//
//  JLViewController.m
//  09-核心動畫
//
//  Created by XinYou on 15-4-2.
//  Copyright (c) 2015年 vxinyou. All rights reserved.
//

#import "JLViewController.h"

@interface JLViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *iconView;

- (IBAction)multiPosition;
- (IBAction)surroundCircle;
- (IBAction)back;
@end

@implementation JLViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    
}
/**
 *  平移到多個不同的位置
 */
- (IBAction)multiPosition {
    // 1,建立動畫
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    
    // 2,設定動畫物件
    // 設定CALayer要修改的屬性
    anim.keyPath = @"position";
    
    NSValue *v1 = [NSValue valueWithCGPoint:CGPointMake(160, 90)];
    NSValue *v2 = [NSValue valueWithCGPoint:CGPointMake(160, 190)];
    NSValue *v3 = [NSValue valueWithCGPoint:CGPointMake(260, 190)];
    NSValue *v4 = [NSValue valueWithCGPoint:CGPointMake(260, 90)];
    
    // 設定position屬性的每一幀要改變的值
    anim.values = @[v1, v2, v3, v4];
    
    // 設定動畫持續時間
    anim.duration = 2.0;
    
    // 保持動畫執行完畢後的狀態
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;
    
    // 3,新增動畫
    [self.iconView.layer addAnimation:anim forKey:nil];
}
/**
 *  繞圓平移
 */
- (IBAction)surroundCircle {
    
    // 1,建立動畫
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    
    // 2,設定動畫物件
    anim.keyPath = @"position";
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;
    anim.duration = 2.0;
    
    // 建立路徑
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathAddEllipseInRect(path, NULL, CGRectMake(90, 90, 100, 100));
    
    // 設定路徑
    anim.path = path;
    CGPathRelease(path);
    
    // 3,新增動畫
    [self.iconView.layer addAnimation:anim forKey:nil];
}
/**
 *  還原
 */
- (IBAction)back {
    
    [self.iconView.layer removeAllAnimations];
}
@end