Dwitter - javascript demos in 140 characters

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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rodrigo.siqueira

function u(t) {

x.globalAlpha=.1;x.fillRect(0,0,2e3,2e3)
for(X=-5;X<5;X=X+.01)
ψ=(1-X**2)*2**-(X**2),
x.clearRect((X+5)*192,540-ψ*500*S(S(t*5)**9),5,5)

Feb 25 2020 2:32 AM UTC

}// 135/140

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Morlet wavelet (The Mexican hat), variation from the one in "Wavelet basics" tutorial. I'm starting to play with #wavelet

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yonatan

remix of d/17718 by u/yonatan

function u(t) {

with(x)for(c.width|=k=i=960;i--;strokeRect(i,i,q=i*-2,q))setLineDash([k/i&1?i/9:i]),setTransform(a=C(z=lineWidth=i/k/2),b=S(z-t),a,-b,k,540)

Feb 23 2020 9:33 PM UTC

}// 140/140

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jellyedwards

remix of d/17743 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(i=20;i--;)
for(X=-5;X<=5;X+=.05)
ψ=(1-X**2)*3**-(X**2/2)*S((i+t*20)/4)+.5,x.fillRect((X+5)*140+i*30,i*40+400-ψ*300,4,4)

Feb 25 2020 7:46 AM UTC

}// 134/140

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Different animation

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Xen

remix of d/17734 by u/lulasz

function u(t) {

with(x)beginPath(strokeStyle=`hsl(${t*69},99%,50%,.1)`),arc(960+C(t*9)*203,540+S(t*9)*200,300,lineWidth=2,9),stroke()/Donut

Feb 24 2020 5:43 PM UTC

}// 123/140

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Rainbow Donut2: ReDweetered - Shoutz 2 lulasz

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django

function u(t) {

w=1920;h=1080;if(t>=3.3)return;
for(i=0;i++<10;)j=C(t/2)*S(i/2)*h/3+w/2-4,k=S(t/2)*C(i/2)*h/3+h/2-4,
x.fillRect(j,k,8,8)

Feb 24 2020 7:33 AM UTC

}// 120/140

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freeze frame

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New_Core

remix of d/17718 by u/yonatan

function u(t) {

for(c.width|=k=i=960;i--;x.strokeRect(k-i+i/3*S(t+k/i/2),540-i+i/9*C(t+k/i/3),i*2,i*2))x.setLineDash([t+k/i&1?i/2:i])

Feb 24 2020 2:01 PM UTC

}// 117/140

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imagin walking in that corridor

u/lulasz

Love it

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iznax

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲👠𨡬𭑲𚀹𬁸𚑣𫱮𭁲𨑳𭀨𞑠𒡦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐱𛁸𛡦𪑬𫁓𭁹𫁥🐢𘱦𞀷𘠻𛐭𪐻𭰽𜐲𜀫𪐥𜠪𜐴𜀬𮀮𨑲𨰨𞐶𜀭𠰨𭀯𜐲𚐪𝀵𜀫𤰨𨐽𤰨𭀪𜠫𪐩𛰵𚱩𚠷𛠵𚱴𛰲𚐪𭰬𝠰𜀫𤰨𭀯𝠩𚠹𜀫𠰨𨐩𚡷𛀱𜠰𛀰𛀶𚐬𮀮𩡩𫁬𚀩𚑸𛡢𩑧𪑮𤁡𭁨𚀩`.replace(/u../g,'')))

Feb 23 2020 3:17 AM UTC

}// 140/140

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Mr. Starfish likes long walks on the beach and face hugs... #longwalks

u/tomxor

I can only see eggs now! 🤪
u/aleamb

#organic #cell #amoeba

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lulasz

function u(t) {

x.fillStyle = R(255-C(t)*128,64+S(t)*128,128+S(t)*128);
for(i=0;i<t;i++)
x.fillRect(t*99,c.height/2+C(t*9)*S(t)*190,5,99)

Feb 24 2020 11:58 AM UTC

}// 126/140

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Life

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katkip

function u(t) {

for(q in w="shift.for.me",W="SHIFT!FOR!ME",z="",c.width*=1,w)z+=S(q/3+t)<0?W[q]:w[q];x.font="5cm monospace",x.fillText(z,330,600)

Feb 23 2020 8:39 AM UTC

}// 129/140

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I made shift.for.me. a game made under 2kb (2kPlus submission). https://kipkat.itch.io/shift

u/KilledByAPixel

👍
u/tomxor

👍 wow, gets disorienting around 5k, harder than i looks.
u/katkip

thanks for playing!

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pavel

function u(t) {

with(x){for(beginPath(t||scale(9,9)),fillText('STONKS',160,99),i=2;i--;lineTo(6*j,111-j*j/9+11*S(4*j)))j=~~t+i;rect(1,-1,222,111);stroke()}

Feb 22 2020 5:46 AM UTC

}// 139/140

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Stonks #growth

u/pavel

#meme
u/mole

I appreciate this