ios – Swift Scenekit – 居中SCNText – getBoundingBoxMin：Max问题

享受SCNText上的alignmentMode选项.谷歌搜索周围看起来像alignmentMode和containerFrame有问题.我发现的替代方案建议使用获取边界框功能来查找文本大小,然后相应地手动调整.很棒,除了我不能让功能工作.当我试图得到两个向量时,我得到一个错误：

‘SCNVector3’无法转换为’UnsafeMutablePointer< SCNVector3>” 我在几何和节点上得到了它.代码示例如下

func setCounterValue(counterValue:Int) {

    var v1 = SCNVector3(x: 0,y: 0,z: 0)
    var v2 = SCNVector3(x: 0,z: 0)


    _counterValue = counterValue

    let newText = SCNText(string: String(format: "%06d",counterValue),extrusionDepth:sDepth)
    newText.font = UIFont (name: "Arial",size: 3)
    newText.firstMaterial!.diffuse.contents = UIColor.whiteColor()
    newText.firstMaterial!.specular.contents = UIColor.whiteColor()

    newText.getBoundingBoxMin(v1,max: v2)

    _textNode = SCNNode(geometry: newText)
    _textNode.getBoundingBoxMin(v1,max: v2)

}

任何建议都非常感谢.

func setCounterValue(counterValue:Int) {

    var v1 = SCNVector3(x: 0,z: 0)

    _textNode.removeFromParentNode()
    _counterValue = counterValue

    let newText = SCNText(string: String(format: "%08d",size: 3)
    newText.firstMaterial!.diffuse.contents = UIColor.whiteColor()
    newText.firstMaterial!.specular.contents = UIColor.whiteColor()

    _textNode = SCNNode(geometry: newText)
    _textNode.getBoundingBoxMin(&v1,max: &v2)

    let dx:Float = Float(v1.x - v2.x)/2.0
    let dy:Float = Float(v1.y - v2.y)
    _textNode.position = SCNVector3Make(dx,dy,Float(sDepth/2))

    node.addChildNode(_textNode)

}