62 lines
2.9 KiB
Objective-C
Executable File
62 lines
2.9 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorRotatingTrigonsAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by tripleCC on 15/6/26.
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// Copyright (c) 2015年 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorRotatingSandglassAnimation.h"
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@implementation DGActivityIndicatorRotatingSandglassAnimation
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#pragma mark -
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#pragma mark DGActivityIndicatorAnimation Protocol
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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NSTimeInterval beginTime = CACurrentMediaTime();
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CGFloat circleSize = size.width / 4.0f;;
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CGFloat oX = (layer.bounds.size.width - size.width) / 2.0f;
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CGFloat oY = (layer.bounds.size.height - size.width) / 2.0f;
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for (int i = 0; i < 2; i++) {
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CALayer *circle = [CALayer layer];
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circle.frame = CGRectMake(oX + i * (size.width - 2.0f * circleSize), (size.height - circleSize) * i + oY, circleSize, circleSize);
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circle.cornerRadius = circle.bounds.size.height / 2.0f;
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circle.anchorPoint = CGPointMake(0.5f, 0.5f);
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circle.transform = CATransform3DMakeScale(0.0f, 0.0f, 0.0f);
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circle.backgroundColor = tintColor.CGColor;
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circle.shouldRasterize = YES;
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circle.rasterizationScale = [[UIScreen mainScreen] scale];
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CAKeyframeAnimation *transformAnimation = [self createKeyframeAnimationWithKeyPath:@"transform"];
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transformAnimation.repeatCount = HUGE_VALF;
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transformAnimation.duration = 0.8f;
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transformAnimation.beginTime = beginTime;
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transformAnimation.keyTimes = @[@(0.0f), @(1.0f / 3.0f), @(2.0f / 3.0f), @(1.0)];
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transformAnimation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
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[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
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[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
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[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];
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CATransform3D t1 = CATransform3DMakeTranslation((1.0f - 2.0f * i) * (size.width - 2.0f * circleSize), 0.0f, 0.0f);
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CATransform3D t2 = CATransform3DMakeTranslation((1.0f - 2.0f * i) * (size.width - 2.0f * circleSize) / 2.0f, (1.0f - 2.0f * i) * (size.height - circleSize) / 2.0f, 0.0f);
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CATransform3D t3 = CATransform3DMakeTranslation(0.0f, 0.0f, 0.0f);
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transformAnimation.values = @[[NSValue valueWithCATransform3D:CATransform3DIdentity],
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[NSValue valueWithCATransform3D:t1],
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[NSValue valueWithCATransform3D:t2],
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[NSValue valueWithCATransform3D:t3]];
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[layer addSublayer:circle];
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[circle addAnimation:transformAnimation forKey:@"animation"];
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}
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}
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@end
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