Created
September 1, 2024 04:45
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RealityView for testing the various properties of PhysicallyBasedMaterial
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| import RealityKit | |
| import SwiftUI | |
| struct PhysicallyBasedMaterialPickerView2: View { | |
| @State var entity: ModelEntity? | |
| @State var baseColorTextureResource: TextureResource? | |
| @State var materialParameters: PhysicallyBasedMaterialParameters = PhysicallyBasedMaterialParameters() | |
| var body: some View { | |
| RealityView { content in | |
| baseColorTextureResource = try! await loadTextureResource() // | |
| let entity = generateEntity() | |
| content.add(entity) | |
| entity.position.z = -0.4 | |
| self.entity = entity | |
| } | |
| .ornament(attachmentAnchor: .scene(.bottomFront)) { | |
| // Move this to a separate Window if you're not in Preview to fix the crash on ColorPicker | |
| SettingsView(materialParameters: $materialParameters) | |
| } | |
| .onChange(of: materialParameters) { oldValue, newValue in | |
| entity?.model?.materials = [getMaterial()] | |
| } | |
| } | |
| func generateEntity() -> ModelEntity { | |
| let meshResource = MeshResource.generateSphere(radius: 0.2) | |
| return ModelEntity(mesh: meshResource, materials: [getMaterial()]) | |
| } | |
| func getMaterial() -> RealityKit.Material { | |
| var material = PhysicallyBasedMaterial() | |
| material.metallic = .init(floatLiteral: materialParameters.metallic) | |
| material.roughness = .init(floatLiteral: materialParameters.roughness) | |
| material.baseColor.tint = materialParameters.baseColor | |
| material.faceCulling = .none | |
| material.blending = .transparent(opacity: 1.0) | |
| material.clearcoat = .init(floatLiteral: materialParameters.clearcoat) | |
| material.clearcoatRoughness = .init(floatLiteral: materialParameters.clearcoatRoughness) | |
| material.anisotropyLevel = .init(floatLiteral: materialParameters.anisotropyLevel) | |
| material.anisotropyAngle = .init(floatLiteral: materialParameters.anisotropyAngle) | |
| material.emissiveColor = .init(color: materialParameters.emissiveColor) | |
| material.emissiveIntensity = materialParameters.emissiveIntensity | |
| if materialParameters.applyTexture { | |
| material.baseColor.texture = .init(baseColorTextureResource!) | |
| } | |
| return material | |
| } | |
| func loadTextureResource(url: URL = URL(string: "https://matt54.github.io/Resources/CamoPattern.png")!) async throws -> TextureResource { | |
| let (data, _) = try await URLSession.shared.data(from: url) | |
| let image = UIImage(data: data)! | |
| let cgImage = image.cgImage! | |
| return try await TextureResource(image: cgImage, options: .init(semantic: nil)) | |
| } | |
| struct PhysicallyBasedMaterialParameters: Equatable { | |
| var baseColor: UIColor = .magenta | |
| var metallic: Float = 0.0 | |
| var roughness: Float = 0.0 | |
| var clearcoat: Float = 0.0 | |
| var clearcoatRoughness: Float = 0.5 | |
| var anisotropyLevel: Float = 0.0 | |
| var anisotropyAngle: Float = 0.25 | |
| var emissiveColor: UIColor = .black | |
| var emissiveIntensity: Float = 0.0 | |
| var applyTexture: Bool = false | |
| } | |
| struct SettingsView: View { | |
| @Binding var materialParameters: PhysicallyBasedMaterialParameters | |
| var backgroundColor: Color { | |
| return Color(materialParameters.baseColor) | |
| } | |
| var body: some View { | |
| VStack(alignment: .leading) { | |
| HStack { | |
| Text("Metallic: \(materialParameters.metallic, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.metallic) | |
| .frame(width: 225) | |
| } | |
| HStack { | |
| Text("Roughness: \(materialParameters.roughness, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.roughness) | |
| .frame(width: 225) | |
| } | |
| HStack { | |
| Text("Clear coat: \(materialParameters.clearcoat, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.clearcoat) | |
| .frame(width: 225) | |
| } | |
| HStack { | |
| Text("Clear Coat Roughness: \(materialParameters.clearcoatRoughness, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.clearcoatRoughness) | |
| .frame(width: 225) | |
| } | |
| ColorPicker("Emmissive Color", selection: Binding( | |
| get: { Color(materialParameters.emissiveColor) }, | |
| set: { materialParameters.emissiveColor = UIColor($0) } | |
| )) | |
| HStack { | |
| Text("Emmissive Intensity: \(materialParameters.emissiveIntensity, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.emissiveIntensity, in: 0...3) | |
| .frame(width: 225) | |
| } | |
| HStack { | |
| Text("Anisotropy Level: \(materialParameters.anisotropyLevel, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.anisotropyLevel) | |
| .frame(width: 225) | |
| } | |
| HStack { | |
| Text("Anisotropy Angle: \(materialParameters.anisotropyAngle, specifier: "%.3f")") | |
| Spacer(minLength: 0) | |
| Slider(value: $materialParameters.anisotropyAngle) | |
| .frame(width: 225) | |
| } | |
| ColorPicker("Base Color", selection: Binding( | |
| get: { Color(materialParameters.baseColor) }, | |
| set: { materialParameters.baseColor = UIColor($0) } | |
| )) | |
| HStack { | |
| Text("Apply Texture: \(materialParameters.applyTexture)") | |
| Spacer(minLength: 0) | |
| Toggle(isOn: $materialParameters.applyTexture, label: {Text("")}) | |
| .frame(width: 225) | |
| } | |
| } | |
| .frame(width: 400) | |
| .padding() | |
| .background(backgroundColor.opacity(0.5)) | |
| .cornerRadius(20) | |
| } | |
| } | |
| } | |
| #Preview { | |
| PhysicallyBasedMaterialPickerView2() | |
| } |
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