From 5640c153f3e9e1f6119aaef1b7b1ccb38ec147d4 Mon Sep 17 00:00:00 2001
From: Erik <erik.nihlen@gmail.com>
Date: Fri, 10 Apr 2026 20:24:29 +0200
Subject: [PATCH] feat(app): extract ICamera interface from OrbitCamera

Introduce ICamera (View, Projection, Aspect) and make OrbitCamera implement
it. TerrainRenderer.Draw and StaticMeshRenderer.Draw now accept ICamera,
widening the call-site contract while leaving all runtime behavior unchanged.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/AcDream.App/Rendering/ICamera.cs            | 10 ++++++++++
 src/AcDream.App/Rendering/OrbitCamera.cs        |  2 +-
 src/AcDream.App/Rendering/StaticMeshRenderer.cs |  2 +-
 src/AcDream.App/Rendering/TerrainRenderer.cs    |  2 +-
 4 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 src/AcDream.App/Rendering/ICamera.cs

diff --git a/src/AcDream.App/Rendering/ICamera.cs b/src/AcDream.App/Rendering/ICamera.cs
new file mode 100644
index 0000000..3aeaf98
--- /dev/null
+++ b/src/AcDream.App/Rendering/ICamera.cs
@@ -0,0 +1,10 @@
+using System.Numerics;
+
+namespace AcDream.App.Rendering;
+
+public interface ICamera
+{
+    Matrix4x4 View { get; }
+    Matrix4x4 Projection { get; }
+    float Aspect { get; set; }
+}
diff --git a/src/AcDream.App/Rendering/OrbitCamera.cs b/src/AcDream.App/Rendering/OrbitCamera.cs
index 95f9977..43f2c96 100644
--- a/src/AcDream.App/Rendering/OrbitCamera.cs
+++ b/src/AcDream.App/Rendering/OrbitCamera.cs
@@ -2,7 +2,7 @@ using System.Numerics;
 
 namespace AcDream.App.Rendering;
 
-public sealed class OrbitCamera
+public sealed class OrbitCamera : ICamera
 {
     public Vector3 Target { get; set; } = new(96, 96, 0);  // center of a 192x192 landblock
     public float Distance { get; set; } = 300f;
diff --git a/src/AcDream.App/Rendering/StaticMeshRenderer.cs b/src/AcDream.App/Rendering/StaticMeshRenderer.cs
index 12b7a8b..424eb8b 100644
--- a/src/AcDream.App/Rendering/StaticMeshRenderer.cs
+++ b/src/AcDream.App/Rendering/StaticMeshRenderer.cs
@@ -73,7 +73,7 @@ public sealed unsafe class StaticMeshRenderer : IDisposable
         };
     }
 
-    public void Draw(OrbitCamera camera, IEnumerable<WorldEntity> entities)
+    public void Draw(ICamera camera, IEnumerable<WorldEntity> entities)
     {
         _shader.Use();
         _shader.SetMatrix4("uView", camera.View);
diff --git a/src/AcDream.App/Rendering/TerrainRenderer.cs b/src/AcDream.App/Rendering/TerrainRenderer.cs
index c82eda0..11cd851 100644
--- a/src/AcDream.App/Rendering/TerrainRenderer.cs
+++ b/src/AcDream.App/Rendering/TerrainRenderer.cs
@@ -55,7 +55,7 @@ public sealed unsafe class TerrainRenderer : IDisposable
         _landblocks.Add(gpu);
     }
 
-    public void Draw(OrbitCamera camera)  // ICamera in Task 5
+    public void Draw(ICamera camera)
     {
         _shader.Use();
         _shader.SetMatrix4("uView", camera.View);