917 lines
34 KiB
Swift
917 lines
34 KiB
Swift
import SwiftUI
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import SceneKit
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import Metal
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import ICCeryCore
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import simd
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/// Builds a SceneKit geometry from a `GamutMesh` while dropping faces whose
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/// indices are not backed by a vertex in the source mesh.
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@MainActor
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internal struct GamutSceneGeometryBuilder {
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static func geometry(for mesh: GamutMesh) -> (SCNGeometry, SCNGeometryElement) {
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let positions = mesh.vertices.map { $0.position }
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let positionData = positions.withUnsafeBytes { Data($0) }
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let positionSource = SCNGeometrySource(
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data: positionData,
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semantic: .vertex,
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vectorCount: positions.count,
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usesFloatComponents: true,
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componentsPerVector: 3,
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bytesPerComponent: MemoryLayout<Float>.size,
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dataOffset: 0,
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dataStride: MemoryLayout<SIMD3<Float>>.stride
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)
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let colors: [SIMD4<Float>] = mesh.vertices.map { v in
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SIMD4<Float>(Float(v.rgb.r), Float(v.rgb.g), Float(v.rgb.b), 1.0)
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}
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let colorData = colors.withUnsafeBytes { Data($0) }
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let colorSource = SCNGeometrySource(
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data: colorData,
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semantic: .color,
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vectorCount: colors.count,
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usesFloatComponents: true,
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componentsPerVector: 4,
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bytesPerComponent: MemoryLayout<Float>.size,
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dataOffset: 0,
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dataStride: MemoryLayout<SIMD4<Float>>.stride
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)
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let vcount = mesh.vertices.count
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var indices: [UInt32] = []
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var validFaces: [GamutTriangle] = []
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indices.reserveCapacity(mesh.faces.count * 3)
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for face in mesh.faces {
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guard Int(face.a) < vcount, Int(face.b) < vcount, Int(face.c) < vcount else {
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continue
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}
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indices.append(face.a)
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indices.append(face.b)
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indices.append(face.c)
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validFaces.append(face)
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}
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let data = indices.withUnsafeBytes { Data($0) }
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let element = SCNGeometryElement(
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data: data,
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primitiveType: .triangles,
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primitiveCount: validFaces.count,
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bytesPerIndex: 4
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)
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let geometry = SCNGeometry(sources: [positionSource, colorSource], elements: [element])
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return (geometry, element)
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}
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}
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/// Native SceneKit 3D gamut viewer (issues #28, #147).
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///
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/// Displays the bundled `sRGB.gam` reference plus up to two profile
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/// meshes with independent visibility toggles, a status line, and an
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/// inspect panel (click a mesh, type a Lab value, or sample a TIFF
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/// pixel). Uses the CIELAB coordinate convention `x = a*`, `y = L*`,
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/// `z = b*`.
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struct GamutView: View {
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@StateObject private var viewModel: GamutViewModel
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@State private var pause: () -> Void = {}
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@FocusState private var isFocused: Bool
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@Environment(\.dismiss) private var dismiss
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@Binding var showingAllHelp: Bool
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init(
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environment: AppEnvironment,
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profileGamURL: URL? = nil,
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showingAllHelp: Binding<Bool>
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) {
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_viewModel = StateObject(wrappedValue: GamutViewModel(
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environment: environment, profileGamURL: profileGamURL))
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_showingAllHelp = showingAllHelp
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}
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var body: some View {
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VStack(spacing: 0) {
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toolbar
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Divider().overlay(Theme.border)
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sceneArea
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Divider().overlay(Theme.border)
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statusLine
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inspectPanel
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Divider().overlay(Theme.border)
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footer
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}
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.frame(minWidth: 720, minHeight: 520)
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.background(Theme.background)
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.onDisappear { pause() }
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.accessibilityElement(children: .contain)
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.accessibilityIdentifier("gamutView")
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.sheet(isPresented: $viewModel.showingTiffPreview) {
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tiffPreviewSheet
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}
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}
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// MARK: - Toolbar
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private var toolbar: some View {
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HStack(spacing: 12) {
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layerToggle(id: GamutViewModel.srgbLayerID, fallback: "sRGB")
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layerToggle(id: GamutViewModel.profileLayerID, fallback: "Profile")
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layerToggle(id: GamutViewModel.compareLayerID, fallback: "Compare")
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Spacer()
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addCompareMenu
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Button("Remove compare") { viewModel.removeCompare() }
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.disabled(viewModel.layer(id: GamutViewModel.compareLayerID) == nil)
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.accessibilityIdentifier("btnGamutRemoveCompare")
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Button("Sample TIFF…") { viewModel.openTiffSample() }
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.accessibilityIdentifier("btnGamutSampleTiff")
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.helpOverlay(
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"Sample a colour from a target TIFF page.",
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showing: $showingAllHelp)
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}
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.padding(.horizontal, 12)
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.padding(.vertical, 8)
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}
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private func layerToggle(id: String, fallback: String) -> some View {
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let layer = viewModel.layer(id: id)
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return Toggle(isOn: Binding(
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get: { layer != nil && viewModel.visibleIDs.contains(id) },
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set: { on in
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if on {
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viewModel.visibleIDs.insert(id)
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} else {
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viewModel.visibleIDs.remove(id)
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}
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}
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)) {
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Text(layer?.displayName ?? fallback)
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}
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.toggleStyle(.checkbox)
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.disabled(layer == nil)
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.help(layer.map { $0.sourceURL.lastPathComponent } ?? "No profile .gam loaded")
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// macOS 12 puts the identifier on the Toggle's container, an
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// element that never reports isEnabled — combine so the a11y
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// leaf is the checkbox itself.
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.accessibilityElement(children: .combine)
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.accessibilityIdentifier("gamutLayer-\(id)")
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}
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private var addCompareMenu: some View {
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Menu("Add compare…") {
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Button("Open .gam…") { viewModel.openCompareGam() }
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.accessibilityIdentifier("btnGamutOpenGam")
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Button("Open profile…") { viewModel.openCompareProfile() }
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.accessibilityIdentifier("btnGamutOpenProfile")
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}
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.accessibilityIdentifier("btnGamutAddCompare")
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.helpOverlay(
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"Add a second profile or .gam mesh to compare against.",
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showing: $showingAllHelp)
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}
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// MARK: - Scene
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private var sceneArea: some View {
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ZStack(alignment: .topTrailing) {
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if viewModel.viewerUnavailable {
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Text("3D gamut viewer is unavailable on this Mac; the rest of ICCery still works.")
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.font(.callout)
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.foregroundStyle(.secondary)
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.frame(maxWidth: .infinity, maxHeight: .infinity)
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.accessibilityIdentifier("gamutViewerUnavailable")
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} else {
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GamutSceneView(
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layers: viewModel.layers,
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visibleIDs: viewModel.visibleIDs,
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onReset: $viewModel.resetCamera,
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onPause: $pause,
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onUnavailable: { viewModel.viewerUnavailable = true },
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onInspect: { point, layerID in
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if let layerID {
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viewModel.inspectSceneHit(world: point, layerID: layerID)
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} else {
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viewModel.clearInspect()
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}
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}
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)
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.focusable()
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.focused($isFocused)
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.onAppear { isFocused = true }
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}
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Button(action: { viewModel.resetCamera() }) {
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Text("Reset view")
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}
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.accessibilityIdentifier("btnResetGamutCamera")
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.padding(8)
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}
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.frame(maxWidth: .infinity, maxHeight: .infinity)
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}
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// MARK: - Status
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private var statusLine: some View {
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HStack(spacing: 10) {
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Text(viewModel.status)
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.font(.caption)
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.foregroundStyle(Theme.text)
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.accessibilityIdentifier("gamutStatusText")
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if let notice = viewModel.noticeText {
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Text(notice)
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.font(.caption)
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.foregroundStyle(.secondary)
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.accessibilityIdentifier("gamutNoticeText")
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}
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Spacer()
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}
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.padding(.horizontal, 12)
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.padding(.vertical, 6)
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}
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// MARK: - Inspect panel
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private var inspectPanel: some View {
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HStack(spacing: 12) {
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if let lab = viewModel.inspectLab {
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inspectSwatch
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labReadout(lab)
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containmentColumn
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if viewModel.inspectIsApproximate {
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Text("approx. Lab, not ColorSync")
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.font(.caption2)
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.foregroundStyle(.secondary)
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.accessibilityIdentifier("gamutInspectApprox")
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}
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} else {
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Text("Click the mesh, or enter Lab, to inspect.")
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.font(.caption)
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.foregroundStyle(.secondary)
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.accessibilityIdentifier("gamutInspectIdle")
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}
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Spacer()
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labEntryFields
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}
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.padding(.horizontal, 12)
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.padding(.vertical, 8)
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.frame(minHeight: 56)
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.background(Theme.panel)
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.accessibilityElement(children: .contain)
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.accessibilityIdentifier("gamutInspectPanel")
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.helpOverlay(
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"Inspect a Lab point against each loaded gamut.",
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showing: $showingAllHelp)
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}
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@ViewBuilder
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private var inspectSwatch: some View {
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if let swatch = viewModel.inspectSwatch {
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Color(red: swatch.r, green: swatch.g, blue: swatch.b)
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.frame(width: 16, height: 16)
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.clipShape(RoundedRectangle(cornerRadius: 2))
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.overlay(RoundedRectangle(cornerRadius: 2).stroke(Theme.border))
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.accessibilityIdentifier("gamutInspectSwatch")
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}
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}
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private func labReadout(_ lab: LabColor) -> some View {
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HStack(spacing: 10) {
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Text(String(format: "L %.1f", lab.l))
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.accessibilityIdentifier("gamutInspectL")
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Text(String(format: "a %.1f", lab.a))
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.accessibilityIdentifier("gamutInspectA")
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Text(String(format: "b %.1f", lab.b))
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.accessibilityIdentifier("gamutInspectB")
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}
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.font(.caption.monospacedDigit())
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.foregroundStyle(Theme.text)
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}
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private var containmentColumn: some View {
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HStack(spacing: 10) {
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ForEach(viewModel.inspectResults, id: \.id) { result in
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Text("\(result.name) \(containmentWord(result.containment))")
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.font(.caption)
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.foregroundStyle(Theme.text)
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.accessibilityIdentifier("gamutInspect-\(result.id)")
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}
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}
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}
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private func containmentWord(_ containment: GamutContainment) -> String {
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switch containment {
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case .inside: return "in"
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case .outside: return "out"
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case .unknown: return "?"
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}
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}
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private var labEntryFields: some View {
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HStack(spacing: 6) {
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Text("Lab 0–100 · ±128")
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.font(.caption2)
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.foregroundStyle(.secondary)
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TextField("L", text: $viewModel.labEntryL)
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.textFieldStyle(.roundedBorder)
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.frame(width: 56)
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.accessibilityIdentifier("gamutLabEntryL")
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TextField("a", text: $viewModel.labEntryA)
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.textFieldStyle(.roundedBorder)
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.frame(width: 56)
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.accessibilityIdentifier("gamutLabEntryA")
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TextField("b", text: $viewModel.labEntryB)
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.textFieldStyle(.roundedBorder)
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.frame(width: 56)
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.accessibilityIdentifier("gamutLabEntryB")
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Button("Inspect") { viewModel.inspectEnteredLab() }
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.disabled(!viewModel.canInspectLab)
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.accessibilityIdentifier("btnGamutInspectLab")
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}
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}
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// MARK: - Footer
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/// Always-visible Close (#147) — the fallback banner keeps it
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/// reachable and Escape works via `.cancelAction` without SceneKit.
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private var footer: some View {
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HStack {
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Spacer()
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Button("Close") { dismiss() }
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.keyboardShortcut(.cancelAction)
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.accessibilityIdentifier("btnCloseGamut")
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}
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.padding(.horizontal, 12)
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.padding(.vertical, 8)
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}
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// MARK: - TIFF sample sheet
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private var tiffPreviewSheet: some View {
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VStack(spacing: 12) {
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Text("Click a pixel to sample its colour.")
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.font(.headline)
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.foregroundStyle(Theme.text)
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if let png = viewModel.tiffPreviewPNG {
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TiffSampleImageView(pngData: png) { r, g, b in
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viewModel.sampleTiffPixel(r: r, g: g, b: b)
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}
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.frame(minWidth: 320, minHeight: 240)
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}
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HStack {
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Spacer()
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Button("Cancel") { viewModel.showingTiffPreview = false }
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.accessibilityIdentifier("btnCloseGamutTiffPreview")
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}
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}
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.padding(16)
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.background(Theme.background)
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.accessibilityElement(children: .contain)
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.accessibilityIdentifier("gamutTiffPreview")
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}
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}
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/// `NSViewRepresentable` wrapper around an `SCNView` rendering one node
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/// per ``NamedGamut`` layer.
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///
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/// Layer toggles hide/show `SCNNode`s — the scene is built once and the
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/// camera is only reset through the explicit reset path, never on a
|
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/// mesh or visibility update.
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private struct GamutSceneView: NSViewRepresentable {
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var layers: [NamedGamut]
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var visibleIDs: Set<String>
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var onReset: Binding<() -> Void>
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var onPause: Binding<() -> Void>
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var onUnavailable: () -> Void
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var onInspect: (SIMD3<Float>, String?) -> Void
|
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func makeNSView(context: Context) -> SCNView {
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let scnView = SCNView()
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scnView.backgroundColor = NSColor(red: 0.055, green: 0.055, blue: 0.078, alpha: 1)
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scnView.allowsCameraControl = true
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scnView.showsStatistics = false
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scnView.antialiasingMode = .multisampling4X
|
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let scene = SCNScene()
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scnView.scene = scene
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scnView.autoenablesDefaultLighting = false
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context.coordinator.scnView = scnView
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context.coordinator.scene = scene
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context.coordinator.onInspect = onInspect
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context.coordinator.buildSceneOnce()
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context.coordinator.syncLayers(layers, visibleIDs: visibleIDs)
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context.coordinator.installKeyMonitor()
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context.coordinator.installClickGesture()
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// Safety net only — the primary no-Metal check is
|
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// `GamutSceneAvailability.isAvailable`, evaluated before this
|
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// view is mounted. Never respawn the view in a loop.
|
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if MTLCreateSystemDefaultDevice() == nil {
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DispatchQueue.main.async { onUnavailable() }
|
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}
|
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return scnView
|
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}
|
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func updateNSView(_ nsView: SCNView, context: Context) {
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context.coordinator.onInspect = onInspect
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context.coordinator.syncLayers(layers, visibleIDs: visibleIDs)
|
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}
|
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|
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func makeCoordinator() -> Coordinator {
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let coordinator = Coordinator()
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onReset.wrappedValue = { [weak coordinator] in
|
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coordinator?.resetCamera()
|
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}
|
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onPause.wrappedValue = { [weak coordinator] in
|
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coordinator?.pause()
|
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}
|
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return coordinator
|
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}
|
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|
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static func dismantleNSView(_ nsView: SCNView, coordinator: Coordinator) {
|
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coordinator.removeKeyMonitor()
|
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if let click = coordinator.clickGesture {
|
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nsView.removeGestureRecognizer(click)
|
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}
|
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nsView.isPlaying = false
|
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}
|
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|
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@MainActor
|
||
final class Coordinator: NSObject {
|
||
weak var scnView: SCNView?
|
||
weak var scene: SCNScene?
|
||
var onInspect: (SIMD3<Float>, String?) -> Void = { _, _ in }
|
||
private(set) var clickGesture: NSClickGestureRecognizer?
|
||
private var keyMonitor: Any?
|
||
|
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/// One `SCNNode` per loaded layer, keyed by `NamedGamut.id`.
|
||
private var layerNodes: [String: SCNNode] = [:]
|
||
private let axisNode = SCNNode()
|
||
private let layerGroup = SCNNode()
|
||
private let cameraNode: SCNNode = {
|
||
let node = SCNNode()
|
||
node.camera = SCNCamera()
|
||
node.camera?.zFar = 2000
|
||
return node
|
||
}()
|
||
|
||
/// Builds the static scene furniture exactly once — axis
|
||
/// scaffold, lights, camera home. Layer content lives under
|
||
/// `layerGroup` and is managed by `syncLayers`.
|
||
func buildSceneOnce() {
|
||
guard let scene, scene.rootNode.childNodes.isEmpty else { return }
|
||
|
||
scene.rootNode.addChildNode(axisNode)
|
||
scene.rootNode.addChildNode(layerGroup)
|
||
scene.rootNode.addChildNode(cameraNode)
|
||
|
||
buildAxisScaffold()
|
||
addLights(to: scene)
|
||
resetCamera()
|
||
}
|
||
|
||
/// Reconciles the node set with `layers` and `visibleIDs`.
|
||
///
|
||
/// New layers get a node; removed layers lose theirs; hidden
|
||
/// layers keep their mesh (`isHidden` only). Never rebuilds the
|
||
/// scene, so the camera is untouched by a checkbox toggle.
|
||
func syncLayers(_ layers: [NamedGamut], visibleIDs: Set<String>) {
|
||
guard scene != nil else { return }
|
||
let wanted = Set(layers.map { $0.id })
|
||
for (id, node) in layerNodes where !wanted.contains(id) {
|
||
node.removeFromParentNode()
|
||
layerNodes.removeValue(forKey: id)
|
||
}
|
||
for layer in layers {
|
||
if layerNodes[layer.id] == nil {
|
||
let node = makeLayerNode(for: layer)
|
||
layerNodes[layer.id] = node
|
||
layerGroup.addChildNode(node)
|
||
}
|
||
layerNodes[layer.id]?.isHidden = !visibleIDs.contains(layer.id)
|
||
}
|
||
}
|
||
|
||
private func makeLayerNode(for layer: NamedGamut) -> SCNNode {
|
||
let node: SCNNode
|
||
switch layer.role {
|
||
case .reference:
|
||
node = referenceMeshNode(layer.mesh)
|
||
case .profileA:
|
||
node = profileMeshNode(layer.mesh)
|
||
case .profileB:
|
||
node = compareMeshNode(layer.mesh)
|
||
}
|
||
node.name = layer.id
|
||
return node
|
||
}
|
||
|
||
// MARK: - Click inspect (#147)
|
||
|
||
/// Click (not drag) hit-tests the scene. `NSClickGestureRecognizer`
|
||
/// only fires on a press+release in place, so orbit drags are
|
||
/// untouched.
|
||
func installClickGesture() {
|
||
guard let scnView, clickGesture == nil else { return }
|
||
let gesture = NSClickGestureRecognizer(target: self, action: #selector(handleClick(_:)))
|
||
scnView.addGestureRecognizer(gesture)
|
||
clickGesture = gesture
|
||
}
|
||
|
||
@objc private func handleClick(_ gesture: NSClickGestureRecognizer) {
|
||
guard let scnView else { return }
|
||
let point = gesture.location(in: scnView)
|
||
for hit in scnView.hitTest(point, options: nil) {
|
||
if let layerID = layerID(for: hit.node) {
|
||
let world = hit.worldCoordinates
|
||
onInspect(
|
||
SIMD3<Float>(Float(world.x), Float(world.y), Float(world.z)),
|
||
layerID)
|
||
return
|
||
}
|
||
}
|
||
// Axis scaffold / empty background → back to idle.
|
||
onInspect(.zero, nil)
|
||
}
|
||
|
||
/// Walks the hit node's ancestor chain looking for a layer node.
|
||
private func layerID(for node: SCNNode) -> String? {
|
||
var current: SCNNode? = node
|
||
while let node = current {
|
||
if let name = node.name, layerNodes[name] != nil { return name }
|
||
current = node.parent
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// MARK: - Scene furniture (unchanged from #28)
|
||
|
||
private func addLights(to scene: SCNScene) {
|
||
let ambient = SCNNode()
|
||
ambient.light = SCNLight()
|
||
ambient.light?.type = .ambient
|
||
ambient.light?.color = NSColor.white
|
||
ambient.light?.intensity = 750
|
||
scene.rootNode.addChildNode(ambient)
|
||
|
||
let key = SCNNode()
|
||
key.light = SCNLight()
|
||
key.light?.type = .directional
|
||
key.light?.color = NSColor.white
|
||
key.light?.intensity = 800
|
||
key.position = SCNVector3(150, 250, 150)
|
||
key.look(at: SCNVector3(0, 50, 0))
|
||
scene.rootNode.addChildNode(key)
|
||
|
||
let fill = SCNNode()
|
||
fill.light = SCNLight()
|
||
fill.light?.type = .directional
|
||
fill.light?.color = NSColor.white
|
||
fill.light?.intensity = 350
|
||
fill.position = SCNVector3(-120, -80, -120)
|
||
fill.look(at: SCNVector3(0, 50, 0))
|
||
scene.rootNode.addChildNode(fill)
|
||
}
|
||
|
||
private func buildAxisScaffold() {
|
||
axisNode.childNodes.forEach { $0.removeFromParentNode() }
|
||
|
||
// Bounding box: a*,b* ±128, L* 0–100.
|
||
let box = buildWireBox(size: SIMD3<Float>(256, 100, 256), color: NSColor(red: 0.137, green: 0.137, blue: 0.212, alpha: 0.9))
|
||
box.position = SCNVector3(0, 50, 0)
|
||
axisNode.addChildNode(box)
|
||
|
||
// Ground grid at y=0.
|
||
axisNode.addChildNode(buildGridNode())
|
||
|
||
// Axis lines.
|
||
axisNode.addChildNode(buildLineNode(
|
||
from: SIMD3<Float>(0, 0, 0),
|
||
to: SIMD3<Float>(0, 100, 0),
|
||
color: NSColor(red: 0.8, green: 0.8, blue: 0.8, alpha: 1.0)
|
||
))
|
||
let abAxisColor = NSColor(red: 0.6, green: 0.733, blue: 0.8, alpha: 1.0)
|
||
axisNode.addChildNode(buildLineNode(
|
||
from: SIMD3<Float>(-128, 0, 0),
|
||
to: SIMD3<Float>(128, 0, 0),
|
||
color: abAxisColor
|
||
))
|
||
axisNode.addChildNode(buildLineNode(
|
||
from: SIMD3<Float>(0, 0, -128),
|
||
to: SIMD3<Float>(0, 0, 128),
|
||
color: abAxisColor
|
||
))
|
||
}
|
||
|
||
private func buildWireBox(size: SIMD3<Float>, color: NSColor) -> SCNNode {
|
||
let hx = size.x / 2
|
||
let hy = size.y / 2
|
||
let hz = size.z / 2
|
||
|
||
let corners: [SIMD3<Float>] = [
|
||
SIMD3(-hx, -hy, -hz), SIMD3(hx, -hy, -hz),
|
||
SIMD3(hx, -hy, hz), SIMD3(-hx, -hy, hz),
|
||
SIMD3(-hx, hy, -hz), SIMD3(hx, hy, -hz),
|
||
SIMD3(hx, hy, hz), SIMD3(-hx, hy, hz),
|
||
]
|
||
|
||
// 12 edges, two vertices each.
|
||
let edges: [(Int, Int)] = [
|
||
(0,1), (1,2), (2,3), (3,0),
|
||
(4,5), (5,6), (6,7), (7,4),
|
||
(0,4), (1,5), (2,6), (3,7),
|
||
]
|
||
|
||
var points: [SIMD3<Float>] = []
|
||
for (a, b) in edges {
|
||
points.append(corners[a])
|
||
points.append(corners[b])
|
||
}
|
||
|
||
return lineNode(points: points, color: color)
|
||
}
|
||
|
||
private func buildGridNode() -> SCNNode {
|
||
let divisions = 16
|
||
let half = Float(128)
|
||
let step = (half * 2) / Float(divisions)
|
||
|
||
var points: [SIMD3<Float>] = []
|
||
for i in 0...divisions {
|
||
let v = -half + step * Float(i)
|
||
// X-aligned
|
||
points.append(SIMD3(-half, 0, v))
|
||
points.append(SIMD3(half, 0, v))
|
||
// Z-aligned
|
||
points.append(SIMD3(v, 0, -half))
|
||
points.append(SIMD3(v, 0, half))
|
||
}
|
||
|
||
let gridColor = NSColor(red: 0.118, green: 0.118, blue: 0.157, alpha: 1.0)
|
||
return lineNode(points: points, color: gridColor)
|
||
}
|
||
|
||
private func buildLineNode(from: SIMD3<Float>, to: SIMD3<Float>, color: NSColor) -> SCNNode {
|
||
return lineNode(points: [from, to], color: color)
|
||
}
|
||
|
||
/// Builds a line-set from a flat list of point pairs.
|
||
///
|
||
/// Uses data-backed `SCNGeometrySource` so it works with `simd` vectors
|
||
/// and avoids the SceneKit convenience-initializer label mismatch.
|
||
private func lineNode(points: [SIMD3<Float>], color: NSColor) -> SCNNode {
|
||
let source = source(for: points)
|
||
|
||
let count = points.count
|
||
var indices: [UInt32] = []
|
||
indices.reserveCapacity(count)
|
||
for i in 0..<UInt32(count) {
|
||
indices.append(i)
|
||
}
|
||
let data = indices.withUnsafeBytes { Data($0) }
|
||
let element = SCNGeometryElement(
|
||
data: data,
|
||
primitiveType: .line,
|
||
primitiveCount: count / 2,
|
||
bytesPerIndex: 4
|
||
)
|
||
|
||
let geometry = SCNGeometry(sources: [source], elements: [element])
|
||
let material = SCNMaterial()
|
||
material.lightingModel = .constant
|
||
material.diffuse.contents = color
|
||
material.isDoubleSided = false
|
||
geometry.materials = [material]
|
||
|
||
return SCNNode(geometry: geometry)
|
||
}
|
||
|
||
/// Profile A: solid vertex-coloured surface.
|
||
private func profileMeshNode(_ mesh: GamutMesh) -> SCNNode {
|
||
let (geometry, _) = scnGeometry(for: mesh)
|
||
|
||
let material = SCNMaterial()
|
||
material.lightingModel = .lambert
|
||
material.diffuse.contents = NSColor.white
|
||
material.transparency = 0.88
|
||
material.isDoubleSided = true
|
||
geometry.materials = [material]
|
||
|
||
return SCNNode(geometry: geometry)
|
||
}
|
||
|
||
/// Compare profile B: same vertex colours at ~30 % opacity so
|
||
/// overlaps with A and the sRGB reference stay readable.
|
||
private func compareMeshNode(_ mesh: GamutMesh) -> SCNNode {
|
||
let (geometry, _) = scnGeometry(for: mesh)
|
||
|
||
let material = SCNMaterial()
|
||
material.lightingModel = .lambert
|
||
material.diffuse.contents = NSColor.white
|
||
material.transparency = 0.30
|
||
material.isDoubleSided = true
|
||
material.writesToDepthBuffer = false
|
||
geometry.materials = [material]
|
||
|
||
return SCNNode(geometry: geometry)
|
||
}
|
||
|
||
/// Bundled sRGB reference: faint fill + structural edge lines.
|
||
private func referenceMeshNode(_ mesh: GamutMesh) -> SCNNode {
|
||
let (geometry, _) = scnGeometry(for: mesh)
|
||
|
||
// Faint fill.
|
||
let fillMaterial = SCNMaterial()
|
||
fillMaterial.lightingModel = .lambert
|
||
fillMaterial.diffuse.contents = NSColor(red: 0.533, green: 0.6, blue: 0.733, alpha: 1.0)
|
||
fillMaterial.transparency = 0.93
|
||
fillMaterial.isDoubleSided = true
|
||
fillMaterial.writesToDepthBuffer = false
|
||
geometry.materials = [fillMaterial]
|
||
|
||
let fillNode = SCNNode(geometry: geometry)
|
||
|
||
// Structural outline: one line per triangle edge.
|
||
var linePoints: [SIMD3<Float>] = []
|
||
let vcount = mesh.vertices.count
|
||
for face in mesh.faces
|
||
where Int(face.a) < vcount && Int(face.b) < vcount && Int(face.c) < vcount {
|
||
let va = mesh.vertices[Int(face.a)].position
|
||
let vb = mesh.vertices[Int(face.b)].position
|
||
let vc = mesh.vertices[Int(face.c)].position
|
||
linePoints.append(va); linePoints.append(vb)
|
||
linePoints.append(vb); linePoints.append(vc)
|
||
linePoints.append(vc); linePoints.append(va)
|
||
}
|
||
|
||
let edgeColor = NSColor(red: 0.4, green: 0.533, blue: 0.667, alpha: 0.55)
|
||
let edgeNode = lineNode(points: linePoints, color: edgeColor)
|
||
|
||
let group = SCNNode()
|
||
group.addChildNode(fillNode)
|
||
group.addChildNode(edgeNode)
|
||
return group
|
||
}
|
||
|
||
/// Returns an `SCNGeometry` with per-vertex positions and sRGB colours.
|
||
///
|
||
/// Uses data-backed `SCNGeometrySource` initializers; this is the only
|
||
/// path that supports vertex colours through the `.color` semantic.
|
||
private func scnGeometry(for mesh: GamutMesh) -> (SCNGeometry, SCNGeometryElement) {
|
||
GamutSceneGeometryBuilder.geometry(for: mesh)
|
||
}
|
||
|
||
/// Shared helper for data-backed position sources.
|
||
private func source(for points: [SIMD3<Float>]) -> SCNGeometrySource {
|
||
let data = points.withUnsafeBytes { Data($0) }
|
||
return SCNGeometrySource(
|
||
data: data,
|
||
semantic: .vertex,
|
||
vectorCount: points.count,
|
||
usesFloatComponents: true,
|
||
componentsPerVector: 3,
|
||
bytesPerComponent: MemoryLayout<Float>.size,
|
||
dataOffset: 0,
|
||
dataStride: MemoryLayout<SIMD3<Float>>.stride
|
||
)
|
||
}
|
||
|
||
func pause() {
|
||
scnView?.isPlaying = false
|
||
}
|
||
|
||
/// Local key-down monitor for the R camera-reset shortcut (the
|
||
/// SwiftUI key-press modifier is unavailable on macOS 12). Only
|
||
/// events aimed at this view's window are handled; everything
|
||
/// else passes through untouched.
|
||
func installKeyMonitor() {
|
||
guard keyMonitor == nil else { return }
|
||
keyMonitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown) {
|
||
[weak self] event in
|
||
guard let self,
|
||
let scnView = self.scnView,
|
||
event.window === scnView.window,
|
||
event.charactersIgnoringModifiers?.uppercased() == "R"
|
||
else { return event }
|
||
self.resetCamera()
|
||
return nil
|
||
}
|
||
}
|
||
|
||
func removeKeyMonitor() {
|
||
if let keyMonitor {
|
||
NSEvent.removeMonitor(keyMonitor)
|
||
self.keyMonitor = nil
|
||
}
|
||
}
|
||
|
||
func resetCamera() {
|
||
guard let scnView else { return }
|
||
|
||
// Re-create the camera node so `allowsCameraControl` starts from the
|
||
// canonical home position every time.
|
||
let newCameraNode = SCNNode()
|
||
newCameraNode.camera = SCNCamera()
|
||
newCameraNode.camera?.zFar = 2000
|
||
|
||
let eye = SIMD3<Float>(180, 120, 180)
|
||
let target = SIMD3<Float>(0, 50, 0)
|
||
newCameraNode.simdTransform = lookAt(eye: eye, target: target, up: SIMD3<Float>(0, 1, 0))
|
||
|
||
if let scene = scnView.scene, scene.rootNode.childNodes.contains(cameraNode) {
|
||
cameraNode.removeFromParentNode()
|
||
}
|
||
scnView.scene?.rootNode.addChildNode(newCameraNode)
|
||
scnView.pointOfView = newCameraNode
|
||
}
|
||
|
||
private func lookAt(eye: SIMD3<Float>, target: SIMD3<Float>, up: SIMD3<Float>) -> simd_float4x4 {
|
||
let forward = normalize(target - eye)
|
||
let right = normalize(cross(up, forward))
|
||
let newUp = cross(forward, right)
|
||
|
||
var matrix = simd_float4x4()
|
||
matrix.columns.0 = SIMD4<Float>(right, 0)
|
||
matrix.columns.1 = SIMD4<Float>(newUp, 0)
|
||
matrix.columns.2 = SIMD4<Float>(-forward, 0)
|
||
matrix.columns.3 = SIMD4<Float>(eye, 1)
|
||
return matrix
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Click-to-sample image view for the TIFF preview sheet (#147).
|
||
///
|
||
/// The TIFF is already decoded to PNG on the host side (#58); the view
|
||
/// reports 8-bit sRGB pixel values at the clicked point — the Lab
|
||
/// conversion is the documented approximate matrix helper, not a CMM.
|
||
private struct TiffSampleImageView: NSViewRepresentable {
|
||
let pngData: Data
|
||
var onSample: (Int, Int, Int) -> Void
|
||
|
||
func makeNSView(context: Context) -> TiffSampleNSView {
|
||
let view = TiffSampleNSView()
|
||
view.image = NSImage(data: pngData)
|
||
view.onSample = onSample
|
||
return view
|
||
}
|
||
|
||
func updateNSView(_ nsView: TiffSampleNSView, context: Context) {
|
||
nsView.onSample = onSample
|
||
}
|
||
}
|
||
|
||
private final class TiffSampleNSView: NSView {
|
||
var image: NSImage? {
|
||
didSet {
|
||
bitmapRep = image?.cgImage(forProposedRect: nil, context: nil, hints: nil)
|
||
.flatMap { NSBitmapImageRep(cgImage: $0) }
|
||
invalidateIntrinsicContentSize()
|
||
needsDisplay = true
|
||
}
|
||
}
|
||
var onSample: ((Int, Int, Int) -> Void)?
|
||
private var bitmapRep: NSBitmapImageRep?
|
||
|
||
override var intrinsicContentSize: NSSize {
|
||
image?.size ?? NSSize(width: 320, height: 240)
|
||
}
|
||
|
||
override var acceptsFirstResponder: Bool { true }
|
||
|
||
override func draw(_ dirtyRect: NSRect) {
|
||
NSColor(red: 0.055, green: 0.055, blue: 0.078, alpha: 1).setFill()
|
||
dirtyRect.fill()
|
||
guard let image else { return }
|
||
image.draw(in: imageRect())
|
||
}
|
||
|
||
override func mouseUp(with event: NSEvent) {
|
||
guard let rep = bitmapRep else { return }
|
||
let rect = imageRect()
|
||
let location = convert(event.locationInWindow, from: nil)
|
||
guard rect.contains(location), rect.width > 0, rect.height > 0 else { return }
|
||
|
||
let x = Int((location.x - rect.minX) / rect.width * CGFloat(rep.pixelsWide))
|
||
// This view is not flipped: y grows up, bitmap rows grow down.
|
||
let y = rep.pixelsHigh - 1
|
||
- Int((location.y - rect.minY) / rect.height * CGFloat(rep.pixelsHigh))
|
||
guard x >= 0, x < rep.pixelsWide, y >= 0, y < rep.pixelsHigh else { return }
|
||
|
||
guard let color = rep.colorAt(x: x, y: y)?.usingColorSpace(.sRGB) else { return }
|
||
onSample?(
|
||
Int((color.redComponent * 255).rounded()),
|
||
Int((color.greenComponent * 255).rounded()),
|
||
Int((color.blueComponent * 255).rounded()))
|
||
}
|
||
|
||
/// Aspect-fit rect of the image inside `bounds`.
|
||
private func imageRect() -> NSRect {
|
||
guard let image, image.size.width > 0, image.size.height > 0 else { return .zero }
|
||
let scale = min(bounds.width / image.size.width, bounds.height / image.size.height)
|
||
let size = NSSize(width: image.size.width * scale, height: image.size.height * scale)
|
||
return NSRect(
|
||
x: (bounds.width - size.width) / 2,
|
||
y: (bounds.height - size.height) / 2,
|
||
width: size.width,
|
||
height: size.height)
|
||
}
|
||
}
|