blink_fog_3d v1.8

Blink Fog 3D

blink_fog_3d is a tool for rendering 4d noise through a render camera with lots of additional user options to change the look and feel of the noise. The advantage of this blinkscript versus traditional 3d noise setups is the noise is rendered entirely in blinkscript and doesn't require the user to place a box or cards of noise in the scene. The node has a built in depth ramp so you can choose what depth from the camera the noise is visible and choose how the noise falls off as it gets closer to the camera (useful for making fast moving wispies). The 4d aspect of the noise allows you to animate the seed of the noise without having a visible direction to the noise (xyz) which can be used to make the noise look like smoke or steam. A depth input can also be used to apply holdouts to the noise for use as a procedural fog generator. Note that there is an 'invert depth' checkbox to use 1/z. The samples per ray knob is the general quality slider, the more samples you provide, the less noise you get but the slower the node becomes. The node is pretty fast if you have a fast gpu and a $GUI expression can be used on the samples per ray knob to make it more responsive locally.

Thank you to Eliot Eshelman for the 4D Perlin simplex noise function (https://github.com/BogdanDenis/OpenGL/blob/master/simplexnoise.cpp), as well as Mads Hagbarth for a reference conversion.

Usage 

You can add the `src/python` directory to your `NUKE_PATH` to add the gizmo to your node menu or simply open the example file to find the group node.

New in Version 1.8

• added optional exponential falloff to sphere, box, and plane ramps

New in Version 1.7

• a new 'spherical ramp' allows you to create a spherical ramp for the noise
• a new 'box ramp' allows you to create a box of noise

New in Version 1.6

• the 'y ramp' is now a 'planar ramp'
  • this allows you to orient the noise along any axis
  • you can translate the plane of noise

New in Version 1.5

• a new 'y ramp' knob allows you to vary the noise density along the y-axis in worldspace

New in Version 1.4

• this is a patch release v1.3.1 that fixes a bug with the deep (proxy) mode not switching to the correct kernel
  • Nukepedia does not let me version up to 1.3.1 :(

New in Version 1.3

• Deep support!
  • Use the 'deep_holdout' input along with the following to work with deep data
    • Use the 'holdout mode' 'deep (proxy)' for fast deep that will work for most scenarios, but can have artifacts
    • Use the 'holdout mode' 'deep (full)' for slower but completely accurate deep
    • Use the 'output deep' checkbox to output deep data without holdouts
• Overscan
  • Use the 'overscan' knob to specify any overscan

MIT License Copyright (c) 2024 Owen Bulka Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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