Fog of War - theripper93/canvas3dcompendium GitHub Wiki

Fog Exploration

If you have both "Token Vision" and "Fog Exploration" enabled in the scene settings, 3D Canvas will mirror the 2D Canvas fog. This means that fog bounds are solely determined by walls in the scene.

If you have "Token Vision" Enabled but "Fog Exploration" disabled, the whole scene will be revealed but walls and geometry (if set in the scene settings) will prevent tokens from seeing each other if blocked by obstacles.

Limitations

Due to the high performance impact of fog exploration in 3D the update of the fog shader is not constant, that means that if you move a token, the fog will be updated once the movement is complete.

The fog is not 3D! Keep in mind that fog exploration is 2 Dimensional, this means that exploring any space will explore the full vertical space of that location. Currently there are no plans for a fully 3D Fog Exploration, and since not even a videogame comes in mind that implements such a thing, i doubt that a webbrowser would be able to handle something like that any time soon.

Manual Fog of War

If you wish to have some semblance of a "3D Fog", you can use Box Measure templates to create Fog of War boxes, this will mimic the "use a piece of paper to cover the map" table experience, but in 3D. To achieve this, simply place a Box Measured Template, open it's configuration and enable "Is Fog of War Box?". Players will see this box as solid black (GMs will see it semi transparent) and moving the camera inside the box will obscure the view. You can then move or remove these boxes during the exploration.