Math for VSFX

Updated on March 1  2024

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copyright © Deborah R. Fowler



Cos and ArcCos

Deborah R. Fowler



Cos and Arc Cos and also Arc Tan

Posted on May 24  2016
Updated on March 11  2017
Updated on Dec 31  2022 adding atan



There are some interesting things you can do with cos and acos.

This person on youtube produced some interesting visualizations (thang010146)
In particular, the door for limited space demostrated acos beautifully.

https://www.youtube.com/watch?v=jWxtaYE_5n0

I have created a corresponding hipnc file called doorForLimitedSpaceH15.hipnc
and an improved version that takes into account the "ball bearings" doorForLimitedSpaceH15Improved.hipnc

MISSING IMAGE

There are more application of this - see my section on pointWrangle nodes, in particular the pointWrangle acos example.

You can use these similarly with sin and tan, not just cos. Here is a longer explanation of atan.



https://www.youtube.com/watch?v=stndScVpWBw&t=21s

If your trig is a little rusty, there are a few starter videos