Logic Gadgets: Fog

Icon logic gadgets fog
Name of gadget Fog
Section Cameras & Lighting
Number of Tweak pages 2
Author LadylexUK, QuietlyWrong
Last updated 12 April 2019 [Beta]

Description

Few things can add to the moodiness of a setting than some fog, and this is the gadget you need to drop chunks of it into your Scene. There is a general all-pervading mistiness that you can access from the Sun & Sky gadget but all-too-often you need something extra, like that miasma hanging over a swampy area or a radial effect to signify that a hazard is poisonous, for example.

Example Tutorial (adapted from Media Molecule)

  1. Stamp a fog gadget into your scene.
  2. Tweak it.
  3. Select the Shape sub-menu tab.
  4. Make the fog a cube.
  5. Drag the walls of the cube out to make a nice big wall.
  6. Switch back to the Properties sub-menu tab of the fog gadget.
  7. Stamp a signal generator into your scene, near the fog gadget.
  8. Connect the signal generator’s signal output to the density input of the fog.
  9. Start time and watch the effect on the wall of fog as its density increases and decreases along with the signal generator’s output.

 

Tweak Menus

Click on arrows to reveal

Tweak Menu 1: Properties
fog1
  1. Tweak Menu page 1: Properties
  2. Colour
    2a. Input
    2b. Output
  3. Hue Cycle
    3a. Input
    3b. Output
  4. Density
    4a. Input
    4b. Output
  5. Noise Strength
    5a. Input
    5b. Output
  6. Noise Scale
    6a. Input
    6b. Output
  7. Noise Speed
    7a. Input
    7b. Output
  8. Glow
    8a. Input
    8b. Output
  9. Power
  1. Menu page indicator
  2. Colour
    As you’d expect you can select any colour for your fog. This will be more or less obvious depending on the density of the fog.
  3. Hue Cycle
    With this slider you can adjust the hue of the fog’s colour, like running through the spectrum from red to yellow to green to blue… It won’t do much for greyscale fog colour, as that has no colour saturation, so make sure you choose a suitable colour first. In setting up the fog’s initial colour you can’t reach any colours that are not available in the ‘Colour’ tweak, but it may be useful if you want to cycle the colours over time, perhaps as part of a day-night cycle.
  4. Density
    Adjust this slider to determine how thick the fog is – how much it obscures the elements that are within and beyond it.
  5. Noise Strength
    This is the first of three tweaks to change the ‘visual noise’ appearance of the fog. A low value leads to a more uniform appearance whereas higher values have more internal variation.
  6. Noise Scale
    The second of three tweaks to change the ‘visual noise’ in the fog – this one makes changes to size of the fog’s ‘particles’.
  7. Noise Speed
    The third of three tweaks to change the ‘visual noise’ in the fog – this one can be used to increase the amount of movement and animation roiling around in the fog cloud.
  8. Glow
    Like many things in Dreams, you can turn up the glow to give the fog an eerie luminescence.
  9. Power
    This is where you turn the gadget on/off.
Tweak Menu 2: Zone Size
fog2
  1. Tweak Menu page 2: Zone Size
  2. Shape
  3. Zone Size
    3a. Input
    3b. Output
  4. Zone Falloff
    4a. Input
    4b. Output
  5. Power
  1. Menu page indicator
  2. Shape
    Your fog areas can be spherical, cuboid or cylindrical – pick one here.
  3. Zone Size
    Here is where you can change the size of the fog area. The spherical form only has one dimension, as shown here, but the cuboid and cylinder can be stretched out along the main three axes. You can also resize the zone directly on-screen.
  4. Zone Falloff
    If you do or don’t want your fog to have a hard ‘edge’, a clearly defined boundary, you can change the size of the falloff zone, which is a volume around the outside where the fog thins down from normal density to nothing. The larger this is, the more gradual the change.
  5. Power
    This is where you turn the gadget on/off.

Lex Tips

Useful Tutorials

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