- (id)init {
     if (self = [super init]) {
        self.user = [User newUserWithTempData];
     }
     return self;
 }

- (void)viewDidLoad
{
     [super viewDidLoad];
     self.userNameLabel.text = self.user.nameString;
}

#import "CircleView.h"

@implementation CircleView

- (void)drawRect:(CGRect)rect{
    // CUSTOM DRAWING METHOD HERE
}

@end

#import <UIKit/UIKit.h>
@class CircleView;
@interface CreateNewQuestionCell : UITableViewCell
     @property (nonatomic, weak) IBOutlet CircleView *circleView;
@end

// MyUIViewController.h

#import <UIKit/UIKit.h>
#import "BezierGraphView.h"

@interface MyUIViewController : UIViewController

@property (nonatomic, strong) IBOutlet BezierGraphView *graphView;
@property (strong) IBOutlet UISlider *xSlider;
@property (strong) IBOutlet UISlider *ySlider;
@property (strong) IBOutlet UISlider *zSlider;

-(IBAction)sliderValueDidChange;

@end

//BezierGraphView.h

#import <UIKit/UIKit.h>

@interface BezierGraphView : UIView

-(void)valuesDidChangeWithX:(CGFloat)xValue Y:(CGFloat)yValue Z:(CGFloat)zValue;

@end


//BezierGraphView.m
#import "BezierGraphView.h"

@implementation BezierGraphView


-(void)valuesDidChangeWithX:(CGFloat)xValue Y:(CGFloat)yValue Z:(CGFloat)zValue{
    //drawRect code goes here
}


@end

//MyUIViewController.m

@implementation MyUIViewController

//Other UIViewController stuff, like viewDidLoad

-(IBAction)sliderValueDidChange{

    [self.graphView valuesDidChangeWithX:self.xSlider.value
                                       Y:self.ySlider.value
                                       Z:self.zSlider.value]
}

@end