Lumen Meter - A Tool For Measuring Local Brightness
Simply drop the tool in your level or attach it to an existing actor and start measuring local brightness levels. Auto-configuration, no hassle.
Measures the local scene's brightness as either a raw value or a normalised value from 0 - 1;
We measure the final scene after it renders - this takes into account global lighting, static lighting, dynamic lighting and shadows;
No need to trace individual lights in the scene;
Samples the local scene and measures the lighting realistically as it rendered;
Lumen Meter is plugin agnostic, because we sample the brightness as a post-process, it doesn't matter how it was built;
Works with both dynamic and static lighting;
Overview
The Unreal Engine Lumen Meter is a convenient drop in tool for measuring light levels across your game. Instead of clumsily measuring distances from light sources, we instead take a snapshot of the local scene after all of the level lighting, dynamic lighting, shadows and post-processing has taken place and then measure the brightness to give you an accurate measure of the brightness level that the player sees.
The Lumen Meter dynamically calibrates to your level so you don't need to set any static brightness bounds, it just works out of the box. It can dynamically synchronise with other Lumen Meters in your level to give you a dynamic a consistent normalised measure across an area.
With two options you can measure the brightness of a localised area by direction or you can choose the more accurate omnidirectional mode which takes 5 different measurements and give you the most realistic score.
Features
Dynamic Calibration: The tool automatically detects light levels in the scene for calculating normalised values, you don't need to set upper and lower bounds manually;
Synchronisation: Each Lumen Meter can synchronise light levels across the map or by distance to give you an accurate normalised value;
Plug & Play: No setup is needed, simply drop the actor into the level and it'll start reading the brightness level, or attach it to an existing actor to get light levels as you move;
Realtime Capture: Choose an interval for realtime capture to continuously read the light level, or call it as you need it;
Works in Editor: The tool works in the editor, you don't need to run the game to see the light levels;
Two Modes: There are two modes of operation. Directional capture is a top-down measurement of the scene, it's fast and perfect for real time games. The Omnidirectional mode captures the scene as a 5-dimensional cube to provide the most accurate measurement of brightness, use this when it really matters.
Blueprint: Delivered as a blueprint, you can add and change features as needed;