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在一个平面上放置一个SCNNode并检测该节点是否被点击

sceneview scnnode arkit swift ios

0

diegomen · 技术社区 · 7 年前

    @objc func tapped(sender: UITapGestureRecognizer) {
        let sceneView = sender.view as! ARSCNView
        let tapLocation = sender.location(in: sceneView)
        let hitTest = sceneView.hitTest(tapLocation, types: .existingPlaneUsingExtent)
        if !hitTest.isEmpty {
            addItem(hitTestResult: hitTest.first!)
            hideTip()
    }
}

它是在点击平面时添加节点的,但是现在我想检测节点何时被点击,我使用了以下代码:

    let sceneView = sender.view as! ARSCNView
    let tapLocation = sender.location(in: sceneView)
    let hitTouchTest = sceneView.hitTest(tapLocation)
    if !hitTouchTest.isEmpty {
        let results = hitTouchTest.first!
        let node = results.node
    }

它输入if,但节点的名称总是nil,当我创建节点并将其添加到平面时,我给它一个名称。。。如何检测节点已被点击?

1 回复 | 直到 7 年前

1

4

Yevhen Ibrahim 7 年前

此解决方案的问题是,需要获取已接触的节点数组的第一个值。我建议阅读下一个主题: https://developer.apple.com/documentation/scenekit/scnhittestoption

func registerGestureRecognizer() {
    let tap = UITapGestureRecognizer(target: self, action: #selector(search))
    self.sceneView.addGestureRecognizer(tap)
}

@objc func search(sender: UITapGestureRecognizer) {
    let sceneView = sender.view as! ARSCNView
    let location = sender.location(in: sceneView)
    let results = sceneView.hitTest(location, options: [SCNHitTestOption.searchMode : 1])

    guard sender.state == .began else { return }
        for result in results.filter( { $0.node.name != nil }) {
            if result.node.name == "Your node name" {
                // do manipulations
            }
        }
}

另外,这种方法可以帮助您通过其名称获取特定节点。