Add MoonWatch app, widget extension, shared module, and .gitignore

Adds the real MoonWatch implementation on top of the initial Xcode template: new SwiftUI views (MoonDiskView, StarFieldView), the MoonWatchWidget extension, and a Shared module containing the moon phase calculator, shadow shape, and shared asset catalog. Also adds a Swift/Xcode/macOS .gitignore and untracks per-user xcuserdata files. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-07 21:05:16 -07:00
parent 1698e3ce15
commit 87f8c7173c
17 changed files with 1211 additions and 24 deletions
--- a/Shared/MoonImageDisk.swift
+++ b/Shared/MoonImageDisk.swift
@@ -0,0 +1,105 @@
+//
+//  MoonImageDisk.swift
+//  Shared moon disk view used by both the app and widget.
+//
+//  Renders the bundled "Moon" image masked to a circle, applies the
+//  geometric phase shadow (multiplied for soft Earthshine), a subtle
+//  spherical limb darkening, and a crisp limb stroke.
+//
+
+import SwiftUI
+
+public struct MoonImageDisk: View {
+    public var normalizedPhase: Double
+    /// Mirror horizontally for southern hemisphere observers.
+    public var southernHemisphere: Bool
+    /// Scale the moon photo inside the circle (e.g. if the source has
+    /// a small black border around the disk).
+    public var imageScale: CGFloat
+
+    public init(
+        normalizedPhase: Double,
+        southernHemisphere: Bool = false,
+        imageScale: CGFloat = 1.30
+    ) {
+        self.normalizedPhase = normalizedPhase
+        self.southernHemisphere = southernHemisphere
+        self.imageScale = imageScale
+    }
+
+    public var body: some View {
+        GeometryReader { geo in
+            let side = min(geo.size.width, geo.size.height)
+
+            ZStack {
+                Image("Moon", bundle: .main)
+                    .resizable()
+                    .interpolation(.high)
+                    .aspectRatio(contentMode: .fill)
+                    .frame(width: side, height: side)
+                    .scaleEffect(imageScale)
+
+                MoonShadowShape(phaseFraction: normalizedPhase)
+                    .fill(
+                        RadialGradient(
+                            colors: [
+                                Color(red: 0.04, green: 0.04, blue: 0.10),
+                                Color(red: 0.01, green: 0.01, blue: 0.04),
+                            ],
+                            center: .center,
+                            startRadius: 0,
+                            endRadius: side * 0.6
+                        )
+                    )
+                    .blur(radius: max(1.0, side * 0.018))
+                    .blendMode(.multiply)
+            }
+            .frame(width: side, height: side)
+            .compositingGroup()
+            .clipShape(Circle())
+            .scaleEffect(x: southernHemisphere ? -1 : 1, y: 1)
+            .overlay {
+                Circle()
+                    .strokeBorder(
+                        LinearGradient(
+                            colors: [
+                                Color.white.opacity(0.40),
+                                Color.white.opacity(0.05),
+                                Color.black.opacity(0.30),
+                            ],
+                            startPoint: .topLeading,
+                            endPoint: .bottomTrailing
+                        ),
+                        lineWidth: max(0.6, side * 0.005)
+                    )
+                    .frame(width: side, height: side)
+            }
+            .frame(maxWidth: .infinity, maxHeight: .infinity)
+        }
+        .aspectRatio(1, contentMode: .fit)
+    }
+}
+
+#Preview("Waxing Crescent") {
+    ZStack {
+        Color(red: 0.04, green: 0.05, blue: 0.12).ignoresSafeArea()
+        MoonImageDisk(normalizedPhase: 0.12)
+            .frame(width: 280, height: 280)
+    }
+}
+
+#Preview("Waxing Gibbous") {
+    ZStack {
+        Color(red: 0.04, green: 0.05, blue: 0.12).ignoresSafeArea()
+        MoonImageDisk(normalizedPhase: 0.35)
+            .frame(width: 280, height: 280)
+    }
+}
+
+#Preview("Full") {
+    ZStack {
+        Color(red: 0.04, green: 0.05, blue: 0.12).ignoresSafeArea()
+        MoonImageDisk(normalizedPhase: 0.50)
+            .frame(width: 280, height: 280)
+    }
+}