#import"ViewController.h"

#import <SceneKit/SceneKit.h>

@interface ViewController ()

@end

@implementation ViewController

- (void) viewDidLoad
{
    [super viewDidLoad];

    NSAttributedString* str = [ViewController makeSomeText];

    [self addSceneViewWithText: str];
    [self addLabelWithText: str];
}

+ (NSMutableAttributedString*) makeSomeText
{
    NSDictionary* redAttr   = @{NSForegroundColorAttributeName : [UIColor redColor]};
    NSDictionary* greenAttr = @{NSForegroundColorAttributeName : [UIColor greenColor]};
    NSDictionary* blueAttr  = @{NSForegroundColorAttributeName : [UIColor blueColor]};

    NSAttributedString* redStr   = [[NSAttributedString alloc] initWithString: @"red"   attributes: redAttr];
    NSAttributedString* greenStr = [[NSAttributedString alloc] initWithString: @"green" attributes: greenAttr];
    NSAttributedString* blueStr  = [[NSAttributedString alloc] initWithString: @"blue"  attributes: blueAttr];

    NSMutableAttributedString* str = [[NSMutableAttributedString alloc] init];
    [str appendAttributedString: redStr];
    [str appendAttributedString: greenStr];
    [str appendAttributedString: blueStr];

    return str;
}

- (void) addSceneViewWithText: (NSAttributedString*) string
{
    SCNView* view = [[SCNView alloc] initWithFrame: self.view.bounds];
    view.scene = [SCNScene scene];
    view.backgroundColor = [UIColor grayColor];
    view.autoenablesDefaultLighting = true;
    view.allowsCameraControl = true;
    SCNNode* root = view.scene.rootNode;
    [self.view addSubview: view];

    SCNNode* cameraNode = [SCNNode node];
    cameraNode.camera = [SCNCamera camera];
    cameraNode.camera.automaticallyAdjustsZRange = true;
    [root addChildNode: cameraNode];

    SCNText* text = [SCNText textWithString: string extrusionDepth: 3];
    // text.firstMaterial.diffuse.contents = [UIColor yellowColor];
    SCNNode* textNode = [SCNNode nodeWithGeometry: text];
    textNode.rotation = SCNVector4Make (1, 0, 0, 0.5f);
    [root addChildNode: textNode];

    SCNVector3 text_center;
    float dummy;
    [text getBoundingSphereCenter: &text_center radius: &dummy];
    textNode.position = SCNVector3Make (-text_center.x, -text_center.y, -150);
}

- (void) addLabelWithText: (NSAttributedString*) string
{
    CGRect bounds = self.view.bounds;
    UILabel* label = [[UILabel alloc] initWithFrame: CGRectMake (0, 50, bounds.size.width, 50)];
    label.attributedText = string;
    label.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview: label];
}

- (void) didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

@end