverses      = true;
        animation.repeatCount       = CGFLOAT_MAX;
        [layer addAnimation:animation forKey:nil];

    } timeIntervalWithSecs:.f delaySecs:.f];
    [self.timer start];
}

@end

//
//  ViewController.m
//  CAReplicatorLayer
//
//  Created by YouXianMing on 16/1/13.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "Math.h"
#import "GCD.h"

@interface ViewController ()

@property (nonatomic, strong) GCDTimer  *timer;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    CGFloat width  = self.view.frame.size.width;
    CGFloat height = ;

    CAReplicatorLayer *replicatorLayer = [CAReplicatorLayer layer];
    [self.view.layer addSublayer:replicatorLayer];

    replicatorLayer.frame              = CGRectMake(, , width, height);
    replicatorLayer.position           = self.view.center;
    replicatorLayer.borderWidth        = 0.5f;
    replicatorLayer.instanceCount      = width / ;
    replicatorLayer.masksToBounds      = YES;
    replicatorLayer.instanceTransform  = CATransform3DMakeTranslation(-3.0, 0.0, 0.0);
    replicatorLayer.instanceDelay      = 0.5f;

    CALayer *layer        = [CALayer layer];
    layer.frame           = CGRectMake(width - , height, , );
    layer.backgroundColor = [UIColor redColor].CGColor;
    [replicatorLayer addSublayer:layer];

    self.timer = [[GCDTimer alloc] initInQueue:[GCDQueue mainQueue]];
    [self.timer event:^{

        CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position.y"];
        animation.toValue           = @(layer.position.y - arc4random() % );
        animation.duration          = 0.5f;
        animation.timingFunction    = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        animation.autoreverses      = true;
        animation.repeatCount       = CGFLOAT_MAX;
        [layer addAnimation:animation forKey:nil];

    } timeIntervalWithSecs:.f delaySecs:.f];
    [self.timer start];
}

@end