Random dweets | Dwitter

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.

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Agnes

function u(t) {

for(c.width|=i=0;i++<100;f=1-i/100,x.fillStyle=R(o=255*f,o,o,1-f),x.font=4*i+"px A",x.fillText("Neat text",200*(1+f*S(t)),540+200*f*S(t)));

Apr 13 2018 9:13 PM UTC

}// 139/140

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u/DirtyDan

Neat.

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taupelink

remix of d/23666 by u/taupelink

function u(t) {

for(i=k=255;--i;x.fillRect(k*--X,630-i*Y,i*(q*q%t<t**-t),-q*Y*t))f=i*t,X=f*f%9,Y=S(X*f)*X,x.fillStyle=R(q=i*Y,q/=T(X/6)<Y?.9:-1.5,q^k,k/q/q)

Aug 29 2021 8:20 PM UTC

}// 140/140

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d/23688

u/aleamb

#impressionism

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JonasPeeters

function u(t) {

c.width=2e3
for(i=0;i<999;i++){
x.fillStyle=R(i/3,99-i/3,200);
x.fillRect((i*20)%999+480,Math.floor((i*20/999))*25+S(t*5+i*50)*5+400,15,17)}

Jan 2 2018 3:58 PM UTC

}// 140/140

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u/joeytwiddle

#waves #flag #cloth

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nix

function u(t) {

for(w=(c.width|=i=1e3)/8;i--;x.fillRect(i/85/(z=1.7+C(p+w))*w,500+C(z*t)/z*w,s=200/z/z,s/2))p=i/w+C(t/9)*9;x.stroke()

May 9 2018 11:23 PM UTC

}// 117/140

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u/aleamb

superb!

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Curlip

function u(t) {

x.fillStyle="#FFF5"
x.fillRect(0,0,1920,1080)
x.fillStyle="#000"
for(i=0;i<9;i++){
w=99*i+400+S(t)*300
x.fillRect(w,400-99*S(w/99),50,200)
}

Dec 30 2017 10:07 AM UTC

}// 140/140

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initramfs

remix of d/8984 by u/katkip

function u(t) {

n=frame
q=n%2?500:50
d=n%2?2*t:2*t/.987654321
X=960+q*C(d),Y=540+q*S(d)
n%3?x.moveTo(X,Y):x.lineTo(X,Y)
x.stroke()
x.fillRect(X,Y,50,5)

Jun 2 2021 10:12 PM UTC

}// 135/140

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u/katkip

.o.

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rodrigo.siqueira

remix of d/21257 by u/Xen

function u(t) {

for(i=2e3,f=g=>i*g(i/t+i**7);i--;x.fillRect(950+f(C),540+f(S),9/t,1+9/t))x.fillStyle=`hsl(${i/30},80%,${S(i/1e5+t)*99}%,.2`

Jan 13 2021 11:39 PM UTC

}// 123/140

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Dots of light

u/Qwitter

awesome, Im not sure why, but i think this frightens me after staring at it for a while.
u/Xen

nice!
u/iverjo

Put it in fullscreen and look at the center for at least 10 seconds - it might look like the big parts move in a wavy motion. #opticalillusion
u/joeytwiddle

Instructions unclear. Summoned Cthulu.
u/Qwitter

#barkfleshwound

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Ath0r

function u(t) {

c.width=1920
p=[a=960,a/3]
w=i=>[a+300*C(z=t+2.09*i),800+100*S(z)]
f=i=>x.lineTo(...i)
for(i=6;i--;){b=f(w(i));f(p);f(w(i))}
x.stroke()

Feb 26 2019 9:07 PM UTC

}// 135/140

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My first dweet (simple pyramid)

Show more comments…
u/katkip

Nicee
u/Ath0r

Thanks! It's the first time I've tried, so probably I missed a lot of tricks to reduce characters... Any feedback or tips are welcome! :D
u/13thptr

b is unused so you can remove it :)
u/13thptr

nice dweet btw
u/13thptr

127:c.width=1920 w=i=>[960+300*C(z=t+2.09*i),800+100*S(z)] f=i=>x.lineTo(...i) for(i=6;i--;)f(w(i)),f([960,320]),f(w(i)) x.stroke()
u/13thptr

ugh sorry here it is with semicolons instead of newlines
u/13thptr

c.width=1920;w=i=>[960+300*C(z=t+2.09*i),800+100*S(z)];f=i=>x.lineTo(...i);for(i=6;i--;)f(w(i)),f([960,320]),f(w(i));x.stroke()
u/Ath0r

Thanks a lot for the suggestions, @13thptr! Indeed, I forgot to remove the unused b and the characters you remove by avoiding the definition of p is also very nice :)
u/tomxor

It's a spinning simplex!! :D great 1st dweet
u/Ath0r

Thanks @tomxor :D
u/f8f82804

#d3 #wireframe

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DirtyDan

remix of d/6704 by u/DirtyDan

function u(t) {

for(i=1;i<360;i++)x.fillStyle=`hsl(${i/2+90*t},99%,50%)`,R=532*S(t+i/360),x.fillRect(960+R*C(t+i)-4,540+R*S(t+i)-4,8,8)

Feb 5 2018 2:39 AM UTC

}// 119/140

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Changed the flow and made the colors cycle

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tzador

function u(t) {

c.width|=0
for(a=0;a<6.2831;a+=0.01) {
r=400+30*S(a*23+5*t)+66*C(a*7-3*t)
x.lineTo(960+r*C(a),540+r*S(a))
}
x.fillStyle='#9c36b5'
x.fill()

Jan 25 2025 5:16 PM UTC

}// 139/140

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Rotates both clockwise 🔃 (big waves) and anti-clockwise 🔄 (small waves)