Objective c 未从类的正确实例调用MouseDown事件

我有一个名为PointsView的自定义类，它是SCNView的一个子类

@interface PointsView : SCNView <SCNSceneRendererDelegate>

这将使用SCNView和SCNScene初始化pointsView，两者都是在ViewController中创建的，并链接到我的故事板。SCNView和SCNScene的属性在PointsView类中设置

@implementation PointsView

- (id)initView:(SCNView *)ptsView withScene:(SCNScene *)curScene {
    self = [super init];

    mySCNView = ptsView;
    currentScene = curScene;

    mySCNView.delegate = self;

    mySCNView.scene = currentScene;
    mySCNView.allowsCameraControl = NO;
    mySCNView.jitteringEnabled = YES;
    mySCNView.showsStatistics = NO;
    mySCNView.backgroundColor = [NSColor blackColor];

    cameraNode = [SCNNode node];
    cameraNode.camera = [SCNCamera camera];
    cameraNode.position = SCNVector3Make(0, 0.4, 6);
    cameraNode.transform = CATransform3DRotate(cameraNode.transform, -M_PI/7.0, 0, 0, 0);
    cameraNode.orientation = SCNVector4Make(1, 0, 0, 0);
    cameraNode.camera.yFov = 40.0;
    cameraNode.camera.xFov = 0;
    cameraNode.camera.zNear = 0.5;

    [currentScene.rootNode addChildNode:cameraNode];

    SCNLight *spotLight = [SCNLight light];
    spotLight.type = SCNLightTypeSpot;
    spotLight.color = [NSColor blackColor];
    SCNNode *spotLightNode = [SCNNode node];
    spotLightNode.light = spotLight;
    spotLightNode.position = SCNVector3Make(-2, 1, 0);

    [cameraNode addChildNode:spotLightNode];

    return self;
}

我在PointsView类中有一个rightMouseDown事件，问题是当调用该方法时，它是从PointsView的实例调用的，该实例与在ViewController中初始化的实例不同，例如；初始化后内存中的位置为0x100b032a0，调用rightMouseDown时，内存中的位置为0x100908630。这告诉我这不是同一个例子

- (void)rightMouseDown:(NSEvent *)theEvent {
    SCNHitTestResult *result = [self hitTestResultForEvent:theEvent];
}

我不知道为什么rightMouseDown事件使用另一个实例。我需要使用在ViewController中初始化的那个。我做错什么了吗？还是我错过了什么？非常感谢您的帮助

如果有人需要更多信息，请询问

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谢谢。

我设法解决了这个问题。我使用了NSEvent中的firstResponder属性，该属性已设置为ViewController。从那里我可以访问我已经初始化的PointsView类

@implementation PointsView

- (id)initView:(SCNView *)ptsView withScene:(SCNScene *)curScene {
    self = [super init];

    mySCNView = ptsView;
    currentScene = curScene;

    mySCNView.delegate = self;

    mySCNView.scene = currentScene;
    mySCNView.allowsCameraControl = NO;
    mySCNView.jitteringEnabled = YES;
    mySCNView.showsStatistics = NO;
    mySCNView.backgroundColor = [NSColor blackColor];

    cameraNode = [SCNNode node];
    cameraNode.camera = [SCNCamera camera];
    cameraNode.position = SCNVector3Make(0, 0.4, 6);
    cameraNode.transform = CATransform3DRotate(cameraNode.transform, -M_PI/7.0, 0, 0, 0);
    cameraNode.orientation = SCNVector4Make(1, 0, 0, 0);
    cameraNode.camera.yFov = 40.0;
    cameraNode.camera.xFov = 0;
    cameraNode.camera.zNear = 0.5;

    [currentScene.rootNode addChildNode:cameraNode];

    SCNLight *spotLight = [SCNLight light];
    spotLight.type = SCNLightTypeSpot;
    spotLight.color = [NSColor blackColor];
    SCNNode *spotLightNode = [SCNNode node];
    spotLightNode.light = spotLight;
    spotLightNode.position = SCNVector3Make(-2, 1, 0);

    [cameraNode addChildNode:spotLightNode];

    return self;
}