# OpenSpec Change: enterprise-gaming-r3f-camera

- **Change ID**: enterprise-gaming-r3f-camera
- **Package**: `@suaveplan/r3f-camera`
- **Category**: gaming/devices
- **Target path**: `gaming/devices/r3f-camera`
- **Status**: PROPOSED
- **Date**: 2026-04-24

---

## Summary

Deliver `@suaveplan/r3f-camera` on the genesis branch from scratch at enterprise quality. The package provides advanced camera controls for React Three Fiber: first-person, third-person follow, cinematic dolly/orbit, top-down, and isometric modes. Each mode is a composable `CameraRig` that drives the Three.js camera; smooth transitions between modes use spring interpolation; a `CameraShake` component applies procedural trauma-based shake. `useCamera()` exposes the active rig and allows programmatic transitions. Genesis adds structured errors, and 100% coverage.

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## Available workspace deps

`@suaveplan/error`, `@suaveplan/types`, `@suaveplan/timing`, react, `@react-three/fiber`, `@react-three/drei`, three.

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## Public API surface

```ts
type CameraMode = 'first-person' | 'third-person' | 'cinematic' | 'top-down' | 'isometric'

function CameraRig(props: CameraRigProps): JSX.Element
// mode, target, offset, smoothing, fov

function CameraShake(props: CameraShakeProps): JSX.Element
// trauma, decay, frequency, maxAngle, maxOffset

function useCamera(): CameraContext
// mode, setMode(mode), addTrauma(amount), lookAt(target)
```

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## File layout

```text
gaming/devices/r3f-camera/
  package.json / tsconfig.json / vitest.config.ts
  src/
    index.ts / error-codes.ts
    types/common.ts + md
    rigs/
      first-person/ (ts + md + test + index)
      third-person/ (ts + md + test + index)
      top-down/ (ts + md + test + index)
    context/camera-provider.tsx + md + test
    hooks/use-camera.ts + md + test
    components/
      CameraRig/ (tsx + md + test + stories + index)
      CameraShake/ (tsx + md + test + stories + index)
  tests/integration.test.ts
```