IOS基础之UIDynamicAnimator动力学入门-01

IOS基础之UIDynamicAnimator动力学入门

01-重力

//
//  ViewController.m
//  01-重力
//
//  Created by 鲁军 on 2021/4/15.
//#import "ViewController.h"@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];//3把行为添加到动画者当中[self.animator addBehavior:gravity];
//    gravity.angle = M_PI; //用角度的形式设置方向
//    gravity.gravityDirection = CGVectorMake(1, 1);  //右下角跑//    gravity.magnitude = 100;//重力的量级。即重力加速度}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;}@end

02-碰撞

//
//  ViewController.m
//  02-碰撞
//
//  Created by 鲁军 on 2021/4/15.
//#import "ViewController.h"@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;}@end

03-碰撞与另外一个Item碰撞

//
//  ViewController.m
//  03-碰撞与另外一个Item碰撞
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"#define H [UIScreen mainScreen].bounds.size.height@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,weak)UIView *blueView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView,self.blueView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;UIView * blueView =[[UIView alloc] init ];blueView.backgroundColor = [UIColor blueColor];blueView.frame = CGRectMake(170,H - 50, 50, 50);[self.view addSubview:blueView];self.blueView = blueView;}@end

04-碰撞模式

//
//  ViewController.m
//  04-碰撞模式
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"#define H [UIScreen mainScreen].bounds.size.height@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,weak)UIView *blueView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView,self.blueView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//碰撞模式//UICollisionBehaviorModeItems 仅仅Item 和 Item 之间发生的碰撞//UICollisionBehaviorModeBoundaries 仅仅是和边界发生碰撞//UICollisionBehaviorModeEverything Item 和边界都发生碰撞   默认是everythingcollision.collisionMode = UICollisionBehaviorModeEverything;//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;UIView * blueView =[[UIView alloc] init ];blueView.backgroundColor = [UIColor blueColor];blueView.frame = CGRectMake(170,H - 50, 50, 50);[self.view addSubview:blueView];self.blueView = blueView;}@end

05- 碰撞行为-创建边界

//
//  ViewController.m
//  05-碰撞行为-创建边界
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"#define H [UIScreen mainScreen].bounds.size.height@interface BGView : UIView@end@implementation BGView- (void)drawRect:(CGRect)rect{//CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];UIBezierPath *path =  [[UIBezierPath alloc] init];[path moveToPoint:CGPointMake(0, 200)];[path addLineToPoint:CGPointMake(150, 250)];[path stroke];}@end@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,weak)UIView *blueView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController
//优先级是最高的
- (void)loadView{self.view = [[BGView alloc] initWithFrame:[UIScreen mainScreen].bounds];self.view.backgroundColor = [UIColor whiteColor];
}- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView,self.blueView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//添加边界//以一条线为边界// [collision addBoundaryWithIdentifier:@"key" fromPoint:CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];//以一个自定义的矩形框 为边界UIBezierPath *path = [UIBezierPath bezierPathWithRect:self.blueView.frame];[collision addBoundaryWithIdentifier:@"key" forPath:path];//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;UIView * blueView =[[UIView alloc] init ];blueView.backgroundColor = [UIColor blueColor];blueView.frame = CGRectMake(170,H - 150, 50, 50);[self.view addSubview:blueView];self.blueView = blueView;}@end

06-碰撞行为-action

//
//  ViewController.m
//  06-碰撞行为-action
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"#define H [UIScreen mainScreen].bounds.size.height@interface BGView : UIView
@property(nonatomic,assign)CGRect redRect;@end@implementation BGView- (void)drawRect:(CGRect)rect{//CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];/* UIBezierPath *path =  [[UIBezierPath alloc] init];[path moveToPoint:CGPointMake(0, 200)];[path addLineToPoint:CGPointMake(150, 250)];[path stroke];*/[[UIBezierPath bezierPathWithRect:self.redRect] stroke];}@end@interface ViewController()@property(nonatomic,weak)UIView *redView;
@property(nonatomic,weak)UIView *blueView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController
//优先级是最高的
- (void)loadView{self.view = [[BGView alloc] initWithFrame:[UIScreen mainScreen].bounds];self.view.backgroundColor = [UIColor whiteColor];
}- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView,self.blueView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//添加边界//以一条线为边界// [collision addBoundaryWithIdentifier:@"key" fromPoint:CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];//以一个自定义的矩形框 为边界UIBezierPath *path = [UIBezierPath bezierPathWithRect:self.blueView.frame];[collision addBoundaryWithIdentifier:@"key" forPath:path];collision.action = ^{NSLog(@"%@",NSStringFromCGRect(self.redView.frame));BGView *bgView = (BGView *)self.view;bgView.redRect = self.redView.frame;[self.view setNeedsDisplay]; //重绘if(self.redView.frame.size.width > 105){self.redView.backgroundColor = [UIColor yellowColor];}else {self.redView.backgroundColor = [UIColor redColor];}};//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;UIView * blueView =[[UIView alloc] init ];blueView.backgroundColor = [UIColor blueColor];blueView.frame = CGRectMake(170,H - 150, 50, 50);[self.view addSubview:blueView];self.blueView = blueView;}@end

07-碰撞的行为-代理方法

//
//  ViewController.m
//  07-碰撞的行为-代理方法
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"#define H [UIScreen mainScreen].bounds.size.height@interface BGView : UIView
@property(nonatomic,assign)CGRect redRect;@end@implementation BGView- (void)drawRect:(CGRect)rect{//CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];UIBezierPath *path =  [[UIBezierPath alloc] init];[path moveToPoint:CGPointMake(0, 200)];[path addLineToPoint:CGPointMake(150, 250)];[path stroke];[[UIBezierPath bezierPathWithRect:self.redRect] stroke];}@end@interface ViewController() <UICollisionBehaviorDelegate>@property(nonatomic,weak)UIView *redView;
@property(nonatomic,weak)UIView *blueView;
@property(nonatomic,strong)UIDynamicAnimator *animator;//使用强引用，不会立刻消失
@end@implementation ViewController
//优先级是最高的
- (void)loadView{self.view = [[BGView alloc] initWithFrame:[UIScreen mainScreen].bounds];self.view.backgroundColor = [UIColor whiteColor];
}- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//根据某一个范围 创建动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2根据某一个动力学元素，创建行为UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];// 3碰撞行为UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:@[self.redView,self.blueView]];//把引用的view 的Bounds 变成边界collision.translatesReferenceBoundsIntoBoundary = YES;//添加边界//以一条线为边界[collision addBoundaryWithIdentifier:@"key1" fromPoint:CGPointMake(0, 200) toPoint:CGPointMake(150, 250)];//以一个自定义的矩形框 为边界UIBezierPath *path = [UIBezierPath bezierPathWithRect:self.blueView.frame];[collision addBoundaryWithIdentifier:@"key2" forPath:path];collision.action = ^{//  NSLog(@"%@",NSStringFromCGRect(self.redView.frame));BGView *bgView = (BGView *)self.view;bgView.redRect = self.redView.frame;[self.view setNeedsDisplay]; //重绘};//设置代理collision.collisionDelegate = self;//4把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:collision];}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;UIView * blueView =[[UIView alloc] init ];blueView.backgroundColor = [UIColor blueColor];blueView.frame = CGRectMake(170,H - 150, 50, 50);[self.view addSubview:blueView];self.blueView = blueView;}- (void)collisionBehavior:(UICollisionBehavior *)behavior beganContactForItem:(id<UIDynamicItem>)item1 withItem:(id<UIDynamicItem>)item2 atPoint:(CGPoint)p{}
//代理方法
- (void)collisionBehavior:(UICollisionBehavior *)behavior beganContactForItem:(id<UIDynamicItem>)item withBoundaryIdentifier:(id<NSCopying>)identifier atPoint:(CGPoint)p{//强制转化 NSString *str = (NSString *) identifier;if( [str isEqualToString:@"key1"]){self.redView.backgroundColor = [UIColor orangeColor];}else{self.redView.backgroundColor =[UIColor redColor];}
}@end

08-甩行为

//
//  ViewController.m
//  08-甩行为
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"@interface ViewController ()
@property(nonatomic,weak)UIView *redView;
@property(nonatomic,strong)UIDynamicAnimator *animator;
@end@implementation ViewController
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//获取触摸对象UITouch *t = touches.anyObject;CGPoint p = [t locationInView:t.view];//1动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2创建行为UISnapBehavior *snap = [[UISnapBehavior alloc] initWithItem:self.redView snapToPoint:p];//damping 阻尼 值越小 晃动越大 0 - 2。 减速 属性 snap.damping = 2;//3把行为添加到动画者当中[self.animator addBehavior:snap];}
- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;
}@end

09-附着行为

//
//  ViewController.m
//  09-附着行为
//
//  Created by 鲁军 on 2021/4/17.
//#import "ViewController.h"@interface BGView : UIView
@property(nonatomic,assign)CGPoint startPoint;
@property(nonatomic,assign)CGPoint endPoint;
@end@implementation BGView- (void)drawRect:(CGRect)rect{UIBezierPath *path =   [UIBezierPath bezierPath];[path moveToPoint:self.startPoint];[path addLineToPoint:self.endPoint];[path stroke];
}@end@interface ViewController ()
@property(nonatomic,weak)UIView *redView;
@property(nonatomic,strong)UIDynamicAnimator *animator;
@property(nonatomic,strong)UIAttachmentBehavior *attach;
@end@implementation ViewController
- (void)loadView{self.view = [[BGView alloc] initWithFrame:[UIScreen mainScreen].bounds];self.view.backgroundColor = [UIColor whiteColor];
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//获取触摸对象UITouch *t = touches.anyObject;CGPoint p = [t locationInView:t.view];//1动画者对象self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];//2创建行为//刚性附着self.attach = [[UIAttachmentBehavior alloc] initWithItem:self.redView attachedToAnchor:p];self.attach.length = 100;UIGravityBehavior * gravity = [[UIGravityBehavior alloc] initWithItems:@[self.redView]];//3把行为添加到动画者当中[self.animator addBehavior:gravity];[self.animator addBehavior:self.attach];}- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{//获取触摸对象UITouch *t = touches.anyObject;CGPoint p = [t locationInView:t.view];self.attach.anchorPoint = p;__weak ViewController *weakView = self;self.attach.action= ^{BGView *bgView = (BGView *) weakView.view;bgView.startPoint = weakView.redView.center;bgView.endPoint = p;[weakView.view setNeedsDisplay];};}- (void)viewDidLoad {[super viewDidLoad];UIView * redView =[[UIView alloc] init ];redView.backgroundColor = [UIColor redColor];redView.frame = CGRectMake(100, 100, 100, 100);[self.view addSubview:redView];self.redView = redView;self.redView.alpha = 0.5;
}@end

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