almostIdentityFn

function

almostIdentityFn

RayTK

v0.36

A mapping function that can change a value only when it’s zero or very close to it, where it replaces the value with a small constant.

Then, rather than doing a conditional branch which introduces a discontinuity, you can smoothly blend your value with your Threshold.

This is based on Inigo Quilez’s article.

Parameters

• :
• Threshold: The value above which things will be unchanged.
• Base Value: The constant value to use when the input is zero.