A follow-up to last week's poi math video. This one tells us how to determine the size of the hand path for poi when we're graphing out patterns using parametric equations. Includes properties of wavelength and amplitude among other nifty math concepts.

techblog218.mp4

People frequently reference the math behind poi on many forums and groups, but it can seem a little daunting to folks that don't have that kind of background. Here's an attempt to level the playing field. A lot of this will be review for the more mathematically inclined folks out there, but for those who aren't, hopefully this will give you the Cliff's Notes as to some of the math we use to describe flowers and the like and make it a little bit more digestible. If you like this, please leave me feedback as I've got plans in my mind to do a whole series of these kinds of videos :)

techbog216.mp4

Okay, I'm really torn on this one having seen the video now. The flower described to me as antispin in the comments section of the last video had an upbeat between two petals and downbeat between two other petals. What I'm performing here is the first geometry I could find that conformed to the shape, but watching it now I think it's just a 2-beat corkscrew performed as a floor-plane flower. The "spiral" based flowers I played with before all had the motion of the poi head oriented at all times on a plane perpendicular to the orientation of the hand.

techblog103.mp4