Top dweets by u/iverjo

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: #ScaryMovies

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iverjo

function u(t) {

c.width=96;for(i=5184;i--;)X=i%96-48,Y=0|(i/96),z=S(t*3)/4+.5,x.fillRect(X+48,Y,S((X*C(t)-Y*S(t))*z),S((X*S(t)+Y*C(t))*z))

Feb 28 2017 10:17 PM UTC

}// 122/140

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This was my first attempt at creating a rotozoom effect. Created in February 2016

u/iverjo

#rotozoom

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iverjo

remix of d/334 by u/iverjo

function u(t) {

c.width=960;for(i=20;i--;)for(j=12;j--;)x.fillRect(50*i-9*S(A=4*t+i*C(t/8)*.6+j*S(t/8)*.4),50*j+9*C(A),W=25+C(A)/.3,W),x.fill()

Jan 14 2017 4:18 PM UTC

}// 127/140

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iverjo

function u(t) {

for(i=4e3;i--;)c=155+99*S(t+4*S(i*9)),x.fillStyle=R(99+c,c),s=45/(9-(t+i/100)%9+1),x.fillRect(960+25*s*C(i),540+25*s*S(i),s,s)

Jul 21 2016 2:56 PM UTC

}// 126/140

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Solar beams

u/iverjo

#sun

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iverjo

function u(t) {

for(i=0;i++<2e3;)s=45/(9-(t+i/99)%9),c=155+99*S(i*22),x.fillStyle=R(c*S(t),c*S(t-2),c*S(t-4)),x.fillRect(960+5*s*C(i+t),540+5*s*S(i+t),s,s)

Feb 21 2016 9:08 PM UTC

}// 139/140

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#tunnel

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iverjo

function u(t) {

n=c.width=2e3;for(i=9;i<n;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Feb 21 2016 9:05 PM UTC

}// 139/140

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u/3bl3gamer

200% cooler in fullscreen mode
u/5Mixer

Woah, this is freaking impressive!
u/iverjo

#tunnel

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iverjo

function u(t) {

c.width=2e3;for(i=4e3;i--;)s=149/(i*3+199),q=s*99,x.fillRect(2e3*(T(i/9)+s*t)%2100-q,540+540*S(s*2e3),q,q)

Feb 21 2016 8:49 PM UTC

}// 106/140

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Try this in full screen. Move your head close to the screen and focus on one of small, slow-moving dots. It probably feel like you are moving sideways.

u/iverjo

You brain might also trick you into believing that the smallest dots are moving right
u/iverjo

I mean left
u/aemkei

down to 87 bytes: https://www.dwitter.net/d/2180
u/iverjo

#parallax

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iverjo

remix of d/7856 by u/iverjo

function u(t) {

X=S(S(t*4)*1.5),x.lineTo(960+110*X*X*X,480-546*C(t)+294*C(2*t)),t<7&&x.fill();x.clearRect(278+(t|0)*90,155,15,15)

May 12 2019 12:32 PM UTC

}// 113/140

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Catwoman, golfed with a little help from joeytwiddle

u/pavel

(t|0) === ~~t
u/KilledByAPixel

ｓｌｅｎｄｅｒｍａｎ
u/vinca

It's great to create complex shapes from simple code O_o

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iverjo

remix of d/1232 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)d=C(p=t+i/3e3+i%4/.637)-S(p),x.fillStyle=R(a=74*d+74,0,a),d>0&&x.fillRect(960+199*S(p)+400*S(t+i/6e3),i/4,199*d,1)

Feb 25 2017 1:23 AM UTC

}// 140/140

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Compromised on the speed and movement to add color

Show more comments…
u/sigveseb

we can golf more!
u/iverjo

Never stop golfing!
u/donbright

replace 0,t with i/t in fillstyle and this looks REALLY weird
u/donbright

oops i mean 0,a
u/iverjo

Cool :) Posted it here: https://www.dwitter.net/d/1308
u/iverjo

#twister

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iverjo

function u(t) {

for(w=i=960;i--;)x.fillStyle=R(a=w*!i,a,a,.1+i),x.fillRect(!a*(w+w*S(d=i/42)*S(b=48.893*i+t)),!a*(530+530*C(d)),s=6/(S(d)*C(b)+1.2)+2*a,s)

Aug 1 2016 2:08 AM UTC

}// 138/140

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u/joeytwiddle

Fabergé egg

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iverjo

remix of d/79 by u/iverjo

function u(t) {

c.width=960;for(i=2e3;i--;)s=7/(S(i/42)*S(2.79*i+t-1.57)+2),x.fillRect(480+460*S(i/42)*S(2.79*i+t),270+160*(C(i/42)+T(t/9+i/42)),s,s)

Jul 29 2016 12:55 AM UTC

}// 133/140

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Golfed version (120 characters): c.width=960;for(i=2e3;i--;)b=2.79*i+t,x.fillRect(480+460*S(a=i/42)*S(b),270+160*(C(a)+T(t/9+a)),s=7/(S(a)*S(b+4.7)+2),s)

u/iverjo

118 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*S(b+4.7)+2),s)
u/iverjo

115 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(-S(d)*C(b)+2),s)
u/iverjo

114 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*C(b)+2),s)

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