75 lines
3.0 KiB
Objective-C
Executable File
75 lines
3.0 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorBallRotateAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by Nguyen Vinh on 7/20/15.
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// Copyright (c) 2015 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorBallRotateAnimation.h"
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@implementation DGActivityIndicatorBallRotateAnimation
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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CGFloat duration = 1.0f;
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CGFloat circleSize = size.width / 5;
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CAMediaTimingFunction *timingFunction = [CAMediaTimingFunction functionWithControlPoints:0.7f :-0.13f :0.22f :0.86f];
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// Scale animation
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CAKeyframeAnimation *scaleAnimation = [self createKeyframeAnimationWithKeyPath:@"transform.scale"];
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scaleAnimation.keyTimes = @[@0.0f, @0.5f, @1.0f];
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scaleAnimation.values = @[[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0f, 1.0f, 1.0f)],
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[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.6f, 0.6f, 1.0f)],
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[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0f, 1.0f, 1.0f)]];
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scaleAnimation.duration = duration;
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scaleAnimation.timingFunctions = @[timingFunction, timingFunction];
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// Rotate animation
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CAKeyframeAnimation *rotateAnimation = [self createKeyframeAnimationWithKeyPath:@"transform.rotation.z"];
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rotateAnimation.keyTimes = @[@0.0f, @0.5f, @1.0f];
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rotateAnimation.values = @[@0, @-M_PI, @(-2 * M_PI)];
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rotateAnimation.duration = duration;
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rotateAnimation.timingFunctions = @[timingFunction, timingFunction];
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// Animation
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CAAnimationGroup *animation = [self createAnimationGroup];;
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animation.animations = @[scaleAnimation, rotateAnimation];
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animation.duration = duration;
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animation.repeatCount = HUGE_VALF;
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// Draw circles
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CALayer *leftCircle = [CALayer layer];
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leftCircle.backgroundColor = tintColor.CGColor;
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leftCircle.opacity = 0.8f;
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leftCircle.cornerRadius = circleSize / 2;
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leftCircle.frame = CGRectMake(0, (size.height - circleSize) / 2, circleSize, circleSize);
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CALayer *rightCircle = [CALayer layer];
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rightCircle.backgroundColor = tintColor.CGColor;
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rightCircle.opacity = 0.8f;
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rightCircle.cornerRadius = circleSize / 2;
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rightCircle.frame = CGRectMake(size.width - circleSize, (size.height - circleSize) / 2, circleSize, circleSize);
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CALayer *centerCircle = [CALayer layer];
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centerCircle.backgroundColor = tintColor.CGColor;
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centerCircle.cornerRadius = circleSize / 2;
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centerCircle.frame = CGRectMake((size.width - circleSize) / 2, (size.height - circleSize) / 2, circleSize, circleSize);
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CALayer *circle = [CALayer layer];
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circle.frame = CGRectMake((layer.bounds.size.width - size.width) / 2, (layer.bounds.size.height - size.height) / 2, size.width, size.height);
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[circle addSublayer:leftCircle];
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[circle addSublayer:rightCircle];
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[circle addSublayer:centerCircle];
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[circle addAnimation:animation forKey:@"animation"];
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[layer addSublayer:circle];
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}
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@end
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