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diff --git a/indra/newview/llflycam.h b/indra/newview/llflycam.h
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+/**
+ * @file llflycam.h
+ * @brief LLFlycam class header file
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#pragma once
+
+#include "llcamera.h"
+#include "llquaternion.h"
+#include "v3math.h"
+
+class LLFlycam
+{
+public:
+
+    LLFlycam();
+
+    void setTransform(const LLVector3& position, const LLQuaternion& rotation);
+    void getTransform(LLVector3& position_out, LLQuaternion& rotation_out);
+
+    void setView(F32 view);
+    F32 getView() const { return mView; }
+
+    void setLinearVelocity(const LLVector3& velocity);
+    void setPitchRate(F32 pitch_rate);
+    void setYawRate(F32 yaw_rate);
+    void setZoomRate(F32 zoom_rate);
+
+    void integrate(F32 delta_time);
+
+protected:
+    LLVector3 mPosition;
+    LLVector3 mLinearVelocity;
+    LLQuaternion mRotation;
+    F32 mPitchRate { 0.0f };
+    F32 mYawRate { 0.0f };
+    F32 mZoomRate { 0.0f };
+    F32 mView { DEFAULT_FIELD_OF_VIEW };
+};