UIBezierPath 的 close() 函数不适用于 SKShapeNode

Question

close() 函数应该在子路径的第一个点和最后一个点之间创建一条线段。它在操场上工作但不起作用当我使用 UIBezierPath 创建 SKShapeNode 并将其用于 ARSKView 时。有什么解决办法吗？

func view(_ view: ARSKView, nodeFor anchor: ARAnchor) -> SKNode? {
    let bezierPath = UIBezierPath()
    bezierPath.move(to: CGPoint(x: 40, y: 0))
    let shapeHeight: CGFloat = 40
    bezierPath.addQuadCurve(to: CGPoint(x: 40.0, y: shapeHeight), controlPoint: CGPoint(x: 100.0, y: shapeHeight/2.0))
    bezierPath.close()

    let shape = SKShapeNode(path: bezierPath.cgPath, centered: true)
    shape.isAntialiased = false
    shape.strokeColor = .white
    shape.fillColor = .clear
    shape.lineWidth = 2.0
    return shape
}

Answer 1

我不知道为什么会这样，但是很容易修复：

    bezierPath.move(to: CGPoint(x: 40, y: 0))

    bezierPath.addLine(to:  CGPoint(x: 40.0001, y: 0)) //Add this line

    let shapeHeight: CGFloat = 40
    bezierPath.addQuadCurve(to: CGPoint(x: 40.0, y: shapeHeight), controlPoint: CGPoint(x: 100.0, y: shapeHeight/2.0))
    bezierPath.close()

UIBezierPath 的 close() 函数不适用于 SKShapeNode

UIBezierPath's close() function doesn't work for SKShapeNode

ios

sprite-kit

skshapenode

arkit