Telerik Animation ViewController.m File

TelerikAnimations

//
//  ViewController.m
//  TelerikAnimations
//
//  Created by Michael Crump on 3/25/14.
//  Copyright (c) 2014 Michael Crump. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController {
    
    UIDynamicAnimator *_animator;
    NSMutableArray *_points;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [NSTimer scheduledTimerWithTimeInterval:5.0
                                     target:self
                                   selector:@selector(theAction)
                                   userInfo:nil
                                    repeats:NO];
    
    _points = [[NSMutableArray alloc] init];
    for (int i=0; i<10; i++) {
        [_points addObject:[[TKChartDataPoint alloc] initWithX:@(i) Y:@(arc4random()%300)]];
    }
    
    TKChartLineSeries *lineSeries = [[TKChartLineSeries alloc] initWithItems:_points];
    lineSeries.selectionMode = TKChartSeriesSelectionModeDataPoint;
    lineSeries.style.pointShape = [[TKPredefinedShape alloc] initWithType:TKShapeTypeCircle andSize:CGSizeMake(15, 15)];
    lineSeries.style.shapeMode = TKChartSeriesStyleShapeModeAlwaysShow;
    [_chartView addSeries: lineSeries];

    _chartView.yAxis.style.labelStyle.textHidden = YES;
    _chartView.allowAnimations = YES;
    
    [_chartView reloadData];

}

-(void) theAction {
    [self applyGravityEffectAfterTimer];
}

- (void)applyGravityEffectAfterTimer
{
    _animator = [[UIDynamicAnimator alloc] initWithReferenceView:_chartView.plotView];
    
    NSArray *points = [_chartView visualPointsForSeries:_chartView.series[0]];
    
    UICollisionBehavior *collision = [[UICollisionBehavior alloc] initWithItems:points];
    collision.translatesReferenceBoundsIntoBoundary = YES;
    
    UIGravityBehavior *gravity = [[UIGravityBehavior alloc] initWithItems:points];
    gravity.gravityDirection = CGVectorMake(0.f, 2.f);
    
    UIDynamicItemBehavior *dynamic = [[UIDynamicItemBehavior alloc] initWithItems:points];
    dynamic.elasticity = 0.5f;
    
    [_animator addBehavior:dynamic];
    [_animator addBehavior:gravity];
    [_animator addBehavior:collision];
}


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end