Hello, I tried to build something with scene reconstruction but I want to add occlusion on the Surfaces how can I do that? I tried to create an entity and than apply an Occlusion Material but I received an ShapeResourece and I should pass an MeshResource to create a mesh for the entity and than apply a material. Any suggestions?
I recommend you download and take a look at the Object Placement developer sample which you can download on this page: https://developer.apple.com/documentation/visionos/placing-content-on-detected-planes?language=objc
In particular, take a look at class PlaneAnchorHandler and how it creates a MeshResource from the plane's geometry and how it sets an OcclusionMaterial for that geometry. The sample also contains the necessary extension for generating the MeshResource from a plane geometry. It should be possible to make this work for mesh geometries with some adjustments.
Edit: I think this extension should work (I have not tested this!):
extension MeshResource.Contents {
init(meshGeometry: MeshAnchor.Geometry) {
self.init()
self.instances = [MeshResource.Instance(id: "main", model: "model")]
var part = MeshResource.Part(id: "part", materialIndex: 0)
part.positions = MeshBuffers.Positions(meshGeometry.vertices.asSIMD3(ofType: Float.self))
part.triangleIndices = MeshBuffer(meshGeometry.faces.asUInt32Array())
self.models = [MeshResource.Model(id: "model", parts: [part])]
}
}
