Redmaw: Updated descriptions and added example images.

2022-04-08T16:20:39Z

Updated descriptions and added example images.

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<div style="float:right; border-style:solid; padding:20px"><categorytree mode=pages hideroot=off>Noise</categorytree></div>

[[File:Perlin4DScalar_00_GUI.png|none|470px|Perlin 4D Scalar]]

==Overview==
This node generates Perlin noise and outputs the noise value as a scalar. The output value ranges between -0.5 and 0.5. This node has a Time parameter which allows the noise pattern to change over time. Here is an example of the noise pattern generated by the node:
{|
|-
| [[File:Perlin4DScalar_02_Top.gif|none|400px|Rendered top view of Perlin 4D scalar noise pattern.]] || [[File:Perlin4DScalar_03_Perspective.gif|none|400px|Render perspective view of the same Perlin 4D scalar used for displacement.]]
|}

This node requires a Get position, Get position in geometry, or Get position in texture function node to be assigned to its Main input so that the current render state knows where a sampled point is located in texture space. In the example below, the current frame number is converted to time based on the number of frames per second, then assigned to the Time parameter.
[[File:Perlin4DScalar_01_Nodes.JPG|none|800px|Node Network view of Perlin 4D Scalar with required node for position in texture space, and optional nodes to drive scale and seed values. In this example, the frame number is converted to time, then assigned to the Time paramater.]]

'''Settings:'''
*'''Name:''' This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Perlin 4D scalar nodes in a project.
*'''Enable:''' When checked, the node is active, and when unchecked the node is ignored.
*'''Time:''' The shader or function nodes assigned to this setting, sets the time value.
*'''Scale:''' This setting controls the overall scale of the noise pattern generated. Increasing the scale value makes it seem like the cells in the noise pattern are larger.
*'''Seed:''' The setting controls the noise pattern generated. Each seed value generates a slightly different pattern.

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[[Category:Noise]]

Perlin 4D Scalar - Revision history

Redmaw: Updated descriptions and added example images.