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How to render a UIView with transparent background on an SCNPlane in ARKit?

My UIView has a UIColor.clear background. I am instantiating the View Controller from a storyboard.

When I set SCNPlane geometry's diffuse contents to the viewcontroller's view, the Transparent background appears solid white on the plane. here is how I set it

let material = SCNMaterial()
material.diffuse.contents = viewController.view
planeGeometry.materials = [material]

I can see the view, just the background is not transparent.

I saw suggestion on other Stack overflow posts where they suggested to try this

material.diffuse.contents = viewController.view.layer

This works and the the plane renders the transparencies, but then the view is not interactive anymore.

Is there a way that I can retain the interactivity and the transparency when the view is rendered on the plane?

like image 808
Sarang Borude Avatar asked May 22 '19 20:05

Sarang Borude


1 Answers

Try setting your view's isOpaque property to false:

let material = SCNMaterial()
viewController.view.isOpaque = false
material.diffuse.contents = viewController.view
planeGeometry.materials = [material]
like image 147
M Reza Avatar answered Sep 28 '22 14:09

M Reza