//
// ViewController.m
// DMHeartFlyAnimation
//
// Created by Rick on 16/3/9.
// Copyright © 2016年 Rick. All rights reserved.
//
#import "ViewController.h"
#import "DMHeartFlyView.h"
@interface ViewController ()
{
CGFloat _heartSize;
NSTimer *_burstTimer;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_heartSize = 36;
self.view.backgroundColor = [UIColor lightGrayColor];
self.view.userInteractionEnabled = YES;
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(showTheLove)];
[self.view addGestureRecognizer:tapGesture];
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressGesture:)];
longPressGesture.minimumPressDuration = 0.2;
[self.view addGestureRecognizer:longPressGesture];
}
//点击
-(void)showTheLove{
DMHeartFlyView* heart = [[DMHeartFlyView alloc]initWithFrame:CGRectMake(0, 0, _heartSize, _heartSize)];
[self.view addSubview:heart];
CGPoint fountainSource = CGPointMake(20 + _heartSize/2.0, self.view.bounds.size.height - _heartSize/2.0 - 10);
heart.center = fountainSource;//创建的地方
[heart animateInView:self.view];
}
//长按
-(void)longPressGesture:(UILongPressGestureRecognizer *)longPressGesture{
switch (longPressGesture.state) {
case UIGestureRecognizerStateBegan:
_burstTimer = [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(showTheLove) userInfo:nil repeats:YES];
break;
case UIGestureRecognizerStateEnded:
[_burstTimer invalidate];
_burstTimer = nil;
break;
default:
break;
}
}
@end
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// DMHeartFlyView.h
// DMHeartFlyAnimation
//
// Created by Rick on 16/3/9.
// Copyright © 2016年 Rick. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface DMHeartFlyView : UIView
-(void)animateInView:(UIView *)view;
@end
//
// DMHeartFlyView.m
// DMHeartFlyAnimation
//
// Created by Rick on 16/3/9.
// Copyright © 2016年 Rick. All rights reserved.
//
#define DMRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1]
#define DMRGBAColor(r, g, b ,a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:a]
#define DMRandColor DMRGBColor(arc4random_uniform(255), arc4random_uniform(255), arc4random_uniform(255))
#import "DMHeartFlyView.h"
//@interface DMHeartTheme ()
//
//@end
//
//@implementation DMHeartTheme
//
//@end
@interface DMHeartFlyView ()
@property(nonatomic,strong) UIColor *strokeColor;
@property(nonatomic,strong) UIColor *fillColor;
@end
@implementation DMHeartFlyView
-(instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
_strokeColor = [UIColor whiteColor];
_fillColor = DMRandColor;
self.backgroundColor = [UIColor clearColor];
self.layer.anchorPoint = CGPointMake(0.5, 1);
}
return self;
}
static CGFloat PI = M_PI;
-(void)animateInView:(UIView *)view{
NSTimeInterval totalAnimationDuration = 6;
CGFloat heartSize = CGRectGetWidth(self.bounds);
CGFloat heartCenterX = self.center.x;
CGFloat viewHeight = CGRectGetHeight(view.bounds);
//Pre-Animation setup
self.transform = CGAffineTransformMakeScale(0, 0);
self.alpha = 0;
//Bloom弹簧效果
[UIView animateWithDuration:0.5 delay:0.0 usingSpringWithDamping:0.6 initialSpringVelocity:0.8 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.transform = CGAffineTransformIdentity;
self.alpha = 0.9;
} completion:NULL];
NSInteger i = arc4random_uniform(2);
NSInteger rotationDirection = 1- (2*i);// -1 OR 1
NSInteger rotationFraction = arc4random_uniform(10);
[UIView animateWithDuration:totalAnimationDuration animations:^{
self.transform = CGAffineTransformMakeRotation(rotationDirection * PI/(16 + rotationFraction*0.2));
} completion:NULL];
//上升路径
UIBezierPath *heartTravelPath = [UIBezierPath bezierPath];
[heartTravelPath moveToPoint:self.center];
//random end point
CGPoint endPoint = CGPointMake(heartCenterX + (rotationDirection) * arc4random_uniform(2*heartSize), viewHeight/6.0 + arc4random_uniform(viewHeight/4.0));
//random Control Points
NSInteger j = arc4random_uniform(2);
NSInteger travelDirection = 1- (2*j);// -1 OR 1
//randomize x and y for control points
CGFloat xDelta = (heartSize/2.0 + arc4random_uniform(2*heartSize)) * travelDirection;
CGFloat yDelta = MAX(endPoint.y ,MAX(arc4random_uniform(8*heartSize), heartSize));
CGPoint controlPoint1 = CGPointMake(heartCenterX + xDelta, viewHeight - yDelta);
CGPoint controlPoint2 = CGPointMake(heartCenterX - 2*xDelta, yDelta);
//上升的曲线
[heartTravelPath addCurveToPoint:endPoint controlPoint1:controlPoint1 controlPoint2:controlPoint2];
CAKeyframeAnimation *keyFrameAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
keyFrameAnimation.path = heartTravelPath.CGPath;
keyFrameAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
keyFrameAnimation.duration = totalAnimationDuration + endPoint.y/viewHeight;
[self.layer addAnimation:keyFrameAnimation forKey:@"positionOnPath"];
//Alpha & remove from superview
[UIView animateWithDuration:totalAnimationDuration animations:^{
self.alpha = 0.0;
} completion:^(BOOL finished) {
[self removeFromSuperview];
}];
}
-(void)drawRect:(CGRect)rect{
// UIImage *heartImage = [UIImage imageNamed:@"heart"];
// UIImage *heartImageBorder = [UIImage imageNamed:@"heartBorder"];
//
// //Draw background image (mimics border)
// UIGraphicsBeginImageContextWithOptions(heartImageBorder.size, NO, 0.0f);
// [_strokeColor setFill];
// CGRect bounds = CGRectMake(0, 0, heartImageBorder.size.width, heartImageBorder.size.height);
// UIRectFill(bounds);
// [heartImageBorder drawInRect:rect blendMode:kCGBlendModeNormal alpha:1.0];
// heartImageBorder = UIGraphicsGetImageFromCurrentImageContext();
// UIGraphicsEndImageContext();
//
// //Draw foreground heart image
// UIGraphicsBeginImageContextWithOptions(heartImage.size, NO, 0.0f);
// [_fillColor setFill];
// CGRect bounds1 = CGRectMake(0, 0, heartImage.size.width, heartImage.size.height);
// UIRectFill(bounds1);
// [heartImage drawInRect:rect blendMode:kCGBlendModeNormal alpha:1.0];
// heartImage = UIGraphicsGetImageFromCurrentImageContext();
// UIGraphicsEndImageContext();
[self drawHeartInRect:rect];
}
//画心
-(void)drawHeartInRect:(CGRect)rect{
[_strokeColor setStroke];
[_fillColor setFill];
CGFloat drawingPadding = 4.0;
CGFloat curveRadius = floor((CGRectGetWidth(rect) - 2*drawingPadding) / 4.0);
//Creat path
UIBezierPath *heartPath = [UIBezierPath bezierPath];
//1.Start at bottom heart tip// floor()向下取整
CGPoint tipLocation = CGPointMake(floor(CGRectGetWidth(rect) / 2.0), CGRectGetHeight(rect) - drawingPadding);
[heartPath moveToPoint:tipLocation];//起点
//2.Move to top left start of curve
CGPoint topLeftCurveStart = CGPointMake(drawingPadding, floor(CGRectGetHeight(rect) / 2.4));
[heartPath addQuadCurveToPoint:topLeftCurveStart controlPoint:CGPointMake(topLeftCurveStart.x, topLeftCurveStart.y + curveRadius)];////画二元曲线，一般和moveToPoint配合使用
//3.Create top left curve
[heartPath addArcWithCenter:CGPointMake(topLeftCurveStart.x + curveRadius, topLeftCurveStart.y) radius:curveRadius startAngle:PI endAngle:0 clockwise:YES];
//4.Create top right curve
CGPoint topRightCurveStart = CGPointMake(topLeftCurveStart.x + 2*curveRadius, topLeftCurveStart.y);
[heartPath addArcWithCenter:CGPointMake(topRightCurveStart.x + curveRadius, topRightCurveStart.y) radius:curveRadius startAngle:PI endAngle:0 clockwise:YES];
//5.Final curve to bottom heart tip
CGPoint topRightCurveEnd = CGPointMake(topLeftCurveStart.x + 4*curveRadius, topRightCurveStart.y);
[heartPath addQuadCurveToPoint:tipLocation controlPoint:CGPointMake(topRightCurveEnd.x, topRightCurveEnd.y + curveRadius)];
[heartPath fill];
heartPath.lineWidth = 1;
heartPath.lineCapStyle = kCGLineCapRound;
heartPath.lineJoinStyle = kCGLineCapRound;
[heartPath stroke];
}
@end