55 lines
2.5 KiB
Objective-C
Executable File
55 lines
2.5 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorTripleRingsPulseAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by tripleCC on 15/6/28.
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// Copyright (c) 2015年 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorTripleRingsAnimation.h"
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@implementation DGActivityIndicatorTripleRingsAnimation
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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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UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0.0f, 0.0f, size.width, size.width)];
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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.height) / 2.0f;
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for (int i = 0; i < 3; i++) {
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CAShapeLayer *circle = [CAShapeLayer layer];
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circle.path = path.CGPath;
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circle.fillColor = [UIColor clearColor].CGColor;
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circle.strokeColor = tintColor.CGColor;
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circle.frame = CGRectMake(oX, oY, size.width, size.height);
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circle.anchorPoint = CGPointMake(0.5f, 0.5f);
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circle.opacity = 1.0f;
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circle.transform = CATransform3DMakeScale(0.0f, 0.0f, 0.0f);
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CABasicAnimation *transformAnimation = [self createBasicAnimationWithKeyPath:@"transform"];
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transformAnimation.duration = 2.0f - i * 0.4f;
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transformAnimation.fromValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.1f, 0.1f, 0.0f)];
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transformAnimation.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0f, 1.0f, 0.0f)];
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transformAnimation.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseOut];
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CABasicAnimation *opacityAnimation = [self createBasicAnimationWithKeyPath:@"opacity"];
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opacityAnimation.duration = transformAnimation.duration;
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opacityAnimation.fromValue = @(1.0f);
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opacityAnimation.toValue = @(0.8f);
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opacityAnimation.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseOut];
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CAAnimationGroup *animationGroup = [self createAnimationGroup];;
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animationGroup.beginTime = beginTime + i * 0.4f;
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animationGroup.repeatCount = HUGE_VALF;
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animationGroup.duration = 2.0f;
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animationGroup.animations = @[transformAnimation, opacityAnimation];
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[layer addSublayer:circle];
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[circle addAnimation:animationGroup forKey:@"animation"];
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}
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}
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@end
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