SpriteKit 缺少线性变换矩阵 [英] SpriteKit missing linear transformation matrices

问题描述

有谁知道如何使用转换矩阵转换(旋转、缩放、倾斜)SpriteKit 节点.在 Spritekit API 中找不到对此的任何支持.

Does anyone know how to transform (rotate,scale,skew) SpriteKit nodes using transformation matrices. couldn't find any support for this in the Spritekit API.

推荐答案

正如 Fogmeister 所述，您可以使用带有 CIFilter 的 SKEffectNode.以下适用于 iOS:

As mentioned by Fogmeister, you can use an SKEffectNode with a CIFilter. The following works on iOS:

// Label
let label = SKLabelNode(text: "Hello world")
// Transform
let transform = CGAffineTransformMake(1, 0.5, 0, 1, 0, 0)
// CIFilter
let transformFilter = CIFilter(name: "CIAffineTransform")!
let val = NSValue(CGAffineTransform: transform)
transformFilter.setValue(val, forKey: "inputTransform")
// Effect node
let transformNode = SKEffectNode()
transformNode.filter = transformFilter
// Add label as child on effect node
transformNode.addChild(label)
scene.addChild(transformNode)

在 Apple 的 文档.

See more on affine transform in Apple's documentation.

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