Light source now stays in place when rotating a model in the viewer.

web/src/main/kotlin/world/phantasmal/web/core/rendering/RenderContext.kt

@@ -13,7 +13,8 @@ open class RenderContext(
         groundColor = 0x505050,
         intensity = 1.0
     )
-    private val lightHolder = Group().add(light)
+
+    val lightHolder = Group().add(light)
 
     var width: Int = 0
     var height: Int = 0

web/src/main/kotlin/world/phantasmal/web/externals/three/three.kt

@@ -119,6 +119,8 @@ external class Quaternion(
     var z: Double
     var w: Double
 
+    fun copy(q: Quaternion): Quaternion
+
     fun setFromEuler(euler: Euler): Quaternion
 
     /**

web/src/main/kotlin/world/phantasmal/web/viewer/rendering/MeshRenderer.kt

@@ -52,6 +52,8 @@ class MeshRenderer(
     override fun render() {
         animation?.mixer?.update(clock.getDelta())
 
+        context.lightHolder.quaternion.copy(context.camera.quaternion)
+
         super.render()
 
         animation?.let {