ARKit Demo

来源：https://www.jianshu.com/p/396a0d1c16f9

创建项目时，选择Augmented Reality App

屏幕快照 2018-05-15 下午3.03.48.png

Content Technology 选项选择 SceneKit

屏幕快照 2018-05-15 下午3.07.17.png

ViewController里有一个自带的飞机模型，替换原有的代码：

#import "ViewController.h"

@interface ViewController () <ARSCNViewDelegate>

@property (nonatomic, strong) IBOutlet ARSCNView *sceneView;

@end

    
@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.sceneView.delegate = self;
    
    // Show statistics such as fps and timing information
    self.sceneView.showsStatistics = YES;
    
    //存放所有3D几何体的容器
    SCNScene *scene = [[SCNScene alloc]init];
    //想要绘制的3D立方体
    SCNBox *boxGeometry = [SCNBox boxWithWidth:0.1 height:0.1 length:0.1 chamferRadius:0.0];
    //将几何体包装为node以便添加到scene
    SCNNode *boxNode = [SCNNode nodeWithGeometry:boxGeometry];
    //把box放在摄像头正前方
    boxNode.position = SCNVector3Make(0, 0, -0.5);
    //rootNode是一个特殊的node，它是所有node的起点
    [scene.rootNode addChildNode:boxNode];
    //将scene赋给view
    self.sceneView.scene = scene;
    //默认光照
    self.sceneView.autoenablesDefaultLighting = YES;
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    // Create a session configuration
    ARWorldTrackingConfiguration *configuration = [ARWorldTrackingConfiguration new];

    // Run the view's session
    [self.sceneView.session runWithConfiguration:configuration];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    
    // Pause the view's session
    [self.sceneView.session pause];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - ARSCNViewDelegate

/*
// Override to create and configure nodes for anchors added to the view's session.
- (SCNNode *)renderer:(id<SCNSceneRenderer>)renderer nodeForAnchor:(ARAnchor *)anchor {
    SCNNode *node = [SCNNode new];
 
    // Add geometry to the node...
 
    return node;
}
*/

- (void)session:(ARSession *)session didFailWithError:(NSError *)error {
    // Present an error message to the user
    
}

- (void)sessionWasInterrupted:(ARSession *)session {
    // Inform the user that the session has been interrupted, for example, by presenting an overlay
    
}

- (void)sessionInterruptionEnded:(ARSession *)session {
    // Reset tracking and/or remove existing anchors if consistent tracking is required
    
}

@end

WechatIMG15.png