53 lines
2.1 KiB
Objective-C
Executable File
53 lines
2.1 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorBallClipRotateAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by Nguyen Vinh on 7/19/15.
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// Copyright (c) 2015 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorBallClipRotateAnimation.h"
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@implementation DGActivityIndicatorBallClipRotateAnimation
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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CGFloat duration = 0.75f;
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// Scale animation
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CAKeyframeAnimation *scaleAnimation = [self createKeyframeAnimationWithKeyPath:@"transform.scale"];
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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.keyTimes = @[@0.0f, @0.5f, @1.0f];
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// Rotate animation
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CAKeyframeAnimation *rotateAnimation = [self createKeyframeAnimationWithKeyPath:@"transform.rotation.z"];
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rotateAnimation.values = @[@0, @M_PI, @(2 * M_PI)];
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rotateAnimation.keyTimes = scaleAnimation.keyTimes;
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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.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
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animation.duration = duration;
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animation.repeatCount = HUGE_VALF;
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// Draw ball clip
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CAShapeLayer *circle = [CAShapeLayer layer];
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UIBezierPath *circlePath = [UIBezierPath bezierPathWithArcCenter:CGPointMake(size.width / 2, size.height / 2) radius:size.width / 2 startAngle:1.5 * M_PI endAngle:M_PI clockwise:true];
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circle.path = circlePath.CGPath;
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circle.lineWidth = 2;
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circle.fillColor = nil;
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circle.strokeColor = tintColor.CGColor;
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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 addAnimation:animation forKey:@"animation"];
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[layer addSublayer:circle];
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}
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@end
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