Dweets awesomed by u/DataMeta

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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Current theme challenge: #Food

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taupelink

remix of d/15661 by u/taupelink

function u(t) {

for(f=.5,i=d=e=1e3;i--;x.fillRect(960+d*z*C(e),540+d*z*S(e),f,f))r=20+Math.random(z=60)*z|0,[d,e,f]=[r/5+f*C(d),r+f*S(d)/r**.5,r%2+.5/f**.5]

Sep 29 2019 9:00 PM UTC

}// 140/140

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d/15854

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DataMeta

remix of d/15843 by u/DataMeta

function u(t) {

s=C(t);c.style.background='#CCC';if(t<3)for(i=2e3;i--;)
x.fillStyle=R(l=i/7,l,l),x.fillRect(t*s>=0?1920-i:i,540-l*s*2,9,9)

Sep 29 2019 7:42 PM UTC

}// 122/140

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DataMeta

remix of d/15839 by u/DataMeta

function u(t) {

s=C(t);c.style.background=R(g=s*255,g,g);if(t<3)for(i=1920;i--;)
x.fillStyle=R(l=i/7.5,l,l),x.fillRect(t*s>=0?1918-i:i,540-g,4,4)

Sep 29 2019 4:55 AM UTC

}// 129/140

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#gradient #illusion

u/katkip

nice
u/iverjo

#opticalillusion

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DataMeta

function u(t) {

c.style.background=R(g=S(t*1.5)*255,g,g);if(t<3)for(i=1920;i--;)
x.fillStyle=R(l=i/7.5,l,l),x.fillRect(i,540-C(t)*i/5,13,13)

Sep 28 2019 4:17 PM UTC

}// 124/140

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Had this laying around. Demonstrates the #illusion in d/15823. The triangle's #gradient remains unchanged.

u/DataMeta

The center of the base of the triangle doesn't exhibit the illusion strongly since there is a constant reference color near it and it is far from the changing background.
u/iverjo

#opticalillusion

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joe.m

remix of d/15836 by u/joe.m

function u(t) {

t?0:q=j=4900,d=[-1,99,1,-99]
x.globalCompositeOperation='xor'
j+=u[q]?-1:1
u[q]^=1
q+=d[j%4]%9801
x.fillRect(19*(q/99|0),10*(q%99),18,8)

Sep 28 2019 2:08 PM UTC

}// 136/140

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langton's ant. Chaos becomes order after about 10k iterations, wait for it...

u/joe.m

#emergent #automata
u/KilledByAPixel

Welcome to the #ant club!
u/Xen

nice!

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tomxor

remix of d/15822 by u/joe.m

function u(t) {

for(c.width=w=X=1920;X--;x.fillRect(X,w*Y/18,9,9))
for(Y=n=5;n--;k=n*2+1,Y+=S(38*X/w*k)/k**(2-S(5*X/w-3*t)))1

Sep 27 2019 8:03 PM UTC

}// 109/140

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Squine Wave

Show more comments…
u/Xen

i wanna hear it!
u/tomxor

Oh no the challenge has been set! i'd imagine it sounds a bit like wavetable synthesis, even though it's not.
u/KilledByAPixel

it sounds like tone morphing between a sine and square wave.
u/katkip

interesing
u/katkip

^ with t
u/iverjo

#waveform

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robbyg

remix of d/15802 by u/robbyg

function u(t) {

for(i=2304,Z=30;i--;x.fillRect(H*Z,V*Z,Z,Z))H=i%64,V=i/64|0,A=Math.atan2(V-18,H-32),x.fillStyle=S(Z*t+5*A)>0>0?'#1112':'#eed6'

Sep 27 2019 3:22 PM UTC

}// 126/140

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Staring at the ceiling fan.

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Xen

function u(t) {

with(x)for(i=8;i--;fillStyle=`hsl(${a*57.3+t} 70%60%`)beginPath(fill(lineTo(960,540))),arc(960,540,2e3,a=i*.8-t,a+.8)

Sep 26 2019 5:10 PM UTC

}// 117/140

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u/DataMeta

Mhm yup

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robbyg

remix of d/15800 by u/zooi

function u(t) {

for(i=3e3,c.width|=Z=30;i--;S(8*t+8*A)>0&&x.fillRect(H*Z,V*Z,Z,Z))H=i%65,V=i/65|0,A=Math.atan2(V-18,H-32),x.fillStyle=`hsl(${A*57},70%,60%)`

Sep 25 2019 9:48 PM UTC

}// 140/140

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Remixed for fullscreen goodness and color. 🌈⭐

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yonatan

function u(t) {

for(c.width|=i=99,x.font='4in "';i--;x.fillText('EMBOSS',250+(i&&S(i)*i/9),750+(i&&C(i)*i/9)))x.fillStyle=`hsl(0 0%${i?S(i+t*2)*50+75:99}%`

Sep 24 2019 12:00 PM UTC

}// 140/140

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I think fullscreen looks nicer

u/joeytwiddle

#text #lighting

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