文本换行对"SCNText“节点不起作用

Question

我可以在AR环境中显示SCNText，但当我试图将文本包装在固定宽度和高度的容器中时，却在多行中显示它，它得到了重叠。

let text = SCNText(string: ktext, extrusionDepth: 0.0)
text.name = "text"
text.firstMaterial?.diffuse.contents = color
text.font = UIFont(name: fontName, size: size)
text.truncationMode = kCAAlignmentCenter
text.isWrapped = true
text.truncationMode = kCATruncationMiddle
text.containerFrame.size = CGSize(width: 3, height: 1)

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Answer 1

如果在SCNText对象上使用“正常”字体大小和包含框架，然后在包含它的节点上设置比例，则所有内容都会按预期换行。类似于：

let extrudedText = SCNText(string: definition.text, extrusionDepth: 0.1)
extrudedText.font = UIFont(name: definition.fontname, size: 0.2)!
...
extrudedText.font = UIFont(name: definition.fontname, size: 20)! 
extrudedText.containerFrame = CGRect(origin: .zero, size: CGSize(width: 100.0, height: 500.0))
...
scale = SCNVector3Make(0.01, 0.01, 0.01)