Raymarching in TouchDesigner tutorial. Part I – Defining a geometry

Github repo for this series https://github.com/exsstas/Raymarching-in-TD

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Helpful resources I mentioned in the tutorial:
Short theory about raymarching https://www.youtube.com/watch?v=Cp5WWtMoeKg
Geometry functions from Inigo Quilez http://iquilezles.org/www/articles/distfunctions/distfunctions.htm
Alternative SDF library http://mercury.sexy/hg_sdf/