Package and reeadme updates

2026-05-27 10:36:39 +05:45
parent e6391e0b32
commit 3791708a17
12 changed files with 560 additions and 46 deletions
--- a/.DS_Store
+++ b/.DS_Store
--- a/Assets/Darkmatter/Scenes/GamePlay.unity
+++ b/Assets/Darkmatter/Scenes/GamePlay.unity
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@@ -57,23 +57,25 @@
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-    "com.unity.modules.xr": "1.0.0"
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--- a/Packages/packages-lock.json
+++ b/Packages/packages-lock.json
@@ -345,6 +345,13 @@
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--- a/ProjectSettings/PackageManagerSettings.asset
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@@ -30,18 +30,6 @@ MonoBehaviour:
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@@ -53,7 +41,20 @@ MonoBehaviour:
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--- a/Readme.md
+++ b/Readme.md
@@ -466,7 +466,7 @@ public readonly struct ArtworkSavedSignal {
 ### `Capture`

 - Bound to the "Capture" button.
- Calls `ICaptureService.CaptureAsync(artCamera, template.PaperBackground)` → PNG bytes.
+- Calls `ICaptureService.CaptureAsync()` → PNG bytes. Capture reads `IPaperRig.Surface` directly; no camera or paper-bg args needed.
 - Hands bytes to `IGalleryService.SaveAsync(...)`.
 - Fires `ArtworkCapturedSignal` then `ArtworkSavedSignal`.
 - Shows a quick "saved!" toast with a thumbnail of the new entry.
@@ -572,20 +572,23 @@ persistentDataPath/Gallery/

 ## 12. Capture Pipeline

+With the RT-paper-rig, capture has no setup phase. The RT is already the final image at all times.
+
 ```
 [Capture button or Next button]
        │
        ▼
-ICaptureService.CaptureAsync(artCamera, paperBg)
+ICaptureService.CaptureAsync()
        │
-        ├─ Allocate RenderTexture (2048×2048, ARGB32)
-        ├─ artCamera.targetTexture = rt
-        ├─ Force render (artCamera.Render())
-        ├─ ReadPixels into Texture2D
-        ├─ Composite paperBg underneath (single shader pass or CPU blend)
-        ├─ Encode PNG (Texture2D.EncodeToPNG)
-        ├─ Release RT + temp texture
-        └─ return byte[]
+        ├─ rt = _paperRig.Surface             (already populated each frame)
+        ├─ prev = RenderTexture.active
+        ├─ RenderTexture.active = rt
+        ├─ tex = new Texture2D(rt.width, rt.height, RGBA32, false)
+        ├─ tex.ReadPixels(full rect, 0, 0); tex.Apply()
+        ├─ RenderTexture.active = prev
+        ├─ bytes = tex.EncodeToPNG()          (on worker via UniTask.RunOnThreadPool)
+        ├─ Object.Destroy(tex)
+        └─ return bytes
        ▼
 IGalleryService.SaveAsync(bytes, templateId)
        │
@@ -599,8 +602,10 @@ EventBus.Publish(new ArtworkSavedSignal(dto))

 Notes:

- HUD never appears in capture because `ArtCamera` only renders the `Artwork` layer.
- Paper background can either be already present in the scene (cheap) or composited at capture time (lets the same drawing be saved with different papers).
+- HUD never appears in capture because the HUD is on `UICamera` / Canvas — it is physically in a different render path. The RT only ever sees `ArtCamera`'s output.
+- Paper background is a sprite parented under `IPaperRig.PaperRoot` and is rendered into the RT every frame — already baked in.
+- Saved PNGs are byte-comparable across devices because the RT dimensions and ArtCamera matrix never depend on screen size.
+- `CaptureAsync` is safe to call repeatedly — no camera state is ever mutated.

 ---

@@ -726,6 +731,7 @@ Every folder under `Code/` is its own `.asmdef`. References follow the layer rul
 | `Darkmatter.Services.Capture` | `Services/Capture/` | `Darkmatter.Core` |
 | `Darkmatter.Features.MainMenu` | `Features/MainMenu/` | `Darkmatter.Core`, Libs |
 | `Darkmatter.Features.DrawingCatalog` | `Features/DrawingCatalog/` | `Darkmatter.Core`, Libs |
+| `Darkmatter.Features.Paper` | `Features/Paper/` | `Darkmatter.Core`, `Lib.Installers` |
 | `Darkmatter.Features.ShapeBuilder` | `Features/ShapeBuilder/` | `Darkmatter.Core`, Libs |
 | `Darkmatter.Features.Coloring` | `Features/Coloring/` | `Darkmatter.Core`, `Lib.CommandStack` |
 | `Darkmatter.Features.History` | `Features/History/` | `Darkmatter.Core`, `Lib.CommandStack` |
@@ -1101,11 +1107,13 @@ Toddler-mode error UI:
 | Class | Layer | Asmdef |
 |---|---|---|
 | `IDrawingTemplate`, `ShapePieceDTO`, `ColorRegionDTO` | Core | `Darkmatter.Core` |
+| `IPaperRig`, `IArtInputBridge` | Core | `Darkmatter.Core` |
 | `ICommand`, `IUndoStack` | Core | `Darkmatter.Core` |
 | `BoundedUndoStack` | Libs | `Darkmatter.Lib.CommandStack` |
 | `AddressableAssetProviderService` | Services | `Darkmatter.Services.Assets` |
 | `FileGalleryService` | Services | `Darkmatter.Services.Gallery` |
 | `RenderTextureCaptureService` | Services | `Darkmatter.Services.Capture` |
+| `PaperRig`, `ArtInputBridge`, `PaperRigModule` | Features | `Darkmatter.Features.Paper` |
 | `ColoringController`, `PaintRegionCommand` | Features | `Darkmatter.Features.Coloring` |
 | `ShapeBuilderController`, `ShapePieceView` | Features | `Darkmatter.Features.ShapeBuilder` |
 | `HistoryController` | Features | `Darkmatter.Features.History` |
@@ -1185,17 +1193,34 @@ public interface IGalleryService {
 ```

 #### `ICaptureService` *(Core/Capture)*
-Snapshots the artwork camera to a PNG blob.
+Snapshots the paper RT to a PNG blob. No arguments — dimensions and content come from `IPaperRig.Surface`.
 ```csharp
 public interface ICaptureService {
-    UniTask<byte[]> CaptureAsync(
-        Camera artCamera,
-        Sprite paperBackground,
-        int width = 2048,
-        int height = 2048);
+    UniTask<byte[]> CaptureAsync();
 }
 ```

+#### `IPaperRig` *(Core/Paper)*
+Shared art rig. The single source of truth for everything that lives in the drawing world.
+```csharp
+public interface IPaperRig {
+    Camera ArtCamera { get; }              // offscreen, targetTexture = Surface
+    RenderTexture Surface { get; }         // 2048×2048 ARGB32 — the paper itself
+    Transform PaperRoot { get; }           // parent of regions/pieces/paper bg
+    Vector2 DesignSize { get; }            // world units, e.g. (20, 20)
+    Rect DesignRect { get; }               // centered on origin
+}
+```
+
+#### `IArtInputBridge` *(Core/Paper)*
+Converts screen-space pointer coords to art-world coords inside the RT.
+```csharp
+public interface IArtInputBridge {
+    bool TryScreenToArtWorld(Vector2 screenPos, out Vector2 artWorldPos);
+}
+```
+Returns `false` when the pointer is outside the displayed RawImage rect (toddler tapped the HUD or backdrop). Every art-world raycast goes through this.
+
 #### `IProgressionService` *(Core/Progression)*
 Tracks which templates the child has completed and what they last opened.
 ```csharp
@@ -1412,6 +1437,77 @@ public sealed class ShapePieceFactory {

 ---

+### 32.5b Feature — `Paper`
+
+The shared art rig — RT, offscreen camera, screen↔world bridge. Every other feature in the ColorBook scene resolves `IPaperRig` and `IArtInputBridge` from DI and never touches `Screen.*` or `Camera.*` directly.
+
+#### `PaperRig : MonoBehaviour, IPaperRig` *(Rig)*
+Scene-bound component placed on a GameObject in `ColorBook.unity`. Owns the RT lifecycle.
+```csharp
+// inspector fields:
+//   Camera _artCamera                  (Orthographic, aspect=1, fixed ortho size)
+//   Transform _paperRoot               (parent of regions/pieces)
+//   Vector2  _designSize = (20, 20)    (world units; matches 2048×2048 at PPU=100)
+//   int      _surfaceSize = 2048       (RT side length, square)
+
+public sealed class PaperRig : MonoBehaviour, IPaperRig {
+    public Camera ArtCamera => _artCamera;
+    public RenderTexture Surface => _surface;
+    public Transform PaperRoot => _paperRoot;
+    public Vector2 DesignSize => _designSize;
+    public Rect DesignRect => new(-_designSize / 2f, _designSize);
+}
+```
+- **Awake:** allocate `_surface = new RenderTexture(_surfaceSize, _surfaceSize, 0, ARGB32) { name = "PaperSurface" };` then `_surface.Create()` and `_artCamera.targetTexture = _surface; _artCamera.aspect = 1f; _artCamera.orthographicSize = _designSize.y / 2f;`.
+- **OnDestroy:** `_surface.Release(); Object.Destroy(_surface);`.
+- **No update logic** — the camera renders every frame automatically because `targetTexture` is set.
+- **Important:** `_artCamera`'s `orthographicSize` and `aspect` are set once and never touched again. The RT contents are deterministic.
+
+#### `ArtInputBridge : MonoBehaviour, IArtInputBridge` *(Input)*
+Lives on the same UI Canvas as the paper `RawImage`.
+```csharp
+// inspector fields:
+//   RawImage _paperImage              (the on-screen paper)
+//   RectTransform _paperRect          (== _paperImage.rectTransform)
+//   Camera _uiCamera                  (Canvas event camera)
+//   IPaperRig _rig                    (injected via VContainer + IInjectable, or resolved in Start)
+
+public bool TryScreenToArtWorld(Vector2 screenPos, out Vector2 artWorldPos) {
+    if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(
+            _paperRect, screenPos, _uiCamera, out var local)) {
+        artWorldPos = default; return false;
+    }
+    var rect = _paperRect.rect;
+    var uv = new Vector2(
+        (local.x - rect.xMin) / rect.width,
+        (local.y - rect.yMin) / rect.height);
+    if (uv.x < 0 || uv.x > 1 || uv.y < 0 || uv.y > 1) {
+        artWorldPos = default; return false;
+    }
+    artWorldPos = _rig.ArtCamera.ViewportToWorldPoint(uv);
+    return true;
+}
+```
+- Returns `false` when the toddler tapped outside the RawImage (HUD button area, backdrop, off-screen).
+- Used by every feature that does world-space picking — `Coloring`, `ShapeBuilder`, and any future feature like stickers.
+
+#### `PaperRigModule : MonoBehaviour, IServiceModule` *(Installers)*
+Scene-scoped installer. Dragged onto `ColorBookLifetimeScope._installers[]`.
+```csharp
+// inspector fields:
+//   PaperRig _rig
+//   ArtInputBridge _bridge
+
+public void Register(IContainerBuilder builder) {
+    builder.RegisterInstance<IPaperRig>(_rig);
+    builder.RegisterInstance<IArtInputBridge>(_bridge);
+}
+```
+- Registers as `Instance` because both are MonoBehaviours already in the scene.
+- Lifetime is implicitly tied to the scene (Unity destroys them on unload).
+
+---
+
 ### 32.6 Feature — `Coloring`

 #### `ColoringStateRepository` *(Repository)*
@@ -1453,7 +1549,15 @@ public sealed class ColorRegionView : MonoBehaviour {
 ```

 #### `ColoringInputBinder` *(Systems)* — `IStartable, IDisposable`
-Subscribes to `IInputReader.PointerDown`, raycasts on the `Artwork` layer mask, calls `ColoringController.PaintRegion(view)` on hit.
+Subscribes to `IInputReader.PointerDown`. On each tap:
+1. `_bridge.TryScreenToArtWorld(screenPos, out var artPos)` — bail if outside the paper.
+2. `Physics2D.OverlapPoint(artPos, _artworkMask)` against the `Artwork` layer.
+3. If hit, `ColoringController.PaintRegion(hit.GetComponent<ColorRegionView>())`.
+
+```csharp
+// fields: IInputReader _input, IArtInputBridge _bridge, IColoringController _coloring, LayerMask _artworkMask
+```
+Note: `_bridge` is the same instance the entire scene uses — no per-feature coordinate math.

 #### `PaintRegionCommand` *(Commands)*
 Source in section 23. Holds `view`, `fromColor`, `toColor`, `bus`. Symmetrical execute/undo.
@@ -1503,14 +1607,16 @@ Wires controller `StateChanged` ↔ view enable/disable; view click events → c
 #### `CaptureController` *(Systems)*
 The orchestrator behind the "Capture" button. Stateless other than guarding against concurrent captures.
 ```csharp
-// fields: ICaptureService _capture, IGalleryService _gallery, IEventBus _bus, ColorBookSceneRefs _refs
+// fields: ICaptureService _capture, IGalleryService _gallery, IEventBus _bus
 public sealed class CaptureController {
    public bool IsCapturing { get; }
-    public UniTask<SavedArtworkDTO> CaptureCurrentAsync(string templateId, Sprite paperBg);
+    public UniTask<SavedArtworkDTO> CaptureCurrentAsync(string templateId);
 }
 // pub: ArtworkCapturedSignal (mid-flow), ArtworkSavedSignal (post-save)
 ```
+- **Flow:** `_capture.CaptureAsync()` → `_gallery.SaveAsync(bytes, templateId)` → publish signals.
 - **Concurrency:** sets `IsCapturing = true` on entry; UI binds button enabled to `!IsCapturing` to prevent double-tap.
+- **No camera or sprite args** — capture reads `IPaperRig.Surface` directly inside the service.

 #### `CaptureButtonPresenter` *(UI)*
 Wires button click → `CaptureController.CaptureCurrentAsync`. Disables button while in progress. Shows toast on `ArtworkSavedSignal`.
@@ -1641,8 +1747,11 @@ Implemented as `ScriptableObject` per feature so scopes can drag them in the ins
 | `ColoringController` | Feature | Region spawn + paint cmd | undo, state, factory, bus |
 | `ColorRegionView` | Feature | Region sprite MB | — |
 | `PaintRegionCommand` | Feature | Undoable paint | view, bus |
+| `PaperRig` | Feature | RT + ArtCamera owner | — |
+| `ArtInputBridge` | Feature | Screen→art-world picking | rig, raw image, ui cam |
+| `PaperRigModule` | Feature | DI registration | rig, bridge |
 | `HistoryController` | Feature | Undo/redo facade | undo stack, bus |
-| `CaptureController` | Feature | Capture+save orchestration | capture svc, gallery, bus, refs |
+| `CaptureController` | Feature | Capture+save orchestration | capture svc, gallery, bus |
 | `ColorBookFlowController` | Feature | Scene FSM | bus, catalog, builder, coloring, capture, progression |
 | `GalleryPresenter` | Feature | Art book listing | gallery, share, view, bus |
 | `BoundedUndoStack` | Lib | Capped undo store | — |
@@ -1650,7 +1759,7 @@ Implemented as `ScriptableObject` per feature so scopes can drag them in the ins
 | `Fsm<TState>` | Lib | Generic FSM | — |
 | `AddressableAssetProviderService` | Service | Addressables wrapper | — |
 | `FileGalleryService` | Service | Gallery file IO | paths, thumb gen, bus |
-| `RenderTextureCaptureService` | Service | PNG render | — |
+| `RenderTextureCaptureService` | Service | PNG render from rig.Surface | paper rig |
 | `JsonPersistenceService` | Service | Settings/progression IO | — |
 | `SceneService` | Service | Async scene loads | — |
 | `AudioService` | Service | SFX playback | assets |