Dweets awesomed by u/andrea270872

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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Xen

remix of d/12782 by u/andrea270872

function u(t) {

for(x.fillRect(0,0,2e3,K=k=1e3);k--;z>0&&x.clearRect(K+(k*97/60%11-5)*K/(99-z),500+(k*89/60%13-6)*K/(99-z),8,8))z=(60*t-k)%99

Mar 16 2019 3:35 PM UTC

}// 125/140

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Slight tweak

u/katkip

Looks like something #space #starfield
u/ximavus

Here's it with globalAlpha to .1: for(x.fillRect(x.globalAlpha=.1,0,2e3,K=k=1e3);k--;z>0&&x.clearRect(K+(k*97/60%11-5)*K/(99-z),500+(k*89/60%13-6)*K/(99-z),8,8))z=(60*t-k)%99

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marc8

function u(t) {

c.width|=r=300
with(x){lineWidth=9
for(i=0;i<9;i++)fillRect(z=400+i*100+C(t)*r,400,50,200)
arc(z,h=500,10,0,7)
arc(310,h,r,t,t+6)
stroke()}

Mar 16 2019 2:48 PM UTC

}// 139/140

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#default engine

u/katkip

WOW
u/katkip

Genius idea
u/katkip

This deserves an awesome
u/f8f82804

#mechanism

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andrea270872

function u(t) {

for(c.width|=K=k=1e3;k--;z>0&&x.fillRect(K+(k*97/60%11-5)*K/(99-z),500+(k*89/60%13-6)*K/(99-z),8,8))z=(60*t-k)%99

Mar 16 2019 2:32 PM UTC

}// 113/140

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star field (using the forLoop suggestion)

u/Xen

nice

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andrea270872

function u(t) {

c.width|=0
P=t?P.map(([i,j,z,v])=>[i,j,z?z-1:99,x.fillRect(1e3+1e3*i/z,500+500*j/z,z=500/z,z)]):[]
P[99]||P.push([t*97%11-5,t*79%11-6,99])

Mar 16 2019 2:22 PM UTC

}// 138/140

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asteroid shower (still working on getting the forLoop trick from #pavel :> )

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tomxor

function u(t) {

eval(unescape(escape`琯㴳㭣⹷楤瑨㴴㠰㭣⹳瑹汥㴧晩汴敲㩩湶敲琨ㄧ㭦潲⡩㴱㑥㌻椭ⴻ砮晩汬剥捴⠲㐰⬶〪䌨堩ⵓ⡘⭴⤪娬ㄲ〫㘰⩓⡘⤪䌨天⭓⡙⭴⤪娬ㄬ⡫㵃⡙⭴⤩㰰㼮〴㩫⤩堽椥ㄲ〯㌹ⱙ㵩⼴㙥㈬娽匨䌨匨太ㄷ⤫匨堪ㄷ⤩⼮㌩`.replace(/u(..)/g,"$1%")))

Mar 16 2019 12:37 AM UTC

}// 140/140

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#moon #space

Show more comments…
u/tomxor

golfed a moon... or moon a golf ball?
u/Xen

Nicely Done!
u/katkip

It floating in empty space so probably it's a golf ball hit by Chuck Norris
u/13thptr

lol
u/13thptr

Very nice dweet btw
u/yonatan

Dude!
u/joeytwiddle

#lighting Not a #planet
u/lionleaf

#shading

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robotman_

function u(t) {

f=_=>S(a)+S(a/3)+S(a/2)
h=2.4
for(c.width^=i=0;i<9;i++)a=t+i*4,x.fillRect(960+960/h*f(a),0,5,1080),x.fillRect(0,540+540/h*f(a),1920,5)

Mar 15 2019 11:48 PM UTC

}// 134/140

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Input your own wave function for f and it's maximum m

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andrea270872

remix of d/12771 by u/andrea270872

function u(t) {

c.width|=K=1e3
A=[(t*97%11-5)*K,(t*89%13-6)*K,0]
P=t?P.map(([i,j,z,v])=>[i,j,(z+1)%99,x.fillRect(K+i/z,500+j/z,z,z)]):[A]
P[K]||P.push(A)

Mar 15 2019 7:44 PM UTC

}// 137/140

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Build-up!

Show more comments…
u/Xen

love it
u/pavel

103 for(c.width|=K=k=1e3;k--;z>0&&x.fillRect(K+(k*97/60%11-5)*K/z,500+(k*89/60%13-6)*K/z,z,z))z=(60*t-k)%99
u/pavel

Looks like the code you started with used Math.random at each step which made the ultimate position of each square at time 't' impossible to determine directly. Switching to instead use any function of just t makes it quite simple so there is no need to initialize stuff at time 0 and keep it updated.
u/pavel

I learned that in d/11421 to save chars and make d/11424
u/andrea270872

great. thanks very much
u/andrea270872

In my head I was thinking also that t*97%11 is a pseudo-random generator...
u/katkip

Satisfying

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andrea270872

function u(t) {

c.width|=K=1e3
A=[(t*97%11-5)*K,(t*89%13-6)*K,0]
P=t?P.map(([i,j,z,v])=>[i,j,(z+1)%99,x.fillRect(K+i/z,500+j/z,8,8)]):[A]
P[K]||P.push(A)

Mar 15 2019 7:43 PM UTC

}// 137/140

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Remove the drain stopper v2

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andrea270872

function u(t) {

c.width|=r=Math.random
A=[r()-.5,r()-.5,99,1]
P=t?P.map(([i,j,z,v])=>[i,j,z?z-v:99,v,x.fillRect(1e3+z/i,500+z/j,8,8)]):[A]
P[99]||P.push(A)

Mar 15 2019 7:30 PM UTC

}// 139/140

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Remove the drain stopper

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andrea270872

function u(t) {

c.width|=r=Math.random
x.canvas.onclick=e=>{P=[500,500,r()*5-2,-r()*10]}
[I,J,U,V]=P
P=t?[(I+U)%2e3,J+V,U,V+.1]:0
x.fillRect(I,J,8,8)

Mar 15 2019 5:58 PM UTC

}// 133/140

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Shoot a particle (click anywhere on the canvas)

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