基廉列克雜記本: Core Animation的基本使用(六)

在CABasicAnimation中，除了前一篇的淡化外，還有一些功能，如移動/縮放/旋轉。

官方文件
Core Animation Extensions To Key-Value Coding

實作的部分，就沿用前一篇的專案來作修改

1. 在StoryBoard上加入一些Button

2. 在mainViewController.m加入所需程式碼。

#import "mainViewController.h"
#import "CALayerAdditions.h"

@interface mainViewController ()

@end

#define ORGINAL_POSITION CGPointMake(350, 450)
#define MOVED_POSITON CGPointMake(450, 350)

#define DEGREES_TO_RADIANS(d) (d * M_PI / 180)

@implementation mainViewController

@synthesize layer, actionsSwitch;
@synthesize layer2;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    layer = [CALayer layer];
    layer.bounds = CGRectMake(0, 0, 200, 200);
    layer.position = ORGINAL_POSITION;   ///CGPointMake(500, 300);
    layer.backgroundColor = [UIColor redColor].CGColor;
    layer.borderColor = [UIColor blackColor].CGColor;
    layer.opacity = 1.0f;
    [self.view.layer addSublayer:layer];

    actionsSwitch.on = NO;

    UIImage *image = [UIImage imageNamed:@"TaiwanMap.jpg"];
    layer2 = [CALayer layer];
    layer2.contents = (id)image.CGImage;
    layer2.bounds = CGRectMake(0, 0, 200, 200);
layer2.position = CGPointMake(350, 650);
    [self.view.layer addSublayer:layer2];

    //UIGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fadeIt)];
    //[self.view addGestureRecognizer:recognizer];

}

/*
- (void)fadeIt {
    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    animation.toValue = [NSNumber numberWithFloat:0.0];
    animation.fromValue = [NSNumber numberWithFloat:layer.opacity];
    animation.duration = 3.0;
    layer2.opacity = 0.0; // This is required to update the model's value. Comment out to see what happens.
    [layer2 addAnimation:animation forKey:@"animateOpacity"];
}
*/

- (IBAction)opacity:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    animation.toValue = [NSNumber numberWithFloat:0.0];
    animation.fromValue = [NSNumber numberWithFloat:layer.opacity];
    animation.duration = 3.0;
    layer2.opacity = 0.0; // This is required to update the model's value. Comment out to see what happens.
    [layer2 addAnimation:animation forKey:@"animateOpacity"];
}
- (IBAction)translationX:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
    animation.toValue = [NSNumber numberWithFloat:100.0];
    //animation.fromValue = [NSNumber numberWithFloat:layer.opacity];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

   // [imageLayer addAnimation:[self animationOpen] forKey:@"Open"];

}
- (IBAction)translationY:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.translation.y"];
    animation.toValue = [NSNumber numberWithFloat:100.0];
    //animation.fromValue = [NSNumber numberWithFloat:layer.opacity];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

}
- (IBAction)translationZ:(id)sender {
    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.translation.z"];
    animation.toValue = [NSNumber numberWithFloat:100.0];
    //animation.fromValue = [NSNumber numberWithFloat:layer.opacity];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];
}
- (IBAction)scale:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
    animation.toValue = [NSNumber numberWithFloat:2.0];
    animation.fromValue = [NSNumber numberWithFloat:1.0];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

}
- (IBAction)rotationX:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];
    animation.toValue = [NSNumber numberWithFloat:(DEGREES_TO_RADIANS(120))];
    animation.fromValue = [NSNumber numberWithFloat:1.0];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

}
- (IBAction)rotationY:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];
    animation.toValue = [NSNumber numberWithFloat:(DEGREES_TO_RADIANS(120))];
    animation.fromValue = [NSNumber numberWithFloat:1.0];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

}
- (IBAction)rotationZ:(id)sender {

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    animation.toValue = [NSNumber numberWithFloat:(DEGREES_TO_RADIANS(120))];
    animation.fromValue = [NSNumber numberWithFloat:1.0];
    animation.duration = 3.0;
    animation.removedOnCompletion=NO;
    animation.fillMode=kCAFillModeForwards;

    [layer2 addAnimation:animation forKey:@"Open"];

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)toggleCorner:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];
    layer.cornerRadius = (layer.cornerRadius == 0.0f) ? 30.0f : 0.0f;
}
- (IBAction)toggleColor:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];
    CGColorRef redColor = [UIColor redColor].CGColor, blueColor = [UIColor blueColor].CGColor;
    layer.backgroundColor = (layer.backgroundColor == redColor) ? blueColor : redColor;
}
- (IBAction)toggleOpacity:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];
    layer.opacity = (layer.opacity == 1.0f) ? 0.5f : 1.0f;
}
- (IBAction)togglePosition:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];
    layer.position = layer.position.x == 500 ? MOVED_POSITON : ORGINAL_POSITION;
}
- (IBAction)toggleBorders:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];
    layer.borderWidth = (layer.borderWidth == 0.0f) ? 10.0f : 0.0f;
}
- (IBAction)toggleBounds:(id)sender {
    [CATransaction setDisableActions:actionsSwitch.on];

    [layer adjustWidthBy:layer.bounds.size.width == layer.bounds.size.height ? 100 : -100];

}

@end