From 804b83c649bd27704ed64fa914a1941e496c1070 Mon Sep 17 00:00:00 2001
From: Pascal Grittmann <grittmann@cg.uni-saarland.de>
Date: Thu, 28 Mar 2024 16:43:14 +0100
Subject: [PATCH] expose per-mesh emitters

---
 SeeSharp/Scene.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/SeeSharp/Scene.cs b/SeeSharp/Scene.cs
index 1163ae9..107e4d6 100644
--- a/SeeSharp/Scene.cs
+++ b/SeeSharp/Scene.cs
@@ -203,6 +203,13 @@ public Emitter QueryEmitter(SurfacePoint point) {
         return emitter;
     }
 
+    public FrozenDictionary<int, Emitter> GetMeshEmitters(Mesh mesh) {
+        // TODO do we even want to support only _some_ triangles of a mesh being emissive?
+        if (!meshToEmitter.TryGetValue(mesh, out var meshEmitters))
+            return null;
+        return meshEmitters;
+    }
+
     /// <param name="emitter">An emitter object</param>
     /// <returns>Index of this emitter in the <see cref="Emitters"/> list</returns>
     public int GetEmitterIndex(Emitter emitter) => emitterToIdx[emitter];