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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Xen

remix of d/26788 by u/KilledByAPixel

function u(t) {

with(x)t||translate(R=888,lineWidth=7),beginPath(stroke()),arc(!rect(0,0,R,R),0,R,0,r=1.57),translate(0,R-(R*=.618)),rotate(r)

Jan 9 2023 7:37 PM UTC

}// 126/140

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Slight golf, could be 115 without beginPath but goes nuts towards middle.

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patavinas

function u(t) {

eval(unescape(escape`琿琽琪㘰簰㩮㵯㵰㵱㴰ੱ⬽㕥ⴴੳ㵱⨪㈊渽⡮⭳⨲〩┲攳੮㱯㽰⬽猪㄰㨰੸⹦潮琽猫≥洧∊砮晩汬却祬攽∣〸〢੸⹦楬汔數琨却物湧⹦牯浃潤敐潩湴⠹㐸〫琥㤹⤬測㤹⭰⭓⡴⤪㈰⤊漽渠`.replace(/u([^D].)/g,'$1%')))

Jan 12 2023 1:29 AM UTC

}// 132/140

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#hills

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patorick1

remix of d/26775 by u/patorick1

function u(t) {

for(i=0;i<60;i++){for(j=0;j<150;j++){
r=Math.floor(Math.random()*255)
x.fillStyle=R(i,r,255-i*4+j,0.5)
x.fillRect(j*r/10,i*r/10,r/200,r)
}}

Jan 9 2023 5:58 AM UTC

}// 139/140

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taupelink

remix of d/20654 by u/taupelink

function u(t) {

eval(unescape(escape`昽⡸Ɱ㴶㐩㴾䵡瑨⹡扳⡮㽦⡸Ɱ㸾ㄩ㩸⤭港㌲㭲㵍慴栮牡湤潭㭦潲⡩㵫㴱㤲㭩ⴭ㭸⹦楬汒散琨欪堬欪夬㔬㔩⥘㵲⡙㵲⠩⨶⤪㄰ⱨ㵫⩦⡰㵙⩓⡱㴳⩦⠳⩘ⴱ㘩⤫㘪䌨昨㜪匨天⤩⤬砮晩汬却祬攽刨栯焬栯瀬栩`.replace(/u([^D].)/g,'$1%')))

Jan 8 2023 11:55 PM UTC

}// 140/140

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d/26784

u/taupelink

More experimentation with SDF's, specifically f=(x,n=64)=>Math.abs(n?f(x,n>>1):x)-n/32;
u/taupelink

The colors could use some work, so this dweet may not be worth the #waitforit

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taupelink

remix of d/26784 by u/taupelink

function u(t) {

eval(unescape(escape`昽⡸Ɱ㴶㐩㴾䵡瑨⹡扳⡮㽦⡸Ɱ㸾ㄩ㩸⤭ㄯ⡮⬱⤻朽䄽㹸⹦楬汒散琨⸮⹁⤻木嬹㘰ⰰⰱⰲ攳崩㭧⡛〬㔴〬㉥㌬ㅝ⤻景爨椽ㄹ㈰㭩ⴭ㭧⡛椬㔴〭㌲〪夬㈬㉝⤩堽⡩ⴹ㘰⤯㌲〬夽昨堩`.replace(/u([^D].)/g,'$1%')))

Jan 9 2023 5:59 PM UTC

}// 129/140

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d/26793

u/taupelink

For future reference. Inspired by SDFs and Piter Pasma's video about them

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Xen

remix of d/26793 by u/taupelink

function u(t) {

for(g=A=>x.fillRect(...A),g([0,540,i=Z=2e3,2]);i--;g([i,540-320*f((i-960)/320),2,2]))f=(x,n=64)=>Math.abs(n?f(x,n>>1):x)-1/(n+1)

Jan 9 2023 11:20 PM UTC

}// 128/140

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slight golf so it fits, not sure if useful

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taupelink

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󜜹󜬻󮌮󭍲󨝮󬽬󨝴󩜨󞜶󛌵󝌩󞽸󛭴󬭡󫭳󩭯󬭭󚌲󛍓󚌱󛝴󛼵󚜬󛬴󛍓󚌲󛝴󚜬󜌬󜌩󞽸󛭦󪝬󫍒󩝣󭌨󜌬󛜵󜌬󜬬󞜹󚜻󮌮󬭯󭍡󭍥󚌭󭌯󜼩󞽦󫽲󚍩󟜹󞽩󛜭󞽸󛭦󪝬󫍒󩝣󭌨󚍩󚼳󚭓󚍴󚜭󝜩󚬶󛌴󛌳󛌭󜜸󚜩󮌮󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮼨󪜫󝌪󭌩󚬱󜍽󛌸󝜥󛌳󝜥󚝠`.replace(/u../g,'')))

Jan 9 2023 5:19 AM UTC

}// 140/140

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d/26786

u/taupelink

Prompt: Suprematism. #genuary #genuary11 #genuary2023
u/taupelink

#default

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patorick1

function u(t) {

c.width=999
for(i=0;i<40;i++){for(y=0;y<40;y++){t=new Date().getTime()*.000003
z=S(100*(i*S(t/2)+y*C(t/3))+t)*9
x.fillRect(i*9,y*9,z,z)
}}

Jan 8 2023 7:32 PM UTC

}// 138/140

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third attempt

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DaSpider

remix of d/26770 by u/patavinas

function u(t) {

t?c.width+=0:(f=1,e=2,d=3)
x.font="9em'"
x.fillText("π ≈ "+d,50,610)
for(i=999;i--;(f*=-1,e+=2))
d+=f*4/(e*(e+1)*(e+2))

Jan 8 2023 6:50 AM UTC

}// 119/140

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A bit faster convergence

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taupelink

remix of d/15141 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽ㅥ㐬搽攽〻椭ⴻ⥸⹦楬汒散琨搪ㄹ㈰ⱥ⨱〸〬⠨搪攥⸲⴮ㄩ⨪㈫⠨攪攭搪搫ㄩ┮㈭⸱⤪⨲⴮〱⤪⨲㰴攭㔬ㄩⱤ⬽⡛ⴱⰰⰱⰲ嵛爽䵡瑨⹲慮摯洨⤪㑼そⵤ⭤⩥⤪⸴㔬攫㴨嬲Ⱝㄬ〬㉝孲崭攭搪搩⨮㐵`.replace(/u([^D].)/g,'$1%')))

Jan 7 2023 10:25 PM UTC

}// 139/140

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d/26774

u/taupelink

Prompt: Signed Distance Functions. Compare to d/15141
u/taupelink

#genuary #genuary8 #genuary2023