3 files changed, 13 insertions, 2 deletions
diff --git a/libdimension/dimension/camera.h b/libdimension/dimension/camera.h
index c3ad65b..67fffc0 100644
--- a/libdimension/dimension/camera.h
+++ b/libdimension/dimension/camera.h
@@ -44,8 +44,9 @@ struct dmnsn_camera {
 
   dmnsn_matrix trans; /**< Transformation matrix. */
 
-  /** Generic pointer for camera info. */
-  void *ptr;
+  void *ptr; /**< @internal Generic pointer for camera info. */
+
+  dmnsn_refcount *refcount; /**< @internal reference count. */
 };
 
 /**
diff --git a/libdimension/dimension/refcount.h b/libdimension/dimension/refcount.h
index 14f31ab..9d2c304 100644
--- a/libdimension/dimension/refcount.h
+++ b/libdimension/dimension/refcount.h
@@ -30,6 +30,7 @@
 #define DMNSN_INCREF(obj) ((void)++(*(obj)->refcount))
 
 /**
+ * @internal
  * Decrement a reference count.
  * @param[in,out] object  The reference-counted object to release.
  * @return Whether the object is now garbage.
@@ -42,6 +43,7 @@
 typedef unsigned int dmnsn_refcount;
 
 /**
+ * @internal
  * Create a reference count.
  * @return A new reference counter, initialized to zero (a "borrowed" reference,
  *         which will be garbage-collected the first time it is deleted).
@@ -49,6 +51,7 @@ typedef unsigned int dmnsn_refcount;
 dmnsn_refcount *dmnsn_new_refcount(void);
 
 /**
+ * @internal
  * Delete a reference count.  Raises an error if the reference count wasn't
  * zero.
  */
diff --git a/libdimension/dimension/scene.h b/libdimension/dimension/scene.h
index ffe5fb3..b726a77 100644
--- a/libdimension/dimension/scene.h
+++ b/libdimension/dimension/scene.h
@@ -100,6 +100,13 @@ void dmnsn_initialize_scene(dmnsn_scene *scene);
 void dmnsn_scene_set_canvas(dmnsn_scene *scene, dmnsn_canvas *canvas);
 
 /**
+ * Set the camera for a scene.
+ * @param[in,out] scene   The scene for which to set the canvas.
+ * @param[in]     camera  The camera to set.
+ */
+void dmnsn_scene_set_camera(dmnsn_scene *scene, dmnsn_camera *camera);
+
+/**
  * Add an object to a scene.
  * @param[in,out] scene   The scene to which to add the object.
  * @param[in]     object  The object to add.