02-关键帧动画

// ViewController.h
//
// ViewController.h
// 02-关键帧动画
//
// Created by apple on 13-12-23.
// Copyright (c) 2013年itcast. All rights reserved.
//
#import
@interfaceViewController :UIViewController
@end
// ViewController.m
//
// ViewController.m
// 02-关键帧动画
//
// Created by apple on 13-12-23.
// Copyright (c) 2013年itcast. All rights reserved.
//
#import"ViewController.h"
#import"MyView.h"
@interfaceViewController()
{
MyView*_myView;
}
@end
@implementationViewController
- (void)viewDidLoad
{
[superviewDidLoad];
_myView= [[MyViewalloc]initWithFrame:CGRectMake(50,50,100,100)];
[self.viewaddSubview:_myView];
}
#pragma mark -触摸事件
- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
UITouch*touch = touches.anyObject;
CGPointlocation = [touchlocationInView:self.view];
// [_myView moveCurveTo:location];
[_myViewshake];
}
@end
// MyView.h
//
// MyView.h
// 02-关键帧动画
//
// Created by apple on 13-12-23.
// Copyright (c) 2013年itcast. All rights reserved.
//
#import
@interfaceMyView :UIView
#pragma mark摇晃动画
- (void)shake;
#pragma mark曲线运动（两个个控制点的曲线）
- (void)moveCurveTo:(CGPoint)to;
#pragma mark曲线运动
- (void)moveQuadTo:(CGPoint)to;
#pragma mark按照路径运行的动画
- (void)moveRectPathBy:(CGPoint)by;
#pragma mark移动到目标点
- (void)moveTo:(CGPoint)to;
@end
// MyView.m
//
// MyView.m
// 02-关键帧动画
//
// Created by apple on 13-12-23.
// Copyright (c) 2013年itcast. All rights reserved.
//
#import"MyView.h"
@implementationMyView
- (id)initWithFrame:(CGRect)frame
{
self= [superinitWithFrame:frame];
if(self) {
self.backgroundColor= [UIColorredColor];
}
returnself;
}
#pragma mark -动画代理方法
- (void)animationDidStop:(CAAnimation*)anim finished:(BOOL)flag
{
//修正动画结束的位置
// CAKeyframeAnimation *animation = (CAKeyframeAnimation *)anim;
// NSValue *p = animation.values.lastObject;
//
// self.center = [p CGPointValue];
// 1.取出动画类型
NSString*type = [animvalueForKey:@"animationType"];
if([typeisEqualToString:@"moveAnimation"]) {
CGPointto = [[animvalueForKey:@"targetPosition”] CGPointValue];
self.center= to;
}
}
#pragma mark -随机点方法
- (CGPoint)randomPoint
{
CGSizesize =self.superview.bounds.size;
CGFloatx =arc4random_uniform(size.width);
CGFloaty =arc4random_uniform(size.height);
returnCGPointMake(x, y);
}
#pragma mark -按照路径平移的关键帧动画
- (CAKeyframeAnimation*)moveWithPath:(CGPathRef)path duration:(NSTimeInterval)duration
{
// 1.动画
CAKeyframeAnimation*anim = [CAKeyframeAnimationanimationWithKeyPath:@"position"];
// 2.设置路径
anim.path= path;
// 3.设置时长
anim.duration= duration;
returnanim;
}
#pragma mark -动画方法
#pragma mark摇晃动画
- (void)shake
{
// 1.动画
CAKeyframeAnimation*anim = [CAKeyframeAnimationanimationWithKeyPath:@"transform.rotation"];
// 2.设置角度
CGFloatangle =M_PI_4/10;
anim.values=@[@(-angle),@(angle),@(-angle)];
anim.duration=0.2f;
anim.repeatCount=HUGE_VALF;
[self.layeraddAnimation:animforKey:nil];
}
#pragma mark曲线运动（两个个控制点的曲线）
//提示：不适合做过大的视图的动画，比较适合做小的颗粒效果，或者小飞虫之类的粒子效果
- (void)moveCurveTo:(CGPoint)to
{
//设置路径
CGMutablePathRefpath =CGPathCreateMutable();
//初始点
CGPathMoveToPoint(path,NULL,self.center.x,self.center.y);
//设置路径
CGPointp1 = [selfrandomPoint];
CGPointp2 = [selfrandomPoint];
CGPathAddCurveToPoint(path,NULL, p1.x, p1.y, p2.x, p2.y, to.x, to.y);
CAKeyframeAnimation*anim = [selfmoveWithPath:pathduration:1.0f];
//释放路径
CGPathRelease(path);
//利用KVC来记录目标点，在程序运行时，动态为anim添加了两个属性
// 1.记录目标点
[animsetValue:[NSValuevalueWithCGPoint:to]forKey:@"targetPosition"];
// 2.记录动画类型
[animsetValue:@"moveAnimation"forKey:@"animationType"];
// 3.设置代理
[animsetDelegate:self];
[self.layeraddAnimation:animforKey:nil];
}
#pragma mark曲线运动（一个控制点的曲线）
- (void)moveQuadTo:(CGPoint)to
{
//设置路径
CGMutablePathRefpath =CGPathCreateMutable();
//起始点
CGPathMoveToPoint(path,NULL,self.center.x,self.center.y);
//设置路径(曲线路径)
CGPathAddQuadCurveToPoint(path,NULL,320,460, to.x, to.y);
CAKeyframeAnimation*anim = [selfmoveWithPath:pathduration:1.0f];
//释放路径
CGPathRelease(path);
//利用KVC来记录目标点，在程序运行时，动态为anim添加了两个属性
// 1.记录目标点
[animsetValue:[NSValuevalueWithCGPoint:to]forKey:@"targetPosition"];
// 2.记录动画类型
[animsetValue:@"moveAnimation"forKey:@"animationType"];
// 3.设置代理
[animsetDelegate:self];
[self.layeraddAnimation:animforKey:nil];
}
#pragma mark按照路径运行的动画
- (void)moveRectPathBy:(CGPoint)by
{
// 1.动画
CAKeyframeAnimation*anim = [CAKeyframeAnimationanimationWithKeyPath:@"position"];
// 2.路径
CGMutablePathRefpath =CGPathCreateMutable();
CGPointstart =self.center;
CGRectrect =CGRectMake(start.x, start.y, by.x- start.x, by.y- start.y);
CGPathAddRect(path,NULL, rect);
//将路径添加到动画
anim.path= path;
//释放路径
CGPathRelease(path);
anim.duration=1.0f;
[self.layeraddAnimation:animforKey:nil];
}
#pragma mark平移到目标点
- (void)moveTo:(CGPoint)to
{
//在做动画时，最忌讳一成不变的动画！无论多么绚丽的动画，用户都会审美疲劳的
//增加动画的随机性和不可预见性，非常非常重要！
//增加一个中间点
//中心点用个多个随机点
// 1.动画
CAKeyframeAnimation*anim = [CAKeyframeAnimationanimationWithKeyPath:@"position"];
NSIntegercount =arc4random_uniform(5) +2;
NSMutableArray*arrayM = [NSMutableArrayarrayWithCapacity:count +2];
//起始点
NSValue*p1 = [NSValuevalueWithCGPoint:self.center];
[arrayMaddObject:p1];
for(NSIntegeri =0; i < count; i++) {
NSValue*p2 = [NSValuevalueWithCGPoint:[selfrandomPoint]];
[arrayMaddObject:p2];
}
//目标点
NSValue*p3 = [NSValuevalueWithCGPoint:to];
[arrayMaddObject:p3];
anim.values= arrayM;
anim.duration=1.0f;
anim.removedOnCompletion=NO;
anim.fillMode=kCAFillModeForwards;
anim.delegate=self;
[self.layeraddAnimation:animforKey:nil];
}
#pragma mark平移到目标点
- (void)moveTo1:(CGPoint)to
{
//增加一个中间点
//中心点用个随机点
// 1.动画
CAKeyframeAnimation*anim = [CAKeyframeAnimationanimationWithKeyPath:@"position"];
NSValue*p1 = [NSValue valueWithCGPoint:self.center];
NSValue*p2 = [NSValue valueWithCGPoint:[selfrandomPoint]];
NSValue*p3 = [NSValue valueWithCGPoint:to];
anim.values=@[p1, p2, p3];
anim.duration=1.0f;
anim.removedOnCompletion=NO;
anim.fillMode=kCAFillModeForwards;
anim.delegate=self;
[self.layeraddAnimation:animforKey:nil];
}
@end

02

02-关键帧动画

// ViewController.h

// ViewController.m

// MyView.h

// MyView.m