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.

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Current theme challenge: #ScaryMovies

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iverjo

function u(t) {

c.width=960;for(i=26;i--;)d=(i+3*t)%26,I=C(d*.7)>0?1:0,x.beginPath(),x.arc(480,270,I?(d*22):(600-d*22),0,6.4),x.lineWidth=12,x.stroke()

Jan 28 2017 9:13 PM UTC

}// 135/140

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Optical illusion: Go fullscreen and stare at the center for 15-30 seconds. Then look down at your keyboard. Notice anything unusual?

u/iverjo

129 characters: c.width=960;for(i=26;i--;)d=(i+3*t)%26,I=C(d*.7)>0?1:0,x.beginPath(),x.arc(480,270,I?d*22:600-d*22,0,7),x.lineWidth=12,x.stroke()
u/iverjo

#opticalillusion

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iverjo

remix of d/257 by u/iverjo

function u(t) {

x.fillStyle=R(249,183,227,.01);X=S(t);x.lineTo(960+512*X*X*X,480-32*(13*C(t)-5*C(2*t)-2*C(3*t)-C(4*t)));x.fill()

Dec 31 2016 3:17 PM UTC

}// 112/140

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u/BriSeven

nice maths
u/iverjo

Found the mathematic formula online somewhere ^^
u/joeytwiddle

Wait, there's a mathematical formula for love? :-O
u/iverjo

#heart
u/katkip

<3 #math

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iverjo

remix of d/312 by u/iverjo

function u(t) {

c.width=960;x.lineWidth=500;x.fillRect(2e3-t*955%2e3,W=230,80,80);x.strokeStyle=R(W,W);x.arc(100,270,250,G=.3-.5*S(t*6+2),6.3-G);x.stroke()

Jul 30 2016 3:25 AM UTC

}// 139/140

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#pacman

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iverjo

remix of d/183 by u/chunnoo

function u(t) {

t++;x.beginPath();r=128*t;w=960;h=540;p=24*Math.PI*t+t;q=p/60%t;x.moveTo(r*C(p-q)+w,r*S(p-q)+h);x.lineTo(r*C(p)+w,r*S(p)+h);x.stroke()

Jul 29 2016 5:14 PM UTC

}// 134/140

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iverjo

remix of d/286 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=.5-Math.random())%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jul 21 2016 1:21 PM UTC

}// 134/140

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u/sigveseb

almost looks like a map!
u/joeytwiddle

Whoa! When I was younger I used to have nightmares about this damn thing. I would clean it all away but then it would come creeping back. Weird that you found it in 2016!
u/iverjo

#random

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iverjo

function u(t) {

c.width=198;X=Y=99,a=0,d=9;for(i=0;i++<30;)x.beginPath(),x.moveTo(X,Y),x.lineTo(X-=d*S(a),Y-=d*C(a)),d*=.9,x.stroke(),a+=S(2*t-i/12)/3

Jan 8 2016 1:22 AM UTC

}// 134/140

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u/stiaje

Nice blurring!
u/iverjo

The blur wasn't meant as a part of the effect. I believe it was done as a compromise to save a few bytes at a point during the process of creating the dweet
u/katkip

#plant

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iverjo

function u(t) {

k=260;c.width=2e3;for(i=9;i++<5*k;)p=t+i/k+i%8*5,s=3/(10-p%9),x.beginPath(),x.arc(99*S(p)+i%8*k,550*s,49*s*S(i/k),i,i+7),x.stroke()

Jan 8 2016 1:21 AM UTC

}// 131/140

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#snake #worm

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iverjo

remix of d/75 by u/iverjo

function u(t) {

/* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */
c.width^=0;for(i=24;i--;)x.fillRect(960+22*i*C(a=t*i/8),520+22*i*S(a),2*i,2*i)

Feb 25 2017 1:36 AM UTC

}// 140/140

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u/gormisdomai

This is so pleasing to watch!
u/iverjo

My comment is yuge. It is the largest ever. People love it bigly.
u/sigveseb

lol that comment tho
u/iverjo

Golfed: /* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */ for(c.width+=i=0;i<48;i+=2)x.fillRect(960+11*i*C(a=t*i/16),520+11*i*S(a),i,i)
u/AstonC

Tremendous!
u/iverjo

#spiral

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iverjo

function u(t) {

t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/1e11-1,b=Math.abs(2*a*b)+j/1e11-1,a=c;x.fillRect(i,j,1,S(k/9))}

Sep 28 2016 1:14 PM UTC

}// 134/140

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Burning ship fractal, zoomed in on an interesting point

Show more comments…
u/iverjo

128 characters: for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+t*6e-10-1,b=Math.abs(2*a*b)+j/1e11-1,a=c;x.fillRect(t*60,j,1,S(k/9))}
u/iverjo

127 characters: for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;)c=a*a-b*b+t*6e-10-1,b=Math.abs(2*a*b)+j/1e11-1,a=c;x.fillRect(t*60,j,1,S(k/9))}
u/iverjo

126 characters: for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+t*6e-10-1,b=Math.abs(2*a*b)+j/1e11-1;x.fillRect(t*60,j,1,S(k/9))}
u/donbright

speechless!!
u/iverjo

#fractal
u/iverjo

#burningship

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iverjo

remix of d/11024 by u/katkip

function u(t) {

throw' '.repeat(9+C(t)*9)+"|".repeat(9)

Nov 17 2018 6:33 PM UTC

}// 39/140

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Replaced the dot with the "FOUR-PER-EM SPACE" unicode character #short #default #unicode

u/katkip

Oh, thanks
u/jylikangas

Isn't it even shorter without the second repeat call. I mean just adding the vertical parts inside the string
u/katkip

I actually realised this after 1 second from posting

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