Entity not reacting to light and not casting shadow in VIsionOS Simulator

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Created Jan ’24

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Hi Guys, I've been trying to put my model to react to light in visionOS Simulator by editing the component in Reality Composer Pro and also modifying it by code, but I can only put the shadow if I put it as an usdz file, it's not as reflective as when I see it on reality converter or reality composer pro, does someone have this problem too?

RealityView { content in
    
    if let bigDonut = try? await ModelEntity(named: "bigdonut", in: realityKitContentBundle) {
        
        print("LOADED")
        
        // Create anchor for horizontal placement on a table
        let anchor = AnchorEntity(.plane(.horizontal, classification: .table, minimumBounds: [0,0]))
        
        // Configure scale and position 
        bigDonut.setScale([1,1,1], relativeTo: anchor)
        bigDonut.setPosition([0,0.2,0], relativeTo: anchor)
        
        // Add the anchor
        content.add(anchor)
        
        // Enable shadow casting but this does not work
        bigDonut.components.set(GroundingShadowComponent(castsShadow: true))
    }
    
}

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Answer 1

mesqueeb OP

Jan ’24

GroundingShadowComponent(castsShadow: true) needs to be applied to the first layer you have that actually has the mesh. In Apple language sometimes called the ModelEntity. Probably bigDonut has an extra /Root layer, so you need to dig into the children, find the ModelEntity and apply the shadow there.

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