用drawRect以及CAReplicatorLayer绘制动态水波纹
大大简化了写水波纹效果的难度,你可以根据示例自己组装水波纹效果,本设计是几个工具组合在一起完成的效果, DrawRectObject 以及 ReplicatorLineAnimationView 均可以独立完成更复杂的功能.
说明
1. 用sine计算正玄曲线
2. 用CAReplicatorLayer实现重复移动的效果
效果
源码
https://github.com/YouXianMing/UI-Component-Collection 中的 DrawRectObject
//
// WaveView.h
// DrawRectObject
//
// Created by YouXianMing on 16/8/1.
// Copyright © 2016年 YouXianMing. All rights reserved.
// #import "CustomDrawingView.h" typedef enum : NSUInteger { kStrokeWave = 1 << 2,
kFillWave = 1 << 3 , } EWaveViewType; @interface WaveView : CustomDrawingView /**
* Wave type, default is kFillWave.
*/
@property (nonatomic) EWaveViewType type; /**
* Sine phase, default is 0.
*/
@property (nonatomic) CGFloat phase; /**
* Wave crest height, Default is 10.
*/
@property (nonatomic) CGFloat waveCrest; /**
* Full wave count, default is 1.
*/
@property (nonatomic) NSInteger waveCount; /**
* The fill style.
*/
@property (nonatomic, strong) DrawingStyle *fillStyle; /**
* The stroke style.
*/
@property (nonatomic, strong) DrawingStyle *strokeStyle; @end
//
// WaveView.m
// DrawRectObject
//
// Created by YouXianMing on 16/8/1.
// Copyright © 2016年 YouXianMing. All rights reserved.
// #import "WaveView.h" @implementation WaveView - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.waveCrest = 10.f;
self.waveCount = 1;
self.phase = 0.f;
self.type = kFillWave; DrawingStyle *fillStyle = [DrawingStyle new];
fillStyle.fillColor = [DrawingColor colorWithUIColor:[[UIColor redColor] colorWithAlphaComponent:0.5f]];
self.fillStyle = fillStyle; DrawingStyle *strokeStyle = [DrawingStyle new];
strokeStyle.strokeColor = [DrawingColor colorWithUIColor:[UIColor redColor]];
strokeStyle.lineWidth = 0.5f;
self.strokeStyle = strokeStyle;
} return self;
} - (void)drawRect:(CGRect)rect { NSParameterAssert(self.fillStyle);
NSParameterAssert(self.strokeStyle); [super drawRect:rect]; CGFloat width = self.frame.size.width;
CGFloat height = self.frame.size.height; if (self.type & kFillWave) { [self.drawRectObject useDrawingStyle:_fillStyle drawFillBlock:^(DrawRectObject *drawRectObject) { for (CGFloat x = 0; x <= width; x++) { if (x == 0) { [drawRectObject moveToStartPoint:CGPointMake(x, _waveCrest * sin((2 * M_PI) * _waveCount / width * x + _phase) + height / 2.f)];
continue; } else { [drawRectObject addLineToPoint:CGPointMake(x, _waveCrest * sin((2 * M_PI) * _waveCount / width * x + _phase) + height / 2.f)];
}
} [drawRectObject addLineToPoint:CGPointMake(width, height)];
[drawRectObject addLineToPoint:CGPointMake(0, height)];
[drawRectObject addLineToPoint:CGPointMake(0, _waveCrest * sin((2 * M_PI) * _waveCount / width * 0 + _phase) + height / 2.f)];
}];
} if (self.type & kStrokeWave) { [self.drawRectObject useDrawingStyle:_strokeStyle drawStrokeBlock:^(DrawRectObject *drawRectObject) { for (CGFloat x = 0; x <= width; x++) { if (x == 0) { [drawRectObject moveToStartPoint:CGPointMake(x, _waveCrest * sin((2 * M_PI) * _waveCount / width * x + _phase) + height / 2.f)];
continue; } else { [drawRectObject addLineToPoint:CGPointMake(x, _waveCrest * sin((2 * M_PI) * _waveCount / width * x + _phase) + height / 2.f)];
}
}
}];
}
} @end
//
// ViewController.m
// DrawRectObject
//
// Created by YouXianMing on 16/7/30.
// Copyright © 2016年 YouXianMing. All rights reserved.
// #import "ViewController.h"
#import "WaveView.h"
#import "ReplicatorLineAnimationView.h"
#import "UIView+SetRect.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Wave 1
{
WaveView *waveView = [[WaveView alloc] initWithFrame:CGRectMake(0, 0, Width, Height)];
waveView.phase = 0.f;
waveView.waveCrest = 5.f;
waveView.waveCount = 1;
waveView.type = kStrokeWave | kFillWave; {
DrawingStyle *fillStyle = [DrawingStyle new];
fillStyle.fillColor = [DrawingColor colorWithUIColor:[[UIColor redColor] colorWithAlphaComponent:0.25f]];
waveView.fillStyle = fillStyle; DrawingStyle *strokeStyle = [DrawingStyle new];
strokeStyle.strokeColor = [DrawingColor colorWithUIColor:[[UIColor redColor] colorWithAlphaComponent:0.5f]];
strokeStyle.lineWidth = 0.5f;
waveView.strokeStyle = strokeStyle;
} ReplicatorLineAnimationView *replicatorLineView = [[ReplicatorLineAnimationView alloc] initWithFrame:waveView.bounds];
replicatorLineView.direction = kReplicatorLeft;
replicatorLineView.speed = 0.1f;
replicatorLineView.contentView = waveView;
[replicatorLineView startAnimation];
[self.view addSubview:replicatorLineView];
} // Wave 2
{
WaveView *waveView = [[WaveView alloc] initWithFrame:CGRectMake(0, 0, Width, Height)];
waveView.phase = 0.f;
waveView.waveCrest = 10.f;
waveView.waveCount = 1;
waveView.type = kStrokeWave | kFillWave; {
DrawingStyle *fillStyle = [DrawingStyle new];
fillStyle.fillColor = [DrawingColor colorWithUIColor:[[UIColor redColor] colorWithAlphaComponent:0.5f]];
waveView.fillStyle = fillStyle; DrawingStyle *strokeStyle = [DrawingStyle new];
strokeStyle.strokeColor = [DrawingColor colorWithUIColor:[UIColor redColor]];
strokeStyle.lineWidth = 0.5f;
waveView.strokeStyle = strokeStyle;
} ReplicatorLineAnimationView *replicatorLineView = [[ReplicatorLineAnimationView alloc] initWithFrame:waveView.bounds];
replicatorLineView.direction = kReplicatorLeft;
replicatorLineView.speed = 0.3f;
replicatorLineView.contentView = waveView;
[replicatorLineView startAnimation];
[self.view addSubview:replicatorLineView];
} // Wave 3
{
WaveView *waveView = [[WaveView alloc] initWithFrame:CGRectMake(0, 0, Width, Height)];
waveView.phase = 10.f;
waveView.waveCrest = 15.f;
waveView.waveCount = 1;
waveView.type = kFillWave; {
DrawingStyle *fillStyle = [DrawingStyle new];
fillStyle.fillColor = [DrawingColor colorWithUIColor:[UIColor redColor]];
waveView.fillStyle = fillStyle;
} ReplicatorLineAnimationView *replicatorLineView = [[ReplicatorLineAnimationView alloc] initWithFrame:waveView.bounds];
replicatorLineView.direction = kReplicatorLeft;
replicatorLineView.speed = 0.5f;
replicatorLineView.contentView = waveView;
[replicatorLineView startAnimation];
[self.view addSubview:replicatorLineView];
}
} @end