Factorio.com|Forums|Wiki|Mod Portal|API Docs Prototype|Runtime|Auxiliary

# Factorio Prototype Docs Version 2.0.7

## FogMaskShapeDefinition :: struct

## Properties

- default
- sorted

rect | :: SimpleBoundingBox |
falloff optional | :: float |

rect | :: SimpleBoundingBox |
falloff optional | :: float |

## Properties

### rect :: SimpleBoundingBox

### falloff :: float optional

Default: `1`

Type used in

- RailsFogMaskDefinitions::north
- RailsFogMaskDefinitions::east
- RailsFogMaskDefinitions::south
- RailsFogMaskDefinitions::west
- RocketSiloRocketPrototype::rocket_fog_mask