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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BuRRak

function u(t) {

c.width|=0
P=(L,A,N,E,T)=>{x.fillRect(I=L+C(T)*N,J=A+S(T)*N,E,E);x.fill();return[I,J]}
P(...P(...P(960,540,0,50,0),250,20,t),100,10,t*6)

May 4 2018 7:25 PM UTC

}// 138/140

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Solar system. I was unable to make it with arcs, tho

u/iverjo

Thumbs up for the P=(L,A,N,E,T) :D
u/katkip

Awesome! that P=(L,A,N,E,T) easter egg is genius

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vinca

function u(t) {

for(c.width=150,i=11250;i--;)x.fillRect(X=i/75,Y=i%75,1,S((X|Y|t)*t*.1))

Apr 3 2019 12:04 PM UTC

}// 72/140

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u/andrea270872

S and | together... wow. I cannot see what that is as a math function, but the effect is amazing
u/katkip

metal
u/joeytwiddle

#shiny

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jellyedwards

function u(t) {

a=960;b=a/2;
with(x)
for(i=j=99;i--;fill())
beginPath(),fillStyle=i>34?R(0,i,i,t*i%1/j):R(0),moveTo(a,b),arc(a,b,b*i/j,t,t+.05),lineTo(a,b)

Aug 5 2019 5:50 AM UTC

}// 139/140

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#iris

u/katkip

#realistic

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katkip

remix of d/9349 by u/katkip

function u(t) {

if(!t){i=0;x.translate(960,540)}x.fillRect(Math.sin(i)*540,Math.cos(i)*540,Math.tan(i)*i,3);x.rotate((i++,5))

Aug 23 2018 9:30 AM UTC

}// 109/140

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Math logo creator 2

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initramfs

remix of d/4220 by u/Xen

function u(t) {

(s=>{for(;a<1.5e3;a+=s)for(b=1;b<=1e3;b+=s)x.fillRect(a,b,s*C(b+t),s*S(a+t),x.fillStyle=`hsla(${(a+b)*S(t)},1000%,50%,20)`)})(a=75+C(t))

May 31 2021 4:04 PM UTC

}// 136/140

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deobfuscate

function u(t) {

with(x){
globalCompositeOperation='xor'
for(i=9;i--;font="30em'")x.fillText('ö',-150+(S(t*2)*1e3+1e3)%2e3,300+400*i)}

Apr 17 2023 5:55 PM UTC

}// 117/140

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ö my god... someone describe this for me

u/deobfuscate

Im at 69 awesomes :)
u/taupelink

Nice
u/deobfuscate

this actually can be compressed to 111 chars
u/deobfuscate

x.globalCompositeOperation='xor' for(i=9;i--;x.font="30em'")x.fillText('ö',-150+(S(t*2)*1e3+1e3)%2e3,300+400*i)

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rodrigo.siqueira

remix of d/28688 by u/rodrigo.siqueira

function u(t) {

for(a=b=0,i=1e5;i--;b+=C(a*3+r/2)/5-a*b/5,a+=(r-a+b*S(a*4))*.3)i%2&&(r=i*t/b&1,x.fillRect(a*1800+110,700-b*1400,.1,t<5))

Oct 16 2023 12:31 AM UTC

}// 120/140

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Pair of Fractals

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warbino

remix of d/31888 by u/mhi

function u(t) {

c.width+=X=Y=Z=d=.19
for(i=9e3;i--;)X+=d*(-d*X+S(Y)),Y+=d*(-d*Y+S(Z)),Z+=d*(-d*Z+S(X)),
x.lineTo(960+99*(X/C(t)&Y*S(t)),560-99*Z)
x.stroke()

May 24 2024 5:30 PM UTC

}// 140/140

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awesome!

u/thenize

MathTechCoach>warbino
u/warbino

true
u/warbino

awesome!

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rodrigo.siqueira

function u(t) {

for(i=4e4;i--;x.fillRect(59.6*X,26*Y+551,(f&64)/50,t<2))X=i*i/t%35,Y=23*S(i),f=1/(8*(X|-2)|Y*3)*99;x.font='1.1in"',x.fillText('🐓',980,795)

Jan 29 2025 7:11 PM UTC

}// 138/140

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Freeway 🐓 #atari

u/KilledByAPixel

Why did the chicken cross the dweet?
u/UEZ

Suicide?

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KilledByAPixel

remix of d/27866 by u/@noel

function u(t) {

for(c.width=i=w=255;i--;)for(j=142;j--;)x.fillRect(i,j,1,((w*(C(a=Math.atan2(X=2*i/w-1,Y=2*j/w-.6))/(d=(X*X+Y*Y)**.5)+t)^w*(S(a)/d+t))&w)/w)

Jun 6 2023 5:16 AM UTC

}// 140/140

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Projection Faster and Uncompressed

u/@noel

I love this one and I follow the logic, until the z & w performing. I know it's a bitwise AND operation on z and w, but I don't actually grasp it.
u/@noel

I mean on this one: x.fillRect(i, j, 1, (z & w) / w)
u/joeytwiddle

Here (z & w) / w is the height of the rectangle. If that height is less than 1, then the canvas anti-aliasing renders a grey pixel, instead of a black one.
u/@noel

Thanks u/joeytwiddle Now I think I get it. (z & w) ensures that the value of z remains within the range of the canvas width 'w', and the dividing by w normalizes the height value. Great trick!