Top dweets by u/andrea270872

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: #Opposites

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andrea270872

function u(t) {

T=t%15
T>2?0:c.width|=0
x.font=(33+T**1.6)+'px A'
x.translate(3*S(T*240)*T**3,2*C(T*299)*T**3)
x.fillText('🐤',900,600)

Feb 11 2020 9:46 PM UTC

}// 118/140

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Chick-xplosion! #growth

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andrea270872

function u(t) {

F=[x=>x,x=>1-x*x,x=>x*(1-x),x=>(1-x)**2]
for(a=1e3,i=0;i++<a;x.fillStyle=`hsl(${S(t)*60%60},90%,50%,.1`)x.fillRect(i,F[~~t%4](i/a)*a,99,1)

Nov 25 2019 5:55 PM UTC

}// 139/140

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colored easing functions

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andrea270872

function u(t) {

F=[x=>x**3,x=>(1-x)**2,x=>x**5,x=>x]
for(i=900;i-->0;){
x.fillStyle=R(t%3*180)
x.fillRect((i%15+t%1)*128,(i/15-F[i%4](t%1))*72,30,9)
}

Nov 24 2019 10:09 PM UTC

}// 134/140

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more fun with easing functions

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andrea270872

remix of d/12954 by u/andrea270872

function u(t) {

c.width=2e3+S(t)*99
for(j=1;j++<9;x.fillStyle='#02'+j)for(i=9;i--;){F=(S(i)*C(i/9+j+t))**.1;x.fillRect((i+j/8)*200,50*j-F*10,190,80*j+F*20)}

Apr 1 2019 7:08 PM UTC

}// 140/140

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Running in the maze v3

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andrea270872

function u(t) {

U=frame%20
if(U==1)K=[B=++t%2-1,A=S(t),-A,B,1e3,500,x.resetTransform()]
x.transform(...K)
x.fillStyle='#E'+U*U
x.fillRect(0,0,99,70)

Mar 26 2019 7:09 PM UTC

}// 132/140

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random affine transforms + colors

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andrea270872

function u(t) {

c.onclick=_=>{T=9}
x.fillRect(0,0,2e3,2e3)
T|=0
A=T?(T--/9)**2*30:50
for(i=30;i--;x.fillText('👀',(t+i)%7*300-A,S(i)*i*40))x.font=A+i+"px'"

Mar 23 2019 9:25 PM UTC

}// 138/140

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Blinking eyes (click to make them blink)

u/andrea270872

#interactive

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andrea270872

remix of d/12689 by u/andrea270872

function u(t) {

c.width|=q=25
p=q*q*t%2e3
D=(c,d)=>4e3/((z-c)**2+(w-d)**2)**.5
for(i=0;i++<q*q;)x.fillRect(z=~~(i/q)*95,w=i%q*60,m=D(p,450)+D(800,p),m)

Mar 21 2019 2:47 PM UTC

}// 135/140

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2 swimming magnets (ver2)

u/f8f82804

#halftone #dither

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andrea270872

remix of d/12769 by u/andrea270872

function u(t) {

c.width|=r=Math.random
c.onclick=e=>{P.push([500,500,r()*5-2,-r()*10])}
P=t?P.map(([i,j,u,v])=>[i+u,j+v,u,v+.1,x.fillRect(i,j,8,8)]):[]

Mar 17 2019 1:23 PM UTC

}// 135/140

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Click to create a new particle

u/Jezza

#interactive
u/joeytwiddle

{P.push([e.x*3.4,e.y*3.4,r()*5-2,-r()*10])}

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andrea270872

remix of d/22743 by u/andrea270872

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👁🐮𜰯𠰨𭀥𞐯𞐩𒡆👮🐾𫠼𞀲𙠦𮀮𭁲𨑮𬱦𫱲𫐨𠰨𠐩𚰮𜐬𤰨𠐩𛀭𤰨𠐩𛁃𚁁𚐬𜀬𜀩𯁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𞐬𞐩𯁆𚁮𚰱𚐊𩡯𬠨𪐽𝰻𪐭𛐻𮀮𬱥𭁔𬡡𫡳𩡯𬡭𚀱𛀰𛀰𛀱𛀱𩐳𚱃𚁴𚱩𚐪𝠰𜀬𝠰𜀫𤰨𭀭𪐩𚠳𜀰𚐩𮀮𩡩𫁬𤱴𮑬𩐽𘠣𠑁𠰢𚱩𛁆𚁩𚐠`.replace(/u../g,'')))

May 11 2021 7:54 PM UTC

}// 140/140

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#seashell ... but many this time :)

u/andrea270872

Here is the uncompressed code:
u/andrea270872

c.width|=A=.3/C(t%9/9) F=n=>n<82&&x.transform(C(A)+.1,S(A),-S(A),C(A),0,0)|x.fillRect(0,0,9,9)|F(n+1) for(i=7;i--;x.setTransform(1,0,0,1,1e3+C(t+i)*600,600+S(t-i)*300))x.fillStyle="#AAC"+i,F(i)

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andrea270872

function u(t) {

x.rotate(S(t/2)*.00069)
for(i=24;i--;)x.fillStyle=i%2?'#EDC':'#DCB',x.fillRect(60*t%2e3,i*50,S(t/2)+2,50)

May 29 2020 7:53 PM UTC

}// 105/140

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zen garden (?)

u/andrea270872

#waitForIt

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