From 7d26284fbd9cff16de0cbfc78b94fc0451120e8b Mon Sep 17 00:00:00 2001
From: Diego Marcos Segura <diego.marcos@gmail.com>
Date: Mon, 9 Jun 2025 15:58:12 -0700
Subject: [PATCH] Traverse object3D hierarchy looking for SplatMesh to create
 an implcit SparkRenderer (fix #38)

---
 src/SparkRenderer.ts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/SparkRenderer.ts b/src/SparkRenderer.ts
index 6b98b93..7e25256 100644
--- a/src/SparkRenderer.ts
+++ b/src/SparkRenderer.ts
@@ -43,9 +43,20 @@ let hasSparkRenderer = false;
 
 let sparkRendererInstance: SparkRenderer;
 
+function containsSplatMesh(object3D) {
+  let hasSplatMesh = false;
+  if (object3D instanceof SplatMesh) {
+    return true;
+  }
+  object3D.traverse((child) => {
+    hasSplatMesh = hasSplatMesh || child instanceof SplatMesh;
+  });
+  return hasSplatMesh;
+}
+
 const sceneAdd = THREE.Scene.prototype.add;
 THREE.Scene.prototype.add = function (object) {
-  hasSplatMesh = hasSplatMesh || object instanceof SplatMesh;
+  hasSplatMesh = hasSplatMesh || containsSplatMesh(object);
   hasSparkRenderer = hasSparkRenderer || object instanceof SparkRenderer;
   sceneAdd.call(this, object);
   return this;