You spin me right round (iterations)

you_spin_me_right_round.sh

# Tweet: https://twitter.com/josh_cheek/status/1137422115181871104
# Video: https://vimeo.com/341108197

# 1
node -e h=$LINES,w=$COLUMNS,p=process,t=0,T=6.28,s='""
   p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
   setInterval(()=>{++t;p.stdout.write(`\x1b[2J`)
     l=s.length+5
     r=l/T
     x=i=>Math.round(Math.cos(T*(i-t)/l)*r*2+r*2)+1
     y=i=>Math.round(Math.sin(T*(i-t)/l)*r+r)+1
     p.stdout.write(s.split(/\b/).map(
       (w,i)=>w.split("").map(c=>`\x1b[9${i%7+1}m`+c)
     ).flat().map((c,i)=>`\x1b[${y(i)};${x(i)}H`+c).join(""))
   },100)'

# 2
node -e p=process,t=0,T=6.28,M=Math,R=M.round,s='""
W=s=>p.stdout.write(s)
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{++t
W(`\x1b[2J`)
l=s.length+5
r=l/T
x=i=>R(M.cos((i-t)/r)*r+r)*2+1
y=i=>R(M.sin((i-t)/r)*r+r)+1
W(s.split(/\b/).map((w,i)=>w.split("").map(c=>`\x1b[9${i%7+1}m`+c)).flat().map((c,i)=>`\x1b[${y(i)};${x(i)}H`+c).join(""))
},99)'

# 3, 58 away
node -e p=process,t=0,M=Math,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{++t
l=s.length+5
r=l/6.28
q=(f,i,m)=>M.round(f((i-t)/r)*r+r)*m+1
p.stdout.write(`\x1b[2J`+s.split(/\b/).flatMap((w,i)=>w.split("").map(c=>`\x1b[9${i%7+1}m`+c)).map((c,i)=>`\x1b[${q(M.sin,i,1)};${q(M.cos,i,2)}H`+c).join(""))},99)'

# 4, 44 away
node -e p=process,t=0,M=Math,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{++t
r=s.length/6.28
q=(f,i)=>M.round(f((i-t)/r)*r+r)+1
p.stdout.write(`\x1b[2J`+s.split(/\b/).flatMap((w,i)=>w.split("").map(c=>`\x1b[9${i%7+1}m`+c)).map((c,i)=>`\x1b[${q(M.sin,i)};${q(M.cos,i)}H`+c).join(""))},99)'

# 5, 40 away
node -e p=process,t=0,M=Math,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{++t
r=s.length/6.28
q=(f,i)=>M.round(f((i-t)/r)*r+r)+1
o=0
p.stdout.write(`\x1b[2J`+s.split(/\b/).map((w,wi)=>w.split("").map(c=>`\x1b[9${wi%7+1}m\x1b[${q(M.sin,o)};${q(M.cos,o++)}H`+c).join("")).join(""))},99)'

# 6, 29 away
node -e p=process,t=0,M=Math,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{r=s.length/6.28
q=(f,i)=>M.round(f((i-t)/r)*r+r)+1
o=-++t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7+1}m\x1b[${q(M.sin,o)};${q(M.cos,o++)}H`+c))
p.stdout.write(`\x1b[2J`+S)},99)'

# 7, 26 away
node -e p=process,t=0,M=Math,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{r=s.length/6.28
q=(f,i)=>M.round(f((i+t)/r)*r+r+1)
o=--t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(M.sin,o)};${q(M.cos,o++)}H`+c))
p.stdout.write(`\x1b[2J`+S)},99)'

# 8, 34 away >.< regression
node -e 'let{exit:e,stdin:I,stdout:O}=process,t=0,M=Math,s=""
I.setRawMode(1).on("data",k=>k[0]-3?s+=k:e())
setInterval(()=>{r=s.length/6.3
q=(o,i)=>M.round(M.sin((i+t)/r+o)*r+r+1)
j=--t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,j)};${q(1.6,j++)}H`+c))
O.write(`\x1b[2J`+S)},99)'

# 9, 22 away
node -e p=process,t=0,s='""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{r=s.length/6.3
q=(o,i)=>parseInt(Math.sin((i+t)/r+o)*r+r+1)
o=--t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,o)};${q(1.6,o++)}H`+c))
p.stdout.write(`\x1b[2J`+S)},99)'

# 10, 16 away
node -e 'p=process,t=0,s=""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{r=s.length/6.3
q=(o,i)=>~~(Math.sin((i+t)/r+o)*r+r+1)
o=--t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,o)};${q(1.6,o++)}H`+c))
p.stdout.write(`\x1b[2J`+S)},99)'

# 11, 13 away
node -e 'p=process,t=0,s=""
p.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:p.exit())
setInterval(()=>{r=s.length/6.3
q=(o,i)=>~~(1+r+r*Math.sin(i/r+t/r+o))
o=--t
S=""
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,o)};${q(1.6,o++)}H`+c))
console.log(`\x1b[2J`+S)},99)'

# 12
node -e 't=0,s=""
process.stdin.setRawMode(1).on("data",k=>k[0]-3?s+=k:F)
setInterval((j=--t)=>{S=""
r=s.length/6.3
q=(o,i)=>~~(1+r+r*Math.sin(i/r+t/r+o))
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,j)};${q(1.6,j++)}H`+c))
console.log(`\x1b[2J`+S)},99)'

# 13
node -e 't=0,s="",p=process
p.stdin.on("data",d=>s+=d)
setInterval((j=--t)=>{S=""
r=s.length/6.3
q=(o,i)=>~~(1+r+r*Math.sin(i/r+t/r+o))
s.split(/\b/).map((w,i)=>w.split("").map(c=>S+=`\x1b[9${i%7}m\x1b[${q(0,j)};${q(1.6,j++)}H`+c))
p.stdout.write(`\x1b[2J`+S)},99)'

# 14 zero, baby!
node -e 't=0,s="",p=process
p.stdin.on("data",d=>s=""+d)
setInterval((j=--t)=>{S=""
r=(s.length+5)/6.3
q=(o,i)=>~~(1+r+r*Math.sin(i/r+t/r/9+o))
s.split(/\n|\b/).map((w,i)=>w.split("").map(c=>S=`\x1b[9${i%7}m\x1b[${q(0,j)};${q(1.6,j++)}H`+c+S))
s&&p.stdout.write(`\x1b[2J`+S)},99)'