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# Factorio Prototype Docs Version 2.0.7

## BoilerPictures :: struct

## Properties

- default
- sorted

structure | :: Animation |
patch optional | :: Sprite | Drawn above the `structure`, in the "higher-object-under" RenderLayer. [...]
Drawn above the `structure`, in the "higher-object-under" RenderLayer. [...]
fire optional | :: Animation | Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
fire_glow optional | :: Animation | Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]

structure | :: Animation |
fire optional | :: Animation | Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
fire_glow optional | :: Animation | Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. [...]
patch optional | :: Sprite | Drawn above the `structure`, in the "higher-object-under" RenderLayer. [...]
Drawn above the `structure`, in the "higher-object-under" RenderLayer. [...]

## Properties

### structure :: Animation

### patch :: Sprite optional

Drawn above the `structure`, in the "higher-object-under" RenderLayer. May be useful to correct problems with neighboring pipes overlapping the structure graphics.

### fire :: Animation optional

Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. The animation alpha can be controlled by the energy source light intensity, depending on `fire_flicker_enabled`.

The secondary draw order of this is higher than the secondary draw order of `fire_glow`, so this is drawn above `fire_glow`.

### fire_glow :: Animation optional

Animation that is drawn on top of the `structure` when `burning_cooldown` is larger than 1. The animation alpha can be controlled by the energy source light intensity, depending on `fire_glow_flicker_enabled`.

The secondary draw order of this is lower than the secondary draw order of `fire`, so this is drawn below `fire`.

Type used in

- BoilerPictureSet::north
- BoilerPictureSet::east
- BoilerPictureSet::south
- BoilerPictureSet::west