swift arkit texture face get position on screen
func transformToTextureCoordinates(screenCoordinates: CGPoint) -> CGPoint {
let hitTestResults = sceneView.hitTest(screenCoordinates, options: nil)
guard let result = hitTestResults.first else {
return CGPoint(x: -1, y: -1)
}
let textureCoordinates = result.textureCoordinates(withMappingChannel: 0)
return CGPoint(x: textureCoordinates.x * textureImage.size.width, y: textureCoordinates.y * textureImage.size.height)
}
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