argyle pattern

ViewController.m

//
//  ViewController.m
//  ArgylePattern
//
//  Created by Yusuke Mizushima on 2016/12/04.
//  Copyright © 2016 Yusuke Mizushima. All rights reserved.
//

#import "ViewController.h"
@import SpriteKit;

@interface ViewController ()
@property (nonatomic, weak) SKScene *scene;
@end


#define UIColorHex(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setupScene];
    [self createArgylePattern];
}

- (void)setupScene {
    SKView *sv = [[SKView alloc] initWithFrame:self.view.bounds];
    SKScene *s = [SKScene sceneWithSize:sv.frame.size];
    [sv presentScene:s];
    [self.view addSubview:sv];
    self.scene = s;
    
}

- (void)createArgylePattern {
    float l = 50;
    
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:CGRectMake(-l/2.0, -l/2.0, l, l)];
    [path applyTransform:CGAffineTransformMakeRotation(M_PI * 0.25)];
    [path applyTransform:CGAffineTransformMakeScale(1, 1.6)];
    
    for (int i=0; i<20; i++) {
        for (int j=0; j<20; j++) {
            float x = i * sqrtf(2) * l - ((j%2==0) ? sqrtf(2) * l * 0.5 : 0);
            float y = j * sqrtf(2) * l * 0.8;
            UIColor *color = ((j % 2) == 0) ? UIColorHex(0xD3C9BF)
            : ((i + j / 2) % 2) == 0 ? UIColorHex(0xC84D49) : UIColorHex(0x282827);
            SKShapeNode *dia = [SKShapeNode shapeNodeWithPath:path.CGPath];
            dia.lineWidth = 0;
            dia.fillColor = color;
            dia.position = CGPointMake(x, y);
            [self.scene addChild:dia];
        }
    }
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    float l = 50;
    
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:CGRectMake(-l/2.0, -l/2.0, l, l)];
    [path applyTransform:CGAffineTransformMakeRotation(M_PI * 0.25)];
    [path applyTransform:CGAffineTransformMakeScale(1, 1.6)];
    CGFloat pattern[] = {8,4};
    path = [UIBezierPath bezierPathWithCGPath:CGPathCreateCopyByDashingPath(path.CGPath, nil, 0, pattern, 2)];
    
    for (int i=0; i<20; i++) {
        for (int j=0; j<20; j++) {
            float x = i * sqrtf(2) * l - ((j%2==1) ? sqrtf(2) * l * 0.5 : 0);
            float y = j * sqrtf(2) * l * 0.8;
            UIColor *color = UIColorHex(0xA8A19D);
            SKShapeNode *dia = [SKShapeNode shapeNodeWithPath:path.CGPath];
            dia.lineWidth = 2;
            dia.strokeColor = color;
            dia.position = CGPointMake(x, y);
            [self.scene addChild:dia];
        }
    }
}



@end

http://lepetit-prince.net/ios/?p=5762