CATransform3D的m34值动画

CATransform3D的m34值动画

效果

源码

https://github.com/YouXianMing/Animations

//

//  CATransform3DM34Controller.m

//  Animations

//

//  Created by YouXianMing on 16/1/9.

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

//

#import "CATransform3DM34Controller.h"

#import "GCD.h"

#import "Math.h"

@interface CATransform3DM34Controller ()

@property (nonatomic, strong) CALayer   *layer;

@property (nonatomic, strong) GCDTimer  *timer;

@property (nonatomic)         BOOL       transformState;

@end

@implementation CATransform3DM34Controller

- (void)setup {

    [super setup];

    [self initLayer];

    [self timerEvent];

}

- (void)initLayer {

    // Init layer.

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

    self.layer             = [CALayer layer];

    self.layer.frame       = CGRectMake(, , image.size.width / .f, image.size.height / .f);

    self.layer.position    = self.view.center;

    self.layer.borderWidth = .f;

    self.layer.borderColor = [UIColor blackColor].CGColor;

    self.layer.contents    = (__bridge id)image.CGImage;

    [self.view.layer addSublayer:self.layer];

}

- (void)timerEvent {

    // Timer event.

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

    [self.timer event:^{

        if (self.transformState == NO) {

            self.transformState = YES;

            [self transformStateEvent];

        } else {

            self.transformState = NO;

            [self normalStateEvent];

        }

    } timeIntervalWithSecs:.f delaySecs:.f];

    [self.timer start];

}

- (void)transformStateEvent {

    // 初始化3D变换,获取默认值

    CATransform3D perspectiveTransform = CATransform3DIdentity;

    // 透视

    perspectiveTransform.m34 = -1.0/500.0;

    // 位移

    perspectiveTransform = CATransform3DTranslate(perspectiveTransform, , -, );

    // 空间旋转

    perspectiveTransform = CATransform3DRotate(perspectiveTransform, [Math radianFromDegree:], 0.75, , -0.5);

    // 缩放变换

    perspectiveTransform = CATransform3DScale(perspectiveTransform, 0.75, 0.75, 0.75);

    self.layer.transform = perspectiveTransform;

    self.layer.speed     = 0.5;

}

- (void)normalStateEvent {

    // 初始化3D变换,获取默认值

    CATransform3D perspectiveTransform = CATransform3DIdentity;

    self.layer.transform = perspectiveTransform;

    self.layer.speed     = 0.5;

}

@end

细节