circus() - just a simple circle function to generate circle info for plotting

give circus a radius and it returns circumference coordinates to plot

CIRCUS

[xp yp] = circus(r)
[xp yp] = circus(r,xc,yc)
[xp yp zp] = circus(r,xc,yc,zc)

Description

[xp yp] = circus(r) takes a radius 'r' and returns vectors xp and yp corresponding to the x,y boundary points of a circle centered at 0

[xp yp] = circus(r,xc,yc) takes a radius 'r' and the x,y coordinate-center positions 'xc' and 'yc' and returns vectors xp and yp corresponding to the x,y boundary points of a circle centered at xc,yc

[xp yp zp] = circus(r,xc,yc,zc) same as circus(r,xc,yc) and includes z-axis coordinates